raylib-cs/Raylib-cs/Raylib.cs

/* Raylib.cs
*
* Copyright 2020 Chris Dill
*
* Release under zLib License.
* See LICENSE for details.
*/

using System;
using System.Numerics;
using System.Runtime.InteropServices;
using System.Security;

namespace Raylib_cs
{
    // Matrix type (OpenGL style 4x4 - right handed, column major)
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Matrix
    {
        public float m0;
        public float m4;
        public float m8;
        public float m12;
        public float m1;
        public float m5;
        public float m9;
        public float m13;
        public float m2;
        public float m6;
        public float m10;
        public float m14;
        public float m3;
        public float m7;
        public float m11;
        public float m15;
    }

    // Color type, RGBA (32bit)
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Color
    {
        public byte r;
        public byte g;
        public byte b;
        public byte a;

        // Example - Color.RED instead of RED
        // Custom raylib color palette for amazing visuals
        public static Color LIGHTGRAY = new Color(200, 200, 200, 255);
        public static Color GRAY = new Color(130, 130, 130, 255);
        public static Color DARKGRAY = new Color(80, 80, 80, 255);
        public static Color YELLOW = new Color(253, 249, 0, 255);
        public static Color GOLD = new Color(255, 203, 0, 255);
        public static Color ORANGE = new Color(255, 161, 0, 255);
        public static Color PINK = new Color(255, 109, 194, 255);
        public static Color RED = new Color(230, 41, 55, 255);
        public static Color MAROON = new Color(190, 33, 55, 255);
        public static Color GREEN = new Color(0, 228, 48, 255);
        public static Color LIME = new Color(0, 158, 47, 255);
        public static Color DARKGREEN = new Color(0, 117, 44, 255);
        public static Color SKYBLUE = new Color(102, 191, 255, 255);
        public static Color BLUE = new Color(0, 121, 241, 255);
        public static Color DARKBLUE = new Color(0, 82, 172, 255);
        public static Color PURPLE = new Color(200, 122, 255, 255);
        public static Color VIOLET = new Color(135, 60, 190, 255);
        public static Color DARKPURPLE = new Color(112, 31, 126, 255);
        public static Color BEIGE = new Color(211, 176, 131, 255);
        public static Color BROWN = new Color(127, 106, 79, 255);
        public static Color DARKBROWN = new Color(76, 63, 47, 255);
        public static Color WHITE = new Color(255, 255, 255, 255);
        public static Color BLACK = new Color(0, 0, 0, 255);
        public static Color BLANK = new Color(0, 0, 0, 0);
        public static Color MAGENTA = new Color(255, 0, 255, 255);
        public static Color RAYWHITE = new Color(245, 245, 245, 255);

        public Color(byte r, byte g, byte b, byte a)
        {
            this.r = r;
            this.g = g;
            this.b = b;
            this.a = a;
        }

        public Color(int r, int g, int b, int a)
        {
            this.r = Convert.ToByte(r);
            this.g = Convert.ToByte(g);
            this.b = Convert.ToByte(b);
            this.a = Convert.ToByte(a);
        }

        public override string ToString()
        {
            return string.Concat(r.ToString(), " ", g.ToString(), " ", b.ToString(), " ", a.ToString());
        }
    }

    // Rectangle type
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Rectangle
    {
        public float x;
        public float y;
        public float width;
        public float height;

        public Rectangle(float x, float y, float width, float height)
        {
            this.x = x;
            this.y = y;
            this.width = width;
            this.height = height;
        }
    }

    // Image type, bpp always RGBA (32bit)
    // NOTE: Data stored in CPU memory (RAM)
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Image
    {
        // data refers to a void *
        public IntPtr data;        // Image raw data
        public int width;          // Image base width
        public int height;         // Image base height
        public int mipmaps;        // Mipmap levels, 1 by default
        public int format;         // Data format (PixelFormat type)
    }

    // Texture2D type
    // NOTE: Data stored in GPU memory
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Texture2D
    {
        public uint id;            // OpenGL texture id
        public int width;          // Texture base width
        public int height;         // Texture base height
        public int mipmaps;        // Mipmap levels, 1 by default
        public int format;         // Data format (PixelFormat type)
    }

    // RenderTexture2D type, for texture rendering
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct RenderTexture2D
    {
        public uint id;                  // OpenGL Framebuffer Object (FBO) id
        public Texture2D texture;        // Color buffer attachment texture
        public Texture2D depth;          // Depth buffer attachment texture

        [MarshalAs(UnmanagedType.I1)]
        public bool depthTexture;        // Track if depth attachment is a texture or renderbuffer
    }

    // N-Patch layout info
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct NPatchInfo
    {
        public Rectangle sourceRec;        // Region in the texture
        public int left;                   // left border offset
        public int top;                    // top border offset
        public int right;                  // right border offset
        public int bottom;                 // bottom border offset
        public int type;                   // layout of the n-patch: 3x3, 1x3 or 3x1
    }

    // Font character info
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct CharInfo
    {
        public int value;                  // Character value (Unicode)
        public int offsetX;                // Character offset X when drawing
        public int offsetY;                // Character offset Y when drawing
        public int advanceX;               // Character advance position X
        public Image image;                // Character image data
    }

    // Font type, includes texture and charSet array data
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Font
    {
        public int baseSize;             // Base size (default chars height)
        public int charsCount;           // Number of characters
        public Texture2D texture;        // Font texture

        // recs refers to a Rectangle *
        public IntPtr recs;              // Characters rectangles in texture

        // chars refers to a CharInfo *
        public IntPtr chars;             // Characters info data
    }

    // Camera type, defines a camera position/orientation in 3d space
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Camera3D
    {
        public Vector3 position;        // Camera position
        public Vector3 target;          // Camera target it looks-at
        public Vector3 up;              // Camera up vector (rotation over its axis)
        public float fovy;              // Camera field-of-view apperture in Y (degrees) in perspective, used as near plane width in orthographic
        public CameraType type;         // Camera type, defines projection type: CAMERA_PERSPECTIVE or CAMERA_ORTHOGRAPHIC

        public Camera3D(Vector3 position, Vector3 target, Vector3 up, float fovy = 90, CameraType type = CameraType.CAMERA_PERSPECTIVE)
        {
            this.position = position;
            this.target = target;
            this.up = up;
            this.fovy = fovy;
            this.type = type;
        }
    }

    // Camera2D type, defines a 2d camera
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Camera2D
    {
        public Vector2 offset;        // Camera offset (displacement from target)
        public Vector2 target;        // Camera target (rotation and zoom origin)
        public float rotation;        // Camera rotation in degrees
        public float zoom;            // Camera zoom (scaling), should be 1.0f by default

        public Camera2D(Vector2 offset, Vector2 target, float rotation, float zoom)
        {
            this.offset = offset;
            this.target = target;
            this.rotation = rotation;
            this.zoom = zoom;
        }
    }

    // Vertex data definning a mesh
    // NOTE: Data stored in CPU memory (and GPU)
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Mesh
    {
        public int vertexCount;                    // Number of vertices stored in arrays
        public int triangleCount;                  // Number of triangles stored (indexed or not)

        // Default vertex data
        // vertices refers to a float *
        public IntPtr vertices;                    // Vertex position (XYZ - 3 components per vertex) (shader-location = 0)
        // texcoords refers to a float *
        public IntPtr texcoords;                   // Vertex texture coordinates (UV - 2 components per vertex) (shader-location = 1)
        // texcoords2 refers to a float *
        public IntPtr texcoords2;                  // Vertex second texture coordinates (useful for lightmaps) (shader-location = 5)

        // normals refers to a float *
        public IntPtr normals;                     // Vertex normals (XYZ - 3 components per vertex) (shader-location = 2)

        // tangents refers to a float *
        public IntPtr tangents;                    // Vertex tangents (XYZW - 4 components per vertex) (shader-location = 4)

        // colors refers to a unsigned char *
        public IntPtr colors;                      // Vertex colors (RGBA - 4 components per vertex) (shader-location = 3)

        // indices refers to a unsigned short *
        public IntPtr indices;                     // Vertex indices (in case vertex data comes indexed)

        // Animation vertex data
        // animVertices refers to a float *
        public IntPtr animVertices;                // Animated vertex positions (after bones transformations)

        // animNormals refers to a float *
        public IntPtr animNormals;                 // Animated normals (after bones transformations)

        // vertices refers to a int *
        public IntPtr boneIds;                     // Vertex bone ids, up to 4 bones influence by vertex (skinning)

        // boneWeights refers to a float *
        public IntPtr boneWeights;                 // Vertex bone weight, up to 4 bones influence by vertex (skinning)

        // OpenGL identifiers
        public uint vaoId;                         // OpenGL Vertex Array Object id

        // vboId refers to a uint[]
        public IntPtr vboId;                       // OpenGL Vertex Buffer Objects id (default vertex data)
    }

    // Shader type (generic)
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Shader
    {
        public uint id;            // Shader program id

        // locs refers to a int *
        public IntPtr locs;        // Shader locations array (MAX_SHADER_LOCATIONS)
    }

    // Material texture map
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct MaterialMap
    {
        public Texture2D texture;        // Material map texture
        public Color color;              // Material map color
        public float value;              // Material map value
    }

    // Material type (generic)
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Material
    {
        public Shader shader;             // Material shader

        // maps refers to a MaterialMap *
        public IntPtr maps;               // Material maps

        // params refers to a float *
        public IntPtr param;              // Material generic parameters (if required)
    }

    // Transformation properties
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Transform
    {
        public Vector3 translation;        // Translation
        public Vector4 rotation;           // Rotation
        public Vector3 scale;              // Scale
    }

    // Bone information
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct BoneInfo
    {
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
        public char[] name;        // Bone name
        public int parent;         // Bone parent
    }

    // Model type
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Model
    {
        public Matrix transform;           // Local transform matrix
        public int meshCount;              // Number of meshes

        // meshes refers to a Mesh *
        public IntPtr meshes;              // Meshes array
        public int materialCount;          // Number of materials

        // materials refers to a Material *
        public IntPtr materials;		   // Materials array refers to a Material *

        // meshMaterial refers to a int *
        public IntPtr meshMaterial;        // Mesh material number
        public int boneCount;              // Number of bones

        // bones refers to a BoneInfo *
        public IntPtr bones;               // Bones information (skeleton)

        // bindPose refers to a Transform *
        public IntPtr bindPose;            // Bones base transformation (pose)
    }

    // Model animation
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct ModelAnimation
    {
        public int boneCount;                 // Number of bones

        // bones refers to a BoneInfo *
        public IntPtr bones;                  // Bones information (skeleton)
        public int frameCount;                // Number of animation frames

        // framePoses refers to a Transform **
        public IntPtr framePoses;      // Poses array by frame
    }

    // Ray type (useful for raycast)
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Ray
    {
        public Vector3 position;         // Ray position (origin)
        public Vector3 direction;        // Ray direction

        public Ray(Vector3 position, Vector3 direction)
        {
            this.position = position;
            this.direction = direction;
        }
    }

    // Raycast hit information
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct RayHitInfo
    {
        [MarshalAs(UnmanagedType.I1)]
        public bool hit;                // Did the ray hit something?
        public float distance;          // Distance to nearest hit
        public Vector3 position;        // Position of nearest hit
        public Vector3 normal;          // Surface normal of hit
    }

    // Bounding box type
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct BoundingBox
    {
        public Vector3 min;        // Minimum vertex box-corner
        public Vector3 max;        // Maximum vertex box-corner

        public BoundingBox(Vector3 min, Vector3 max)
        {
            this.min = min;
            this.max = max;
        }
    }

    // Wave type, defines audio wave data
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Wave
    {
        public uint sampleCount;        // Number of samples
        public uint sampleRate;         // Frequency (samples per second)
        public uint sampleSize;         // Bit depth (bits per sample): 8, 16, 32 (24 not supported)
        public uint channels;           // Number of channels (1-mono, 2-stereo)

        // data refers to a void *
        public IntPtr data;             // Buffer data pointer
    }

    // Audio stream type
    // NOTE: Useful to create custom audio streams not bound to a specific file
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct AudioStream
    {
        public uint sampleRate;        // Frequency (samples per second)
        public uint sampleSize;        // Bit depth (bits per sample): 8, 16, 32 (24 not supported)
        public uint channels;          // Number of channels (1-mono, 2-stereo)

        // audioBuffer refers to a rAudioBuffer *
        public IntPtr audioBuffer;     // Pointer to internal data used by the audio system
    }

    // Sound source type
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Sound
    {
        public uint sampleCount;          // Total number of samples
        public AudioStream stream;        // Audio stream
    }

    // Music stream type (audio file streaming from memory)
    // NOTE: Anything longer than ~10 seconds should be streamed
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct Music
    {
        public int ctxType;               // Type of music context (audio filetype)

        // ctxData refers to a void *
        public IntPtr ctxData;            // Audio context data, depends on type

        public uint sampleCount;          // Total number of samples
        public uint loopCount;            // Loops count (times music will play), 0 means infinite loop

        public AudioStream stream;        // Audio stream
    }

    // Head-Mounted-Display device parameters
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public struct VrDeviceInfo
    {
        public int hResolution;                                                                                   // HMD horizontal resolution in pixels
        public int vResolution;                                                                                   // HMD vertical resolution in pixels
        public float hScreenSize;                                                                                 // HMD horizontal size in meters
        public float vScreenSize;                                                                                 // HMD vertical size in meters
        public float vScreenCenter;                                                                               // HMD screen center in meters
        public float eyeToScreenDistance;                                                                         // HMD distance between eye and display in meters
        public float lensSeparationDistance;                                                                      // HMD lens separation distance in meters
        public float interpupillaryDistance;                                                                      // HMD IPD (distance between pupils) in meters

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
        public float[] lensDistortionValues;                                                                      // HMD lens distortion constant parameters

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
        public float[] chromaAbCorrection;                                                                        // HMD chromatic aberration correction parameters
    }

    // ----------------------------------------------------------------------------------
    // Enumerators Definition
    // ----------------------------------------------------------------------------------

    // System config flags
    // NOTE: Used for bit masks
    public enum ConfigFlag
    {
        FLAG_RESERVED           = 1,    // Reserved
        FLAG_FULLSCREEN_MODE    = 2,    // Set to run program in fullscreen
        FLAG_WINDOW_RESIZABLE   = 4,    // Set to allow resizable window
        FLAG_WINDOW_UNDECORATED = 8,    // Set to disable window decoration (frame and buttons)
        FLAG_WINDOW_TRANSPARENT = 16,   // Set to allow transparent window
        FLAG_WINDOW_HIDDEN      = 128,  // Set to create the window initially hidden
        FLAG_WINDOW_ALWAYS_RUN  = 256,  // Set to allow windows running while minimized
        FLAG_MSAA_4X_HINT       = 32,   // Set to try enabling MSAA 4X
        FLAG_VSYNC_HINT         = 64    // Set to try enabling V-Sync on GPU
    }

    // Trace log type
    public enum TraceLogType
    {
        LOG_ALL = 0,        // Display all logs
        LOG_TRACE,
        LOG_DEBUG,
        LOG_INFO,
        LOG_WARNING,
        LOG_ERROR,
        LOG_FATAL,
        LOG_NONE            // Disable logging
    }

    // Keyboard keys
    public enum KeyboardKey
    {
        // Alphanumeric keys
        KEY_APOSTROPHE      = 39,
        KEY_COMMA           = 44,
        KEY_MINUS           = 45,
        KEY_PERIOD          = 46,
        KEY_SLASH           = 47,
        KEY_ZERO            = 48,
        KEY_ONE             = 49,
        KEY_TWO             = 50,
        KEY_THREE           = 51,
        KEY_FOUR            = 52,
        KEY_FIVE            = 53,
        KEY_SIX             = 54,
        KEY_SEVEN           = 55,
        KEY_EIGHT           = 56,
        KEY_NINE            = 57,
        KEY_SEMICOLON       = 59,
        KEY_EQUAL           = 61,
        KEY_A               = 65,
        KEY_B               = 66,
        KEY_C               = 67,
        KEY_D               = 68,
        KEY_E               = 69,
        KEY_F               = 70,
        KEY_G               = 71,
        KEY_H               = 72,
        KEY_I               = 73,
        KEY_J               = 74,
        KEY_K               = 75,
        KEY_L               = 76,
        KEY_M               = 77,
        KEY_N               = 78,
        KEY_O               = 79,
        KEY_P               = 80,
        KEY_Q               = 81,
        KEY_R               = 82,
        KEY_S               = 83,
        KEY_T               = 84,
        KEY_U               = 85,
        KEY_V               = 86,
        KEY_W               = 87,
        KEY_X               = 88,
        KEY_Y               = 89,
        KEY_Z               = 90,

        // Function keys
        KEY_SPACE           = 32,
        KEY_ESCAPE          = 256,
        KEY_ENTER           = 257,
        KEY_TAB             = 258,
        KEY_BACKSPACE       = 259,
        KEY_INSERT          = 260,
        KEY_DELETE          = 261,
        KEY_RIGHT           = 262,
        KEY_LEFT            = 263,
        KEY_DOWN            = 264,
        KEY_UP              = 265,
        KEY_PAGE_UP         = 266,
        KEY_PAGE_DOWN       = 267,
        KEY_HOME            = 268,
        KEY_END             = 269,
        KEY_CAPS_LOCK       = 280,
        KEY_SCROLL_LOCK     = 281,
        KEY_NUM_LOCK        = 282,
        KEY_PRINT_SCREEN    = 283,
        KEY_PAUSE           = 284,
        KEY_F1              = 290,
        KEY_F2              = 291,
        KEY_F3              = 292,
        KEY_F4              = 293,
        KEY_F5              = 294,
        KEY_F6              = 295,
        KEY_F7              = 296,
        KEY_F8              = 297,
        KEY_F9              = 298,
        KEY_F10             = 299,
        KEY_F11             = 300,
        KEY_F12             = 301,
        KEY_LEFT_SHIFT      = 340,
        KEY_LEFT_CONTROL    = 341,
        KEY_LEFT_ALT        = 342,
        KEY_LEFT_SUPER      = 343,
        KEY_RIGHT_SHIFT     = 344,
        KEY_RIGHT_CONTROL   = 345,
        KEY_RIGHT_ALT       = 346,
        KEY_RIGHT_SUPER     = 347,
        KEY_KB_MENU         = 348,
        KEY_LEFT_BRACKET    = 91,
        KEY_BACKSLASH       = 92,
        KEY_RIGHT_BRACKET   = 93,
        KEY_GRAVE           = 96,

        // Keypad keys
        KEY_KP_0            = 320,
        KEY_KP_1            = 321,
        KEY_KP_2            = 322,
        KEY_KP_3            = 323,
        KEY_KP_4            = 324,
        KEY_KP_5            = 325,
        KEY_KP_6            = 326,
        KEY_KP_7            = 327,
        KEY_KP_8            = 328,
        KEY_KP_9            = 329,
        KEY_KP_DECIMAL      = 330,
        KEY_KP_DIVIDE       = 331,
        KEY_KP_MULTIPLY     = 332,
        KEY_KP_SUBTRACT     = 333,
        KEY_KP_ADD          = 334,
        KEY_KP_ENTER        = 335,
        KEY_KP_EQUAL        = 336
    }

    // Android buttons
    public enum AndroidButton
    {
        KEY_BACK            = 4,
        KEY_MENU            = 82,
        KEY_VOLUME_UP       = 24,
        KEY_VOLUME_DOWN     = 25
    }

    // Mouse buttons
    public enum MouseButton
    {
        MOUSE_LEFT_BUTTON   = 0,
        MOUSE_RIGHT_BUTTON  = 1,
        MOUSE_MIDDLE_BUTTON = 2
    }

    // Gamepad number
    public enum GamepadNumber
    {
        GAMEPAD_PLAYER1     = 0,
        GAMEPAD_PLAYER2     = 1,
        GAMEPAD_PLAYER3     = 2,
        GAMEPAD_PLAYER4     = 3
    }

    // Gamepad Buttons
    public enum GamepadButton
    {
        // This is here just for error checking
        GAMEPAD_BUTTON_UNKNOWN = 0,

        // This is normally a DPAD
        GAMEPAD_BUTTON_LEFT_FACE_UP,
        GAMEPAD_BUTTON_LEFT_FACE_RIGHT,
        GAMEPAD_BUTTON_LEFT_FACE_DOWN,
        GAMEPAD_BUTTON_LEFT_FACE_LEFT,

        // This normally corresponds with PlayStation and Xbox controllers
        // XBOX: [Y,X,A,B]
        // PS3: [Triangle,Square,Cross,Circle]
        // No support for 6 button controllers though..
        GAMEPAD_BUTTON_RIGHT_FACE_UP,
        GAMEPAD_BUTTON_RIGHT_FACE_RIGHT,
        GAMEPAD_BUTTON_RIGHT_FACE_DOWN,
        GAMEPAD_BUTTON_RIGHT_FACE_LEFT,

        // Triggers
        GAMEPAD_BUTTON_LEFT_TRIGGER_1,
        GAMEPAD_BUTTON_LEFT_TRIGGER_2,
        GAMEPAD_BUTTON_RIGHT_TRIGGER_1,
        GAMEPAD_BUTTON_RIGHT_TRIGGER_2,

        // These are buttons in the center of the gamepad
        GAMEPAD_BUTTON_MIDDLE_LEFT,     //PS3 Select
        GAMEPAD_BUTTON_MIDDLE,          //PS Button/XBOX Button
        GAMEPAD_BUTTON_MIDDLE_RIGHT,    //PS3 Start

        // These are the joystick press in buttons
        GAMEPAD_BUTTON_LEFT_THUMB,
        GAMEPAD_BUTTON_RIGHT_THUMB
    }

    public enum GamepadAxis
    {
        // This is here just for error checking
        GAMEPAD_AXIS_UNKNOWN = 0,

        // Left stick
        GAMEPAD_AXIS_LEFT_X,
        GAMEPAD_AXIS_LEFT_Y,

        // Right stick
        GAMEPAD_AXIS_RIGHT_X,
        GAMEPAD_AXIS_RIGHT_Y,

        // Pressure levels for the back triggers
        GAMEPAD_AXIS_LEFT_TRIGGER,      // [1..-1] (pressure-level)
        GAMEPAD_AXIS_RIGHT_TRIGGER      // [1..-1] (pressure-level)
    }

    // Shader location point type
    public enum ShaderLocationIndex
    {
        LOC_VERTEX_POSITION = 0,
        LOC_VERTEX_TEXCOORD01,
        LOC_VERTEX_TEXCOORD02,
        LOC_VERTEX_NORMAL,
        LOC_VERTEX_TANGENT,
        LOC_VERTEX_COLOR,
        LOC_MATRIX_MVP,
        LOC_MATRIX_MODEL,
        LOC_MATRIX_VIEW,
        LOC_MATRIX_PROJECTION,
        LOC_VECTOR_VIEW,
        LOC_COLOR_DIFFUSE,
        LOC_COLOR_SPECULAR,
        LOC_COLOR_AMBIENT,
        LOC_MAP_ALBEDO,          // LOC_MAP_DIFFUSE
        LOC_MAP_METALNESS,       // LOC_MAP_SPECULAR
        LOC_MAP_NORMAL,
        LOC_MAP_ROUGHNESS,
        LOC_MAP_OCCLUSION,
        LOC_MAP_EMISSION,
        LOC_MAP_HEIGHT,
        LOC_MAP_CUBEMAP,
        LOC_MAP_IRRADIANCE,
        LOC_MAP_PREFILTER,
        LOC_MAP_BRDF
    }

    // Shader uniform data types
    public enum ShaderUniformDataType
    {
        UNIFORM_FLOAT = 0,
        UNIFORM_VEC2,
        UNIFORM_VEC3,
        UNIFORM_VEC4,
        UNIFORM_INT,
        UNIFORM_IVEC2,
        UNIFORM_IVEC3,
        UNIFORM_IVEC4,
        UNIFORM_SAMPLER2D
    }

    // Material map type
    public enum MaterialMapType
    {
        MAP_ALBEDO    = 0,       // MAP_DIFFUSE
        MAP_METALNESS = 1,       // MAP_SPECULAR
        MAP_NORMAL    = 2,
        MAP_ROUGHNESS = 3,
        MAP_OCCLUSION,
        MAP_EMISSION,
        MAP_HEIGHT,
        MAP_CUBEMAP,             // NOTE: Uses GL_TEXTURE_CUBE_MAP
        MAP_IRRADIANCE,          // NOTE: Uses GL_TEXTURE_CUBE_MAP
        MAP_PREFILTER,           // NOTE: Uses GL_TEXTURE_CUBE_MAP
        MAP_BRDF
    }

    // Pixel formats
    // NOTE: Support depends on OpenGL version and platform
    public enum PixelFormat
    {
        UNCOMPRESSED_GRAYSCALE = 1,     // 8 bit per pixel (no alpha)
        UNCOMPRESSED_GRAY_ALPHA,        // 8*2 bpp (2 channels)
        UNCOMPRESSED_R5G6B5,            // 16 bpp
        UNCOMPRESSED_R8G8B8,            // 24 bpp
        UNCOMPRESSED_R5G5B5A1,          // 16 bpp (1 bit alpha)
        UNCOMPRESSED_R4G4B4A4,          // 16 bpp (4 bit alpha)
        UNCOMPRESSED_R8G8B8A8,          // 32 bpp
        UNCOMPRESSED_R32,               // 32 bpp (1 channel - float)
        UNCOMPRESSED_R32G32B32,         // 32*3 bpp (3 channels - float)
        UNCOMPRESSED_R32G32B32A32,      // 32*4 bpp (4 channels - float)
        COMPRESSED_DXT1_RGB,            // 4 bpp (no alpha)
        COMPRESSED_DXT1_RGBA,           // 4 bpp (1 bit alpha)
        COMPRESSED_DXT3_RGBA,           // 8 bpp
        COMPRESSED_DXT5_RGBA,           // 8 bpp
        COMPRESSED_ETC1_RGB,            // 4 bpp
        COMPRESSED_ETC2_RGB,            // 4 bpp
        COMPRESSED_ETC2_EAC_RGBA,       // 8 bpp
        COMPRESSED_PVRT_RGB,            // 4 bpp
        COMPRESSED_PVRT_RGBA,           // 4 bpp
        COMPRESSED_ASTC_4x4_RGBA,       // 8 bpp
        COMPRESSED_ASTC_8x8_RGBA        // 2 bpp
    }

    // Texture parameters: filter mode
    // NOTE 1: Filtering considers mipmaps if available in the texture
    // NOTE 2: Filter is accordingly set for minification and magnification
    public enum TextureFilterMode
    {
        FILTER_POINT = 0,               // No filter, just pixel aproximation
        FILTER_BILINEAR,                // Linear filtering
        FILTER_TRILINEAR,               // Trilinear filtering (linear with mipmaps)
        FILTER_ANISOTROPIC_4X,          // Anisotropic filtering 4x
        FILTER_ANISOTROPIC_8X,          // Anisotropic filtering 8x
        FILTER_ANISOTROPIC_16X,         // Anisotropic filtering 16x
    }

    // Cubemap layout type
    public enum CubemapLayoutType
    {
        CUBEMAP_AUTO_DETECT = 0,        // Automatically detect layout type
        CUBEMAP_LINE_VERTICAL,          // Layout is defined by a vertical line with faces
        CUBEMAP_LINE_HORIZONTAL,        // Layout is defined by an horizontal line with faces
        CUBEMAP_CROSS_THREE_BY_FOUR,    // Layout is defined by a 3x4 cross with cubemap faces
        CUBEMAP_CROSS_FOUR_BY_THREE,    // Layout is defined by a 4x3 cross with cubemap faces
        CUBEMAP_PANORAMA                // Layout is defined by a panorama image (equirectangular map)
    }

    // Texture parameters: wrap mode
    public enum TextureWrapMode
    {
        WRAP_REPEAT = 0,        // Repeats texture in tiled mode
        WRAP_CLAMP,             // Clamps texture to edge pixel in tiled mode
        WRAP_MIRROR_REPEAT,     // Mirrors and repeats the texture in tiled mode
        WRAP_MIRROR_CLAMP       // Mirrors and clamps to border the texture in tiled mode
    }

    // Font type, defines generation method
    public enum FontType
    {
        FONT_DEFAULT = 0,       // Default font generation, anti-aliased
        FONT_BITMAP,            // Bitmap font generation, no anti-aliasing
        FONT_SDF                // SDF font generation, requires external shader
    }

    // Color blending modes (pre-defined)
    public enum BlendMode
    {
        BLEND_ALPHA = 0,        // Blend textures considering alpha (default)
        BLEND_ADDITIVE,         // Blend textures adding colors
        BLEND_MULTIPLIED        // Blend textures multiplying colors
    }

    // Gestures type
    // NOTE: It could be used as flags to enable only some gestures
    public enum GestureType
    {
        GESTURE_NONE        = 0,
        GESTURE_TAP         = 1,
        GESTURE_DOUBLETAP   = 2,
        GESTURE_HOLD        = 4,
        GESTURE_DRAG        = 8,
        GESTURE_SWIPE_RIGHT = 16,
        GESTURE_SWIPE_LEFT  = 32,
        GESTURE_SWIPE_UP    = 64,
        GESTURE_SWIPE_DOWN  = 128,
        GESTURE_PINCH_IN    = 256,
        GESTURE_PINCH_OUT   = 512
    }

    // Camera system modes
    public enum CameraMode
    {
        CAMERA_CUSTOM = 0,
        CAMERA_FREE,
        CAMERA_ORBITAL,
        CAMERA_FIRST_PERSON,
        CAMERA_THIRD_PERSON
    }

    // Camera projection modes
    public enum CameraType
    {
        CAMERA_PERSPECTIVE = 0,
        CAMERA_ORTHOGRAPHIC
    }

    // Type of n-patch
    public enum NPatchType
    {
        NPT_9PATCH = 0,         // Npatch defined by 3x3 tiles
        NPT_3PATCH_VERTICAL,    // Npatch defined by 1x3 tiles
        NPT_3PATCH_HORIZONTAL   // Npatch defined by 3x1 tiles
    }

    [SuppressUnmanagedCodeSecurity]
    public static class Raylib
    {
        // Used by DllImport to load the native library.
        public const string nativeLibName = "raylib";

        public const string RAYLIB_VERSION = "3.0";

        public const float DEG2RAD = (float)Math.PI / 180.0f;
        public const float RAD2DEG = 180.0f / (float)Math.PI;

        public const int MAX_SHADER_LOCATIONS = 32;
        public const int MAX_MATERIAL_MAPS = 12;
        public const int MAX_TOUCH_POINTS = 10;

        // Callback delegate used in SetTraceLogCallback to allow for custom logging
        public delegate void TraceLogCallback(TraceLogType logType, string text, IntPtr args);

        // Extension providing SubText
        public static string SubText(this string input, int position, int length)
        {
            return input.Substring(position, Math.Min(length, input.Length));
        }

        //------------------------------------------------------------------------------------
        // Window and Graphics Device Functions (Module: core)
        //------------------------------------------------------------------------------------

        // Window-related functions

        // Initialize window and OpenGL context
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void InitWindow(int width, int height, string title);

        // Check if KEY_ESCAPE pressed or Close icon pressed
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool WindowShouldClose();

        // Close window and unload OpenGL context
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void CloseWindow();

        // Check if window has been initialized successfully
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsWindowReady();

        // Check if window has been minimized (or lost focus)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsWindowMinimized();

        // Check if window has been resized
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsWindowResized();

        // Check if window is currently hidden
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsWindowHidden();

        // Check if window is currently fullscreen
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsWindowFullscreen();

        // Toggle fullscreen mode (only PLATFORM_DESKTOP)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ToggleFullscreen();

        // Show the window
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnhideWindow();

        // Hide the window
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void HideWindow();

        // Set icon for window (only PLATFORM_DESKTOP)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetWindowIcon(Image image);

        // Set title for window (only PLATFORM_DESKTOP)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetWindowTitle(string title);

        // Set window position on screen (only PLATFORM_DESKTOP)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetWindowPosition(int x, int y);

        // Set monitor for the current window (fullscreen mode)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetWindowMonitor(int monitor);

        // Set window minimum dimensions (for FLAG_WINDOW_RESIZABLE)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetWindowMinSize(int width, int height);

        // Set window dimensions
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetWindowSize(int width, int height);

        // Get native window handle
        // IntPtr refers to a void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern IntPtr GetWindowHandle();

        // Get current screen width
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetScreenWidth();

        // Get current screen height
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetScreenHeight();

        // Get number of connected monitors
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetMonitorCount();

        // Get primary monitor width
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetMonitorWidth(int monitor);

        // Get primary monitor height
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetMonitorHeight(int monitor);

        // Get primary monitor physical width in millimetres
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetMonitorPhysicalWidth(int monitor);

        // Get primary monitor physical height in millimetres
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetMonitorPhysicalHeight(int monitor);

        // Get window position XY on monitor
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 GetWindowPosition();

        // Get the human-readable, UTF-8 encoded name of the primary monitor
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string GetMonitorName(int monitor);

        // Get clipboard text content
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string GetClipboardText();

        // Set clipboard text content
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetClipboardText(string text);


        // Cursor-related functions

        // Shows cursor
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ShowCursor();

        // Hides cursor
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void HideCursor();

        // Check if cursor is not visible
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsCursorHidden();

        // Enables cursor (unlock cursor)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void EnableCursor();

        // Disables cursor (lock cursor)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DisableCursor();


        // Drawing-related functions

        // Set background color (framebuffer clear color)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ClearBackground(Color color);

        // Setup canvas (framebuffer) to start drawing
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void BeginDrawing();

        // End canvas drawing and swap buffers (double buffering)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void EndDrawing();

        // Initialize 2D mode with custom camera (2D)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void BeginMode2D(Camera2D camera);

        // Ends 2D mode with custom camera
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void EndMode2D();

        // Initializes 3D mode with custom camera (3D)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void BeginMode3D(Camera3D camera);

        // Ends 3D mode and returns to default 2D orthographic mode
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void EndMode3D();

        // Initializes render texture for drawing
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void BeginTextureMode(RenderTexture2D target);

        // Ends drawing to render texture
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void EndTextureMode();

        // Begin scissor mode (define screen area for following drawing)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void BeginScissorMode(int x, int y, int width, int height);

        // End scissor mode
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void EndScissorMode();


        // Screen-space-related functions

        // Returns a ray trace from mouse position
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Ray GetMouseRay(Vector2 mousePosition, Camera3D camera);

        // Returns camera transform matrix (view matrix)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Matrix GetCameraMatrix(Camera3D camera);

        // Returns camera 2d transform matrix
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Matrix GetCameraMatrix2D(Camera2D camera);

        // Returns the screen space position for a 3d world space position
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 GetWorldToScreen(Vector3 position, Camera3D camera);

        // Returns size position for a 3d world space position
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 GetWorldToScreenEx(Vector3 position, Camera3D camera, int width, int height);

        // Returns the screen space position for a 2d camera world space position
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 GetWorldToScreen2D(Vector2 position, Camera2D camera);

        // Returns the world space position for a 2d camera screen space position
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 GetScreenToWorld2D(Vector2 position, Camera2D camera);


        // Timing-related functions

        // Set target FPS (maximum)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetTargetFPS(int fps);

        // Returns current FPS
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetFPS();

        // Returns time in seconds for last frame drawn
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern float GetFrameTime();

        // Returns elapsed time in seconds since InitWindow()
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern double GetTime();


        // Color-related functions

        // Returns hexadecimal value for a Color
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int ColorToInt(Color color);

        // Returns color normalized as float [0..1]
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector4 ColorNormalize(Color color);

        // Returns color from normalized values [0..1]
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Color ColorFromNormalized(Vector4 normalized);

        // Returns HSV values for a Color
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector3 ColorToHSV(Color color);

        // Returns a Color from HSV values
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Color ColorFromHSV(Vector3 hsv);

        // Returns a Color struct from hexadecimal value
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Color GetColor(int hexValue);

        // Color fade-in or fade-out, alpha goes from 0.0f to 1.0f
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Color Fade(Color color, float alpha);


        // Misc. functions

        // Setup window configuration flags (view FLAGS)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetConfigFlags(ConfigFlag flags);

        // Set the current threshold (minimum) log level
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetTraceLogLevel(TraceLogType logType);

        // Set the exit threshold (minimum) log level
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetTraceLogExit(TraceLogType logType);

        // Set a trace log callback to enable custom logging
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetTraceLogCallback(TraceLogCallback callback);

        // Show trace log messages (LOG_DEBUG, LOG_INFO, LOG_WARNING, LOG_ERROR)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void TraceLog(TraceLogType logType, string text);

        // Takes a screenshot of current screen (saved a .png)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void TakeScreenshot(string fileName);

        // Returns a random value between min and max (both included)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetRandomValue(int min, int max);


        // Files management functions

        // Load file data as byte array (read)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern byte[] LoadFileData(string fileName, ref int bytesRead);

        // Save data to file from byte array (write)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SaveFileData(string fileName, IntPtr data, int bytesToWrite);

        // Check if file exists
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool FileExists(string fileName);

        // Check file extension
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsFileExtension(string fileName, string ext);

        // Check if a directory path exists
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool DirectoryExists(string dirPath);

        // Get pointer to extension for a filename string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string GetExtension(string fileName);

        // Get pointer to filename for a path string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string GetFileName(string filePath);

        // Get filename string without extension (uses static string)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string GetFileNameWithoutExt(ref string filePath);

        // Get full path for a given fileName (uses static string)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string GetDirectoryPath(string fileName);

        // Get previous directory path for a given path (uses static string)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string GetPrevDirectoryPath(string dirPath);

        // Get current working directory (uses static string)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string GetWorkingDirectory();

        // Get filenames in a directory path (memory should be freed)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string[] GetDirectoryFiles(string dirPath, ref int count);

        // Clear directory files paths buffers (free memory)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ClearDirectoryFiles();

        // Change working directory, returns true if success
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool ChangeDirectory(string dir);

        // Check if a file has been dropped into window
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsFileDropped();

        // Get dropped files names (memory should be freed)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern IntPtr GetDroppedFiles(ref int count);

        // Clear dropped files paths buffer (free memory)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ClearDroppedFiles();

        // Get file modification time (last write time)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetFileModTime(string fileName);

        // Compress data (DEFLATE algorythm)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern byte[] CompressData(ref byte[] data, int dataLength, ref int compDataLength);

        // Decompress data (DEFLATE algorythm)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern byte[] DecompressData(ref byte[] compData, int compDataLength, ref int dataLength);


        // Persistent storage management

        // Save integer value to storage file (to defined position)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void StorageSaveValue(int position, int value);

        // Load integer value from storage file (from defined position)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int StorageLoadValue(int position);

        // Open URL with default system browser (if available)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void OpenURL(string url);

        //------------------------------------------------------------------------------------
        // Input Handling Functions (Module: core)
        //------------------------------------------------------------------------------------

        // Input-related functions: keyboard

        // Detect if a key has been pressed once
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsKeyPressed(KeyboardKey key);

        // Detect if a key is being pressed
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsKeyDown(KeyboardKey key);

        // Detect if a key has been released once
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsKeyReleased(KeyboardKey key);

        // Detect if a key is NOT being pressed
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsKeyUp(KeyboardKey key);

        // Set a custom key to exit program (default is ESC)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetExitKey(KeyboardKey key);

        // Get key pressed, call it multiple times for chars queued
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetKeyPressed();


        // Input-related functions: gamepads

        // Detect if a gamepad is available
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsGamepadAvailable(GamepadNumber gamepad);

        // Check gamepad name (if available)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsGamepadName(GamepadNumber gamepad, string name);

        // Return gamepad internal name id
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string GetGamepadName(GamepadNumber gamepad);

        // Detect if a gamepad button has been pressed once
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsGamepadButtonPressed(GamepadNumber gamepad, GamepadButton button);

        // Detect if a gamepad button is being pressed
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsGamepadButtonDown(GamepadNumber gamepad, GamepadButton button);

        // Detect if a gamepad button has been released once
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsGamepadButtonReleased(GamepadNumber gamepad, GamepadButton button);

        // Detect if a gamepad button is NOT being pressed
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsGamepadButtonUp(GamepadNumber gamepad, GamepadButton button);

        // Get the last gamepad button pressed
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetGamepadButtonPressed();

        // Return gamepad axis count for a gamepad
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetGamepadAxisCount(GamepadNumber gamepad);

        // Return axis movement value for a gamepad axis
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern float GetGamepadAxisMovement(GamepadNumber gamepad, GamepadAxis axis);


        // Input-related functions: mouse

        // Detect if a mouse button has been pressed once
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsMouseButtonPressed(MouseButton button);

        // Detect if a mouse button is being pressed
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsMouseButtonDown(MouseButton button);

        // Detect if a mouse button has been released once
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsMouseButtonReleased(MouseButton button);

        // Detect if a mouse button is NOT being pressed
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsMouseButtonUp(MouseButton button);

        // Returns mouse position X
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetMouseX();

        // Returns mouse position Y
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetMouseY();

        // Returns mouse position XY
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 GetMousePosition();

        // Set mouse position XY
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMousePosition(int x, int y);

        // Set mouse offset
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMouseOffset(int offsetX, int offsetY);

        // Set mouse scaling
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMouseScale(float scaleX, float scaleY);

        // Returns mouse wheel movement Y
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetMouseWheelMove();


        // Input-related functions: touch

        // Returns touch position X for touch point 0 (relative to screen size)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetTouchX();

        // Returns touch position Y for touch point 0 (relative to screen size)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetTouchY();

        // Returns touch position XY for a touch point index (relative to screen size)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 GetTouchPosition(int index);

        //------------------------------------------------------------------------------------
        // Gestures and Touch Handling Functions (Module: gestures)
        //------------------------------------------------------------------------------------

        // Enable a set of gestures using flags
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetGesturesEnabled(GestureType gestureFlags);

        // Check if a gesture have been detected
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsGestureDetected(GestureType gesture);

        // Get latest detected gesture
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetGestureDetected();

        // Get touch points count
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetTouchPointsCount();

        // Get gesture hold time in milliseconds
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern float GetGestureHoldDuration();

        // Get gesture drag vector
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 GetGestureDragVector();

        // Get gesture drag angle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern float GetGestureDragAngle();

        // Get gesture pinch delta
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 GetGesturePinchVector();

        // Get gesture pinch angle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern float GetGesturePinchAngle();

        //------------------------------------------------------------------------------------
        // Camera System Functions (Module: camera)
        //------------------------------------------------------------------------------------

        // Set camera mode (multiple camera modes available)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetCameraMode(Camera3D camera, CameraMode mode);

        // Update camera position for selected mode
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UpdateCamera(ref Camera3D camera);

        // Set camera pan key to combine with mouse movement (free camera)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetCameraPanControl(KeyboardKey panKey);

        // Set camera alt key to combine with mouse movement (free camera)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetCameraAltControl(KeyboardKey altKey);

        // Set camera smooth zoom key to combine with mouse (free camera)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetCameraSmoothZoomControl(KeyboardKey szKey);

        // Set camera move controls (1st person and 3rd person cameras)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetCameraMoveControls(KeyboardKey frontKey, KeyboardKey backKey, KeyboardKey rightKey, KeyboardKey leftKey, KeyboardKey upKey, KeyboardKey downKey);

        //------------------------------------------------------------------------------------
        // Basic Shapes Drawing Functions (Module: shapes)
        //------------------------------------------------------------------------------------

        // Basic shapes drawing functions

        // Draw a pixel
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawPixel(int posX, int posY, Color color);

        // Draw a pixel (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawPixelV(Vector2 position, Color color);

        // Draw a line
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawLine(int startPosX, int startPosY, int endPosX, int endPosY, Color color);

        // Draw a line (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawLineV(Vector2 startPos, Vector2 endPos, Color color);

        // Draw a line defining thickness
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawLineEx(Vector2 startPos, Vector2 endPos, float thick, Color color);

        // Draw a line using cubic-bezier curves in-out
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawLineBezier(Vector2 startPos, Vector2 endPos, float thick, Color color);

        // Draw lines sequence
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawLineStrip(Vector2[] points, int numPoints, Color color);

        // Draw a color-filled circle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCircle(int centerX, int centerY, float radius, Color color);

        // Draw a piece of a circle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCircleSector(Vector2 center, float radius, int startAngle, int endAngle, int segments, Color color);

        // Draw circle sector outline
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCircleSectorLines(Vector2 center, float radius, int startAngle, int endAngle, int segments, Color color);

        // Draw a gradient-filled circle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCircleGradient(int centerX, int centerY, float radius, Color color1, Color color2);

        // Draw a color-filled circle (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCircleV(Vector2 center, float radius, Color color);

        // Draw circle outline
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCircleLines(int centerX, int centerY, float radius, Color color);

        // Draw ellipse
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawEllipse(int centerX, int centerY, float radiusH, float radiusV, Color color);

        // Draw ellipse outline
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawEllipseLines(int centerX, int centerY, float radiusH, float radiusV, Color color);

        // Draw ring
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRing(Vector2 center, float innerRadius, float outerRadius, int startAngle, int endAngle, int segments, Color color);

        // Draw ring outline
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRingLines(Vector2 center, float innerRadius, float outerRadius, int startAngle, int endAngle, int segments, Color color);

        // Draw a color-filled rectangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangle(int posX, int posY, int width, int height, Color color);

        // Draw a color-filled rectangle (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangleV(Vector2 position, Vector2 size, Color color);

        // Draw a color-filled rectangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangleRec(Rectangle rec, Color color);

        // Draw a color-filled rectangle with pro parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectanglePro(Rectangle rec, Vector2 origin, float rotation, Color color);

        // Draw a vertical-gradient-filled rectangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangleGradientV(int posX, int posY, int width, int height, Color color1, Color color2);

        // Draw a horizontal-gradient-filled rectangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangleGradientH(int posX, int posY, int width, int height, Color color1, Color color2);

        // Draw a gradient-filled rectangle with custom vertex colors
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangleGradientEx(Rectangle rec, Color col1, Color col2, Color col3, Color col4);

        // Draw rectangle outline
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangleLines(int posX, int posY, int width, int height, Color color);

        // Draw rectangle outline with extended parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangleLinesEx(Rectangle rec, int lineThick, Color color);

        // Draw rectangle with rounded edges
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangleRounded(Rectangle rec, float roundness, int segments, Color color);

        // Draw rectangle with rounded edges outline
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRectangleRoundedLines(Rectangle rec, float roundness, int segments, int lineThick, Color color);

        // Draw a color-filled triangle (vertex in counter-clockwise order!)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTriangle(Vector2 v1, Vector2 v2, Vector2 v3, Color color);

        // Draw triangle outline (vertex in counter-clockwise order!)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTriangleLines(Vector2 v1, Vector2 v2, Vector2 v3, Color color);

        // Draw a triangle fan defined by points (first vertex is the center)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTriangleFan(Vector2[] points, int numPoints, Color color);

        // Draw a triangle strip defined by points
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTriangleStrip(ref Vector2 points, int pointsCount, Color color);

        // Draw a regular polygon (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color);

        // Draw a polygon outline of n sides
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawPolyLines(Vector2 center, int sides, float radius, float rotation, Color color);


        // Basic shapes collision detection functions

        // Check collision between two rectangles
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionRecs(Rectangle rec1, Rectangle rec2);

        // Check collision between two circles
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionCircles(Vector2 center1, float radius1, Vector2 center2, float radius2);

        // Check collision between circle and rectangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionCircleRec(Vector2 center, float radius, Rectangle rec);

        // Get collision rectangle for two rectangles collision
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Rectangle GetCollisionRec(Rectangle rec1, Rectangle rec2);

        // Check if point is inside rectangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionPointRec(Vector2 point, Rectangle rec);

        // Check if point is inside circle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionPointCircle(Vector2 point, Vector2 center, float radius);

        // Check if point is inside a triangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionPointTriangle(Vector2 point, Vector2 p1, Vector2 p2, Vector2 p3);

        //------------------------------------------------------------------------------------
        // Texture Loading and Drawing Functions (Module: textures)
        //------------------------------------------------------------------------------------

        // Image loading functions
        // NOTE: This functions do not require GPU access

        // Load image from file into CPU memory (RAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image LoadImage(string fileName);

        // Load image from Color array data (RGBA - 32bit)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image LoadImageEx(Color[] pixels, int width, int height);

        // Load image from raw data with parameters
        // data refers to a void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image LoadImagePro(IntPtr data, int width, int height, int format);

        // Load image from RAW file data
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image LoadImageRaw(string fileName, int width, int height, int format, int headerSize);

        // Unload image from CPU memory (RAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadImage(Image image);

        // Export image data to file
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ExportImage(Image image, string fileName);

        // Export image as code file defining an array of bytes
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ExportImageAsCode(Image image, string fileName);

        // Get pixel data from image as a Color struct array
        // IntPtr refers to a Color *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern IntPtr GetImageData(Image image);

        // Get pixel data from image as Vector4 array (float normalized)
        // IntPtr refers to a Vector4 *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern IntPtr GetImageDataNormalized(Image image);


        // Image generation functions

        // Generate image: plain color
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GenImageColor(int width, int height, Color color);

        // Generate image: vertical gradient
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GenImageGradientV(int width, int height, Color top, Color bottom);

        // Generate image: horizontal gradient
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GenImageGradientH(int width, int height, Color left, Color right);

        // Generate image: radial gradient
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GenImageGradientRadial(int width, int height, float density, Color inner, Color outer);

        // Generate image: checked
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GenImageChecked(int width, int height, int checksX, int checksY, Color col1, Color col2);

        // Generate image: white noise
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GenImageWhiteNoise(int width, int height, float factor);

        // Generate image: perlin noise
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GenImagePerlinNoise(int width, int height, int offsetX, int offsetY, float scale);

        // Generate image: cellular algorithm. Bigger tileSize means bigger cells
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GenImageCellular(int width, int height, int tileSize);


        // Image manipulation functions

        // Create an image duplicate (useful for transformations)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image ImageCopy(Image image);

        // Create an image from another image piece
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image ImageFromImage(Image image, Rectangle rec);

        // Create an image from text (default font)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image ImageText(string text, int fontSize, Color color);

        // Create an image from text (custom sprite font)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image ImageTextEx(Font font, string text, float fontSize, float spacing, Color tint);

        // Convert image to POT (power-of-two)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageToPOT(ref Image image, Color fillColor);

        // Convert image data to desired format
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageFormat(ref Image image, int newFormat);

        // Apply alpha mask to image
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageAlphaMask(ref Image image, Image alphaMask);

        // Clear alpha channel to desired color
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageAlphaClear(ref Image image, Color color, float threshold);

        // Crop image depending on alpha value
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageAlphaCrop(ref Image image, float threshold);

        // Premultiply alpha channel
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageAlphaPremultiply(ref Image image);

        // Crop an image to a defined rectangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageCrop(ref Image image, Rectangle crop);

        // Resize image (Bicubic scaling algorithm)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageResize(ref Image image, int newWidth, int newHeight);

        // Resize image (Nearest-Neighbor scaling algorithm)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageResizeNN(ref Image image, int newWidth, int newHeight);

        // Resize canvas and fill with color
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageResizeCanvas(ref Image image, int newWidth, int newHeight, int offsetX, int offsetY, Color color);

        // Generate all mipmap levels for a provided image
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageMipmaps(ref Image image);

        // Dither image data to 16bpp or lower (Floyd-Steinberg dithering)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDither(ref Image image, int rBpp, int gBpp, int bBpp, int aBpp);

        // Flip image vertically
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageFlipVertical(ref Image image);

        // Flip image horizontally
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageFlipHorizontal(ref Image image);

        // Rotate image clockwise 90deg
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageRotateCW(ref Image image);

        // Rotate image counter-clockwise 90deg
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageRotateCCW(ref Image image);

        // Modify image color: tint
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageColorTint(ref Image image, Color color);

        // Modify image color: invert
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageColorInvert(ref Image image);

        // Modify image color: grayscale
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageColorGrayscale(ref Image image);

        // Modify image color: contrast (-100 to 100)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageColorContrast(ref Image image, float contrast);

        // Modify image color: brightness (-255 to 255)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageColorBrightness(ref Image image, int brightness);

        // Modify image color: replace color
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageColorReplace(ref Image image, Color color, Color replace);

        // Extract color palette from image to maximum size (memory should be freed)
        // IntPtr refers to a Color *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern IntPtr ImageExtractPalette(Image image, int maxPaletteSize, ref int extractCount);

        // Get image alpha border rectangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Rectangle GetImageAlphaBorder(Image image, float threshold);


        // Image drawing functions
        // NOTE: Image software-rendering functions (CPU)

        // Clear image background with given color
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageClearBackground(ref Image dst, Color color);

        // Draw pixel within an image
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawPixel(ref Image dst, int posX, int posY, Color color);

        // Draw pixel within an image (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawPixelV(ref Image dst, Vector2 position, Color color);

        // Draw line within an image
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawLine(ref Image dst, int startPosX, int startPosY, int endPosX, int endPosY, Color color);

        // Draw line within an image (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawLineV(ref Image dst, Vector2 start, Vector2 end, Color color);

        // Draw circle within an image
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawCircle(ref Image dst, int centerX, int centerY, int radius, Color color);

        // Draw circle within an image (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawCircleV(ref Image dst, Vector2 center, int radius, Color color);

        // Draw rectangle within an image
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawRectangle(ref Image dst, int posX, int posY, int width, int height, Color color);

        // Draw rectangle within an image (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawRectangleV(ref Image dst, Vector2 position, Vector2 size, Color color);

        // Draw rectangle within an image
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawRectangleRec(ref Image dst, Rectangle rec, Color color);

        // Draw rectangle lines within an image
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawRectangleLines(ref Image dst, Rectangle rec, int thick, Color color);

        // Draw a source image within a destination image (tint applied to source)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDraw(ref Image dst, Image src, Rectangle srcRec, Rectangle dstRec, Color tint);

        // Draw text (default font) within an image (destination)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawText(ref Image dst, Vector2 position, string text, int fontSize, Color color);

        // Draw text (custom sprite font) within an image (destination)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDrawTextEx(ref Image dst, Vector2 position, Font font, string text, float fontSize, float spacing, Color color);

        // Draw a source image within a destination image (tint applied to source)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ImageDraw(ref Image dst, Image src, Rectangle srcRec, Rectangle dstRec);


        // Texture loading functions
        // NOTE: These functions require GPU access

        // Load texture from file into GPU memory (VRAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Texture2D LoadTexture(string fileName);

        // Load texture from image data
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Texture2D LoadTextureFromImage(Image image);

        // Load cubemap from image, multiple image cubemap layouts supported
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Texture2D LoadTextureCubemap(Image image, CubemapLayoutType layoutType);

        // Load texture for rendering (framebuffer)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern RenderTexture2D LoadRenderTexture(int width, int height);

        // Unload texture from GPU memory (VRAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadTexture(Texture2D texture);

        // Unload render texture from GPU memory (VRAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadRenderTexture(RenderTexture2D target);

        // Update GPU texture with new data
        // pixels refers to a const void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UpdateTexture(Texture2D texture, IntPtr pixels);

        // Get pixel data from GPU texture and return an Image
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GetTextureData(Texture2D texture);

        // Get pixel data from screen buffer and return an Image (screenshot)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GetScreenData();


        // Texture configuration functions

        // Generate GPU mipmaps for a texture
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void GenTextureMipmaps(ref Texture2D texture);

        // Set texture scaling filter mode
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetTextureFilter(Texture2D texture, TextureFilterMode filterMode);

        // Set texture wrapping mode
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetTextureWrap(Texture2D texture, TextureWrapMode wrapMode);


        // Texture drawing functions

        // Draw a Texture2D
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTexture(Texture2D texture, int posX, int posY, Color tint);

        // Draw a Texture2D with position defined as Vector2
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTextureV(Texture2D texture, Vector2 position, Color tint);

        // Draw a Texture2D with extended parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTextureEx(Texture2D texture, Vector2 position, float rotation, float scale, Color tint);

        // Draw a part of a texture defined by a rectangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTextureRec(Texture2D texture, Rectangle sourceRec, Vector2 position, Color tint);

        // Draw texture quad with tiling and offset parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTextureQuad(Texture2D texture, Vector2 tiling, Vector2 offset, Rectangle quad, Color tint);

        // Draw a part of a texture defined by a rectangle with 'pro' parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTexturePro(Texture2D texture, Rectangle sourceRec, Rectangle destRec, Vector2 origin, float rotation, Color tint);

        // Draws a texture (or part of it) that stretches or shrinks nicely
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTextureNPatch(Texture2D texture, NPatchInfo nPatchInfo, Rectangle destRec, Vector2 origin, float rotation, Color tint);


        // Image/Texture misc functions

        // Get pixel data size in bytes (image or texture)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetPixelDataSize(int width, int height, int format);

        //------------------------------------------------------------------------------------
        // Font Loading and Text Drawing Functions (Module: text)
        //------------------------------------------------------------------------------------

        // Font loading/unloading functions

        // Get the default Font
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Font GetFontDefault();

        // Load font from file into GPU memory (VRAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Font LoadFont(string fileName);

        // Load font from file with extended parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Font LoadFontEx(string fileName, int fontSize, int[] fontChars, int charsCount);

        // Load font from Image (XNA style)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Font LoadFontFromImage(Image image, Color key, int firstChar);

        // Load font data for further use
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern IntPtr LoadFontData(string fileName, int fontSize, int[] fontChars, int charsCount, FontType type);

        // Generate image font atlas using chars info
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Image GenImageFontAtlas(IntPtr chars, ref IntPtr recs, int charsCount, int fontSize, int padding, int packMethod);

        // Unload Font from GPU memory (VRAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadFont(Font font);


        // Text drawing functions

        // Shows current FPS
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawFPS(int posX, int posY);

        // Draw text (using default font)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawText(string text, int posX, int posY, int fontSize, Color color);

        // Draw text using font and additional parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTextEx(Font font, string text, Vector2 position, float fontSize, float spacing, Color tint);

        // Draw text using font inside rectangle limits
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTextRec(Font font, string text, Rectangle rec, float fontSize, float spacing, bool wordWrap, Color tint);

        // Draw text using font inside rectangle limits with support for text selection
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTextRecEx(Font font, string text, Rectangle rec, float fontSize, float spacing, bool wordWrap, Color tint, int selectStart, int selectLength, Color selectText, Color selectBack);

        // Draw one character (codepoint)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawTextCodepoint(Font font, int codepoint, Vector2 position, float scale, Color tint);


        // Text misc. functions

        // Measure string width for default font
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int MeasureText(string text, int fontSize);

        // Measure string size for Font
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Vector2 MeasureTextEx(Font font, string text, float fontSize, float spacing);

        // Get index position for a unicode character on font
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetGlyphIndex(Font font, int character);

        // Text strings management functions
        // NOTE: Some strings allocate memory internally for returned strings, just be careful!

        // Check if two text string are equal
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool TextIsEqual(string text1, string text2);

        // Get text length, checks for '\0' ending
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern uint TextLength(string text);

        // Get total number of characters (codepoints) in a UTF8 encoded string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern uint TextCountCodepoints(string text);

        // Text formatting with variables (sprintf style)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string TextFormat(string text);

        // Get a piece of a text string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string TextSubtext(string text, int position, int length);

        // Replace text string (memory should be freed!)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string TextReplace(string text, string replace, string by);

        // Insert text in a position (memory should be freed!)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string TextInsert(string text, string insert, int position);

        // Join text strings with delimiter
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string TextJoin(string[] textList, int count, string delimiter);

        // Split text into multiple strings
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string[] TextSplit(string text, char delimiter, ref int count);

        // Append text at specific position and move cursor!
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void TextAppend(ref char text, string append, ref int position);

        // Find first text occurrence within a string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int TextFindIndex(string text, string find);

        // Get upper case version of provided string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string TextToUpper(string text);

        // Get lower case version of provided string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string TextToLower(string text);

        // Get Pascal case notation version of provided string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string TextToPascal(string text);

        // Get integer value from text (negative values not supported)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int TextToInteger(string text);

        // Get total number of characters (codepoints) in a UTF8 encoded string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string TextToUtf8(string text, int length);


        // UTF8 text strings management functions

        // Returns next codepoint in a UTF8 encoded string
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int[] GetCodepoints(string text, ref int count);

        // Get all codepoints in a string, codepoints count returned by parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetCodepointsCount(string text);

        // Returns next codepoint in a UTF8 encoded string; 0x3f('?') is returned on failure
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetNextCodepoint(string text, ref int bytesProcessed);

        // Encode codepoint into utf8 text (char array length returned as parameter)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern string CodepointToUtf8(string text, ref int byteLength);

        //------------------------------------------------------------------------------------
        // Basic 3d Shapes Drawing Functions (Module: models)
        //------------------------------------------------------------------------------------

        // Basic geometric 3D shapes drawing functions

        // Draw a line in 3D world space
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawLine3D(Vector3 startPos, Vector3 endPos, Color color);

        // Draw a point in 3D space, actually a small line
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawPoint3D(Vector3 position, Color color);

        // Draw a circle in 3D world space
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCircle3D(Vector3 center, float radius, Vector3 rotationAxis, float rotationAngle, Color color);

        // Draw cube
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCube(Vector3 position, float width, float height, float length, Color color);

        // Draw cube (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCubeV(Vector3 position, Vector3 size, Color color);

        // Draw cube wires
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCubeWires(Vector3 position, float width, float height, float length, Color color);

        // Draw cube wires (Vector version)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCubeWiresV(Vector3 position, Vector3 size, Color color);

        // Draw cube textured
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCubeTexture(Texture2D texture, Vector3 position, float width, float height, float length, Color color);

        // Draw sphere
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawSphere(Vector3 centerPos, float radius, Color color);

        // Draw sphere with extended parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawSphereEx(Vector3 centerPos, float radius, int rings, int slices, Color color);

        // Draw sphere wires
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawSphereWires(Vector3 centerPos, float radius, int rings, int slices, Color color);

        // Draw a cylinder/cone
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCylinder(Vector3 position, float radiusTop, float radiusBottom, float height, int slices, Color color);

        // Draw a cylinder/cone wires
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawCylinderWires(Vector3 position, float radiusTop, float radiusBottom, float height, int slices, Color color);

        // Draw a plane XZ
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawPlane(Vector3 centerPos, Vector2 size, Color color);

        // Draw a ray line
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawRay(Ray ray, Color color);

        // Draw a grid (centered at (0, 0, 0))
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawGrid(int slices, float spacing);

        // Draw simple gizmo
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawGizmo(Vector3 position);

        //------------------------------------------------------------------------------------
        // Model 3d Loading and Drawing Functions (Module: models)
        //------------------------------------------------------------------------------------

        // Model loading/unloading functions

        // Load model from files (meshes and materials)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Model LoadModel(string fileName);

        // Load model from generated mesh (default material)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Model LoadModelFromMesh(Mesh mesh);

        // Unload model from memory (RAM and/or VRAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadModel(Model model);


        // Mesh loading/unloading functions

        // Load meshes from model file
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh[] LoadMeshes(string fileName, ref int meshCount);

        // Export mesh data to file
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ExportMesh(Mesh mesh, string fileName);

        // Unload mesh from memory (RAM and/or VRAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadMesh(ref Mesh mesh);


        // Material loading/unloading functions

        // Load materials from model file
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Material[] LoadMaterials(string fileName, ref int materialCount);

        // Load default material (Supports: DIFFUSE, SPECULAR, NORMAL maps)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Material LoadMaterialDefault();

        // Unload material from GPU memory (VRAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadMaterial(Material material);

        // Set texture for a material map type (MAP_DIFFUSE, MAP_SPECULAR...)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMaterialTexture(ref Material material, int mapType, Texture2D texture);

        // Set material for a mesh
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetModelMeshMaterial(ref Model model, int meshId, int materialId);


        // Model animations loading/unloading functions

        // Load model animations from file
        // IntPtr refers to ModelAnimation *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern IntPtr LoadModelAnimations(string fileName, ref int animsCount);

        // Update model animation pose
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UpdateModelAnimation(Model model, ModelAnimation anim, int frame);

        // Unload animation data
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadModelAnimation(ModelAnimation anim);

        // Check model animation skeleton match
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsModelAnimationValid(Model model, ModelAnimation anim);


        // Mesh generation functions

        // Generate polygonal mesh
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshPoly(int sides, float radius);

        // Generate plane mesh (with subdivisions)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshPlane(float width, float length, int resX, int resZ);

        // Generate cuboid mesh
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshCube(float width, float height, float length);

        // Generate sphere mesh (standard sphere)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshSphere(float radius, int rings, int slices);

        // Generate half-sphere mesh (no bottom cap)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshHemiSphere(float radius, int rings, int slices);

        // Generate cylinder mesh
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshCylinder(float radius, float height, int slices);

        // Generate torus mesh
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshTorus(float radius, float size, int radSeg, int sides);

        // Generate trefoil knot mesh
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshKnot(float radius, float size, int radSeg, int sides);

        // Generate heightmap mesh from image data
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshHeightmap(Image heightmap, Vector3 size);

        // Generate cubes-based map mesh from image data
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Mesh GenMeshCubicmap(Image cubicmap, Vector3 cubeSize);


        // Mesh manipulation functions

        // Compute mesh bounding box limits
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern BoundingBox MeshBoundingBox(Mesh mesh);

        // Compute mesh tangents
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void MeshTangents(ref Mesh mesh);

        // Compute mesh binormals
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void MeshBinormals(ref Mesh mesh);


        // Model drawing functions

        // Draw a model (with texture if set)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawModel(Model model, Vector3 position, float scale, Color tint);

        // Draw a model with extended parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawModelEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint);

        // Draw a model wires (with texture if set)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawModelWires(Model model, Vector3 position, float scale, Color tint);

        // Draw a model wires (with texture if set) with extended parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawModelWiresEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint);

        // Draw bounding box (wires)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawBoundingBox(BoundingBox box, Color color);

        // Draw a billboard texture
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawBillboard(Camera3D camera, Texture2D texture, Vector3 center, float size, Color tint);

        // Draw a billboard texture defined by sourceRec
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void DrawBillboardRec(Camera3D camera, Texture2D texture, Rectangle sourceRec, Vector3 center, float size, Color tint);


        // Collision detection functions

        // Detect collision between two spheres
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionSpheres(Vector3 centerA, float radiusA, Vector3 centerB, float radiusB);

        // Detect collision between two bounding boxes
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionBoxes(BoundingBox box1, BoundingBox box2);

        // Detect collision between box and sphere
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionBoxSphere(BoundingBox box, Vector3 centerSphere, float radiusSphere);

        // Detect collision between ray and sphere
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionRaySphere(Ray ray, Vector3 spherePosition, float sphereRadius);

        // Detect collision between ray and sphere, returns collision point
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionRaySphereEx(Ray ray, Vector3 spherePosition, float sphereRadius, ref Vector3 collisionPoint);

        // Detect collision between ray and box
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool CheckCollisionRayBox(Ray ray, BoundingBox box);

        // Get collision info between ray and model
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern RayHitInfo GetCollisionRayModel(Ray ray, Model model);

        // Get collision info between ray and triangle
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern RayHitInfo GetCollisionRayTriangle(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3);

        // Get collision info between ray and ground plane (Y-normal plane)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern RayHitInfo GetCollisionRayGround(Ray ray, float groundHeight);

        //------------------------------------------------------------------------------------
        // Shaders System Functions (Module: rlgl)
        // NOTE: This functions are useless when using OpenGL 1.1
        //------------------------------------------------------------------------------------

        // Shader loading/unloading functions

        // Load shader from files and bind default locations
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Shader LoadShader(string vsFileName, string fsFileName);

        // Load shader from code strings and bind default locations
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Shader LoadShaderCode(string vsCode, string fsCode);

        // Unload shader from GPU memory (VRAM)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadShader(Shader shader);

        // Get default shader
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Shader GetShaderDefault();

        // Get default texture
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Texture2D GetTextureDefault();

        // Get texture to draw shapes
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Texture2D GetShapesTexture();

        // Get texture rectangle to draw shapes
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Rectangle GetShapesTextureRec();

        // Define default texture used to draw shapes
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetShapesTexture(Texture2D texture, Rectangle source);


        // Shader configuration functions

        // Get shader uniform location
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetShaderLocation(Shader shader, string uniformName);

        // Set shader uniform value
        // value refers to a const void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetShaderValue(Shader shader, int uniformLoc, IntPtr value, ShaderUniformDataType uniformType);

        // Set shader uniform value
        // value refers to a const void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetShaderValue(Shader shader, int uniformLoc, ref int value, ShaderUniformDataType uniformType);

        // Set shader uniform value
        // value refers to a const void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetShaderValue(Shader shader, int uniformLoc, ref float value, ShaderUniformDataType uniformType);

        // Set shader uniform value vector
        // value refers to a const void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetShaderValueV(Shader shader, int uniformLoc, IntPtr value, ShaderUniformDataType uniformType, int count);

        // Set shader uniform value (matrix 4x4)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetShaderValueMatrix(Shader shader, int uniformLoc, Matrix mat);

        // Set shader uniform value for texture
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetShaderValueTexture(Shader shader, int uniformLoc, Texture2D texture);

        // Set a custom projection matrix (replaces internal projection matrix)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMatrixProjection(Matrix proj);

        // Set a custom modelview matrix (replaces internal modelview matrix)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMatrixModelview(Matrix view);

        // Get internal modelview matrix
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Matrix GetMatrixModelview();

        // Get internal projection matrix
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Matrix GetMatrixProjection();


        // Texture maps generation (PBR)
        // NOTE: Required shaders should be provided

        // Generate cubemap texture from HDR texture
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Texture2D GenTextureCubemap(Shader shader, Texture2D skyHDR, int size);

        // Generate irradiance texture using cubemap data
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Texture2D GenTextureIrradiance(Shader shader, Texture2D cubemap, int size);

        // Generate prefilter texture using cubemap data
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Texture2D GenTexturePrefilter(Shader shader, Texture2D cubemap, int size);

        // Generate BRDF texture
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Texture2D GenTextureBRDF(Shader shader, int size);


        // Shading begin/end functions

        // Begin custom shader drawing
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void BeginShaderMode(Shader shader);

        // End custom shader drawing (use default shader)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void EndShaderMode();

        // Begin blending mode (alpha, additive, multiplied)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void BeginBlendMode(BlendMode mode);

        // End blending mode (reset to default: alpha blending)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void EndBlendMode();


        // VR control functions

        // Init VR simulator for selected device parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void InitVrSimulator();

        // Close VR simulator for current device
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void CloseVrSimulator();

        // Update VR tracking (position and orientation) and camera
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UpdateVrTracking(ref Camera3D camera);

        // Set stereo rendering configuration parameters
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetVrConfiguration(VrDeviceInfo info, Shader distortion);

        // Detect if VR simulator is ready
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsVrSimulatorReady();

        // Enable/Disable VR experience
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ToggleVrMode();

        // Begin VR simulator stereo rendering
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void BeginVrDrawing();

        // End VR simulator stereo rendering
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void EndVrDrawing();

        //------------------------------------------------------------------------------------
        // Audio Loading and Playing Functions (Module: audio)
        //------------------------------------------------------------------------------------

        // Audio device management functions

        // Initialize audio device and context
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void InitAudioDevice();

        // Close the audio device and context
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void CloseAudioDevice();

        // Check if audio device has been initialized successfully
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsAudioDeviceReady();

        // Set master volume (listener)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMasterVolume(float volume);


        // Wave/Sound loading/unloading functions

        // Load wave data from file
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Wave LoadWave(string fileName);

        // Load wave data from raw array data
        // data refers to a void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Wave LoadWaveEx(IntPtr data, int sampleCount, int sampleRate, int sampleSize, int channels);

        // Load sound from file
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Sound LoadSound(string fileName);

        // Load sound from wave data
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Sound LoadSoundFromWave(Wave wave);

        // Update sound buffer with new data
        // data refers to a const void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UpdateSound(Sound sound, IntPtr data, int samplesCount);

        // Unload wave data
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadWave(Wave wave);

        // Unload sound
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadSound(Sound sound);

        // Export wave data to file
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ExportWave(Wave wave, string fileName);

        // Export wave sample data to code (.h)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ExportWaveAsCode(Wave wave, string fileName);


        // Wave/Sound management functions

        // Play a sound
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void PlaySound(Sound sound);

        // Stop playing a sound
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void StopSound(Sound sound);

        // Pause a sound
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void PauseSound(Sound sound);

        // Resume a paused sound
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ResumeSound(Sound sound);

        // Play a sound (using multichannel buffer pool)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void PlaySoundMulti(Sound sound);

        // Stop any sound playing (using multichannel buffer pool)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void StopSoundMulti();

        // Get number of sounds playing in the multichannel
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern int GetSoundsPlaying();

        // Check if a sound is currently playing
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsSoundPlaying(Sound sound);

        // Set volume for a sound (1.0 is max level)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetSoundVolume(Sound sound, float volume);

        // Set pitch for a sound (1.0 is base level)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetSoundPitch(Sound sound, float pitch);

        // Convert wave data to desired format
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void WaveFormat(ref Wave wave, int sampleRate, int sampleSize, int channels);

        // Copy a wave to a new wave
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Wave WaveCopy(Wave wave);

        // Crop a wave to defined samples range
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void WaveCrop(ref Wave wave, int initSample, int finalSample);

        // Get samples data from wave as a floats array
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern float[] GetWaveData(Wave wave);


        // Music management functions

        // Load music stream from file
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern Music LoadMusicStream(string fileName);

        // Unload music stream
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UnloadMusicStream(Music music);

        // Start music playing
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void PlayMusicStream(Music music);

        // Updates buffers for music streaming
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UpdateMusicStream(Music music);

        // Stop music playing
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void StopMusicStream(Music music);

        // Pause music playing
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void PauseMusicStream(Music music);

        // Resume playing paused music
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ResumeMusicStream(Music music);

        // Check if music is playing
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsMusicPlaying(Music music);

        // Set volume for music (1.0 is max level)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMusicVolume(Music music, float volume);

        // Set pitch for a music (1.0 is base level)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMusicPitch(Music music, float pitch);

        // Set music loop count (loop repeats)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetMusicLoopCount(Music music, int count);

        // Get music time length (in seconds)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern float GetMusicTimeLength(Music music);

        // Get current music time played (in seconds)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern float GetMusicTimePlayed(Music music);


        // AudioStream management functions

        // Init audio stream (to stream raw audio pcm data)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern AudioStream InitAudioStream(uint sampleRate, uint sampleSize, uint channels);

        // Update audio stream buffers with data
        // data refers to a const void *
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void UpdateAudioStream(AudioStream stream, IntPtr data, int samplesCount);

        // Close audio stream and free memory
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void CloseAudioStream(AudioStream stream);

        // Check if any audio stream buffers requires refill
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsAudioStreamProcessed(AudioStream stream);

        // Play audio stream
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void PlayAudioStream(AudioStream stream);

        // Pause audio stream
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void PauseAudioStream(AudioStream stream);

        // Resume audio stream
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void ResumeAudioStream(AudioStream stream);

        // Check if audio stream is playing
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        [return: MarshalAs(UnmanagedType.I1)]
        public static extern bool IsAudioStreamPlaying(AudioStream stream);

        // Stop audio stream
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void StopAudioStream(AudioStream stream);

        // Set volume for audio stream (1.0 is max level)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetAudioStreamVolume(AudioStream stream, float volume);

        // Set pitch for audio stream (1.0 is base level)
        [DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
        public static extern void SetAudioStreamPitch(AudioStream stream, float pitch);
    }
}