221 lines
8.4 KiB
C#
221 lines
8.4 KiB
C#
/*******************************************************************************************
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*
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* raylib [core] example - 3d camera first person
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*
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* Example complexity rating: [★★☆☆] 2/4
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*
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* Example originally created with raylib 1.3, last time updated with raylib 1.3
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*
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
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* BSD-like license that allows static linking with closed source software
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*
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* Copyright (c) 2015-2025 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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using System.Numerics;
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using static Raylib_cs.Raylib;
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namespace Examples.Core;
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public partial class Camera3dFirstPerson : IExample
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{
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public const int MaxColumns = 20;
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private const int screenWidth = 800;
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private const int screenHeight = 450;
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public string Name => "Core / Camera 3D First Person";
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public string Title => "raylib [core] example - 3d camera first person";
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public bool CursorDisabled => true;
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private Camera3D camera;
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private CameraMode cameraMode;
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private float[] heights;
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private Vector3[] positions;
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private Color[] colors;
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public void Init()
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{
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// Define the camera to look into our 3d world (position, target, up vector)
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camera = new();
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camera.Position = new Vector3(0.0f, 2.0f, 4.0f); // Camera position
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camera.Target = new Vector3(0.0f, 2.0f, 0.0f); // Camera looking at point
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f); // Camera up vector (rotation towards target)
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camera.FovY = 60.0f; // Camera field-of-view Y
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camera.Projection = CameraProjection.Perspective; // Camera projection type
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cameraMode = CameraMode.FirstPerson;
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// Generates some random columns
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heights = new float[MaxColumns];
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positions = new Vector3[MaxColumns];
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colors = new Color[MaxColumns];
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for (var i = 0; i < MaxColumns; i++)
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{
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heights[i] = (float)GetRandomValue(1, 12);
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positions[i] = new Vector3(GetRandomValue(-15, 15), heights[i] / 2.0f, GetRandomValue(-15, 15));
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colors[i] = new Color(GetRandomValue(20, 255), GetRandomValue(10, 55), 30, 255);
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}
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}
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public void Update()
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{
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// Update
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//----------------------------------------------------------------------------------
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// Switch camera mode
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if (IsKeyPressed(KeyboardKey.One))
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{
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cameraMode = CameraMode.Free;
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f);
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}
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if (IsKeyPressed(KeyboardKey.Two))
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{
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cameraMode = CameraMode.FirstPerson;
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f);
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}
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if (IsKeyPressed(KeyboardKey.Three))
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{
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cameraMode = CameraMode.ThirdPerson;
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f);
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}
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if (IsKeyPressed(KeyboardKey.Four))
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{
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cameraMode = CameraMode.Orbital;
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f);
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}
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// Switch camera projection
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if (IsKeyPressed(KeyboardKey.P))
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{
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if (camera.Projection == CameraProjection.Perspective)
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{
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// Create isometric view
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cameraMode = CameraMode.ThirdPerson;
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// Note: The target distance is related to the render distance in the orthographic projection
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camera.Position = new Vector3(0.0f, 2.0f, -100.0f);
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camera.Target = new Vector3(0.0f, 2.0f, 0.0f);
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f);
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camera.Projection = CameraProjection.Orthographic;
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camera.FovY = 20.0f; // near plane width in CAMERA_ORTHOGRAPHIC
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// CameraYaw(&camera, -135 * DEG2RAD, true);
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// CameraPitch(&camera, -45 * DEG2RAD, true, true, false);
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}
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else if (camera.Projection == CameraProjection.Orthographic)
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{
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// Reset to default view
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cameraMode = CameraMode.ThirdPerson;
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camera.Position = new Vector3(0.0f, 2.0f, 10.0f);
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camera.Target = new Vector3(0.0f, 2.0f, 0.0f);
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f);
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camera.Projection = CameraProjection.Perspective;
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camera.FovY = 60.0f;
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}
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}
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// Update camera computes movement internally depending on the camera mode
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// Some default standard keyboard/mouse inputs are hardcoded to simplify use
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// For advanced camera controls, it's recommended to compute camera movement manually
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UpdateCamera(ref camera, cameraMode); // Update camera
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(Color.RayWhite);
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BeginMode3D(camera);
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// Draw ground
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DrawPlane(new Vector3(0.0f, 0.0f, 0.0f), new Vector2(32.0f, 32.0f), Color.LightGray);
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// Draw a blue wall
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DrawCube(new Vector3(-16.0f, 2.5f, 0.0f), 1.0f, 5.0f, 32.0f, Color.Blue);
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// Draw a green wall
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DrawCube(new Vector3(16.0f, 2.5f, 0.0f), 1.0f, 5.0f, 32.0f, Color.Lime);
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// Draw a yellow wall
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DrawCube(new Vector3(0.0f, 2.5f, 16.0f), 32.0f, 5.0f, 1.0f, Color.Gold);
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// Draw some cubes around
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for (var i = 0; i < MaxColumns; i++)
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{
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DrawCube(positions[i], 2.0f, heights[i], 2.0f, colors[i]);
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DrawCubeWires(positions[i], 2.0f, heights[i], 2.0f, Color.Maroon);
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}
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// Draw player cube
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if (cameraMode == CameraMode.ThirdPerson)
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{
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DrawCube(camera.Target, 0.5f, 0.5f, 0.5f, Color.Purple);
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DrawCubeWires(camera.Target, 0.5f, 0.5f, 0.5f, Color.DarkPurple);
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}
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EndMode3D();
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// Draw info boxes
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DrawRectangle(5, 5, 330, 100, Fade(Color.SkyBlue, 0.5f));
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DrawRectangleLines(5, 5, 330, 100, Color.Blue);
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DrawText("Camera controls:", 15, 15, 10, Color.Black);
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DrawText("- Move keys: W, A, S, D, Space, Left-Ctrl", 15, 30, 10, Color.Black);
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DrawText("- Look around: arrow keys or mouse", 15, 45, 10, Color.Black);
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DrawText("- Camera mode keys: 1, 2, 3, 4", 15, 60, 10, Color.Black);
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DrawText("- Zoom keys: num-plus, num-minus or mouse scroll", 15, 75, 10, Color.Black);
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DrawText("- Camera projection key: P", 15, 90, 10, Color.Black);
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DrawRectangle(600, 5, 195, 100, Fade(Color.SkyBlue, 0.5f));
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DrawRectangleLines(600, 5, 195, 100, Color.Blue);
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DrawText("Camera status:", 610, 15, 10, Color.Black);
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DrawText($"- Mode: {cameraMode}", 610, 30, 10, Color.Black);
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DrawText($"- Projection: {camera.Projection}", 610, 45, 10, Color.Black);
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DrawText($"- Position: {camera.Position}", 610, 60, 10, Color.Black);
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DrawText($"- Target: {camera.Target}", 610, 75, 10, Color.Black);
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DrawText($"- Up: {camera.Up}", 610, 90, 10, Color.Black);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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public void Unload()
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{
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}
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public static int Main()
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d camera first person");
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DisableCursor(); // Limit cursor to relative movement inside the window
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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//--------------------------------------------------------------------------------------
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var game = new Camera3dFirstPerson();
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game.Init();
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// Main game loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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game.Update();
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}
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game.Unload();
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// De-Initialization
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//--------------------------------------------------------------------------------------
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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}
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