chore: clean recommit
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122 changed files with 23950 additions and 323 deletions
433
Examples/Shaders/GameOfLife.cs
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433
Examples/Shaders/GameOfLife.cs
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/*******************************************************************************************
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*
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* raylib [shaders] example - game of life
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*
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* Example complexity rating: [★★★☆] 3/4
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*
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* NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
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* OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version
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*
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* Example originally created with raylib 6.0, last time updated with raylib 6.0
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*
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* Example contributed by Jordi Santonja (@JordSant) and reviewed by Ramon Santamaria (@raysan5)
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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) 2025 Jordi Santonja (@JordSant)
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*
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********************************************************************************************/
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using System;
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using System.Numerics;
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using static Raylib_cs.Raylib;
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namespace Examples.Shaders;
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public partial class GameOfLife : IExample
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{
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private const int screenWidth = 800;
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private const int screenHeight = 450;
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#if BROWSER
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const int GlslVersion = 100; // WebGL1 needs GLSL ES 100
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#else
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private const int GlslVersion = 330;
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#endif
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public string Name => "Shaders / Game of Life";
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public string Title => "raylib [shaders] example - game of life";
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// Interaction mode
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private enum InteractionMode
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{
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Run = 0,
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Pause,
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Draw,
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}
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// Struct to store example preset patterns
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private struct PresetPattern
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{
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public string Name;
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public Vector2 Position;
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public PresetPattern(string name, Vector2 position)
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{
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Name = name;
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Position = position;
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}
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}
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private const int menuWidth = 100;
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private const int windowWidth = screenWidth - menuWidth;
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private const int windowHeight = screenHeight;
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private const int worldWidth = 2048;
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private const int worldHeight = 2048;
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private const int randomTiles = 8; // Random preset: divide the world to compute random points in each tile
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private static readonly PresetPattern[] presetPatterns =
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{
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new("Glider", new Vector2(0.5f, 0.5f)), new("R-pentomino", new Vector2(0.5f, 0.5f)), new("Acorn", new Vector2(0.5f, 0.5f)),
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new("Spaceships", new Vector2(0.1f, 0.5f)), new("Still lifes", new Vector2(0.5f, 0.5f)), new("Oscillators", new Vector2(0.5f, 0.5f)),
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new("Puffer train", new Vector2(0.1f, 0.5f)), new("Glider Gun", new Vector2(0.2f, 0.2f)), new("Breeder", new Vector2(0.1f, 0.5f)),
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new("Random", new Vector2(0.5f, 0.5f))
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};
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private static readonly int numberOfPresets = presetPatterns.Length;
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private Rectangle worldRectSource;
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private Rectangle worldRectDest;
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private Rectangle textureOnScreen;
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private int zoom;
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private float offsetX;
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private float offsetY;
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private int framesPerStep;
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private int frame;
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private int preset;
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private InteractionMode mode;
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private bool buttonZoomIn;
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private bool buttonZomOut;
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private bool buttonFaster;
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private bool buttonSlower;
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private Shader shdrGameOfLife;
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private int resolutionLoc;
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private RenderTexture2D world1;
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private RenderTexture2D world2;
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private RenderTexture2D currentWorld;
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private RenderTexture2D previousWorld;
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// Image to be used in DRAW mode, to be changed with mouse input
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private Image imageToDraw;
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private bool imageToDrawValid;
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// Static locals in the original loop, promoted to fields
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private Vector2 previousMousePosition;
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private int firstColor;
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private void FreeImageToDraw()
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{
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if (imageToDrawValid)
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{
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UnloadImage(imageToDraw);
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imageToDrawValid = false;
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}
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}
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public unsafe void Init()
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{
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worldRectSource = new Rectangle(0, 0, worldWidth, -worldHeight);
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worldRectDest = new Rectangle(0, 0, worldWidth, worldHeight);
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textureOnScreen = new Rectangle(0, 0, windowWidth, windowHeight);
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zoom = 1;
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offsetX = (worldWidth - windowWidth) / 2.0f; // Centered on window
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offsetY = (worldHeight - windowHeight) / 2.0f; // Centered on window
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framesPerStep = 1;
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frame = 0;
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preset = -1; // No button pressed for preset
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mode = InteractionMode.Run; // Starting mode: running
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buttonZoomIn = false; // Button states: false not pressed
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buttonZomOut = false;
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buttonFaster = false;
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buttonSlower = false;
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previousMousePosition = new Vector2(0.0f, 0.0f);
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firstColor = -1;
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imageToDrawValid = false;
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// Load shader
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shdrGameOfLife = LoadShader(null, $"resources/shaders/glsl{GlslVersion}/game_of_life.fs");
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// Set shader uniform size of the world
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resolutionLoc = GetShaderLocation(shdrGameOfLife, "resolution");
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var resolution = new[] { (float)worldWidth, (float)worldHeight };
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Raylib.SetShaderValue(shdrGameOfLife, resolutionLoc, resolution, ShaderUniformDataType.Vec2);
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// Define two textures: the current world and the previous world
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world1 = LoadRenderTexture(worldWidth, worldHeight);
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world2 = LoadRenderTexture(worldWidth, worldHeight);
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BeginTextureMode(world2);
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ClearBackground(Color.RayWhite);
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EndTextureMode();
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var startPattern = LoadImage("resources/game_of_life/r_pentomino.png");
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UpdateTextureRec(
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world2.Texture,
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new Rectangle(worldWidth / 2.0f, worldHeight / 2.0f, startPattern.Width, startPattern.Height),
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startPattern.Data
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);
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UnloadImage(startPattern);
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// References to the two textures, to be swapped
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currentWorld = world2;
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previousWorld = world1;
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}
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public unsafe void Update()
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{
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// Update
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//----------------------------------------------------------------------------------
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frame++;
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// Change zoom: both by buttons or by mouse wheel
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var mouseWheelMove = GetMouseWheelMove();
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if (buttonZoomIn || (buttonZomOut && (zoom > 1)) || (mouseWheelMove != 0.0f))
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{
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FreeImageToDraw(); // Zoom change: free the image to draw to be recreated again
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var centerX = offsetX + (windowWidth / 2.0f) / zoom;
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var centerY = offsetY + (windowHeight / 2.0f) / zoom;
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if (buttonZoomIn || (mouseWheelMove > 0.0f)) zoom *= 2;
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if ((buttonZomOut || (mouseWheelMove < 0.0f)) && (zoom > 1)) zoom /= 2;
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offsetX = centerX - (windowWidth / 2.0f) / zoom;
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offsetY = centerY - (windowHeight / 2.0f) / zoom;
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}
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// Change speed: number of frames per step
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if (buttonFaster && framesPerStep > 1) framesPerStep--;
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if (buttonSlower) framesPerStep++;
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// Mouse management
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if ((mode == InteractionMode.Run) || (mode == InteractionMode.Pause))
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{
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FreeImageToDraw(); // Free the image to draw: no longer needed in these modes
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// Pan with mouse left button
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var mousePosition = GetMousePosition();
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if (IsMouseButtonDown(MouseButton.Left) && (mousePosition.X < windowWidth))
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{
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offsetX -= (mousePosition.X - previousMousePosition.X) / zoom;
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offsetY -= (mousePosition.Y - previousMousePosition.Y) / zoom;
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}
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previousMousePosition = mousePosition;
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}
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else // MODE_DRAW
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{
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var offsetDecimalX = offsetX - MathF.Floor(offsetX);
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var offsetDecimalY = offsetY - MathF.Floor(offsetY);
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var sizeInWorldX = (int)(MathF.Ceiling((windowWidth + offsetDecimalX * zoom) / zoom));
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var sizeInWorldY = (int)(MathF.Ceiling((windowHeight + offsetDecimalY * zoom) / zoom));
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if (offsetX + sizeInWorldX >= worldWidth) sizeInWorldX = worldWidth - (int)MathF.Floor(offsetX);
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if (offsetY + sizeInWorldY >= worldHeight) sizeInWorldY = worldHeight - (int)MathF.Floor(offsetY);
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// Create image to draw if not created yet
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if (!imageToDrawValid)
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{
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var worldOnScreen = LoadRenderTexture(sizeInWorldX, sizeInWorldY);
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BeginTextureMode(worldOnScreen);
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DrawTexturePro(
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currentWorld.Texture,
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new Rectangle(MathF.Floor(offsetX), MathF.Floor(offsetY), sizeInWorldX, -sizeInWorldY),
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new Rectangle(0, 0, sizeInWorldX, sizeInWorldY),
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new Vector2(0, 0), 0.0f, Color.White
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);
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EndTextureMode();
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imageToDraw = LoadImageFromTexture(worldOnScreen.Texture);
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imageToDrawValid = true;
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UnloadRenderTexture(worldOnScreen);
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}
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var mousePosition = GetMousePosition();
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if (IsMouseButtonDown(MouseButton.Left) && (mousePosition.X < windowWidth))
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{
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var mouseX = (int)(mousePosition.X + offsetDecimalX * zoom) / zoom;
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var mouseY = (int)(mousePosition.Y + offsetDecimalY * zoom) / zoom;
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if (mouseX >= sizeInWorldX) mouseX = sizeInWorldX - 1;
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if (mouseY >= sizeInWorldY) mouseY = sizeInWorldY - 1;
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if (firstColor == -1) firstColor = (GetImageColor(imageToDraw, mouseX, mouseY).R < 5) ? 0 : 1;
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var prevColor = (GetImageColor(imageToDraw, mouseX, mouseY).R < 5) ? 0 : 1;
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ImageDrawPixel(ref imageToDraw, mouseX, mouseY, (firstColor != 0) ? Color.Black : Color.RayWhite);
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if (prevColor != firstColor)
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{
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UpdateTextureRec(
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currentWorld.Texture,
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new Rectangle(MathF.Floor(offsetX), MathF.Floor(offsetY), sizeInWorldX, sizeInWorldY),
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imageToDraw.Data
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);
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}
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}
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else firstColor = -1;
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}
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// Load selected preset
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if (preset >= 0)
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{
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Image pattern;
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if (preset < numberOfPresets - 1) // Preset with pattern image to load
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{
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pattern = preset switch
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{
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0 => LoadImage("resources/game_of_life/glider.png"),
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1 => LoadImage("resources/game_of_life/r_pentomino.png"),
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2 => LoadImage("resources/game_of_life/acorn.png"),
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3 => LoadImage("resources/game_of_life/spaceships.png"),
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4 => LoadImage("resources/game_of_life/still_lifes.png"),
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5 => LoadImage("resources/game_of_life/oscillators.png"),
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6 => LoadImage("resources/game_of_life/puffer_train.png"),
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7 => LoadImage("resources/game_of_life/glider_gun.png"),
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8 => LoadImage("resources/game_of_life/breeder.png"),
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_ => default,
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};
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BeginTextureMode(currentWorld);
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ClearBackground(Color.RayWhite);
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EndTextureMode();
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UpdateTextureRec(
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currentWorld.Texture,
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new Rectangle(
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worldWidth * presetPatterns[preset].Position.X - pattern.Width / 2.0f,
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worldHeight * presetPatterns[preset].Position.Y - pattern.Height / 2.0f,
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pattern.Width, pattern.Height
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),
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pattern.Data
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);
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}
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else // Last preset: Random values
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{
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pattern = GenImageColor(worldWidth / randomTiles, worldHeight / randomTiles, Color.RayWhite);
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for (var i = 0; i < randomTiles; i++)
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{
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for (var j = 0; j < randomTiles; j++)
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{
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ImageClearBackground(ref pattern, Color.RayWhite);
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for (var x = 0; x < pattern.Width; x++)
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{
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for (var y = 0; y < pattern.Height; y++)
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{
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if (GetRandomValue(0, 100) < 15) ImageDrawPixel(ref pattern, x, y, Color.Black);
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}
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}
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UpdateTextureRec(
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currentWorld.Texture,
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new Rectangle(pattern.Width * i, pattern.Height * j, pattern.Width, pattern.Height),
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pattern.Data
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);
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}
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}
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}
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UnloadImage(pattern);
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mode = InteractionMode.Pause;
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offsetX = worldWidth * presetPatterns[preset].Position.X - (float)windowWidth / zoom / 2.0f;
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offsetY = worldHeight * presetPatterns[preset].Position.Y - (float)windowHeight / zoom / 2.0f;
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}
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// Check window draw inside world limits
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if (offsetX < 0) offsetX = 0;
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if (offsetY < 0) offsetY = 0;
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if (offsetX > worldWidth - (float)windowWidth / zoom) offsetX = worldWidth - (float)windowWidth / zoom;
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if (offsetY > worldHeight - (float)windowHeight / zoom) offsetY = worldHeight - (float)windowHeight / zoom;
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// Rectangles for drawing texture portion to screen
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var textureSourceToScreen = new Rectangle(offsetX, offsetY, (float)windowWidth / zoom, (float)windowHeight / zoom);
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//----------------------------------------------------------------------------------
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// Draw to texture
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//----------------------------------------------------------------------------------
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if ((mode == InteractionMode.Run) && ((frame % framesPerStep) == 0))
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{
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// Swap worlds
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var tempWorld = currentWorld;
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currentWorld = previousWorld;
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previousWorld = tempWorld;
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// Draw to texture
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BeginTextureMode(currentWorld);
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BeginShaderMode(shdrGameOfLife);
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DrawTexturePro(previousWorld.Texture, worldRectSource, worldRectDest, new Vector2(0, 0), 0.0f, Color.RayWhite);
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EndShaderMode();
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EndTextureMode();
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}
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//----------------------------------------------------------------------------------
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// Draw to screen
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//----------------------------------------------------------------------------------
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BeginDrawing();
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DrawTexturePro(currentWorld.Texture, textureSourceToScreen, textureOnScreen, new Vector2(0, 0), 0.0f, Color.White);
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DrawLine(windowWidth, 0, windowWidth, screenHeight, new Color(218, 218, 218, 255));
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DrawRectangle(windowWidth, 0, screenWidth - windowWidth, screenHeight, new Color(232, 232, 232, 255));
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DrawText("Conway's", 704, 4, 20, Color.DarkBlue);
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DrawText(" game of", 704, 19, 20, Color.DarkBlue);
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DrawText(" life", 708, 34, 20, Color.DarkBlue);
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DrawText("in raylib", 757, 42, 6, Color.Black);
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DrawText("Presets", 710, 58, 8, Color.Gray);
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preset = -1;
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// Draw GUI controls
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//------------------------------------------------------------------------------
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// NOTE: raygui is not bound in raylib-cs; controls are kept for reference. The
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// simulation still runs automatically and mouse wheel zoom / left-drag pan work.
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/*for (int i = 0; i < numberOfPresets; i++)
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if (GuiButton(new Rectangle( 710.0f, 70.0f + 18*i, 80.0f, 16.0f ), presetPatterns[i].Name)) preset = i;
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GuiToggleGroup(new Rectangle( 710, 258, 80, 16 ), "Run\nPause\nDraw", ref mode);*/
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DrawText($"Zoom: {zoom}x", 710, 316, 8, Color.Gray);
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/*buttonZoomIn = GuiButton(new Rectangle( 710, 328, 80, 16 ), "Zoom in");
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buttonZomOut = GuiButton(new Rectangle( 710, 346, 80, 16 ), "Zoom out");*/
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DrawText($"Speed: {framesPerStep} frame{((framesPerStep > 1) ? "s" : "")}", 710, 370, 8, Color.Gray);
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/*buttonFaster = GuiButton(new Rectangle( 710, 382, 80, 16 ), "Faster");
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buttonSlower = GuiButton(new Rectangle( 710, 400, 80, 16 ), "Slower");*/
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//------------------------------------------------------------------------------
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DrawFPS(712, 426);
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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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UnloadShader(shdrGameOfLife);
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UnloadRenderTexture(world1);
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UnloadRenderTexture(world2);
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FreeImageToDraw();
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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 [shaders] example - game of life");
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SetTargetFPS(60); // Set at 60 frames-per-second
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//--------------------------------------------------------------------------------------
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var game = new GameOfLife();
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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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