140 lines
5.2 KiB
C#
140 lines
5.2 KiB
C#
/*******************************************************************************************
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*
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* raylib [textures] example - sprite stacking
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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 6.0, last time updated with raylib 6.0
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*
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* Example contributed by Robin (@RobinsAviary) 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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* Redbooth model (c) 2017-2025 @kluchek under https://creativecommons.org/licenses/by/4.0/ https://github.com/kluchek/vox-models/
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* Copyright (c) 2025 Robin (@RobinsAviary)
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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.Textures;
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public partial class SpriteStacking : 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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private const float speedChange = 0.25f; // Amount speed will change by when the user presses A/D
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public string Name => "Textures / Sprite Stacking";
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public string Title => "raylib [textures] example - sprite stacking";
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private Texture2D booth;
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private float stackScale; // Overall scale of the stacked sprite
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private float stackSpacing; // Vertical spacing between each layer
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private uint stackCount; // Number of layers, used for calculating the size of a single slice
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private float rotationSpeed; // Stacked sprites rotation speed
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private float rotation; // Current rotation of the stacked sprite
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public void Init()
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{
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booth = LoadTexture("resources/booth.png");
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stackScale = 3.0f;
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stackSpacing = 2.0f;
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stackCount = 122;
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rotationSpeed = 30.0f;
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rotation = 0.0f;
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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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// Use mouse wheel to affect stack separation
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stackSpacing += GetMouseWheelMove() * 0.1f;
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stackSpacing = Math.Clamp(stackSpacing, 0.0f, 5.0f);
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// Add a positive/negative offset to spin right/left at different speeds
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if (IsKeyDown(KeyboardKey.Left) || IsKeyDown(KeyboardKey.A))
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{
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rotationSpeed -= speedChange;
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}
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if (IsKeyDown(KeyboardKey.Right) || IsKeyDown(KeyboardKey.D))
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{
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rotationSpeed += speedChange;
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}
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rotation += rotationSpeed * GetFrameTime();
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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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// Get the size of a single slice
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var frameWidth = (float)booth.Width;
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var frameHeight = (float)booth.Height / (float)stackCount;
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// Get the scaled resolution to draw at
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var scaledWidth = frameWidth * stackScale;
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var scaledHeight = frameHeight * stackScale;
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// Draw the stacked sprite, rotated to the correct angle, with an vertical offset applied based on its y location
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for (var i = (int)stackCount - 1; i >= 0; i--)
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{
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// Center vertically
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Rectangle source = new(0.0f, (float)i * frameHeight, frameWidth, frameHeight);
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Rectangle dest = new(screenWidth / 2.0f, (screenHeight / 2.0f) + (i * stackSpacing) - (stackSpacing * stackCount / 2.0f), scaledWidth, scaledHeight);
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Vector2 origin = new(scaledWidth / 2.0f, scaledHeight / 2.0f);
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DrawTexturePro(booth, source, dest, origin, rotation, Color.White);
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}
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DrawText("A/D to spin\nmouse wheel to change separation (aka 'angle')", 10, 10, 20, Color.DarkGray);
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DrawText($"current spacing: {stackSpacing:F1}", 10, 50, 20, Color.DarkGray);
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DrawText($"current speed: {rotationSpeed:F2}", 10, 70, 20, Color.DarkGray);
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DrawText("redbooth model (c) kluchek under cc 4.0", 10, 420, 20, Color.DarkGray);
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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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UnloadTexture(booth);
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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 [textures] example - sprite stacking");
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SetTargetFPS(60);
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//--------------------------------------------------------------------------------------
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var game = new SpriteStacking();
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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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