feat: backporting existing raylib-cs examples and new official raylib examples to WASM, adopting raylib's original code style
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tiger tiger tiger
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6aa91e3097
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234 changed files with 38997 additions and 10578 deletions
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@ -13,31 +13,37 @@
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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.Core;
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public class Camera2dDemo
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public partial class Camera2dDemo : IExample
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{
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public const int MaxBuildings = 100;
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public static int Main()
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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 2D Demo";
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public string Title => "raylib [core] example - 2d camera";
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private Rectangle player;
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private Rectangle[] buildings;
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private Color[] buildColors;
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private Camera2D camera;
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public void Init()
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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const int screenWidth = 800;
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const int screenHeight = 450;
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player = new(400, 280, 40, 40);
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buildings = new Rectangle[MaxBuildings];
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buildColors = new Color[MaxBuildings];
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InitWindow(screenWidth, screenHeight, "raylib [core] example - 2d camera");
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var spacing = 0;
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Rectangle player = new(400, 280, 40, 40);
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Rectangle[] buildings = new Rectangle[MaxBuildings];
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Color[] buildColors = new Color[MaxBuildings];
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int spacing = 0;
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for (int i = 0; i < MaxBuildings; i++)
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for (var i = 0; i < MaxBuildings; i++)
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{
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buildings[i].Width = GetRandomValue(50, 200);
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buildings[i].Height = GetRandomValue(100, 800);
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@ -54,124 +60,139 @@ public class Camera2dDemo
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);
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}
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Camera2D camera = new();
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camera = new();
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camera.Target = new Vector2(player.X + 20, player.Y + 20);
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camera.Offset = new Vector2(screenWidth / 2, screenHeight / 2);
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camera.Offset = new Vector2(screenWidth / 2.0f, screenHeight / 2.0f);
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camera.Rotation = 0.0f;
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camera.Zoom = 1.0f;
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}
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SetTargetFPS(60);
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public void Update()
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{
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// Update
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//----------------------------------------------------------------------------------
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// Player movement
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if (IsKeyDown(KeyboardKey.Right))
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{
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player.X += 2;
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}
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else if (IsKeyDown(KeyboardKey.Left))
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{
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player.X -= 2;
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}
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// Camera target follows player
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camera.Target = new Vector2(player.X + 20, player.Y + 20);
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// Camera rotation controls
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if (IsKeyDown(KeyboardKey.A))
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{
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camera.Rotation--;
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}
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else if (IsKeyDown(KeyboardKey.S))
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{
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camera.Rotation++;
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}
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// Limit camera rotation to 80 degrees (-40 to 40)
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if (camera.Rotation > 40)
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{
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camera.Rotation = 40;
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}
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else if (camera.Rotation < -40)
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{
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camera.Rotation = -40;
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}
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// Camera zoom controls
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// Uses log scaling to provide consistent zoom speed
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camera.Zoom = MathF.Exp(MathF.Log(camera.Zoom) + ((float)GetMouseWheelMove() * 0.1f));
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if (camera.Zoom > 3.0f)
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{
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camera.Zoom = 3.0f;
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}
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else if (camera.Zoom < 0.1f)
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{
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camera.Zoom = 0.1f;
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}
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// Camera reset (zoom and rotation)
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if (IsKeyPressed(KeyboardKey.R))
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{
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camera.Zoom = 1.0f;
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camera.Rotation = 0.0f;
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}
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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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BeginMode2D(camera);
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DrawRectangle(-6000, 320, 13000, 8000, Color.DarkGray);
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for (var i = 0; i < MaxBuildings; i++)
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{
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DrawRectangleRec(buildings[i], buildColors[i]);
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}
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DrawRectangleRec(player, Color.Red);
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DrawLine((int)camera.Target.X, -screenHeight * 10, (int)camera.Target.X, screenHeight * 10, Color.Green);
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DrawLine(-screenWidth * 10, (int)camera.Target.Y, screenWidth * 10, (int)camera.Target.Y, Color.Green);
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EndMode2D();
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DrawText("SCREEN AREA", 640, 10, 20, Color.Red);
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DrawRectangle(0, 0, screenWidth, 5, Color.Red);
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DrawRectangle(0, 5, 5, screenHeight - 10, Color.Red);
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DrawRectangle(screenWidth - 5, 5, 5, screenHeight - 10, Color.Red);
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DrawRectangle(0, screenHeight - 5, screenWidth, 5, Color.Red);
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DrawRectangle(10, 10, 250, 113, Fade(Color.SkyBlue, 0.5f));
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DrawRectangleLines(10, 10, 250, 113, Color.Blue);
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DrawText("Free 2D camera controls:", 20, 20, 10, Color.Black);
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DrawText("- Right/Left to move player", 40, 40, 10, Color.DarkGray);
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DrawText("- Mouse Wheel to Zoom in-out", 40, 60, 10, Color.DarkGray);
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DrawText("- A / S to Rotate", 40, 80, 10, Color.DarkGray);
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DrawText("- R to reset Zoom and Rotation", 40, 100, 10, 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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}
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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 - 2d camera");
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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 Camera2dDemo();
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game.Init();
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// Main game loop
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while (!WindowShouldClose())
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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// Update
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//----------------------------------------------------------------------------------
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// Player movement
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if (IsKeyDown(KeyboardKey.Right))
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{
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player.X += 2;
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}
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else if (IsKeyDown(KeyboardKey.Left))
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{
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player.X -= 2;
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}
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// Camera3D target follows player
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camera.Target = new Vector2(player.X + 20, player.Y + 20);
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// Camera3D rotation controls
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if (IsKeyDown(KeyboardKey.A))
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{
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camera.Rotation--;
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}
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else if (IsKeyDown(KeyboardKey.S))
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{
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camera.Rotation++;
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}
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// Limit camera rotation to 80 degrees (-40 to 40)
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if (camera.Rotation > 40)
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{
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camera.Rotation = 40;
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}
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else if (camera.Rotation < -40)
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{
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camera.Rotation = -40;
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}
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// Camera3D zoom controls
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camera.Zoom += ((float)GetMouseWheelMove() * 0.05f);
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if (camera.Zoom > 3.0f)
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{
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camera.Zoom = 3.0f;
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}
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else if (camera.Zoom < 0.1f)
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{
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camera.Zoom = 0.1f;
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}
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// Camera3D reset (zoom and rotation)
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if (IsKeyPressed(KeyboardKey.R))
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{
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camera.Zoom = 1.0f;
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camera.Rotation = 0.0f;
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}
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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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BeginMode2D(camera);
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DrawRectangle(-6000, 320, 13000, 8000, Color.DarkGray);
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for (int i = 0; i < MaxBuildings; i++)
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{
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DrawRectangleRec(buildings[i], buildColors[i]);
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}
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DrawRectangleRec(player, Color.Red);
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DrawRectangle((int)camera.Target.X, -500, 1, (int)(screenHeight * 4), Color.Green);
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DrawLine(
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(int)(-screenWidth * 10),
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(int)camera.Target.Y,
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(int)(screenWidth * 10),
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(int)camera.Target.Y,
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Color.Green
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);
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EndMode2D();
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DrawText("SCREEN AREA", 640, 10, 20, Color.Red);
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DrawRectangle(0, 0, (int)screenWidth, 5, Color.Red);
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DrawRectangle(0, 5, 5, (int)screenHeight - 10, Color.Red);
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DrawRectangle((int)screenWidth - 5, 5, 5, (int)screenHeight - 10, Color.Red);
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DrawRectangle(0, (int)screenHeight - 5, (int)screenWidth, 5, Color.Red);
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DrawRectangle(10, 10, 250, 113, ColorAlpha(Color.SkyBlue, 0.5f));
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DrawRectangleLines(10, 10, 250, 113, Color.Blue);
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DrawText("Free 2d camera controls:", 20, 20, 10, Color.Black);
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DrawText("- Right/Left to move Offset", 40, 40, 10, Color.DarkGray);
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DrawText("- Mouse Wheel to Zoom in-out", 40, 60, 10, Color.DarkGray);
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DrawText("- A / S to Rotate", 40, 80, 10, Color.DarkGray);
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DrawText("- R to reset Zoom and Rotation", 40, 100, 10, Color.DarkGray);
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EndDrawing();
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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();
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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