WASM examples (+ backports of new official examples) (#344)
* chg: New build system that uses the officially distributed binaries, bumped version to 8.0.0, simplified git workflow, removed deprecated OpenGL 1.1 functionality. * chg: Modernize CI workflow, enable SourceLink - Bump workflow actions to latest majors (Node 24); drop deprecated softprops/action-gh-release@v1 - Trigger push builds on main instead of master - Create local nuget feed dir before pack (fixes NU1301) - Enable Microsoft.SourceLink.GitHub for debugging symbols (ref PR #340) * fix: centralized version data in Directory.build.props, and fixed various interop details that had incorrect function signatures * chore: updated readme * fix: version the native extract marker and chain download via DependsOnTargets The .extracted marker now includes the raylib package name, so bumping TargetRaylibTag re-extracts the new archive instead of silently keeping (and packing/copying) the previous version's files. _PrepareNativeLibrary and _StageWasmNative now depend directly on _DownloadAndExtractInternal instead of CallTarget-ing it; dependency targets run in the same project instance, so the resolved properties (RaylibPackageName etc.) propagate naturally. * fix: let the binding build for browser-wasm on both net8.0 and net10.0 The net8-era wasm workload (Microsoft.NET.Runtime.WebAssembly.Sdk 8.0.x, auto-imported for RID browser-wasm) treats every browser-wasm project as a wasm app: it forces OutputType=Exe after project evaluation (CS5001 for a classlib) and hooks its app-bundle build after Build, which errors because a library has no assemblies to bundle. Opt Raylib-cs out via DisableAutoWasmBuildApp (props time, before the workload defaults its trigger) and pin OutputType back to Library in Directory.Build.targets (evaluated after the workload props, so the assignment wins). net10's wasm SDK needs neither workaround. * chore: readme updated * chg: simplifying build logic - a simple line in the documentation should save us the code here * fix: Wrong signature of FrameBufferComplete * chore: readme update * feat: samples default to local project reference, and can optionally use the nuget package * feat: backporting existing raylib-cs examples and new official raylib examples to WASM, adopting raylib's original code style * chore: readme, gitignore, and targets backport. * fix: Examples.csproj runs the download task when building locally * feat: backporting existing raylib-cs examples and new official raylib examples to WASM, adopting raylib's original code style * chore: readme, gitignore, and targets backport. * chore: clean up linter warnings * feat: html harness focuses the example and allows quick navigation with J/K instead. * chore: readme mentions the property to use nuget vs. the local project reference * feat: replaced the J/K navigation with good old HTML buttons * chore: run dotnet format scoped default (was previously scoped to just 'style')
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175
Examples/Shapes/VectorAngle.cs
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175
Examples/Shapes/VectorAngle.cs
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/*******************************************************************************************
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*
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* raylib [shapes] example - vector angle
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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 1.0, last time updated with raylib 5.0
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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) 2023-2025 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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using static Raylib_cs.Raymath; // Required for: Vector2LineAngle()
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namespace Examples.Shapes;
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public partial class VectorAngle : 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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public string Name => "Shapes / Vector Angle";
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public string Title => "raylib [shapes] example - vector angle";
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private Vector2 v0;
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private Vector2 v1;
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private Vector2 v2; // Updated with mouse position
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private float angle; // Angle in degrees
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private int angleMode; // 0-Vector2Angle(), 1-Vector2LineAngle()
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public void Init()
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{
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v0 = new(screenWidth / 2.0f, screenHeight / 2.0f);
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v1 = Vector2Add(v0, new Vector2(100.0f, 80.0f));
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v2 = new(0, 0); // Updated with mouse position
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angle = 0.0f; // Angle in degrees
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angleMode = 0; // 0-Vector2Angle(), 1-Vector2LineAngle()
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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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float startangle = 0.0f;
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if (angleMode == 0)
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{
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startangle = -Vector2LineAngle(v0, v1) * RAD2DEG;
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}
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if (angleMode == 1)
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{
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startangle = 0.0f;
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}
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v2 = GetMousePosition();
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if (IsKeyPressed(KeyboardKey.Space))
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{
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angleMode = (angleMode == 0) ? 1 : 0;
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}
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if ((angleMode == 0) && IsMouseButtonDown(MouseButton.Right))
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{
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v1 = GetMousePosition();
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}
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if (angleMode == 0)
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{
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// Calculate angle between two vectors, considering a common origin (v0)
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Vector2 v1Normal = Vector2Normalize(Vector2Subtract(v1, v0));
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Vector2 v2Normal = Vector2Normalize(Vector2Subtract(v2, v0));
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angle = Vector2Angle(v1Normal, v2Normal) * RAD2DEG;
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}
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else if (angleMode == 1)
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{
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// Calculate angle defined by a two vectors line, in reference to horizontal line
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angle = Vector2LineAngle(v0, v2) * RAD2DEG;
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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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if (angleMode == 0)
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{
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DrawText("MODE 0: Angle between V1 and V2", 10, 10, 20, Color.Black);
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DrawText("Right Click to Move V2", 10, 30, 20, Color.DarkGray);
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DrawLineEx(v0, v1, 2.0f, Color.Black);
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DrawLineEx(v0, v2, 2.0f, Color.Red);
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DrawCircleSector(v0, 40.0f, startangle, startangle + angle, 32, Fade(Color.Green, 0.6f));
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}
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else if (angleMode == 1)
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{
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DrawText("MODE 1: Angle formed by line V1 to V2", 10, 10, 20, Color.Black);
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DrawLine(0, screenHeight / 2, screenWidth, screenHeight / 2, Color.LightGray);
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DrawLineEx(v0, v2, 2.0f, Color.Red);
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DrawCircleSector(v0, 40.0f, startangle, startangle - angle, 32, Fade(Color.Green, 0.6f));
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}
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DrawText("v0", (int)v0.X, (int)v0.Y, 10, Color.DarkGray);
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// If the line from v0 to v1 would overlap the text, move it's position up 10
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if (angleMode == 0 && Vector2Subtract(v0, v1).Y > 0.0f)
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{
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DrawText("v1", (int)v1.X, (int)v1.Y - 10, 10, Color.DarkGray);
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}
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if (angleMode == 0 && Vector2Subtract(v0, v1).Y < 0.0f)
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{
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DrawText("v1", (int)v1.X, (int)v1.Y, 10, Color.DarkGray);
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}
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// If angle mode 1, use v1 to emphasize the horizontal line
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if (angleMode == 1)
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{
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DrawText("v1", (int)v0.X + 40, (int)v0.Y, 10, Color.DarkGray);
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}
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// position adjusted by -10 so it isn't hidden by cursor
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DrawText("v2", (int)v2.X - 10, (int)v2.Y - 10, 10, Color.DarkGray);
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DrawText("Press SPACE to change MODE", 460, 10, 20, Color.DarkGray);
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DrawText($"ANGLE: {angle:F2}", 10, 70, 20, Color.Lime);
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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 [shapes] example - vector angle");
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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 VectorAngle();
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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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