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WASM examples (+ backports of new official examples) (#344)

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* 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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Examples/Shapes/MathSineCosine.cs Normal file
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/*******************************************************************************************
*
* raylib [shapes] example - math sine cosine
*
* Example complexity rating: [★★☆☆] 2/4
*
* Example originally created with raylib 6.0, last time updated with raylib 6.0
*
* Example contributed by Jopestpe (@jopestpe) and reviewed by Ramon Santamaria (@raysan5)
*
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software
*
* Copyright (c) 2025 Jopestpe (@jopestpe)
*
********************************************************************************************/
using static Raylib_cs.Raymath;
namespace Examples.Shapes;
public partial class MathSineCosine : IExample
{
private const int screenWidth = 800;
private const int screenHeight = 450;
// Wave points for sine/cosine visualization
private const int WAVE_POINTS = 36;
public string Name => "Shapes / Math Sine Cosine";
public string Title => "raylib [shapes] example - math sine cosine";
public ConfigFlags ConfigFlags => ConfigFlags.Msaa4xHint;
private Vector2[] sinePoints;
private Vector2[] cosPoints;
private Vector2 center;
private Rectangle start;
private float radius;
private float angle;
private bool pause;
public void Init()
{
sinePoints = new Vector2[WAVE_POINTS];
cosPoints = new Vector2[WAVE_POINTS];
center = new((screenWidth / 2.0f) - 30.0f, screenHeight / 2.0f);
start = new(20.0f, screenHeight - 120.0f, 200.0f, 100.0f);
radius = 130.0f;
angle = 0.0f;
pause = false;
for (int i = 0; i < WAVE_POINTS; i++)
{
float t = i / (float)(WAVE_POINTS - 1);
float currentAngle = t * 360.0f * DEG2RAD;
sinePoints[i] = new(start.X + t * start.Width, start.Y + start.Height / 2.0f - MathF.Sin(currentAngle) * (start.Height / 2.0f));
cosPoints[i] = new(start.X + t * start.Width, start.Y + start.Height / 2.0f - MathF.Cos(currentAngle) * (start.Height / 2.0f));
}
}
public unsafe void Update()
{
// Update
//----------------------------------------------------------------------------------
float angleRad = angle * DEG2RAD;
float cosRad = MathF.Cos(angleRad);
float sinRad = MathF.Sin(angleRad);
Vector2 point = new(center.X + cosRad * radius, center.Y - sinRad * radius);
Vector2 limitMin = new(center.X - radius, center.Y - radius);
Vector2 limitMax = new(center.X + radius, center.Y + radius);
float complementary = 90.0f - angle;
float supplementary = 180.0f - angle;
float explementary = 360.0f - angle;
float tangent = Clamp(MathF.Tan(angleRad), -10.0f, 10.0f);
float cotangent = (MathF.Abs(tangent) > 0.001f) ? Clamp(1.0f / tangent, -radius, radius) : 0.0f;
Vector2 tangentPoint = new(center.X + radius, center.Y - tangent * radius);
Vector2 cotangentPoint = new(center.X + cotangent * radius, center.Y - radius);
angle = Wrap(angle + (!pause ? 1.0f : 0.0f), 0.0f, 360.0f);
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(Color.RayWhite);
// Cotangent (orange)
DrawLineEx(new Vector2(center.X, limitMin.Y), new Vector2(cotangentPoint.X, limitMin.Y), 2.0f, Color.Orange);
DrawLineDashed(center, cotangentPoint, 10, 4, Color.Orange);
// Side background
DrawLine(580, 0, 580, GetScreenHeight(), new Color(218, 218, 218, 255));
DrawRectangle(580, 0, GetScreenWidth(), GetScreenHeight(), new Color(232, 232, 232, 255));
// Base circle and axes
DrawCircleLinesV(center, radius, Color.Gray);
DrawLineEx(new Vector2(center.X, limitMin.Y), new Vector2(center.X, limitMax.Y), 1.0f, Color.Gray);
DrawLineEx(new Vector2(limitMin.X, center.Y), new Vector2(limitMax.X, center.Y), 1.0f, Color.Gray);
// Wave graph axes
DrawLineEx(new Vector2(start.X, start.Y), new Vector2(start.X, start.Y + start.Height), 2.0f, Color.Gray);
DrawLineEx(new Vector2(start.X + start.Width, start.Y), new Vector2(start.X + start.Width, start.Y + start.Height), 2.0f, Color.Gray);
DrawLineEx(new Vector2(start.X, start.Y + start.Height / 2), new Vector2(start.X + start.Width, start.Y + start.Height / 2), 2.0f, Color.Gray);
// Wave graph axis labels
DrawText("1", (int)start.X - 8, (int)start.Y, 6, Color.Gray);
DrawText("0", (int)start.X - 8, (int)start.Y + (int)start.Height / 2 - 6, 6, Color.Gray);
DrawText("-1", (int)start.X - 12, (int)start.Y + (int)start.Height - 8, 6, Color.Gray);
DrawText("0", (int)start.X - 2, (int)start.Y + (int)start.Height + 4, 6, Color.Gray);
DrawText("360", (int)start.X + (int)start.Width - 8, (int)start.Y + (int)start.Height + 4, 6, Color.Gray);
// Sine (red - vertical)
DrawLineEx(new Vector2(center.X, center.Y), new Vector2(center.X, point.Y), 2.0f, Color.Red);
DrawLineDashed(new Vector2(point.X, center.Y), new Vector2(point.X, point.Y), 10, 4, Color.Red);
DrawText($"Sine {sinRad:0.00}", 640, 190, 6, Color.Red);
DrawCircleV(new Vector2(start.X + (angle / 360.0f) * start.Width, start.Y + ((-sinRad + 1) * start.Height / 2.0f)), 4.0f, Color.Red);
fixed (Vector2* p = sinePoints)
{
DrawSplineLinear(p, WAVE_POINTS, 1.0f, Color.Red);
}
// Cosine (blue - horizontal)
DrawLineEx(new Vector2(center.X, center.Y), new Vector2(point.X, center.Y), 2.0f, Color.Blue);
DrawLineDashed(new Vector2(center.X, point.Y), new Vector2(point.X, point.Y), 10, 4, Color.Blue);
DrawText($"Cosine {cosRad:0.00}", 640, 210, 6, Color.Blue);
DrawCircleV(new Vector2(start.X + (angle / 360.0f) * start.Width, start.Y + ((-cosRad + 1) * start.Height / 2.0f)), 4.0f, Color.Blue);
fixed (Vector2* p = cosPoints)
{
DrawSplineLinear(p, WAVE_POINTS, 1.0f, Color.Blue);
}
// Tangent (purple)
DrawLineEx(new Vector2(limitMax.X, center.Y), new Vector2(limitMax.X, tangentPoint.Y), 2.0f, Color.Purple);
DrawLineDashed(center, tangentPoint, 10, 4, Color.Purple);
DrawText($"Tangent {tangent:0.00}", 640, 230, 6, Color.Purple);
// Cotangent (orange)
DrawText($"Cotangent {cotangent:0.00}", 640, 250, 6, Color.Orange);
// Complementary angle (beige)
DrawCircleSectorLines(center, radius * 0.6f, -angle, -90.0f, 36, Color.Beige);
DrawText($"Complementary {complementary:0}°", 640, 150, 6, Color.Beige);
// Supplementary angle (darkblue)
DrawCircleSectorLines(center, radius * 0.5f, -angle, -180.0f, 36, Color.DarkBlue);
DrawText($"Supplementary {supplementary:0}°", 640, 130, 6, Color.DarkBlue);
// Explementary angle (pink)
DrawCircleSectorLines(center, radius * 0.4f, -angle, -360.0f, 36, Color.Pink);
DrawText($"Explementary {explementary:0}°", 640, 170, 6, Color.Pink);
// Current angle - arc (lime), radius (black), endpoint (black)
DrawCircleSectorLines(center, radius * 0.7f, -angle, 0.0f, 36, Color.Lime);
DrawLineEx(new Vector2(center.X, center.Y), point, 2.0f, Color.Black);
DrawCircleV(point, 4.0f, Color.Black);
// Draw GUI controls
// NOTE: raygui is not bound in raylib-cs, so the Pause toggle and Angle slider
// are unavailable; the angle animates continuously.
//------------------------------------------------------------------------------
/*
GuiSetStyle(LABEL, TEXT_COLOR_NORMAL, ColorToInt(GRAY));
GuiToggle((Rectangle){ 640, 70, 120, 20}, TextFormat("Pause"), &pause);
GuiSetStyle(LABEL, TEXT_COLOR_NORMAL, ColorToInt(LIME));
GuiSliderBar((Rectangle){ 640, 40, 120, 20}, "Angle", TextFormat("%.0f°", angle), &angle, 0.0f, 360.0f);
// Angle values panel
GuiGroupBox((Rectangle){ 620, 110, 140, 170}, "Angle Values");
*/
//------------------------------------------------------------------------------
DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
public void Unload()
{
}
public static int Main()
{
// Initialization
//--------------------------------------------------------------------------------------
SetConfigFlags(ConfigFlags.Msaa4xHint);
InitWindow(screenWidth, screenHeight, "raylib [shapes] example - math sine cosine");
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
var game = new MathSineCosine();
game.Init();
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
game.Update();
}
game.Unload();
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
}