Finalize ParticleSystem, add angular velocity, multiple emitters, GetBool for IDataReader, use Lerp in LerpColor.

TestGame/Resources/fire_effect.toml

@@ -0,0 +1,20 @@
+# Fire effect example
+[ParticleEmitterSettings]
+
+Local = true
+MaxParticles = 128
+EmitRadius = 8
+Explosiveness = 0
+LifeTime = 1.0
+Direction = [0.0, -1.0]
+LinearVelocity = 200
+LinearVelocityDamping = 0.0
+AngularVelocity = 230
+AngularVelocityDamping = 0.0
+AngularVelocityRandom = 1.0
+Gravity = [0.0, 0.0]
+LinearVelocityRandom = 0.5
+ScaleBegin = 0.1
+ScaleEnd = 5.0
+ColorBegin = [255, 162, 0]
+ColorEnd = [64, 64, 64, 0]

TestGame/Resources/test_emitter.toml

@@ -1,14 +0,0 @@
-[ParticleEmitterSettings]
-
-MaxParticles = 1024
-EmitRadius = 128
-Explosiveness = 1.0
-LifeTime = 2.0
-Direction = [0.0, -1.0]
-LinearVelocity = 200
-Gravity = [0.0, 0.0]
-LinearVelocityRandom = 0.5
-ScaleBegin = 1.0
-ScaleEnd = 5.0
-ColorBegin = [255, 0, 0, 0]
-ColorEnd = [0, 255, 0, 255]

TestGame/TestGame.cs

@@ -26,11 +26,6 @@ public class TestGame : Game
 
     protected override void LoadResources()
     {
-        // if (!ResourceManager.TryLoad("my_sound", "sounds/test_sound.ogg", out Sound? _testSound))
-        // {
-
-        // }
-
         if (!ResourceManager.TryLoad("fonts/Inter-Regular.ttf", out _font))
         {
 
@@ -38,7 +33,7 @@ public class TestGame : Game
 
         ResourceManager.TryLoad("icon.png", out _icon);
 
-        if (!ResourceManager.TryLoad("test_emitter.toml", out _emitterSettings))
+        if (!ResourceManager.TryLoad("fire_effect.toml", out _fireEffect))
         {
             throw new Exception("Failed to load emitter settings!");
         }
@@ -46,7 +41,7 @@ public class TestGame : Game
 
     protected override void Ready()
     {
-        _emitterId = _particleSystem.CreateEmitter(Renderer.WindowSize / 2, _emitterSettings);
+        _emitterId = _particleSystem.CreateEmitter(Renderer.WindowSize / 2, _fireEffect);
     }
 
     protected override void Run()
@@ -59,6 +54,16 @@ public class TestGame : Game
                 _particleSystem!.RestartEmitter(_emitterId);
             }
 
+            if (Input.KeyboardKeyJustPressed(KeyboardKey.One))
+            {
+                _particleSystem.CreateEmitter(Input.GetMousePosition(), _fireEffect);
+            }
+
+            if (Input.IsMouseButtonDown(MouseButton.Left))
+            {
+                _particleSystem.SetEmitterPosition(_emitterId, Input.GetMousePosition());
+            }
+
             _particleSimStopwatch = Stopwatch.StartNew();
             _particleSystem!.Update(Renderer.FrameTime);
             _particleSimStopwatch.Stop();
@@ -97,15 +102,15 @@ public class TestGame : Game
         Renderer.BeginBlended(Voile.Rendering.BlendMode.BlendAlpha);
 
         var maxParticles = emitter.Settings.MaxParticles;
+        var particleSize = new Vector2(16.0f, 16.0f);
+        var pivot = particleSize / 2;
 
-        for (int i = maxParticles - 1; i > 0; i--)
+        for (int i = maxParticles - 1; i >= 0; i--)
         {
             var particle = emitter.GetParticle(i);
 
-            var color = new Color(particle.ColorArgb);
-
-            Renderer.SetTransform(emitter.OriginPosition + particle.Position, Vector2.Zero);
-            Renderer.DrawRectangle(Vector2.One * 16.0f * particle.Scale, color);
+            Renderer.SetTransform(particle.Position, pivot, particle.Rotation);
+            Renderer.DrawRectangle(particleSize * particle.Scale, particle.Color);
         }
 
         Renderer.EndBlended();
@@ -116,7 +121,7 @@ public class TestGame : Game
     private Stopwatch _particleSimStopwatch, _renderStopwatch;
     private long _lastRenderTime;
     private int _emitterId;
-    private ResourceRef<ParticleEmitterSettingsResource> _emitterSettings;
+    private ResourceRef<ParticleEmitterSettingsResource> _fireEffect;
     private ResourceRef<Font> _font;
     private ResourceRef<Texture2d> _icon;
     private Logger _logger = new(nameof(TestGame));