+ plugins project

1 files changed, 49 insertions, 0 deletions

diff --git a/Plugins/MonoGame.Extended/source/MonoGame.Extended.Particles/ParticleExtensions.cs b/Plugins/MonoGame.Extended/source/MonoGame.Extended.Particles/ParticleExtensions.cs
new file mode 100644
index 0000000..7566e8d
--- /dev/null
+++ b/Plugins/MonoGame.Extended/source/MonoGame.Extended.Particles/ParticleExtensions.cs
@@ -0,0 +1,49 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using MonoGame.Extended.TextureAtlases;
+
+namespace MonoGame.Extended.Particles
+{
+    public static class ParticleExtensions
+    {
+        public static void Draw(this SpriteBatch spriteBatch, ParticleEffect effect)
+        {
+            for (var i = 0; i < effect.Emitters.Count; i++)
+                UnsafeDraw(spriteBatch, effect.Emitters[i]);
+        }
+
+        public static void Draw(this SpriteBatch spriteBatch, ParticleEmitter emitter)
+        {
+            UnsafeDraw(spriteBatch, emitter);
+        }
+
+        private static unsafe void UnsafeDraw(SpriteBatch spriteBatch, ParticleEmitter emitter)
+        {
+            if(emitter.TextureRegion == null)
+                return;
+
+            var textureRegion = emitter.TextureRegion;
+            var origin = new Vector2(textureRegion.Width/2f, textureRegion.Height/2f);
+            var iterator = emitter.Buffer.Iterator;
+
+            while (iterator.HasNext)
+            {
+                var particle = iterator.Next();
+                var color = particle->Color.ToRgb();
+
+                if (spriteBatch.GraphicsDevice.BlendState == BlendState.AlphaBlend)
+                    color *= particle->Opacity;
+                else
+                    color.A = (byte) (particle->Opacity*255);
+
+                var position = new Vector2(particle->Position.X, particle->Position.Y);
+                var scale = particle->Scale;
+                var particleColor = new Color(color, particle->Opacity);
+                var rotation = particle->Rotation;
+                var layerDepth = particle->LayerDepth;
+
+                spriteBatch.Draw(textureRegion, position, particleColor, rotation, origin, scale, SpriteEffects.None, layerDepth);
+            }
+        }
+    }
+}
\ No newline at end of file