+ plugins project

1 files changed, 23 insertions, 0 deletions

diff --git a/Plugins/MonoGame.Extended/source/MonoGame.Extended.Particles/Modifiers/LinearGravityModifier.cs b/Plugins/MonoGame.Extended/source/MonoGame.Extended.Particles/Modifiers/LinearGravityModifier.cs
new file mode 100644
index 0000000..e9ed216
--- /dev/null
+++ b/Plugins/MonoGame.Extended/source/MonoGame.Extended.Particles/Modifiers/LinearGravityModifier.cs
@@ -0,0 +1,23 @@
+using Microsoft.Xna.Framework;
+
+namespace MonoGame.Extended.Particles.Modifiers
+{
+    public class LinearGravityModifier : Modifier
+    {
+        public Vector2 Direction { get; set; }
+        public float Strength { get; set; }
+
+        public override unsafe void Update(float elapsedSeconds, ParticleBuffer.ParticleIterator iterator)
+        {
+            var vector = Direction*(Strength*elapsedSeconds);
+
+            while (iterator.HasNext)
+            {
+                var particle = iterator.Next();
+                particle->Velocity = new Vector2(
+                    particle->Velocity.X + vector.X*particle->Mass,
+                    particle->Velocity.Y + vector.Y*particle->Mass);
+            }
+        }
+    }
+}
\ No newline at end of file