Blinky lights

OpenRa.Game/Game.cs

@@ -79,6 +79,7 @@ namespace OpenRa.Game
 
 			var worldActor = new Actor(null, new int2(int.MaxValue, int.MaxValue), null);
 			worldActor.traits.Add(new Traits.WaterPaletteRotation(worldActor));
+			worldActor.traits.Add(new Traits.LightPaletteRotator(worldActor));
 			worldActor.traits.Add(new Traits.ChronoshiftPaletteEffect(worldActor));
 			Game.world.Add(worldActor);
 

OpenRa.Game/OpenRa.Game.csproj

@@ -234,6 +234,7 @@
     <Compile Include="Traits\ConstructionYard.cs" />
     <Compile Include="Traits\IronCurtain.cs" />
     <Compile Include="Traits\IronCurtainable.cs" />
+    <Compile Include="Traits\LightPaletteRotator.cs" />
     <Compile Include="Traits\MineImmune.cs" />
     <Compile Include="Traits\Minelayer.cs" />
     <Compile Include="Traits\LimitedAmmo.cs" />

OpenRa.Game/Traits/LightPaletteRotator.cs

@@ -0,0 +1,26 @@
+using System.Drawing;
+
+namespace OpenRa.Game.Traits
+{
+	class LightPaletteRotator : ITick, IPaletteModifier
+	{
+		public LightPaletteRotator(Actor self) { }
+
+		float t = 0;
+		public void Tick(Actor self)
+		{
+			t += .5f;
+		}
+
+		public void AdjustPalette(Bitmap b)
+		{
+			var rotate = (int)t % 18;
+			if (rotate > 9)
+				rotate = 18 - rotate;
+			
+			using (var bitmapCopy = new Bitmap(b))
+				for (int j = 0; j < 16; j++)
+					b.SetPixel(0x67, j, b.GetPixel(230+rotate, j));
+		}
+	}
+}