From 9cecf8e8ab30cb46932d5179891e83fc0dee372b Mon Sep 17 00:00:00 2001
From: alzeih <alzeih@gmail.com>
Date: Sat, 27 Feb 2010 14:51:03 +1300
Subject: [PATCH] Basic ScreenShaker

---
 OpenRa.Game/OpenRa.Game.csproj           |  3 +-
 OpenRa.Game/Traits/World/ScreenShaker.cs | 38 ++++++++++++++++++++++++
 mods/ra/rules.yaml                       |  1 +
 3 files changed, 41 insertions(+), 1 deletion(-)
 create mode 100644 OpenRa.Game/Traits/World/ScreenShaker.cs

diff --git a/OpenRa.Game/OpenRa.Game.csproj b/OpenRa.Game/OpenRa.Game.csproj
index ae74c3a932..9fa69e1eff 100644
--- a/OpenRa.Game/OpenRa.Game.csproj
+++ b/OpenRa.Game/OpenRa.Game.csproj
@@ -267,6 +267,7 @@
     <Compile Include="Traits\Wall.cs" />
     <Compile Include="Traits\Render\RenderBuildingWall.cs" />
     <Compile Include="Traits\Player\EvaAlerts.cs" />
+    <Compile Include="Traits\World\ScreenShaker.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenRa.FileFormats\OpenRa.FileFormats.csproj">
@@ -302,4 +303,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
\ No newline at end of file
+</Project>
diff --git a/OpenRa.Game/Traits/World/ScreenShaker.cs b/OpenRa.Game/Traits/World/ScreenShaker.cs
new file mode 100644
index 0000000000..485197d732
--- /dev/null
+++ b/OpenRa.Game/Traits/World/ScreenShaker.cs
@@ -0,0 +1,38 @@
+
+using System;
+using OpenRa.Traits;
+
+namespace OpenRa.Traits
+{
+	class ScreenShakerInfo : ITraitInfo
+	{
+		public object Create( Actor self ) { return new ScreenShaker( self ); }
+	}
+	
+	public class ScreenShaker : ITick
+	{
+		int ticks = 0;
+		
+		public ScreenShaker (Actor self){}
+		
+		public void Tick (Actor self)
+		{
+			Game.viewport.Scroll(getScrollOffset());
+			ticks++;
+		}
+		
+		//public void registerShakeEffect(float2 position, int time)
+		//{
+		//}
+		
+		public float2 getScrollOffset()
+		{
+			int xFreq = 4;
+			int yFreq = 5;
+			int intensity = 3;
+			
+			return intensity * new float2( (float) Math.Sin((ticks*2*Math.PI)/xFreq) , (float) Math.Cos((ticks*2*Math.PI)/yFreq));
+		}
+		
+	}
+}
diff --git a/mods/ra/rules.yaml b/mods/ra/rules.yaml
index 451f38acf4..545e69383f 100644
--- a/mods/ra/rules.yaml
+++ b/mods/ra/rules.yaml
@@ -61,6 +61,7 @@ Player:
 	SpawnDefaultUnits:
 
 World:
+	ScreenShaker:
 	WaterPaletteRotation:
 	ChronoshiftPaletteEffect:
 	LightPaletteRotator: