Add smooth minimap to world movement

OpenRA.Game/Graphics/Viewport.cs

@@ -250,7 +250,7 @@ namespace OpenRA.Graphics
 
 		public CPos ViewToWorld(int2 view)
 		{
-			var world = worldRenderer.Viewport.ViewToWorldPx(view);
+			var world = ViewToWorldPx(view);
 			var map = worldRenderer.World.Map;
 			var candidates = CandidateMouseoverCells(world).ToList();
 
@@ -337,6 +337,13 @@ namespace OpenRA.Graphics
 			allCellsDirty = true;
 		}
 
+		public void Center(float2 pos)
+		{
+			CenterLocation = worldRenderer.ScreenPosition(pos).Clamp(mapBounds);
+			cellsDirty = true;
+			allCellsDirty = true;
+		}
+
 		public void Scroll(float2 delta, bool ignoreBorders)
 		{
 			// Convert scroll delta from world-px to viewport-px

OpenRA.Game/Graphics/WorldRenderer.cs

@@ -384,12 +384,22 @@ namespace OpenRA.Graphics
 			Game.Renderer.SetPalette(palette);
 		}
 
-		// Conversion between world and screen coordinates
+		/// <summary>
+		/// Converts a world position to a screen position.
+		/// </summary>
 		public float2 ScreenPosition(WPos pos)
 		{
 			return new float2((float)TileSize.Width * pos.X / TileScale, (float)TileSize.Height * (pos.Y - pos.Z) / TileScale);
 		}
 
+		/// <summary>
+		/// Converts a world position to a screen position.
+		/// </summary>
+		public float2 ScreenPosition(float2 pos)
+		{
+			return new float2(TileSize.Width * pos.X / TileScale, TileSize.Height * pos.Y / TileScale);
+		}
+
 		public float3 Screen3DPosition(WPos pos)
 		{
 			// The projection from world coordinates to screen coordinates has