Improve high bridge shadows

Author: Rampastring

src/TSMapEditor/Rendering/ObjectRenderers/ObjectRenderer.cs

@@ -289,7 +289,7 @@ public virtual void DrawShadow(T gameObject)
 
             float textureHeight = (regularFrame != null && regularFrame.Texture != null) ? (float)regularFrame.Texture.Height : shadowFrame.Texture.Height;
 
-            float depth = GetDepthFromPosition(gameObject, drawingBounds);
+            float depth = GetShadowDepthFromPosition(gameObject, drawingBounds);
             // depth += GetDepthAddition(gameObject);
             depth += textureHeight / Map.HeightInPixelsWithCellHeight;
 
@@ -330,6 +330,8 @@ protected virtual float GetDepthFromPosition(T gameObject, Rectangle drawingBoun
                 (height * Constants.DepthRenderStep);
         }
 
+        protected virtual float GetShadowDepthFromPosition(T gameObject, Rectangle drawingBounds) => GetDepthFromPosition(gameObject, drawingBounds);
+
         protected MapTile GetSouthernmostCell(T gameObject)
         {
             MapTile tile = null;

src/TSMapEditor/Rendering/ObjectRenderers/OverlayRenderer.cs

@@ -94,6 +94,17 @@ protected override float GetDepthAddition(Overlay gameObject)
             return (Constants.DepthEpsilon * ObjectDepthAdjustments.Overlay) + ((tile.Level + bridgeHeight) * Constants.CellHeight / (float)Map.HeightInPixelsWithCellHeight);
         }
 
+        protected override float GetShadowDepthFromPosition(Overlay gameObject, Rectangle drawingBounds)
+        {
+            // Hack to prevent high bridge shadows from overlapping terrain on higher ground on bridge ends
+            if (gameObject.OverlayType.HighBridgeDirection != BridgeDirection.None)
+            {
+                return base.GetShadowDepthFromPosition(gameObject, new Rectangle(drawingBounds.X, drawingBounds.Y - (Constants.CellSizeY * 4), drawingBounds.Width, drawingBounds.Height));
+            }
+
+            return base.GetShadowDepthFromPosition(gameObject, drawingBounds);
+        }
+
         protected override void Render(Overlay gameObject, Point2D drawPoint, in CommonDrawParams drawParams)
         {
             Color remapColor = Color.White;