Supports mouse_opacity=2 (OpenDreamProject#2493)

Author: Ruzihm

OpenDreamClient/Rendering/DreamPlane.cs

@@ -96,6 +96,12 @@ public void DrawMouseMap(DrawingHandleWorld handle, DreamViewOverlay overlay, Ve
             if (texture == null)
                 continue;
 
+            // For mouse_opacity = 2, discard transparency but keep the size.
+            var textureSize = texture.Size;
+            if (sprite.MouseOpacity == MouseOpacity.Opaque) {
+                texture = Texture.White;
+            }
+
             var pos = (sprite.Position - worldAABB.BottomLeft) * overlay.IconSize;
             if (sprite.MainIcon != null)
                 pos += sprite.MainIcon.TextureRenderOffset;
@@ -106,8 +112,8 @@ public void DrawMouseMap(DrawingHandleWorld handle, DreamViewOverlay overlay, Ve
             var colorB = (byte)((hash >> 16) & 0xFF);
             Color targetColor = new Color(colorR, colorG, colorB); //TODO - this could result in mis-clicks due to hash-collision since we ditch a whole byte.
             overlay.MouseMapLookup[targetColor] = sprite;
-            handle.SetTransform(DreamViewOverlay.CalculateDrawingMatrix(sprite.TransformToApply, pos, texture.Size, renderTargetSize));
-            handle.DrawTextureRect(texture, new Box2(Vector2.Zero, texture.Size), targetColor);
+            handle.SetTransform(DreamViewOverlay.CalculateDrawingMatrix(sprite.TransformToApply, pos, textureSize, renderTargetSize));
+            handle.DrawTextureRect(texture, new Box2(Vector2.Zero, textureSize), targetColor);
         }
     }
 }