Add memory count functions into MapLayer and SpecailLayer.

Also change all memory count functions into const methods.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/resources/map/speciallayer.cpp b/src/resources/map/speciallayer.cpp
index 8700e3931..e53900134 100644
--- a/src/resources/map/speciallayer.cpp
+++ b/src/resources/map/speciallayer.cpp
@@ -148,3 +148,9 @@ void SpecialLayer::draw(Graphics *const graphics, int startX, int startY,
     }
     BLOCK_END("SpecialLayer::draw")
 }
+
+int SpecialLayer::calcMemoryLocal() const
+{
+    return sizeof(SpecialLayer) +
+        sizeof(MapItem) * mWidth * mHeight;
+}