Removed 'virtual' from methods of Image

Maybe it used to be necessary for these methods to be virtual, but this
is no longer the case. Hence we can avoid wasting CPU ticks searching
through virtual function tables, especially for frequently used methods
like getWidth, getHeight and setAlpha.

MapLayer::getTile was inlined.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/map.h b/src/map.h
index 6fe2b556..086ff4cc 100644
--- a/src/map.h
+++ b/src/map.h
@@ -108,7 +108,8 @@ class MapLayer
         /**
          * Get tile image, with x and y in layer coordinates.
          */
-        Image *getTile(int x, int y) const;
+        Image *getTile(int x, int y) const
+        { return mTiles[x + y * mWidth]; }
 
         /**
          * Draws this layer to the given graphics context. The coordinates are