Fixed the glitch which would occur on some maps...

...in the top right corner and bottom left corner, these tiles were
rendered as void instead of a normal terrain.

changelog

@@ -47,6 +47,9 @@ Version 1.3.6+svn:
      incorrect scale update when zooming.
    * improve footsteps : better beginning, angles and end, reduce
      cpu cost, fix incorrect left-right sequences and clean some images
+   * fixed the glitch which would occur on some maps in the top right
+     corner and bottom left corner, these tiles were rendered as void
+     instead of a normal terrain.
  * map editor:
    * the grid is scaled properly again and no longer shown in the offmap area
  * user interface:

players_changelog

@@ -11,6 +11,7 @@ Version 1.3.6+svn:
       * Fixed bug in Anita's death event where Tallin speaks instead of her.
       * Fixed bug in 'Old Friend' where Rakshas' portrait doesn't appear.
       * Balancing and text changes in 'Old Friend'
+
   * Multiplayer
     * New map: Mokena Prairie.
     * Revised maps: Hamlets, Meteor Lake, 4p Hamlets.
@@ -34,6 +35,7 @@ Version 1.3.6+svn:
       end-of-turn ends the linger and takes you out.
     * The 'more' and 'help' button in the title screen now have a tooltip.
     * Added a hotkey for clearing the chat messages.
+    * Fixed the black corners on some maps.
 
   * Miscellaneous
     * Isle of Anduin renamed to Isle of Alduin to avoid copyright problems.

src/map.cpp

@@ -289,8 +289,8 @@ void gamemap::read(const std::string& data)
 	// post processing on the map
 	const int width = tiles_.size();
 	const int height = width > 0 ? tiles_[0].size() : 0;
-    w_ = width;
-    h_ = height;
+	w_ = width;
+	h_ = height;
 	for(int x = 0; x < width; ++x) {
 		for(int y = 0; y < height; ++y) {
 			
@@ -430,7 +430,27 @@ t_translation::t_letter gamemap::get_terrain(const gamemap::location& loc) const
 		if(on_board(adj[n])) {
 			items[nitems] = tiles_[adj[n].x][adj[n].y];
 			++nitems;
+		} else {
+			// if the terrain is off map but already in the border cache this
+			// will be used to determine the terrain. This avoids glitches
+			// * on map with an even width in the top right corner
+			// * on map with an odd height in the bottom left corner
+			// It might also change the result on other map and become random
+			// but the border tiles will be deterimined in the future so then
+			// this will no longer be used in the game (the editor will use
+			// this feature to expand maps in a better way).
+			std::map<location, t_translation::t_letter>::const_iterator itor = 
+				borderCache_.find(adj[n]);
+
+			// only add if it's in the cache and a valid terrain
+			if(itor != borderCache_.end() && 
+					itor->second != t_translation::NONE_TERRAIN)  {
+
+				items[nitems] = itor->second;
+				++nitems;
+			}
 		}
+
 	}
 
 	//count all the terrain types found, and see which one