bool exists( const SGBucket& b ) const;
// Ensure at least one entry is free in the cache
- void make_space();
+ bool make_space();
// Clear all completely loaded tiles (ignores partially loaded tiles)
void clear_cache();
/**
* Create a new tile and enqueue it for loading.
* @param b
+ * @return success/failure
*/
- void insert_tile( FGTileEntry* e );
+ bool insert_tile( FGTileEntry* e );
};