cocos2d-lua学习之tilemapZorder Life is but a span.

bool HelloWorld::isPositionBlock(CCPoint position)
{
     CCPoint tileCoord = this->tileCoordForPosition(position);
     int tileGid = _metaLayer->tileGIDAt(tileCoord);
     
     CCDictionary *properties = _tileMap->propertiesForGID(tileGid);
     
     if (properties)
     {
         CCString* collision = const_cast<CCString*>(properties->valueForKey("block"));
         
         if ( 0 == strcmp(collision->getCString(), "true") )
         {
             return true;
         }
     }
     
     return false;
}