code: function (map) {
              this._super(me.TMXRenderer, "init", [
                  map.cols,
                  map.rows,
                  map.tilewidth,
                  map.tileheight
              ]);
  
              this.hTilewidth = this.tilewidth / 2;
              this.hTileheight = this.tileheight / 2;
              this.originX = this.rows * this.hTilewidth;
          }
docs: constructor