var IsInLayerBounds = require('./IsInLayerBounds'); 
var HasTileAt = function (tileX, tileY, layer){ 
if (IsInLayerBounds(tileX, tileY, layer)) { 
var tile = layer.data[tileY][tileX]; 
return (tile !== null  && tile.index > -1); 
} 
 else { 
return false ; 
} 
} 
; 
module.exports = HasTileAt;