phaser/v3/src/gameobjects/tilemap/components/GetTileAt.js

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var IsInLayerBounds = require('./IsInLayerBounds');
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/**
* Gets a tile at the given tile coordinates from the given layer.
*
* @param {number} tileX - X position to get the tile from (given in tile units, not pixels)
* @param {number} tileY - Y position to get the tile from (given in tile units, not pixels)
* @param {boolean} [nonNull=false] - If true getTile won't return null for empty tiles, but a Tile
* object with an index of -1.
* @param {LayerData} layer - [description]
* @return {Tile} The tile at the given coordinates or null if no tile was found or the coordinates
* were invalid.
*/
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var GetTileAt = function (tileX, tileY, nonNull, layer)
{
if (nonNull === undefined) { nonNull = false; }
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if (IsInLayerBounds(tileX, tileY, layer))
{
var tile = layer.data[tileY][tileX];
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if (tile === null)
{
return null;
}
else if (tile.index === -1)
{
return nonNull ? tile : null;
}
else
{
return tile;
}
}
else
{
return null;
}
};
module.exports = GetTileAt;