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https://github.com/photonstorm/phaser
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38 lines
1.2 KiB
JavaScript
38 lines
1.2 KiB
JavaScript
/**
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* @author Richard Davey <rich@photonstorm.com>
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* @copyright 2022 Photon Storm Ltd.
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* @license {@link https://opensource.org/licenses/MIT|MIT License}
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*/
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/**
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* Converts from tile Y coordinates (tile units) to world Y coordinates (pixels), factoring in the
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* layer's position, scale and scroll.
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*
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* @function Phaser.Tilemaps.Components.TileToWorldY
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* @since 3.0.0
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*
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* @param {number} tileY - The y coordinate, in tiles, not pixels.
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* @param {Phaser.Cameras.Scene2D.Camera} camera - The Camera to use when calculating the tile index from the world values.
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* @param {Phaser.Tilemaps.LayerData} layer - The Tilemap Layer to act upon.
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*
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* @return {number} The Y location in world coordinates.
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*/
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var TileToWorldY = function (tileY, camera, layer)
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{
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var tileHeight = layer.baseTileHeight;
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var tilemapLayer = layer.tilemapLayer;
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var layerWorldY = 0;
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if (tilemapLayer)
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{
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if (!camera) { camera = tilemapLayer.scene.cameras.main; }
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layerWorldY = (tilemapLayer.y + camera.scrollY * (1 - tilemapLayer.scrollFactorY));
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tileHeight *= tilemapLayer.scaleY;
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}
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return layerWorldY + tileY * tileHeight;
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};
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module.exports = TileToWorldY;
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