2018-02-12 16:01:20 +00:00
|
|
|
/**
|
|
|
|
* @author Richard Davey <rich@photonstorm.com>
|
|
|
|
* @copyright 2018 Photon Storm Ltd.
|
|
|
|
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
|
|
|
|
*/
|
|
|
|
|
2017-11-27 13:33:30 +00:00
|
|
|
/**
|
|
|
|
* Converts from world Y coordinates (pixels) to tile Y coordinates (tile units), factoring in the
|
|
|
|
* layer's position, scale and scroll.
|
|
|
|
*
|
2018-02-08 01:08:59 +00:00
|
|
|
* @function Phaser.Tilemaps.Components.WorldToTileY
|
2018-04-16 14:25:22 +00:00
|
|
|
* @private
|
2018-02-08 01:08:59 +00:00
|
|
|
* @since 3.0.0
|
|
|
|
*
|
2017-11-27 13:33:30 +00:00
|
|
|
* @param {number} worldY - [description]
|
|
|
|
* @param {boolean} [snapToFloor=true] - Whether or not to round the tile coordinate down to the
|
|
|
|
* nearest integer.
|
2018-02-08 01:08:59 +00:00
|
|
|
* @param {Phaser.Cameras.Scene2D.Camera} [camera=main camera] - [description]
|
2018-02-08 02:02:37 +00:00
|
|
|
* @param {Phaser.Tilemaps.LayerData} layer - The Tilemap Layer to act upon.
|
2018-02-08 01:08:59 +00:00
|
|
|
*
|
2018-02-07 23:27:01 +00:00
|
|
|
* @return {number} The Y location in tile units.
|
2017-11-27 13:33:30 +00:00
|
|
|
*/
|
2017-11-25 13:08:06 +00:00
|
|
|
var WorldToTileY = function (worldY, snapToFloor, camera, layer)
|
2017-11-17 02:36:45 +00:00
|
|
|
{
|
2017-11-25 13:08:06 +00:00
|
|
|
if (snapToFloor === undefined) { snapToFloor = true; }
|
|
|
|
|
2017-12-01 19:25:48 +00:00
|
|
|
var tileHeight = layer.baseTileHeight;
|
2017-11-17 02:36:45 +00:00
|
|
|
var tilemapLayer = layer.tilemapLayer;
|
2017-11-25 23:12:24 +00:00
|
|
|
|
2017-11-17 02:36:45 +00:00
|
|
|
if (tilemapLayer)
|
|
|
|
{
|
|
|
|
if (camera === undefined) { camera = tilemapLayer.scene.cameras.main; }
|
|
|
|
|
|
|
|
// Find the world position relative to the static or dynamic layer's top left origin,
|
2017-11-25 23:12:24 +00:00
|
|
|
// factoring in the camera's vertical scroll
|
2017-11-30 15:22:54 +00:00
|
|
|
worldY = worldY - (tilemapLayer.y + camera.scrollY * (1 - tilemapLayer.scrollFactorY));
|
2017-11-25 23:12:24 +00:00
|
|
|
|
|
|
|
tileHeight *= tilemapLayer.scaleY;
|
2017-11-17 02:36:45 +00:00
|
|
|
}
|
|
|
|
|
2017-11-25 13:08:06 +00:00
|
|
|
return snapToFloor
|
2017-11-25 23:12:24 +00:00
|
|
|
? Math.floor(worldY / tileHeight)
|
|
|
|
: worldY / tileHeight;
|
2017-11-17 02:36:45 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
module.exports = WorldToTileY;
|