WorldToTileX = function (worldX, snapToFloor, camera, layer)
{
    WorldToTileXY(worldX, 0, snapToFloor, tempVec, camera, layer);

    return tempVec.x;
}
Converts from world X coordinates (pixels) to tile X coordinates (tile units), factoring in the
layer's position, scale and scroll.

@function Phaser.Tilemaps.Components.WorldToTileX
@since 3.0.0

@param {number} worldX - The x coordinate to be converted, in pixels, not tiles.
@param {boolean} snapToFloor - Whether or not to round the tile coordinate down to the nearest integer.
@param {?Phaser.Cameras.Scene2D.Camera} camera - The Camera to use when calculating the tile index from the world values.
@param {Phaser.Tilemaps.LayerData} layer - The Tilemap Layer to act upon.

@return {number} The X location in tile units.