phaser/src/tilemaps/components/GetTilesWithinWorldXY.js

/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @copyright    2019 Photon Storm Ltd.
 * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
 */

var GetTilesWithin = require('./GetTilesWithin');
var WorldToTileX = require('./WorldToTileX');
var WorldToTileY = require('./WorldToTileY');

/**
 * Gets the tiles in the given rectangular area (in world coordinates) of the layer.
 *
 * @function Phaser.Tilemaps.Components.GetTilesWithinWorldXY
 * @private
 * @since 3.0.0
 *
 * @param {number} worldX - The world x coordinate for the top-left of the area.
 * @param {number} worldY - The world y coordinate for the top-left of the area.
 * @param {number} width - The width of the area.
 * @param {number} height - The height of the area.
 * @param {object} [filteringOptions] - Optional filters to apply when getting the tiles.
 * @param {boolean} [filteringOptions.isNotEmpty=false] - If true, only return tiles that don't have -1 for an index.
 * @param {boolean} [filteringOptions.isColliding=false] - If true, only return tiles that collide on at least one side.
 * @param {boolean} [filteringOptions.hasInterestingFace=false] - If true, only return tiles that have at least one interesting face.
 * @param {Phaser.Cameras.Scene2D.Camera} [camera=main camera] - The Camera to use when factoring in which tiles to return.
 * @param {Phaser.Tilemaps.LayerData} layer - The Tilemap Layer to act upon.
 * 
 * @return {Phaser.Tilemaps.Tile[]} Array of Tile objects.
 */
var GetTilesWithinWorldXY = function (worldX, worldY, width, height, filteringOptions, camera, layer)
{
    // Top left corner of the rect, rounded down to include partial tiles
    var xStart = WorldToTileX(worldX, true, camera, layer);
    var yStart = WorldToTileY(worldY, true, camera, layer);

    // Bottom right corner of the rect, rounded up to include partial tiles
    var xEnd = Math.ceil(WorldToTileX(worldX + width, false, camera, layer));
    var yEnd = Math.ceil(WorldToTileY(worldY + height, false, camera, layer));

    return GetTilesWithin(xStart, yStart, xEnd - xStart, yEnd - yStart, filteringOptions, layer);
};

module.exports = GetTilesWithinWorldXY;