arcade-physics
Version:
Use Arcade Physics without Phaser.
103 lines • 3.88 kB
JavaScript
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/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2013-2023 Photon Storm Ltd.
* @license {@link https://opensource.org/licenses/MIT|MIT License}
*/
var CheckIsoBounds = require('./CheckIsoBounds');
/**
* Returns the tiles in the given layer that are within the cameras viewport. This is used internally.
*
* @function Phaser.Tilemaps.Components.IsometricCullTiles
* @since 3.50.0
*
* @param {Phaser.Tilemaps.LayerData} layer - The Tilemap Layer to act upon.
* @param {Phaser.Cameras.Scene2D.Camera} camera - The Camera to run the cull check against.
* @param {array} [outputArray] - An optional array to store the Tile objects within.
* @param {number} [renderOrder=0] - The rendering order constant.
*
* @return {Phaser.Tilemaps.Tile[]} An array of Tile objects.
*/
var IsometricCullTiles = function (layer, camera, outputArray, renderOrder) {
if (outputArray === undefined) {
outputArray = [];
}
if (renderOrder === undefined) {
renderOrder = 0;
}
outputArray.length = 0;
var tilemapLayer = layer.tilemapLayer;
var mapData = layer.data;
var mapWidth = layer.width;
var mapHeight = layer.height;
var drawLeft = 0;
var drawRight = mapWidth;
var drawTop = 0;
var drawBottom = mapHeight;
if (!tilemapLayer.skipCull) {
var x;
var y;
var tile;
if (renderOrder === 0) {
// right-down
for (y = drawTop; y < drawBottom; y++) {
for (x = drawLeft; mapData[y] && x < drawRight; x++) {
if (CheckIsoBounds(x, y, layer, camera)) {
tile = mapData[y][x];
if (!tile || tile.index === -1 || !tile.visible || tile.alpha === 0) {
continue;
}
outputArray.push(tile);
}
}
}
}
else if (renderOrder === 1) {
// left-down
for (y = drawTop; y < drawBottom; y++) {
for (x = drawRight; mapData[y] && x >= drawLeft; x--) {
if (CheckIsoBounds(x, y, layer, camera)) {
tile = mapData[y][x];
if (!tile || tile.index === -1 || !tile.visible || tile.alpha === 0) {
continue;
}
outputArray.push(tile);
}
}
}
}
else if (renderOrder === 2) {
// right-up
for (y = drawBottom; y >= drawTop; y--) {
for (x = drawLeft; mapData[y] && x < drawRight; x++) {
if (CheckIsoBounds(x, y, layer, camera)) {
tile = mapData[y][x];
if (!tile || tile.index === -1 || !tile.visible || tile.alpha === 0) {
continue;
}
outputArray.push(tile);
}
}
}
}
else if (renderOrder === 3) {
// left-up
for (y = drawBottom; y >= drawTop; y--) {
for (x = drawRight; mapData[y] && x >= drawLeft; x--) {
if (CheckIsoBounds(x, y, layer, camera)) {
tile = mapData[y][x];
if (!tile || tile.index === -1 || !tile.visible || tile.alpha === 0) {
continue;
}
outputArray.push(tile);
}
}
}
}
}
tilemapLayer.tilesDrawn = outputArray.length;
tilemapLayer.tilesTotal = mapWidth * mapHeight;
return outputArray;
};
module.exports = IsometricCullTiles;
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