mirror of
https://github.com/photonstorm/phaser
synced 2024-11-27 15:12:18 +00:00
841 lines
No EOL
26 KiB
TypeScript
841 lines
No EOL
26 KiB
TypeScript
/// <reference path="../Game.ts" />
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/// <reference path="../Statics.ts" />
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/**
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* Phaser - Group
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*
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* This class is used for organising, updating and sorting game objects.
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*/
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module Phaser {
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export class Group {
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constructor(game: Game, maxSize?: number = 0) {
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this.game = game;
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this.type = Phaser.Types.GROUP;
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this.exists = true;
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this.visible = true;
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this.members = [];
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this.length = 0;
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this._maxSize = maxSize;
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this._marker = 0;
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this._sortIndex = null;
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this.cameraBlacklist = [];
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}
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/**
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* Internal tracker for the maximum capacity of the group.
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* Default is 0, or no max capacity.
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*/
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private _maxSize: number;
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/**
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* Internal helper variable for recycling objects a la <code>Emitter</code>.
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*/
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private _marker: number;
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/**
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* Helper for sort.
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*/
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private _sortIndex: string;
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/**
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* Helper for sort.
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*/
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private _sortOrder: number;
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/**
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* Temp vars to help avoid gc spikes
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*/
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private _member;
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private _length: number;
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private _i: number;
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private _prevAlpha: number;
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private _count: number;
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/**
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* Reference to the main game object
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*/
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public game: Game;
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/**
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* The type of game object.
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*/
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public type: number;
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/**
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* If this Group exists or not. Can be set to false to skip certain loop checks.
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*/
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public exists: bool;
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/**
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* Controls if this Group (and all of its contents) are rendered or skipped during the core game loop.
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*/
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public visible: bool;
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/**
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* Use with <code>sort()</code> to sort in ascending order.
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*/
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public static ASCENDING: number = -1;
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/**
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* Use with <code>sort()</code> to sort in descending order.
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*/
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public static DESCENDING: number = 1;
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/**
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* Array of all the objects that exist in this group.
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*/
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public members;
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/**
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* The number of entries in the members array.
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* For performance and safety you should check this variable
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* instead of members.length unless you really know what you're doing!
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*/
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public length: number;
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/**
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* You can set a globalCompositeOperation that will be applied before the render method is called on this Groups children.
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* This is useful if you wish to apply an effect like 'lighten' to a whole group of children as it saves doing it one-by-one.
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* If this value is set it will call a canvas context save and restore before and after the render pass.
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* Set to null to disable.
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*/
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public globalCompositeOperation: string = null;
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/**
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* You can set an alpha value on this Group that will be applied before the render method is called on this Groups children.
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* This is useful if you wish to alpha a whole group of children as it saves doing it one-by-one.
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* Set to 0 to disable.
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*/
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public alpha: number = 0;
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/**
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* An Array of Cameras to which this Group, or any of its children, won't render
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* @type {Array}
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*/
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public cameraBlacklist: number[];
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/**
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* Override this function to handle any deleting or "shutdown" type operations you might need,
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* such as removing traditional Flash children like Basic objects.
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*/
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public destroy() {
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if (this.members != null)
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{
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this._i = 0;
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while (this._i < this.length)
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{
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this._member = this.members[this._i++];
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if (this._member != null)
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{
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this._member.destroy();
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}
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}
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this.members.length = 0;
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}
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this._sortIndex = null;
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}
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/**
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* Calls update on all members of this Group who have a status of active=true and exists=true
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* You can also call Object.update directly, which will bypass the active/exists check.
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*/
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public update(forceUpdate?: bool = false) {
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this._i = 0;
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while (this._i < this.length)
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{
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this._member = this.members[this._i++];
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if (this._member != null && this._member.exists && this._member.active)
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{
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this._member.preUpdate();
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this._member.update(forceUpdate);
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this._member.postUpdate();
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}
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}
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}
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/**
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* Calls render on all members of this Group who have a status of visible=true and exists=true
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* You can also call Object.render directly, which will bypass the visible/exists check.
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*/
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public render(renderer:IRenderer, camera: Camera) {
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if (camera.isHidden(this) == true)
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{
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return;
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}
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if (this.globalCompositeOperation)
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{
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this.game.stage.context.save();
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this.game.stage.context.globalCompositeOperation = this.globalCompositeOperation;
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}
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if (this.alpha > 0)
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{
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this._prevAlpha = this.game.stage.context.globalAlpha;
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this.game.stage.context.globalAlpha = this.alpha;
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}
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this._i = 0;
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while (this._i < this.length)
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{
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this._member = this.members[this._i++];
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if (this._member != null && this._member.exists && this._member.visible && camera.isHidden(this._member) == false)
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{
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this._member.render.call(renderer, camera, this._member);
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}
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}
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if (this.alpha > 0)
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{
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this.game.stage.context.globalAlpha = this._prevAlpha;
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}
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if (this.globalCompositeOperation)
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{
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this.game.stage.context.restore();
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}
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}
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/**
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* The maximum capacity of this group. Default is 0, meaning no max capacity, and the group can just grow.
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*/
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public get maxSize(): number {
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return this._maxSize;
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}
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/**
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* @private
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*/
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public set maxSize(Size: number) {
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this._maxSize = Size;
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if (this._marker >= this._maxSize)
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{
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this._marker = 0;
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}
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if (this._maxSize == 0 || this.members == null || (this._maxSize >= this.members.length))
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{
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return;
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}
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//If the max size has shrunk, we need to get rid of some objects
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this._i = this._maxSize;
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this._length = this.members.length;
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while (this._i < this._length)
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{
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this._member = this.members[this._i++];
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if (this._member != null)
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{
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this._member.destroy();
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}
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}
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this.length = this.members.length = this._maxSize;
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}
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/**
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* Adds a new <code>Basic</code> subclass (Basic, GameObject, Sprite, etc) to the group.
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* Group will try to replace a null member of the array first.
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* Failing that, Group will add it to the end of the member array,
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* assuming there is room for it, and doubling the size of the array if necessary.
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*
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* <p>WARNING: If the group has a maxSize that has already been met,
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* the object will NOT be added to the group!</p>
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*
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* @param {Basic} Object The object you want to add to the group.
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* @return {Basic} The same <code>Basic</code> object that was passed in.
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*/
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public add(object): any {
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//Don't bother adding an object twice.
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if (this.members.indexOf(Object) >= 0)
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{
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return object;
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}
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//First, look for a null entry where we can add the object.
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this._i = 0;
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this._length = this.members.length;
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while (this._i < this._length)
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{
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if (this.members[this._i] == null)
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{
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this.members[this._i] = object;
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if (this._i >= this.length)
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{
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this.length = this._i + 1;
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}
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return object;
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}
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this._i++;
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}
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//Failing that, expand the array (if we can) and add the object.
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if (this._maxSize > 0)
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{
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if (this.members.length >= this._maxSize)
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{
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return object;
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}
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else if (this.members.length * 2 <= this._maxSize)
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{
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this.members.length *= 2;
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}
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else
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{
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this.members.length = this._maxSize;
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}
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}
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else
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{
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this.members.length *= 2;
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}
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//If we made it this far, then we successfully grew the group,
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//and we can go ahead and add the object at the first open slot.
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this.members[this._i] = object;
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this.length = this._i + 1;
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return object;
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}
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/**
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* Recycling is designed to help you reuse game objects without always re-allocating or "newing" them.
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*
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* <p>If you specified a maximum size for this group (like in Emitter),
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* then recycle will employ what we're calling "rotating" recycling.
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* Recycle() will first check to see if the group is at capacity yet.
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* If group is not yet at capacity, recycle() returns a new object.
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* If the group IS at capacity, then recycle() just returns the next object in line.</p>
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*
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* <p>If you did NOT specify a maximum size for this group,
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* then recycle() will employ what we're calling "grow-style" recycling.
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* Recycle() will return either the first object with exists == false,
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* or, finding none, add a new object to the array,
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* doubling the size of the array if necessary.</p>
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*
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* <p>WARNING: If this function needs to create a new object,
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* and no object class was provided, it will return null
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* instead of a valid object!</p>
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*
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* @param {class} ObjectClass The class type you want to recycle (e.g. Basic, EvilRobot, etc). Do NOT "new" the class in the parameter!
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*
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* @return {any} A reference to the object that was created. Don't forget to cast it back to the Class you want (e.g. myObject = myGroup.recycle(myObjectClass) as myObjectClass;).
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*/
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public recycle(objectClass = null) {
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if (this._maxSize > 0)
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{
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if (this.length < this._maxSize)
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{
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if (objectClass == null)
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{
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return null;
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}
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return this.add(new objectClass(this.game));
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}
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else
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{
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this._member = this.members[this._marker++];
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if (this._marker >= this._maxSize)
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{
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this._marker = 0;
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}
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return this._member;
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}
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}
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else
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{
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this._member = this.getFirstAvailable(objectClass);
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if (this._member != null)
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{
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return this._member;
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}
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if (objectClass == null)
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{
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return null;
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}
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return this.add(new objectClass(this.game));
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}
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}
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/**
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* Removes an object from the group.
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*
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* @param {Basic} object The <code>Basic</code> you want to remove.
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* @param {boolean} splice Whether the object should be cut from the array entirely or not.
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*
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* @return {Basic} The removed object.
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*/
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public remove(object, splice: bool = false) {
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this._i = this.members.indexOf(object);
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if (this._i < 0 || (this._i >= this.members.length))
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{
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return null;
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}
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if (splice)
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{
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this.members.splice(this._i, 1);
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this.length--;
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}
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else
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{
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this.members[this._i] = null;
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}
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return object;
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}
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/**
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* Replaces an existing <code>Basic</code> with a new one.
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*
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* @param {Basic} oldObject The object you want to replace.
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* @param {Basic} newObject The new object you want to use instead.
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*
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* @return {Basic} The new object.
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*/
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public replace(oldObject, newObject) {
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this._i = this.members.indexOf(oldObject);
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if (this._i < 0 || (this._i >= this.members.length))
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{
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return null;
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}
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this.members[this._i] = newObject;
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return newObject;
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}
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/**
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* Call this function to sort the group according to a particular value and order.
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* For example, to sort game objects for Zelda-style overlaps you might call
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* <code>myGroup.sort("y",Group.ASCENDING)</code> at the bottom of your
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* <code>State.update()</code> override. To sort all existing objects after
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* a big explosion or bomb attack, you might call <code>myGroup.sort("exists",Group.DESCENDING)</code>.
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*
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* @param {string} index The <code>string</code> name of the member variable you want to sort on. Default value is "y".
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* @param {number} order A <code>Group</code> constant that defines the sort order. Possible values are <code>Group.ASCENDING</code> and <code>Group.DESCENDING</code>. Default value is <code>Group.ASCENDING</code>.
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*/
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public sort(index: string = "y", order: number = Group.ASCENDING) {
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this._sortIndex = index;
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this._sortOrder = order;
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this.members.sort(this.sortHandler);
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}
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/**
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* Go through and set the specified variable to the specified value on all members of the group.
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*
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* @param {string} VariableName The string representation of the variable name you want to modify, for example "visible" or "scrollFactor".
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* @param {Object} Value The value you want to assign to that variable.
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* @param {boolean} Recurse Default value is true, meaning if <code>setAll()</code> encounters a member that is a group, it will call <code>setAll()</code> on that group rather than modifying its variable.
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*/
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public setAll(variableName: string, value: Object, recurse: bool = true) {
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this._i = 0;
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while (this._i < this.length)
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{
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this._member = this.members[this._i++];
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if (this._member != null)
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{
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if (recurse && this._member.type == Phaser.Types.GROUP)
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{
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this._member.setAll(variableName, value, recurse);
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}
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else
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{
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this._member[variableName] = value;
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}
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}
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}
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}
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/**
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* Go through and call the specified function on all members of the group.
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* Currently only works on functions that have no required parameters.
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*
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* @param {string} FunctionName The string representation of the function you want to call on each object, for example "kill()" or "init()".
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* @param {boolean} Recurse Default value is true, meaning if <code>callAll()</code> encounters a member that is a group, it will call <code>callAll()</code> on that group rather than calling the group's function.
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*/
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public callAll(functionName: string, recurse: bool = true) {
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this._i = 0;
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while (this._i < this.length)
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{
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this._member = this.members[this._i++];
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if (this._member != null)
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{
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if (recurse && this._member.type == Phaser.Types.GROUP)
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{
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this._member.callAll(functionName, recurse);
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}
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else
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{
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this._member[functionName]();
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}
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}
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}
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}
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/**
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* @param {function} callback
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* @param {boolean} recursive
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*/
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public forEach(callback, recursive: bool = false) {
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this._i = 0;
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while (this._i < this.length)
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{
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this._member = this.members[this._i++];
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if (this._member != null)
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{
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if (recursive && this._member.type == Phaser.Types.GROUP)
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{
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this._member.forEach(callback, true);
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}
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else
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{
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callback.call(this, this._member);
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}
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}
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}
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}
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/**
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* @param {any} context
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* @param {function} callback
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* @param {boolean} recursive
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*/
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public forEachAlive(context, callback, recursive: bool = false) {
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this._i = 0;
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while (this._i < this.length)
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{
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this._member = this.members[this._i++];
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if (this._member != null && this._member.alive)
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{
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if (recursive && this._member.type == Phaser.Types.GROUP)
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{
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this._member.forEachAlive(context, callback, true);
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}
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else
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{
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callback.call(context, this._member);
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}
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}
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}
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}
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/**
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* Call this function to retrieve the first object with exists == false in the group.
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* This is handy for recycling in general, e.g. respawning enemies.
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*
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* @param {any} [ObjectClass] An optional parameter that lets you narrow the results to instances of this particular class.
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*
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* @return {any} A <code>Basic</code> currently flagged as not existing.
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*/
|
|
public getFirstAvailable(objectClass = null) {
|
|
|
|
this._i = 0;
|
|
|
|
while (this._i < this.length)
|
|
{
|
|
this._member = this.members[this._i++];
|
|
|
|
if ((this._member != null) && !this._member.exists && ((objectClass == null) || (typeof this._member === objectClass)))
|
|
{
|
|
return this._member;
|
|
}
|
|
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Call this function to retrieve the first index set to 'null'.
|
|
* Returns -1 if no index stores a null object.
|
|
*
|
|
* @return {number} An <code>int</code> indicating the first null slot in the group.
|
|
*/
|
|
public getFirstNull(): number {
|
|
|
|
this._i = 0;
|
|
|
|
while (this._i < this.length)
|
|
{
|
|
if (this.members[this._i] == null)
|
|
{
|
|
return this._i;
|
|
}
|
|
else
|
|
{
|
|
this._i++;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
/**
|
|
* Call this function to retrieve the first object with exists == true in the group.
|
|
* This is handy for checking if everything's wiped out, or choosing a squad leader, etc.
|
|
*
|
|
* @return {Basic} A <code>Basic</code> currently flagged as existing.
|
|
*/
|
|
public getFirstExtant() {
|
|
|
|
this._i = 0;
|
|
|
|
while (this._i < this.length)
|
|
{
|
|
this._member = this.members[this._i++];
|
|
|
|
if (this._member != null && this._member.exists)
|
|
{
|
|
return this._member;
|
|
}
|
|
}
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
/**
|
|
* Call this function to retrieve the first object with dead == false in the group.
|
|
* This is handy for checking if everything's wiped out, or choosing a squad leader, etc.
|
|
*
|
|
* @return {Basic} A <code>Basic</code> currently flagged as not dead.
|
|
*/
|
|
public getFirstAlive() {
|
|
|
|
this._i = 0;
|
|
|
|
while (this._i < this.length)
|
|
{
|
|
this._member = this.members[this._i++];
|
|
|
|
if ((this._member != null) && this._member.exists && this._member.alive)
|
|
{
|
|
return this._member;
|
|
}
|
|
}
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
/**
|
|
* Call this function to retrieve the first object with dead == true in the group.
|
|
* This is handy for checking if everything's wiped out, or choosing a squad leader, etc.
|
|
*
|
|
* @return {Basic} A <code>Basic</code> currently flagged as dead.
|
|
*/
|
|
public getFirstDead() {
|
|
|
|
this._i = 0;
|
|
|
|
while (this._i < this.length)
|
|
{
|
|
this._member = this.members[this._i++];
|
|
|
|
if ((this._member != null) && !this._member.alive)
|
|
{
|
|
return this._member;
|
|
}
|
|
}
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
/**
|
|
* Call this function to find out how many members of the group are not dead.
|
|
*
|
|
* @return {number} The number of <code>Basic</code>s flagged as not dead. Returns -1 if group is empty.
|
|
*/
|
|
public countLiving(): number {
|
|
|
|
this._count = -1;
|
|
this._i = 0;
|
|
|
|
while (this._i < this.length)
|
|
{
|
|
this._member = this.members[this._i++];
|
|
|
|
if (this._member != null)
|
|
{
|
|
if (this._count < 0)
|
|
{
|
|
this._count = 0;
|
|
}
|
|
|
|
if (this._member.exists && this._member.alive)
|
|
{
|
|
this._count++;
|
|
}
|
|
}
|
|
}
|
|
|
|
return this._count;
|
|
|
|
}
|
|
|
|
/**
|
|
* Call this function to find out how many members of the group are dead.
|
|
*
|
|
* @return {number} The number of <code>Basic</code>s flagged as dead. Returns -1 if group is empty.
|
|
*/
|
|
public countDead(): number {
|
|
|
|
this._count = -1;
|
|
this._i = 0;
|
|
|
|
while (this._i < this.length)
|
|
{
|
|
this._member = this.members[this._i++];
|
|
|
|
if (this._member != null)
|
|
{
|
|
if (this._count < 0)
|
|
{
|
|
this._count = 0;
|
|
}
|
|
|
|
if (!this._member.alive)
|
|
{
|
|
this._count++;
|
|
}
|
|
}
|
|
}
|
|
|
|
return this._count;
|
|
|
|
}
|
|
|
|
/**
|
|
* Returns a member at random from the group.
|
|
*
|
|
* @param {number} StartIndex Optional offset off the front of the array. Default value is 0, or the beginning of the array.
|
|
* @param {number} Length Optional restriction on the number of values you want to randomly select from.
|
|
*
|
|
* @return {Basic} A <code>Basic</code> from the members list.
|
|
*/
|
|
public getRandom(startIndex: number = 0, length: number = 0) {
|
|
|
|
if (length == 0)
|
|
{
|
|
length = this.length;
|
|
}
|
|
|
|
return this.game.math.getRandom(this.members, startIndex, length);
|
|
|
|
}
|
|
|
|
/**
|
|
* Remove all instances of <code>Basic</code> subclass (Basic, Block, etc) from the list.
|
|
* WARNING: does not destroy() or kill() any of these objects!
|
|
*/
|
|
public clear() {
|
|
this.length = this.members.length = 0;
|
|
}
|
|
|
|
/**
|
|
* Calls kill on the group's members and then on the group itself.
|
|
*/
|
|
public kill() {
|
|
|
|
this._i = 0;
|
|
|
|
while (this._i < this.length)
|
|
{
|
|
this._member = this.members[this._i++];
|
|
|
|
if ((this._member != null) && this._member.exists)
|
|
{
|
|
this._member.kill();
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Helper function for the sort process.
|
|
*
|
|
* @param {Basic} Obj1 The first object being sorted.
|
|
* @param {Basic} Obj2 The second object being sorted.
|
|
*
|
|
* @return {number} An integer value: -1 (Obj1 before Obj2), 0 (same), or 1 (Obj1 after Obj2).
|
|
*/
|
|
public sortHandler(obj1, obj2): number {
|
|
|
|
if (obj1[this._sortIndex] < obj2[this._sortIndex])
|
|
{
|
|
return this._sortOrder;
|
|
}
|
|
else if (obj1[this._sortIndex] > obj2[this._sortIndex])
|
|
{
|
|
return -this._sortOrder;
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} |