phaser
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A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers.
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JavaScript
/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2014 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* A Group is a container for display objects that allows for fast pooling and object recycling.
* Groups can be nested within other Groups and have their own local transforms.
*
* @class Phaser.Group
* @constructor
* @param {Phaser.Game} game - A reference to the currently running game.
* @param {Phaser.Group|Phaser.Sprite|null} parent - The parent Group, DisplayObject or DisplayObjectContainer that this Group will be added to. If `undefined` it will use game.world. If null it won't be added to anything.
* @param {string} [name=group] - A name for this Group. Not used internally but useful for debugging.
* @param {boolean} [addToStage=false] - If set to true this Group will be added directly to the Game.Stage instead of Game.World.
* @param {boolean} [enableBody=false] - If true all Sprites created with `Group.create` or `Group.createMulitple` will have a physics body created on them. Change the body type with physicsBodyType.
* @param {number} [physicsBodyType=0] - If enableBody is true this is the type of physics body that is created on new Sprites. Phaser.Physics.ARCADE, Phaser.Physics.P2, Phaser.Physics.NINJA, etc.
*/
Phaser.Group = function (game, parent, name, addToStage, enableBody, physicsBodyType) {
if (typeof addToStage === 'undefined') { addToStage = false; }
if (typeof enableBody === 'undefined') { enableBody = false; }
if (typeof physicsBodyType === 'undefined') { physicsBodyType = Phaser.Physics.ARCADE; }
/**
* @property {Phaser.Game} game - A reference to the currently running Game.
*/
this.game = game;
if (typeof parent === 'undefined')
{
parent = game.world;
}
/**
* @property {string} name - A name for this Group. Not used internally but useful for debugging.
*/
this.name = name || 'group';
PIXI.DisplayObjectContainer.call(this);
if (addToStage)
{
this.game.stage.addChild(this);
}
else
{
if (parent)
{
parent.addChild(this);
}
}
/**
* @property {number} z - The z-depth value of this object within its Group (remember the World is a Group as well). No two objects in a Group can have the same z value.
*/
this.z = 0;
/**
* @property {number} type - Internal Phaser Type value.
* @protected
*/
this.type = Phaser.GROUP;
/**
* @property {boolean} alive - The alive property is useful for Groups that are children of other Groups and need to be included/excluded in checks like forEachAlive.
* @default
*/
this.alive = true;
/**
* @property {boolean} exists - If exists is true the Group is updated, otherwise it is skipped.
* @default
*/
this.exists = true;
/**
* @property {boolean} ignoreDestroy - A Group with `ignoreDestroy` set to `true` ignores all calls to its `destroy` method.
* @default
*/
this.ignoreDestroy = false;
/**
* The type of objects that will be created when you use Group.create or Group.createMultiple. Defaults to Phaser.Sprite.
* When a new object is created it is passed the following parameters to its constructor: game, x, y, key, frame.
* @property {object} classType
* @default
*/
this.classType = Phaser.Sprite;
/**
* @property {Phaser.Group|Phaser.Sprite} parent - The parent of this Group.
*/
/**
* @property {Phaser.Point} scale - The scale of the Group container.
*/
this.scale = new Phaser.Point(1, 1);
/**
* @property {Phaser.Point} pivot - The pivot point of the Group container.
*/
/**
* The cursor is a simple way to iterate through the objects in a Group using the Group.next and Group.previous functions.
* The cursor is set to the first child added to the Group and doesn't change unless you call next, previous or set it directly with Group.cursor.
* @property {any} cursor - The current display object that the Group cursor is pointing to.
*/
this.cursor = null;
/**
* @property {Phaser.Point} cameraOffset - If this object is fixedToCamera then this stores the x/y offset that its drawn at, from the top-left of the camera view.
*/
this.cameraOffset = new Phaser.Point();
/**
* @property {boolean} enableBody - If true all Sprites created by, or added to this Group, will have a physics body enabled on them. Change the body type with `Group.physicsBodyType`.
* @default
*/
this.enableBody = enableBody;
/**
* @property {boolean} enableBodyDebug - If true when a physics body is created (via Group.enableBody) it will create a physics debug object as well. Only works for P2 bodies.
*/
this.enableBodyDebug = false;
/**
* @property {number} physicsBodyType - If Group.enableBody is true this is the type of physics body that is created on new Sprites. Phaser.Physics.ARCADE, Phaser.Physics.P2, Phaser.Physics.NINJA, etc.
*/
this.physicsBodyType = physicsBodyType;
/**
* @property {Phaser.Signal} onDestroy - This signal is dispatched when the parent is destoyed.
*/
this.onDestroy = new Phaser.Signal();
/**
* @property {string} _sortProperty - The property on which children are sorted.
* @private
*/
this._sortProperty = 'z';
/**
* A small internal cache:
* 0 = previous position.x
* 1 = previous position.y
* 2 = previous rotation
* 3 = renderID
* 4 = fresh? (0 = no, 1 = yes)
* 5 = outOfBoundsFired (0 = no, 1 = yes)
* 6 = exists (0 = no, 1 = yes)
* 7 = fixed to camera (0 = no, 1 = yes)
* 8 = cursor index
* 9 = sort order
* @property {Array} _cache
* @private
*/
this._cache = [ 0, 0, 0, 0, 1, 0, 1, 0, 0, 0 ];
};
Phaser.Group.prototype = Object.create(PIXI.DisplayObjectContainer.prototype);
Phaser.Group.prototype.constructor = Phaser.Group;
/**
* @constant
* @type {number}
*/
Phaser.Group.RETURN_NONE = 0;
/**
* @constant
* @type {number}
*/
Phaser.Group.RETURN_TOTAL = 1;
/**
* @constant
* @type {number}
*/
Phaser.Group.RETURN_CHILD = 2;
/**
* @constant
* @type {number}
*/
Phaser.Group.SORT_ASCENDING = -1;
/**
* @constant
* @type {number}
*/
Phaser.Group.SORT_DESCENDING = 1;
/**
* Adds an existing object to this Group. The object can be an instance of Phaser.Sprite, Phaser.Button or any other display object.
* The child is automatically added to the top of the Group, so renders on-top of everything else within the Group. If you need to control
* that then see the addAt method.
*
* @see Phaser.Group#create
* @see Phaser.Group#addAt
* @method Phaser.Group#add
* @param {*} child - An instance of Phaser.Sprite, Phaser.Button or any other display object.
* @param {boolean} [silent=false] - If the silent parameter is `true` the child will not dispatch the onAddedToGroup event.
* @return {*} The child that was added to the Group.
*/
Phaser.Group.prototype.add = function (child, silent) {
if (typeof silent === 'undefined') { silent = false; }
if (child.parent !== this)
{
if (this.enableBody)
{
this.game.physics.enable(child, this.physicsBodyType);
}
this.addChild(child);
child.z = this.children.length;
if (!silent && child.events)
{
child.events.onAddedToGroup.dispatch(child, this);
}
if (this.cursor === null)
{
this.cursor = child;
}
}
return child;
};
/**
* Adds an array existing objects to this Group. The objects can be instances of Phaser.Sprite, Phaser.Button or any other display object.
* The children are automatically added to the top of the Group, so render on-top of everything else within the Group.
* TODO: Add ability to pass the children as parameters rather than having to be an array.
*
* @method Phaser.Group#addMultiple
* @param {array} children - An array containing instances of Phaser.Sprite, Phaser.Button or any other display object.
* @param {boolean} [silent=false] - If the silent parameter is `true` the children will not dispatch the onAddedToGroup event.
* @return {*} The array of children that were added to the Group.
*/
Phaser.Group.prototype.addMultiple = function (children, silent) {
if (Array.isArray(children))
{
for (var i = 0; i < children.length; i++)
{
this.add(children[i], silent);
}
}
return children;
};
/**
* Adds an existing object to this Group. The object can be an instance of Phaser.Sprite, Phaser.Button or any other display object.
* The child is added to the Group at the location specified by the index value, this allows you to control child ordering.
*
* @method Phaser.Group#addAt
* @param {*} child - An instance of Phaser.Sprite, Phaser.Button or any other display object..
* @param {number} index - The index within the Group to insert the child to.
* @param {boolean} [silent=false] - If the silent parameter is `true` the child will not dispatch the onAddedToGroup event.
* @return {*} The child that was added to the Group.
*/
Phaser.Group.prototype.addAt = function (child, index, silent) {
if (typeof silent === 'undefined') { silent = false; }
if (child.parent !== this)
{
if (this.enableBody)
{
this.game.physics.enable(child, this.physicsBodyType);
}
this.addChildAt(child, index);
this.updateZ();
if (!silent && child.events)
{
child.events.onAddedToGroup.dispatch(child, this);
}
if (this.cursor === null)
{
this.cursor = child;
}
}
return child;
};
/**
* Returns the child found at the given index within this Group.
*
* @method Phaser.Group#getAt
* @param {number} index - The index to return the child from.
* @return {*} The child that was found at the given index. If the index was out of bounds then this will return -1.
*/
Phaser.Group.prototype.getAt = function (index) {
if (index < 0 || index >= this.children.length)
{
return -1;
}
else
{
return this.getChildAt(index);
}
};
/**
* Automatically creates a new Phaser.Sprite object and adds it to the top of this Group.
* You can change Group.classType to any object and this call will create an object of that type instead, but it should extend either Sprite or Image.
*
* @method Phaser.Group#create
* @param {number} x - The x coordinate to display the newly created Sprite at. The value is in relation to the Group.x point.
* @param {number} y - The y coordinate to display the newly created Sprite at. The value is in relation to the Group.y point.
* @param {string} key - The Game.cache key of the image that this Sprite will use.
* @param {number|string} [frame] - If the Sprite image contains multiple frames you can specify which one to use here.
* @param {boolean} [exists=true] - The default exists state of the Sprite.
* @return {Phaser.Sprite|object} The child that was created. Will be a Phaser.Sprite unless Group.classType has been changed.
*/
Phaser.Group.prototype.create = function (x, y, key, frame, exists) {
if (typeof exists === 'undefined') { exists = true; }
var child = new this.classType(this.game, x, y, key, frame);
if (this.enableBody)
{
this.game.physics.enable(child, this.physicsBodyType, this.enableBodyDebug);
}
child.exists = exists;
child.visible = exists;
child.alive = exists;
this.addChild(child);
child.z = this.children.length;
if (child.events)
{
child.events.onAddedToGroup.dispatch(child, this);
}
if (this.cursor === null)
{
this.cursor = child;
}
return child;
};
/**
* Automatically creates multiple Phaser.Sprite objects and adds them to the top of this Group.
* Useful if you need to quickly generate a pool of identical sprites, such as bullets. By default the sprites will be set to not exist
* and will be positioned at 0, 0 (relative to the Group.x/y)
* You can change Group.classType to any object and this call will create an object of that type instead, but it should extend either Sprite or Image.
*
* @method Phaser.Group#createMultiple
* @param {number} quantity - The number of Sprites to create.
* @param {string} key - The Game.cache key of the image that this Sprite will use.
* @param {number|string} [frame] - If the Sprite image contains multiple frames you can specify which one to use here.
* @param {boolean} [exists=false] - The default exists state of the Sprite.
*/
Phaser.Group.prototype.createMultiple = function (quantity, key, frame, exists) {
if (typeof exists === 'undefined') { exists = false; }
for (var i = 0; i < quantity; i++)
{
this.create(0, 0, key, frame, exists);
}
};
/**
* Internal method that re-applies all of the childrens Z values.
*
* @method Phaser.Group#updateZ
* @protected
*/
Phaser.Group.prototype.updateZ = function () {
var i = this.children.length;
while (i--)
{
this.children[i].z = i;
}
};
/**
* Sets the Group cursor to the first object in the Group. If the optional index parameter is given it sets the cursor to the object at that index instead.
*
* @method Phaser.Group#resetCursor
* @param {number} [index=0] - Set the cursor to point to a specific index.
* @return {*} The child the cursor now points to.
*/
Phaser.Group.prototype.resetCursor = function (index) {
if (typeof index === 'undefined') { index = 0; }
if (index > this.children.length - 1)
{
index = 0;
}
if (this.cursor)
{
this._cache[8] = index;
this.cursor = this.children[this._cache[8]];
return this.cursor;
}
};
/**
* Advances the Group cursor to the next object in the Group. If it's at the end of the Group it wraps around to the first object.
*
* @method Phaser.Group#next
* @return {*} The child the cursor now points to.
*/
Phaser.Group.prototype.next = function () {
if (this.cursor)
{
// Wrap the cursor?
if (this._cache[8] >= this.children.length - 1)
{
this._cache[8] = 0;
}
else
{
this._cache[8]++;
}
this.cursor = this.children[this._cache[8]];
return this.cursor;
}
};
/**
* Moves the Group cursor to the previous object in the Group. If it's at the start of the Group it wraps around to the last object.
*
* @method Phaser.Group#previous
* @return {*} The child the cursor now points to.
*/
Phaser.Group.prototype.previous = function () {
if (this.cursor)
{
// Wrap the cursor?
if (this._cache[8] === 0)
{
this._cache[8] = this.children.length - 1;
}
else
{
this._cache[8]--;
}
this.cursor = this.children[this._cache[8]];
return this.cursor;
}
};
/**
* Swaps the position of two children in this Group. Both children must be in this Group.
* You cannot swap a child with itself, or swap un-parented children.
*
* @method Phaser.Group#swap
* @param {*} child1 - The first child to swap.
* @param {*} child2 - The second child to swap.
*/
Phaser.Group.prototype.swap = function (child1, child2) {
this.swapChildren(child1, child2);
this.updateZ();
};
/**
* Brings the given child to the top of this Group so it renders above all other children.
*
* @method Phaser.Group#bringToTop
* @param {*} child - The child to bring to the top of this Group.
* @return {*} The child that was moved.
*/
Phaser.Group.prototype.bringToTop = function (child) {
if (child.parent === this && this.getIndex(child) < this.children.length)
{
this.remove(child, false, true);
this.add(child, true);
}
return child;
};
/**
* Sends the given child to the bottom of this Group so it renders below all other children.
*
* @method Phaser.Group#sendToBack
* @param {*} child - The child to send to the bottom of this Group.
* @return {*} The child that was moved.
*/
Phaser.Group.prototype.sendToBack = function (child) {
if (child.parent === this && this.getIndex(child) > 0)
{
this.remove(child, false, true);
this.addAt(child, 0, true);
}
return child;
};
/**
* Moves the given child up one place in this Group unless it's already at the top.
*
* @method Phaser.Group#moveUp
* @param {*} child - The child to move up in the Group.
* @return {*} The child that was moved.
*/
Phaser.Group.prototype.moveUp = function (child) {
if (child.parent === this && this.getIndex(child) < this.children.length - 1)
{
var a = this.getIndex(child);
var b = this.getAt(a + 1);
if (b)
{
this.swap(child, b);
}
}
return child;
};
/**
* Moves the given child down one place in this Group unless it's already at the top.
*
* @method Phaser.Group#moveDown
* @param {*} child - The child to move down in the Group.
* @return {*} The child that was moved.
*/
Phaser.Group.prototype.moveDown = function (child) {
if (child.parent === this && this.getIndex(child) > 0)
{
var a = this.getIndex(child);
var b = this.getAt(a - 1);
if (b)
{
this.swap(child, b);
}
}
return child;
};
/**
* Positions the child found at the given index within this Group to the given x and y coordinates.
*
* @method Phaser.Group#xy
* @param {number} index - The index of the child in the Group to set the position of.
* @param {number} x - The new x position of the child.
* @param {number} y - The new y position of the child.
*/
Phaser.Group.prototype.xy = function (index, x, y) {
if (index < 0 || index > this.children.length)
{
return -1;
}
else
{
this.getChildAt(index).x = x;
this.getChildAt(index).y = y;
}
};
/**
* Reverses all children in this Group. Note that this does not propagate, only direct children are re-ordered.
*
* @method Phaser.Group#reverse
*/
Phaser.Group.prototype.reverse = function () {
this.children.reverse();
this.updateZ();
};
/**
* Get the index position of the given child in this Group. This should always match the childs z property.
*
* @method Phaser.Group#getIndex
* @param {*} child - The child to get the index for.
* @return {number} The index of the child or -1 if it's not a member of this Group.
*/
Phaser.Group.prototype.getIndex = function (child) {
return this.children.indexOf(child);
};
/**
* Replaces a child of this Group with the given newChild. The newChild cannot be a member of this Group.
*
* @method Phaser.Group#replace
* @param {*} oldChild - The child in this Group that will be replaced.
* @param {*} newChild - The child to be inserted into this Group.
* @return {*} Returns the oldChild that was replaced within this Group.
*/
Phaser.Group.prototype.replace = function (oldChild, newChild) {
var index = this.getIndex(oldChild);
if (index !== -1)
{
if (newChild.parent !== undefined)
{
newChild.events.onRemovedFromGroup.dispatch(newChild, this);
newChild.parent.removeChild(newChild);
if (newChild.parent instanceof Phaser.Group)
{
newChild.parent.updateZ();
}
}
var temp = oldChild;
this.remove(temp);
this.addAt(newChild, index);
return temp;
}
};
/**
* Checks if the child has the given property. Will scan up to 4 levels deep only.
*
* @method Phaser.Group#hasProperty
* @param {*} child - The child to check for the existance of the property on.
* @param {array} key - An array of strings that make up the property.
* @return {boolean} True if the child has the property, otherwise false.
*/
Phaser.Group.prototype.hasProperty = function (child, key) {
var len = key.length;
if (len === 1 && key[0] in child)
{
return true;
}
else if (len === 2 && key[0] in child && key[1] in child[key[0]])
{
return true;
}
else if (len === 3 && key[0] in child && key[1] in child[key[0]] && key[2] in child[key[0]][key[1]])
{
return true;
}
else if (len === 4 && key[0] in child && key[1] in child[key[0]] && key[2] in child[key[0]][key[1]] && key[3] in child[key[0]][key[1]][key[2]])
{
return true;
}
return false;
};
/**
* Sets a property to the given value on the child. The operation parameter controls how the value is set.
* Operation 0 means set the existing value to the given value, or if force is `false` create a new property with the given value.
* 1 will add the given value to the value already present.
* 2 will subtract the given value from the value already present.
* 3 will multiply the value already present by the given value.
* 4 will divide the value already present by the given value.
*
* @method Phaser.Group#setProperty
* @param {*} child - The child to set the property value on.
* @param {array} key - An array of strings that make up the property that will be set.
* @param {*} value - The value that will be set.
* @param {number} [operation=0] - Controls how the value is assigned. A value of 0 replaces the value with the new one. A value of 1 adds it, 2 subtracts it, 3 multiplies it and 4 divides it.
* @param {boolean} [force=false] - If `force` is true then the property will be set on the child regardless if it already exists or not. If false and the property doesn't exist, nothing will be set.
* @return {boolean} True if the property was set, false if not.
*/
Phaser.Group.prototype.setProperty = function (child, key, value, operation, force) {
if (typeof force === 'undefined') { force = false; }
operation = operation || 0;
// As ugly as this approach looks, and although it's limited to a depth of only 4, it's much faster than a for loop or object iteration.
// 0 = Equals
// 1 = Add
// 2 = Subtract
// 3 = Multiply
// 4 = Divide
// We can't force a property in and the child doesn't have it, so abort.
// Equally we can't add, subtract, multiply or divide a property value if it doesn't exist, so abort in those cases too.
if (!this.hasProperty(child, key) && (!force || operation > 0))
{
return false;
}
var len = key.length;
if (len === 1)
{
if (operation === 0) { child[key[0]] = value; }
else if (operation == 1) { child[key[0]] += value; }
else if (operation == 2) { child[key[0]] -= value; }
else if (operation == 3) { child[key[0]] *= value; }
else if (operation == 4) { child[key[0]] /= value; }
}
else if (len === 2)
{
if (operation === 0) { child[key[0]][key[1]] = value; }
else if (operation == 1) { child[key[0]][key[1]] += value; }
else if (operation == 2) { child[key[0]][key[1]] -= value; }
else if (operation == 3) { child[key[0]][key[1]] *= value; }
else if (operation == 4) { child[key[0]][key[1]] /= value; }
}
else if (len === 3)
{
if (operation === 0) { child[key[0]][key[1]][key[2]] = value; }
else if (operation == 1) { child[key[0]][key[1]][key[2]] += value; }
else if (operation == 2) { child[key[0]][key[1]][key[2]] -= value; }
else if (operation == 3) { child[key[0]][key[1]][key[2]] *= value; }
else if (operation == 4) { child[key[0]][key[1]][key[2]] /= value; }
}
else if (len === 4)
{
if (operation === 0) { child[key[0]][key[1]][key[2]][key[3]] = value; }
else if (operation == 1) { child[key[0]][key[1]][key[2]][key[3]] += value; }
else if (operation == 2) { child[key[0]][key[1]][key[2]][key[3]] -= value; }
else if (operation == 3) { child[key[0]][key[1]][key[2]][key[3]] *= value; }
else if (operation == 4) { child[key[0]][key[1]][key[2]][key[3]] /= value; }
}
return true;
};
/**
* Checks a property for the given value on the child.
*
* @method Phaser.Group#checkProperty
* @param {*} child - The child to check the property value on.
* @param {array} key - An array of strings that make up the property that will be set.
* @param {*} value - The value that will be checked.
* @param {boolean} [force=false] - If `force` is true then the property will be checked on the child regardless if it already exists or not. If true and the property doesn't exist, false will be returned.
* @return {boolean} True if the property was was equal to value, false if not.
*/
Phaser.Group.prototype.checkProperty = function (child, key, value, force) {
if (typeof force === 'undefined') { force = false; }
// We can't force a property in and the child doesn't have it, so abort.
if (!Phaser.Utils.getProperty(child, key) && force)
{
return false;
}
if (Phaser.Utils.getProperty(child, key) !== value)
{
return false;
}
return true;
};
/**
* This function allows you to quickly set a property on a single child of this Group to a new value.
* The operation parameter controls how the new value is assigned to the property, from simple replacement to addition and multiplication.
*
* @method Phaser.Group#set
* @param {Phaser.Sprite} child - The child to set the property on.
* @param {string} key - The property, as a string, to be set. For example: 'body.velocity.x'
* @param {*} value - The value that will be set.
* @param {boolean} [checkAlive=false] - If set then the child will only be updated if alive=true.
* @param {boolean} [checkVisible=false] - If set then the child will only be updated if visible=true.
* @param {number} [operation=0] - Controls how the value is assigned. A value of 0 replaces the value with the new one. A value of 1 adds it, 2 subtracts it, 3 multiplies it and 4 divides it.
* @param {boolean} [force=false] - If `force` is true then the property will be set on the child regardless if it already exists or not. If false and the property doesn't exist, nothing will be set.
* @return {boolean} True if the property was set, false if not.
*/
Phaser.Group.prototype.set = function (child, key, value, checkAlive, checkVisible, operation, force) {
if (typeof force === 'undefined') { force = false; }
key = key.split('.');
if (typeof checkAlive === 'undefined') { checkAlive = false; }
if (typeof checkVisible === 'undefined') { checkVisible = false; }
if ((checkAlive === false || (checkAlive && child.alive)) && (checkVisible === false || (checkVisible && child.visible)))
{
return this.setProperty(child, key, value, operation, force);
}
};
/**
* This function allows you to quickly set the same property across all children of this Group to a new value.
* This call doesn't descend down children, so if you have a Group inside of this Group, the property will be set on the Group but not its children.
* If you need that ability please see `Group.setAllChildren`.
*
* The operation parameter controls how the new value is assigned to the property, from simple replacement to addition and multiplication.
*
* @method Phaser.Group#setAll
* @param {string} key - The property, as a string, to be set. For example: 'body.velocity.x'
* @param {*} value - The value that will be set.
* @param {boolean} [checkAlive=false] - If set then only children with alive=true will be updated. This includes any Groups that are children.
* @param {boolean} [checkVisible=false] - If set then only children with visible=true will be updated. This includes any Groups that are children.
* @param {number} [operation=0] - Controls how the value is assigned. A value of 0 replaces the value with the new one. A value of 1 adds it, 2 subtracts it, 3 multiplies it and 4 divides it.
* @param {boolean} [force=false] - If `force` is true then the property will be set on the child regardless if it already exists or not. If false and the property doesn't exist, nothing will be set.
*/
Phaser.Group.prototype.setAll = function (key, value, checkAlive, checkVisible, operation, force) {
if (typeof checkAlive === 'undefined') { checkAlive = false; }
if (typeof checkVisible === 'undefined') { checkVisible = false; }
if (typeof force === 'undefined') { force = false; }
key = key.split('.');
operation = operation || 0;
for (var i = 0, len = this.children.length; i < len; i++)
{
if ((!checkAlive || (checkAlive && this.children[i].alive)) && (!checkVisible || (checkVisible && this.children[i].visible)))
{
this.setProperty(this.children[i], key, value, operation, force);
}
}
};
/**
* This function allows you to quickly set the same property across all children of this Group, and any child Groups, to a new value.
*
* If this Group contains other Groups then the same property is set across their children as well, iterating down until it reaches the bottom.
* Unlike with Group.setAll the property is NOT set on child Groups itself.
*
* The operation parameter controls how the new value is assigned to the property, from simple replacement to addition and multiplication.
*
* @method Phaser.Group#setAllChildren
* @param {string} key - The property, as a string, to be set. For example: 'body.velocity.x'
* @param {*} value - The value that will be set.
* @param {boolean} [checkAlive=false] - If set then only children with alive=true will be updated. This includes any Groups that are children.
* @param {boolean} [checkVisible=false] - If set then only children with visible=true will be updated. This includes any Groups that are children.
* @param {number} [operation=0] - Controls how the value is assigned. A value of 0 replaces the value with the new one. A value of 1 adds it, 2 subtracts it, 3 multiplies it and 4 divides it.
* @param {boolean} [force=false] - If `force` is true then the property will be set on the child regardless if it already exists or not. If false and the property doesn't exist, nothing will be set.
*/
Phaser.Group.prototype.setAllChildren = function (key, value, checkAlive, checkVisible, operation, force) {
if (typeof checkAlive === 'undefined') { checkAlive = false; }
if (typeof checkVisible === 'undefined') { checkVisible = false; }
if (typeof force === 'undefined') { force = false; }
operation = operation || 0;
for (var i = 0, len = this.children.length; i < len; i++)
{
if ((!checkAlive || (checkAlive && this.children[i].alive)) && (!checkVisible || (checkVisible && this.children[i].visible)))
{
if (this.children[i] instanceof Phaser.Group)
{
this.children[i].setAllChildren(key, value, checkAlive, checkVisible, operation, force);
}
else
{
this.setProperty(this.children[i], key.split('.'), value, operation, force);
}
}
}
};
/**
* This function allows you to quickly check that the same property across all children of this Group is equal to the given value.
* This call doesn't descend down children, so if you have a Group inside of this Group, the property will be checked on the Group but not its children.
*
* @method Phaser.Group#checkAll
* @param {string} key - The property, as a string, to be set. For example: 'body.velocity.x'
* @param {*} value - The value that will be checked.
* @param {boolean} [checkAlive=false] - If set then only children with alive=true will be checked. This includes any Groups that are children.
* @param {boolean} [checkVisible=false] - If set then only children with visible=true will be checked. This includes any Groups that are children.
* @param {boolean} [force=false] - If `force` is true then the property will be checked on the child regardless if it already exists or not. If true and the property doesn't exist, false will be returned.
*/
Phaser.Group.prototype.checkAll = function (key, value, checkAlive, checkVisible, force) {
if (typeof checkAlive === 'undefined') { checkAlive = false; }
if (typeof checkVisible === 'undefined') { checkVisible = false; }
if (typeof force === 'undefined') { force = false; }
for (var i = 0, len = this.children.length; i < len; i++)
{
if ((!checkAlive || (checkAlive && this.children[i].alive)) && (!checkVisible || (checkVisible && this.children[i].visible)))
{
if (!this.checkProperty(this.children[i], key, value, force))
{
return false;
}
}
}
return true;
};
/**
* Adds the amount to the given property on all children in this Group.
* Group.addAll('x', 10) will add 10 to the child.x value.
*
* @method Phaser.Group#addAll
* @param {string} property - The property to increment, for example 'body.velocity.x' or 'angle'.
* @param {number} amount - The amount to increment the property by. If child.x = 10 then addAll('x', 40) would make child.x = 50.
* @param {boolean} checkAlive - If true the property will only be changed if the child is alive.
* @param {boolean} checkVisible - If true the property will only be changed if the child is visible.
*/
Phaser.Group.prototype.addAll = function (property, amount, checkAlive, checkVisible) {
this.setAll(property, amount, checkAlive, checkVisible, 1);
};
/**
* Subtracts the amount from the given property on all children in this Group.
* Group.subAll('x', 10) will minus 10 from the child.x value.
*
* @method Phaser.Group#subAll
* @param {string} property - The property to decrement, for example 'body.velocity.x' or 'angle'.
* @param {number} amount - The amount to subtract from the property. If child.x = 50 then subAll('x', 40) would make child.x = 10.
* @param {boolean} checkAlive - If true the property will only be changed if the child is alive.
* @param {boolean} checkVisible - If true the property will only be changed if the child is visible.
*/
Phaser.Group.prototype.subAll = function (property, amount, checkAlive, checkVisible) {
this.setAll(property, amount, checkAlive, checkVisible, 2);
};
/**
* Multiplies the given property by the amount on all children in this Group.
* Group.multiplyAll('x', 2) will x2 the child.x value.
*
* @method Phaser.Group#multiplyAll
* @param {string} property - The property to multiply, for example 'body.velocity.x' or 'angle'.
* @param {number} amount - The amount to multiply the property by. If child.x = 10 then multiplyAll('x', 2) would make child.x = 20.
* @param {boolean} checkAlive - If true the property will only be changed if the child is alive.
* @param {boolean} checkVisible - If true the property will only be changed if the child is visible.
*/
Phaser.Group.prototype.multiplyAll = function (property, amount, checkAlive, checkVisible) {
this.setAll(property, amount, checkAlive, checkVisible, 3);
};
/**
* Divides the given property by the amount on all children in this Group.
* Group.divideAll('x', 2) will half the child.x value.
*
* @method Phaser.Group#divideAll
* @param {string} property - The property to divide, for example 'body.velocity.x' or 'angle'.
* @param {number} amount - The amount to divide the property by. If child.x = 100 then divideAll('x', 2) would make child.x = 50.
* @param {boolean} checkAlive - If true the property will only be changed if the child is alive.
* @param {boolean} checkVisible - If true the property will only be changed if the child is visible.
*/
Phaser.Group.prototype.divideAll = function (property, amount, checkAlive, checkVisible) {
this.setAll(property, amount, checkAlive, checkVisible, 4);
};
/**
* Calls a function on all of the children that have exists=true in this Group.
* After the existsValue parameter you can add as many parameters as you like, which will all be passed to the child callback.
*
* @method Phaser.Group#callAllExists
* @param {function} callback - The function that exists on the children that will be called.
* @param {boolean} existsValue - Only children with exists=existsValue will be called.
* @param {...*} parameter - Additional parameters that will be passed to the callback.
*/
Phaser.Group.prototype.callAllExists = function (callback, existsValue) {
var args = Array.prototype.splice.call(arguments, 2);
for (var i = 0, len = this.children.length; i < len; i++)
{
if (this.children[i].exists === existsValue && this.children[i][callback])
{
this.children[i][callback].apply(this.children[i], args);
}
}
};
/**
* Returns a reference to a function that exists on a child of the Group based on the given callback array.
*
* @method Phaser.Group#callbackFromArray
* @param {object} child - The object to inspect.
* @param {array} callback - The array of function names.
* @param {number} length - The size of the array (pre-calculated in callAll).
* @protected
*/
Phaser.Group.prototype.callbackFromArray = function (child, callback, length) {
// Kinda looks like a Christmas tree
if (length == 1)
{
if (child[callback[0]])
{
return child[callback[0]];
}
}
else if (length == 2)
{
if (child[callback[0]][callback[1]])
{
return child[callback[0]][callback[1]];
}
}
else if (length == 3)
{
if (child[callback[0]][callback[1]][callback[2]])
{
return child[callback[0]][callback[1]][callback[2]];
}
}
else if (length == 4)
{
if (child[callback[0]][callback[1]][callback[2]][callback[3]])
{
return child[callback[0]][callback[1]][callback[2]][callback[3]];
}
}
else
{
if (child[callback])
{
return child[callback];
}
}
return false;
};
/**
* Calls a function on all of the children regardless if they are dead or alive (see callAllExists if you need control over that)
* After the method parameter and context you can add as many extra parameters as you like, which will all be passed to the child.
*
* @method Phaser.Group#callAll
* @param {string} method - A string containing the name of the function that will be called. The function must exist on the child.
* @param {string} [context=null] - A string containing the context under which the method will be executed. Set to null to default to the child.
* @param {...*} parameter - Additional parameters that will be passed to the method.
*/
Phaser.Group.prototype.callAll = function (method, context) {
if (typeof method === 'undefined')
{
return;
}
// Extract the method into an array
method = method.split('.');
var methodLength = method.length;
if (typeof context === 'undefined' || context === null || context === '')
{
context = null;
}
else
{
// Extract the context into an array
if (typeof context === 'string')
{
context = context.split('.');
var contextLength = context.length;
}
}
var args = Array.prototype.splice.call(arguments, 2);
var callback = null;
var callbackContext = null;
for (var i = 0, len = this.children.length; i < len; i++)
{
callback = this.callbackFromArray(this.children[i], method, methodLength);
if (context && callback)
{
callbackContext = this.callbackFromArray(this.children[i], context, contextLength);
if (callback)
{
callback.apply(callbackContext, args);
}
}
else if (callback)
{
callback.apply(this.children[i], args);
}
}
};
/**
* The core preUpdate - as called by World.
* @method Phaser.Group#preUpdate
* @protected
*/
Phaser.Group.prototype.preUpdate = function () {
if (!this.exists || !this.parent.exists)
{
this.renderOrderID = -1;
return false;
}
var i = this.children.length;
while (i--)
{
this.children[i].preUpdate();
}
return true;
};
/**
* The core update - as called by World.
* @method Phaser.Group#update
* @protected
*/
Phaser.Group.prototype.update = function () {
var i = this.children.length;
while (i--)
{
this.children[i].update();
}
};
/**
* The core postUpdate - as called by World.
* @method Phaser.Group#postUpdate
* @protected
*/
Phaser.Group.prototype.postUpdate = function () {
// Fixed to Camera?
if (this._cache[7] === 1)
{
this.x = this.game.camera.view.x + this.cameraOffset.x;
this.y = this.game.camera.view.y + this.cameraOffset.y;
}
var i = this.children.length;
while (i--)
{
this.children[i].postUpdate();
}
};
/**
* Allows you to obtain a Phaser.ArrayList of children that return true for the given predicate
* For example:
* var healthyList = Group.filter(function(child, index, children) {
* return child.health > 10 ? true : false;
* }, true);
* healthyList.callAll('attack');
* Note: Currently this will skip any children which are Groups themselves.
* @method Phaser.Group#filter
* @param {function} predicate - The function that each child will be evaluated against. Each child of the Group will be passed to it as its first parameter, the index as the second, and the entire child array as the third
* @param {boolean} [checkExists=false] - If set only children with exists=true will be passed to the callback, otherwise all children will be passed.
* @return {Phaser.ArrayList} Returns an array list containing all the children that the predicate returned true for
*/
Phaser.Group.prototype.filter = function(predicate, checkExists) {
var index = -1,
length = this.children.length,
result = new Phaser.ArrayList();
while(++index < length) {
var child = this.children[index];
if(!checkExists || (checkExists && child.exists)) {
if(predicate(child, index, this.children)) {
result.add(child);
}
}
}
return result;
};
/**
* Allows you to call your own function on each member of this Group. You must pass the callback and context in which it will run.
* After the checkExists parameter you can add as many parameters as you like, which will all be passed to the callback along with the child.
* For example: Group.forEach(awardBonusGold, this, true, 100, 500)
* Note: Currently this will skip any children which are Groups themselves.
*
* @method Phaser.Group#forEach
* @param {function} callback - The function that will be called. Each child of the Group will be passed to it as its first parameter.
* @param {Object} callbackContext - The context in which the function should be called (usually 'this').
* @param {boolean} [checkExists=false] - If set only children with exists=true will be passed to the callback, otherwise all children will be passed.
*/
Phaser.Group.prototype.forEach = function (callback, callbackContext, checkExists) {
if (typeof checkExists === 'undefined') { checkExists = false; }
var args = Array.prototype.splice.call(arguments, 3);
args.unshift(null);
for (var i = 0, len = this.children.length; i < len; i++)
{
if (!checkExists || (checkExists && this.children[i].exists))
{
args[0] = this.children[i];
callback.apply(callbackContext, args);
}
}
};
/**
* Allows you to call your own function on each member of this Group where child.exists=true. You must pass the callback and context in which it will run.
* You can add as many parameters as you like, which will all be passed to the callback along with the child.
* For example: Group.forEachExists(causeDamage, this, 500)
*
* @method Phaser.Group#forEachExists
* @param {function} callback - The function that will be called. Each child of the Group will be passed to it as its first parameter.
* @param {Object} callbackContext - The context in which the function should be called (usually 'this').
*/
Phaser.Group.prototype.forEachExists = function (callback, callbackContext) {
var args = Array.prototype.splice.call(arguments, 2);
args.unshift(null);
this.iterate('exists', true, Phaser.Group.RETURN_TOTAL, callback, callbackContext, args);
};
/**
* Allows you to call your own function on each alive member of this Group (where child.alive=true). You must pass the callback and context in which it will run.
* You can add as many parameters as you like, which will all be passed to the callback along with the child.
* For example: Group.forEachAlive(causeDamage, this, 500)
*
* @method Phaser.Group#forEachAlive
* @param {function} callback - The function that will be called. Each child of the Group will be passed to it as its first parameter.
* @param {Object} callbackContext - The context in which the function should be called (usually 'this').
*/
Phaser.Group.prototype.forEachAlive = function (callback, callbackContext) {
var args = Array.prototype.splice.call(arguments, 2);
args.unshift(null);
this.iterate('alive', true, Phaser.Group.RETURN_TOTAL, callback, callbackContext, args);
};
/**
* Allows you to call your own function on each dead member of this Group (where alive=false). You must pass the callback and context in which it will run.
* You can add as many parameters as you like, which will all be passed to the callback along with the child.
* For example: Group.forEachDead(bringToLife, this)
*
* @method Phaser.Group#forEachDead
* @param {function} callback - The function that will be called. Each child of the Group will be passed to it as its first parameter.
* @param {Object} callbackContext - The context in which the function should be called (usually 'this').
*/
Phaser.Group.prototype.forEachDead = function (callback, callbackContext) {
var args = Array.prototype.splice.call(arguments, 2);
args.unshift(null);
this.iterate('alive', false, Phaser.Group.RETURN_TOTAL, callback, callbackContext, args);
};
/**
* Call this function to sort the group according to a particular value and order.
* For example to depth sort Sprites for Zelda-style game you might call `group.sort('y', Phaser.Group.SORT_ASCENDING)` at the bottom of your `State.update()`.
*
* @method Phaser.Group#sort
* @param {string} [index='z'] - The `string` name of the property you want to sort on. Defaults to the objects z-depth value.
* @param {number} [order=Phaser.Group.SORT_ASCENDING] - The `Group` constant that defines the sort order. Possible values are Phaser.Group.SORT_ASCENDING and Phaser.Group.SORT_DESCENDING.
*/
Phaser.Group.prototype.sort = function (index, order) {
if (this.children.length < 2)
{
// Nothing to swap
return;
}
if (typeof index === 'undefined') { index = 'z'; }
if (typeof order === 'undefined') { order = Phaser.Group.SORT_ASCENDING; }
this._sortProperty = index;
if (order === Phaser.Group.SORT_ASCENDING)
{
this.children.sort(this.ascendingSortHandler.bind(this));
}
else
{
this.children.sort(this.descendingSortHandler.bind(this));
}
this.updateZ();
};
/**
* This allows you to use your own sort handler function.
* It will be sent two parameters: the two children involved in the comparison (a and b). It should return -1 if a > b, 1 if a < b or 0 if a === b.
*
* @method Phaser.Group#customSort
* @param {function} sortHandler - Your sort handler function. It will be sent two parameters: the two children involved in the comparison. It must return -1, 1 or 0.
* @param {object} context - The scope in which the sortHandler is called.
*/
Phaser.Group.prototype.customSort = function (sortHandler, context) {
if (this.children.length < 2)
{
// Nothing to swap
return;
}
this.children.sort(sortHandler.bind(context));
this.updateZ();
};
/**
* An internal helper function for the sort process.
*
* @method Phaser.Group#ascendingSortHandler
* @param {object} a - The first object being sorted.
* @param {object} b - The second object being sorted.
*/
Phaser.Group.prototype.ascendingSortHandler = function (a, b) {
if (a[this._sortProperty] < b[this._sortProperty])
{
return -1;
}
else if (a[this._sortProperty] > b[this._sortProperty])
{
return 1;
}
else
{
if (a.z < b.z)
{
return -1;
}
else
{
return 1;
}
}