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Refactored original getClosestTo and getFurthestFrom functions to include optional filter callback. Removed the getClosestToFilter and getFurthestFromFilter.

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This commit is contained in:
Mike Headley 2016-06-20 14:07:12 -07:00
parent 3ef8e5011b
commit 2e91588f87
1 changed files with 17 additions and 95 deletions
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112
src/core/Group.js
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@ -2207,7 +2207,7 @@ Phaser.Group.prototype.getBottom = function () {
};
/**
* Get the closest child to given Object.
* Get the closest child to given Object, with optional callback to filter children.
*
* This can be a Sprite, Group, Image or any object with public x and y properties.
*
@ -2217,12 +2217,17 @@ Phaser.Group.prototype.getBottom = function () {
* @param {any} object - The object used to determine the distance. This can be a Sprite, Group, Image or any object with public x and y properties.
* @return {any} The child closest to given object, or null if no child was found.
*/
Phaser.Group.prototype.getClosestTo = function (object) {
Phaser.Group.prototype.getClosestTo = function (object, callback, callbackContext) {
var distance = Number.MAX_VALUE;
var tempDistance = 0;
var result = null;
if (!callback)
{
callback = function() {return true;};
}
for (var i = 0; i < this.children.length; i++)
{
var child = this.children[i];
@ -2231,7 +2236,7 @@ Phaser.Group.prototype.getClosestTo = function (object) {
{
tempDistance = Math.abs(Phaser.Point.distance(object, child));
if (tempDistance < distance)
if (tempDistance < distance && callback.call(callbackContext, child, tempDistance))
{
distance = tempDistance;
result = child;
@ -2244,112 +2249,29 @@ Phaser.Group.prototype.getClosestTo = function (object) {
};
/**
* Get the closest child to given Object that satisfies the filter criteria.
*
* This can be a Sprite, Group, Image or any object with public x and y properties.
*
* 'close' is determined by the distance from the objects `x` and `y` properties compared to the childs `x` and `y` properties.
*
* If filter returns true, the object is considered for closeness. If filter is null, then any child will satisfy the criteria.
*
* @method Phaser.Group#getClosestToFilter
* @param {any} object - The object used to determine the distance. This can be a Sprite, Group, Image or any object with public x and y properties.
* @param {function} filter - The function that each child will be evaluated against. Each child of the group will be passed to it as its first parameter, with the distance as the second.
* @return {any} The child closest to given object that satisfies the filter criteria, or null if no child was found.
*/
Phaser.Group.prototype.getClosestToFilter = function (object, filter) {
var distance = Number.MAX_VALUE;
var tempDistance = 0;
var result = null;
var _filter = filter;
if (_filter === null || _filter === undefined)
{
_filter = function() {return true;};
}
for (var i = 0; i < this.children.length; i++)
{
var child = this.children[i];
if (child.exists)
{
tempDistance = Math.abs(Phaser.Point.distance(object, child));
if (tempDistance < distance && _filter(child, tempDistance))
{
distance = tempDistance;
result = child;
}
}
}
return result;
};
/**
* Get the child furthest away from the given Object.
* Get the child furthest away from the given Object, with optional callback to filter children.
*
* This can be a Sprite, Group, Image or any object with public x and y properties.
*
* 'furthest away' is determined by the distance from the objects `x` and `y` properties compared to the childs `x` and `y` properties.
*
* If callback returns true, the object is considered for distance. If callback is null, then any child will satisfy the criteria.
*
* @method Phaser.Group#getFurthestFrom
* @param {any} object - The object used to determine the distance. This can be a Sprite, Group, Image or any object with public x and y properties.
* @param {function} [callback=null] - The function that each child will be evaluated against. Each child of the group will be passed to it as its first parameter, with the distance as the second.
* @param {object} [callbackContext] - The context in which the function should be called (usually 'this').
* @return {any} The child furthest from the given object, or null if no child was found.
*/
Phaser.Group.prototype.getFurthestFrom = function (object) {
Phaser.Group.prototype.getFurthestFrom = function (object, callback, callbackContext) {
var distance = 0;
var tempDistance = 0;
var result = null;
for (var i = 0; i < this.children.length; i++)
if (!callback)
{
var child = this.children[i];
if (child.exists)
{
tempDistance = Math.abs(Phaser.Point.distance(object, child));
if (tempDistance > distance)
{
distance = tempDistance;
result = child;
}
}
}
return result;
};
/**
* Get the child furthest away from the given Object that satisfies the filter criteria.
*
* This can be a Sprite, Group, Image or any object with public x and y properties.
*
* 'furthest away' is determined by the distance from the objects `x` and `y` properties compared to the childs `x` and `y` properties.
*
* If filter returns true, the object is considered for closeness. If filter is null, then any child will satisfy the criteria.
*
* @method Phaser.Group#getFurthestFrom
* @param {any} object - The object used to determine the distance. This can be a Sprite, Group, Image or any object with public x and y properties.
* @param {function} filter - The function that each child will be evaluated against. Each child of the group will be passed to it as its first parameter, with the distance as the second.
* @return {any} The child furthest from the given object, or null if no child was found.
*/
Phaser.Group.prototype.getFurthestFromFilter = function (object, filter) {
var distance = 0;
var tempDistance = 0;
var result = null;
var _filter = filter;
if (_filter === null || _filter === undefined)
{
_filter = function() {return true;};
callback = function() {return true;};
}
for (var i = 0; i < this.children.length; i++)
@ -2360,7 +2282,7 @@ Phaser.Group.prototype.getFurthestFromFilter = function (object, filter) {
{
tempDistance = Math.abs(Phaser.Point.distance(object, child));
if (tempDistance > distance && _filter(child, tempDistance))
if (tempDistance > distance && callback.call(callbackContext, child, tempDistance))
{
distance = tempDistance;
result = child;