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Feature: Allow random generator to get/set state

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This commit is contained in:
luckylooke 2015-09-02 21:22:52 +02:00
parent 37fc327ea7
commit 63f5df9c65
1 changed files with 26 additions and 2 deletions
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28
src/math/RandomDataGenerator.js
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@ -18,7 +18,7 @@
*
* @class Phaser.RandomDataGenerator
* @constructor
* @param {any[]} [seeds] - An array of values to use as the seed.
* @param {any[]|String} [seeds] - An array of values to use as the seed or a generator state (from {#state}).
*/
Phaser.RandomDataGenerator = function (seeds) {
@ -48,7 +48,11 @@ Phaser.RandomDataGenerator = function (seeds) {
*/
this.s2 = 0;
this.sow(seeds);
if((typeof seeds === 'string' || seeds instanceof String) && seeds.match(/^!rnd/)){
this.state(seeds);
}else{
this.sow(seeds);
}
};
@ -298,6 +302,26 @@ Phaser.RandomDataGenerator.prototype = {
return this.integerInRange(-180, 180);
},
/**
* Sets or gets state of the generator
*
* @method Phaser.RandomDataGenerator#state
* @param {String} [state] Generator state to be set.
* @return {String} Actual generator state.
*/
state: function (state) {
if(state){
state = state.split(',');
this.c = parseFloat(state[1]);
this.s0 = parseFloat(state[2]);
this.s1 = parseFloat(state[3]);
this.s2 = parseFloat(state[4]);
}
return ['!rnd', this.c, this.s0, this.s1, this.s2].join(',');
}
};