Created
October 1, 2011 03:02
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requestAnimationFrame support for ImpactJS
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From 205a52304f57df249a17d839ae92d50ff3a70f46 Mon Sep 17 00:00:00 2001 | |
From: KirbySaysHi <kirbysayshi@gmail.com> | |
Date: Fri, 30 Sep 2011 22:57:21 -0400 | |
Subject: [PATCH] requestAnimationFrame. disable by setting ig.system.raf to | |
false. | |
--- | |
lib/impact/impact.js | 14 +++++++++++++- | |
lib/impact/system.js | 20 +++++++++++++++++--- | |
2 files changed, 30 insertions(+), 4 deletions(-) | |
diff --git a/lib/impact/impact.js b/lib/impact/impact.js | |
index 2d42dce..c1e3578 100644 | |
--- a/lib/impact/impact.js | |
+++ b/lib/impact/impact.js | |
@@ -55,7 +55,19 @@ Function.prototype.bind = function(bind) { | |
}; | |
}; | |
+// ----------------------------------------------------------------------------- | |
+// requestAnimationFrame polyfill, paul irish. | |
+window.requestAnimFrame = (function(){ | |
+ return window.requestAnimationFrame || | |
+ window.webkitRequestAnimationFrame || | |
+ window.mozRequestAnimationFrame || | |
+ window.oRequestAnimationFrame || | |
+ window.msRequestAnimationFrame || | |
+ function(/* function */ callback, /* DOMElement */ element){ | |
+ window.setTimeout(callback, 1000 / 60); | |
+ }; | |
+})(); | |
// ----------------------------------------------------------------------------- | |
// ig Namespace | |
diff --git a/lib/impact/system.js b/lib/impact/system.js | |
index 7c2ac2d..6df229f 100644 | |
--- a/lib/impact/system.js | |
+++ b/lib/impact/system.js | |
@@ -14,11 +14,12 @@ ig.System = ig.Class.extend({ | |
realWidth: 320, | |
realHeight: 240, | |
scale: 1, | |
+ raf: true, | |
tick: 0, | |
- intervalId: 0, | |
newGameClass: null, | |
running: false, | |
+ intervalId: 0, | |
delegate: null, | |
clock: null, | |
@@ -76,15 +77,24 @@ ig.System = ig.Class.extend({ | |
stopRunLoop: function() { | |
- clearInterval( this.intervalId ); | |
this.running = false; | |
+ if(this.raf !== true){ | |
+ clearInterval( this.intervalId ); | |
+ } | |
}, | |
startRunLoop: function() { | |
this.stopRunLoop(); | |
- this.intervalId = setInterval( this.run.bind(this), 1000 / this.fps ); | |
+ | |
+ this.run = this.run.bind(this); | |
this.running = true; | |
+ | |
+ if(this.raf !== true){ | |
+ this.intervalId = setInterval(this.run, 1000 / this.fps); | |
+ } else { | |
+ this.run(); | |
+ } | |
}, | |
@@ -105,6 +115,10 @@ ig.System = ig.Class.extend({ | |
this.setGameNow( this.newGameClass ); | |
this.newGameClass = null; | |
} | |
+ | |
+ if( this.raf === true && this.running === true ){ | |
+ requestAnimFrame( this.run, this.canvas ); | |
+ } | |
}, | |
-- | |
1.7.4.4 | |
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