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Arcade Physics shutdown
will check to see if the world instance still exists and only try removing it if so. This prevents errors when stopping a world and then destroying it at a later date.
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@ -460,6 +460,12 @@ var ArcadePhysics = new Class({
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*/
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shutdown: function ()
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{
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if (!this.world)
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{
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// Already destroyed
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return;
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}
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var eventEmitter = this.systems.events;
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eventEmitter.off('update', this.world.update, this.world);
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