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forEachDead is being called to little times

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I have this code:

console.log("top dead: " + this.topGrp.countDead()); // 3
                this.topGrp.forEachDead((child) => {
                    console.log("destroy top"); // only 2 times in chrome's console
                }, this);

topGrp is a group
the function countDead() returns 3, and then forEachDead is iterating only 2 time, I see this in the console and only 2 object in my game are destroyed...



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I suspect it has to do with the fact that you are destroying the children in the loop.

I haven't tested anything, but I'm reading through the code for Group.iterate ( and I see that they using a for loop that checks the length of Group.children after each iteration. Because you are destroying children in the loop, the length of Group.children changes, causing the iteration to quit prematurely. 

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You could also try iterating through the children in reverse and checking for alive/dead:

for(var i = this.topGrp.children.length-1; i >= 0; i--){

It'll run quicker and use less memory than building a second array.

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