less speed because of a lot of child

[parsihaa]

hello.
I have an movieClip form an array named object1 and another movieClip from another array named object2 and if object1 hit object2, both will remove.
my code is like this:

var object1:Array = new Array;
var object2:Array = new Array;
for (var f:uint = 0; f < object1.length; f++)
{
 for (var i:uint = 0; i < object2.length; i++)
 {
  if (object1[f].hitTestObject(object2[i]))
  {
   if (stage.contains(object1[f]))
   {
    removeChild(object1[f]);
   }
   if (stage.contains(object2[i]))
   {
    removeChild(object2[i]);
   }
  }
 }
}

but my problem is when the two child from 2 arrays (object1 & object2) removeChild from stage they will be invisible not remove and functions for them won't be stop. so when the children increase to 100 or more stage speed slow down (because of huge number of children is stage). If anyone knows a solution for this please notice me.

[Biodiscus]

throw a object2[i].removeEventListener(....); in it. BTW if you want to use alot of objects on stage, but it lags flash. Try to use Stage3D (Molehill)

[ASWC]

the contains method is very slow and expensive. Never use it especially in a loop.

[henke37]

Start by never using the contains method, it is never the condition that you really care about.

As for the issue, you should indeed start removing stuff from the arrays.

function removeFromVector(v,e):void {
var pos:int=v.indexOf(e);
if(p<0) throw new ArgumentError("E was not in v!");
v.splice(p,1);
}

[parsihaa]

thanks for reply. but I can't understand the code you gave me. if you can give me an example with my arrays name and hitTestObject, It will really help me to find the way to use your code.

[parsihaa]

Any suggestion how to remove specific child in arrays instead of removeChild???

[dmb85]

The code henke posted is what you want (except the variable "p" needs to be "pos"). You find the index of the item in the array, then use the splice method on the array to remove that item.

To use it, you'd write:

try{
      removeFromVector(yourArrayName, theItemToRemove);
} catch(err:ArgumentError){
      //put any code that should happen here if the item is not found in the array
}

[parsihaa]

I used the code you said but It didn't work because I don't know how to use it yet. so if someone can notice my mistake in the code I wrote here, It will really help me with removing child in array (my array name is enemys1 and I want remove child when child.live is less than 0)

for (var e1:uint = 0; e1 < enemys1.length; e1++)
{
 if (enemys1[e1].live <= 0)
 {
  try
  {
   removeFromVector(enemys1, e);
  }
  catch (err:ArgumentError)
  {
   trace("E was not in v!");
  }
  function removeFromVector(enemys1,e):void
  {
   var pos:int = enemys1.indexOf(e);
   if (pos < 0)
   {
    throw new ArgumentError("E was not in v!");
   }
   enemys1.splice(pos,1);
  }
 }
}