Delete Object from Array

Hi!
I have many objects(movieclips) on my stage and I put them in an array

Actionscript Code:

for(var i = 0; i<numChildren; i++)
            {
                if(getChildAt(i) is MC)
                {
                    mcarray.push(getChildAt(i));
                }
            }

so I can do a hittest on them.

then when I go to the next level (let's say from level 1 to level 2) there are again multiple objects from the class MC that go into that array. i believe that the objects from level 1 are still in my 'mcarray'. how can i remove just the ones from level 1?

each time i go to another level the game lags more and more and i really need to fix that.

thanks for the help!

If you want mcarray to only contain stuff from the new level, you can either remove everything from it:

Code:

---

while (mcarray.length > 0){
  mcarray.pop();
}

---

Or, if you don't need mcarray to point to the same actual array, you can just set it to a new empty array:

Code:

---

mcarray = [];

---

If mcarray contains things you need to keep, then you'll need a way of determining whether to keep or discard an object.

Code:

---

for (var i:int = mcarray.length-1; i >=0; i--){
  if (shouldDiscard(mcarray[i])){
    mcarray.splice(i, 1);
  }
}

---

where you need to define the shouldDiscard function.

i'd do it like this:
delete the whole array and in the next frame put the same code...i've seen it on a tutorial for beginners somewhere. not sure how to explain it though.
sorry, i can't seem to find it but it was somewehere on here:
http://www.newgrounds.com/bbs/forum/2
you should take a look at the tutorials