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Thread: Delete Object from Array

  1. #1
    Junior Member
    Join Date
    Dec 2011
    Location
    India
    Posts
    28

    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!

  2. #2
    Will moderate for beer
    Join Date
    Apr 2007
    Location
    Austin, TX
    Posts
    6,801
    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.

  3. #3
    Junior Member
    Join Date
    Mar 2012
    Posts
    8
    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
    Last edited by alexAAA; 05-26-2012 at 11:32 AM.

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