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Thread: setting RollOver fns on dynamic MCs, within a loop

  1. #1
    Member
    Join Date
    Apr 2003
    Location
    LA, CA
    Posts
    36

    [resolved] setting RollOver fns on dynamic MCs, within a loop

    Something is amiss.

    I have duplicated MCs, using loaded data and a loop. When the "spot" in the MC is rolled over, two text boxes appear. They vanish on rollout. Well, that's the idea.

    It works if I do the following script minus the loop... with just say, i=1. But when I loop it, the "spots" in the different MCs don't make visible their own text boxes... they all trigger the same one: the last one. (Actually, they attempt to trigger one after the last one, if there were another. I had to mess around a lot before I figured that much out. That's why "(i-1)" is there instead of "i", so I could see what was happening.)

    I assume I can't set this up this way then. How would I achieve the same effect? Thanks for any ideas...

    Code:
    varReceiver = new LoadVars();
    varReceiver.load("fetchmapdata.php"); 
    varReceiver.onLoad = function(){
    	var numspotsVar = this.numspots;
       for (var i = 0; i < numspotsVar; i++) {
             duplicateMovieClip("textbox", "textbox"+i, i);
             _root["textbox"+i]._x = this["xx"+i];
             _root["textbox"+i]._y = this["yy"+i];
             _root["textbox"+i].DyText.text = this["textVar"+i];
    	 _root["textbox"+i].DateText.text = this["dateVar"+i];
    	 _root["textbox"+i].DyText.autoSize = "center";
    	 _root["textbox"+i].DyText.background = true;
    	 _root["textbox"+i].DyText.backgroundColor = 0xaaccdd;
    	 _root["textbox"+i].DyText.wordWrap = true;
    	 _root["textbox"+i].DyText._visible = false;
    	 _root["textbox"+i].DateText.background = true;
    	 _root["textbox"+i].DateText.backgroundColor = 0xaaccdd;
    	 _root["textbox"+i].DateText._visible = false;
    	 _root["textbox"+i].spot.onRollOver = function () {
    		 _root["textbox"+(i-1)].DyText._visible = true;
    		 _root["textbox"+(i-1)].DateText._visible = true;
    	 }
    	 _root["textbox"+i].spot.onRollOut = function () {
    		 _root["textbox"+(i-1)].DyText._visible = false;
    		 _root["textbox"+(i-1)].DateText._visible = false;
    	 }
       }
    }
    Last edited by hermie; 08-07-2004 at 01:18 PM.

  2. #2
    Flash Student rabidlemming's Avatar
    Join Date
    Mar 2003
    Location
    UK
    Posts
    382
    hi,

    Try this and see if it works:

    Code:
    varReceiver = new LoadVars();
    varReceiver.load("fetchmapdata.php");
    varReceiver.onLoad = function() {
    	var numspotsVar = this.numspots;
    	for (var i = 0; i<numspotsVar; i++) {
    		duplicateMovieClip("textbox", "textbox"+i, i);
    		this["textbox"+i]._x = this["xx"+i];
    		this["textbox"+i]._y = this["yy"+i];
    		this["textbox"+i].DyText.text = this["textVar"+i];
    		this["textbox"+i].DateText.text = this["dateVar"+i];
    		this["textbox"+i].DyText.autoSize = "center";
    		this["textbox"+i].DyText.background = true;
    		this["textbox"+i].DyText.backgroundColor = 0xaaccdd;
    		this["textbox"+i].DyText.wordWrap = true;
    		this["textbox"+i].DyText._visible = false;
    		this["textbox"+i].DateText.background = true;
    		this["textbox"+i].DateText.backgroundColor = 0xaaccdd;
    		this["textbox"+i].DateText._visible = false;
    		this["textbox"+i].spot.onRollOver = function() {
    			this["textbox"+(i-1)].DyText._visible = true;
    			this["textbox"+(i-1)].DateText._visible = true;
    		};
    		this["textbox"+i].spot.onRollOut = function() {
    			this["textbox"+(i-1)].DyText._visible = false;
    			this["textbox"+(i-1)].DateText._visible = false;
    		};
    	}
    };
    Cheers
    Rabid Lemming

    I will wait for death with a smile and a big stick

  3. #3
    Senior Member chi-styler's Avatar
    Join Date
    Jul 2001
    Location
    Bristol, UK
    Posts
    1,237
    As you guessed your problem is with i, as when one of your rollovers is executed the loop has finished and i is numspotsVar.

    You need a dynamic reference to each MCs number, or in your case, just this
    code:

    _root["textbox"+i].spot.onRollOver = function() {
    this._parent.DyText._visible = true;
    this._parent.DateText._visible = true;
    };
    _root["textbox"+i].spot.onRollOut = function() {
    this._parent.DyText._visible = false;
    this._parent.DateText._visible = false;
    };


    as 'this' within the function refers to each MCs spot, then use _parent to go up one to the MC itself.

  4. #4
    Member
    Join Date
    Apr 2003
    Location
    LA, CA
    Posts
    36
    Excellent! Thanks for the clear explanation too... now I've got a handle on what's going on.

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