[MX04]changing variable without telling it to

[shavingcream]

i have an mc (base) that when clicked on generates another mc(unit) and you can control that newly generated mc with the arrow keys. but everytime i click the base mc the next unit that comes out moves faster.. any ideas why?

radius=10;
var number = 1;
power = 2;
function Move(){
    if(Key.isDown(Key.LEFT)){
        _root["unit"+number]._x-=power;
        _root["unit"+number].gotoAndStop(2);
    }
    else
    if(Key.isDown(Key.RIGHT)){
        _root["unit"+number]._x+=power;
        _root["unit"+number].gotoAndStop(4);
    }
    else
    if(Key.isDown(Key.UP)){
        _root["unit"+number]._y-=power;
        _root["unit"+number].gotoAndStop(1);
    }
    else
    if(Key.isDown(Key.DOWN)){
        _root["unit"+number]._y+=power;
        _root["unit"+number].gotoAndStop(5);
    }
}
base.onPress=function(){
    number++;
    MainT.duplicateMovieClip("unit"+number, number);
    _root["unit"+number]._x = base._x;
    _root["unit"+number]._y = base._y;
    _root["unit"+number].onEnterFrame = function(){
        Move();
        if(rock.hitTest(this._x, this._y+radius, true))this._y-=power;
        if(rock.hitTest(this._x, this._y-radius, true))this._y+=power;
           if(rock.hitTest(this._x-radius, this._y, true))this._x+=power;
        if(rock.hitTest(this._x+radius, this._y, true))this._x-=power;
    }

} 

[shavingcream]

bump

[Kostas Zotos]

Hi,

I think is more reliable to check for keyboard events using a keyListener instead of checking in the "onEnterFrame" event..

The alternative code (just uses a keyListener to check for key events) is:

radius=10; 
var number = 1; 
power = 2; 

//------------------- KEY CHECKING ----------------------------

var keyListener=new Object()  // Create a new Listener object

keyListener.onKeyDown=function (){ 
    if(Key.isDown(Key.LEFT)){ 
        _root["unit"+number]._x-=power; 
        _root["unit"+number].gotoAndStop(2); 
    } 
    if(Key.isDown(Key.RIGHT)){ 
        _root["unit"+number]._x+=power; 
        _root["unit"+number].gotoAndStop(4); 
    } 
    if(Key.isDown(Key.UP)){ 
        _root["unit"+number]._y-=power; 
        _root["unit"+number].gotoAndStop(1); 
    } 
    if(Key.isDown(Key.DOWN)){ 
        _root["unit"+number]._y+=power; 
        _root["unit"+number].gotoAndStop(5); 
    } 
} 

Key.addListener(keyListener)

//------------------- KEY CHECKING (END) ------------------------


base.onPress=function(){ 
    number++; 
    MainT.duplicateMovieClip("unit"+number, number); 
    _root["unit"+number]._x = base._x; 
    _root["unit"+number]._y = base._y; 
    
   _root["unit"+number].onEnterFrame = function(){ 
        if(rock.hitTest(this._x, this._y+radius, true))this._y-=power; 
        if(rock.hitTest(this._x, this._y-radius, true))this._y+=power; 
        if(rock.hitTest(this._x-radius, this._y, true))this._x+=power; 
        if(rock.hitTest(this._x+radius, this._y, true))this._x-=power; 
    } 

} 

Kostas

[shavingcream]

thanks, that makes the speed stay at a constant but the unit mc won't move when the key is held, only when the key is pressed

[Kostas Zotos]

Hello,

don't mention it

..but the unit mc won't move when the key is held, only when the key is pressed

(When say "held" mean to press the key and keep it i suppose..)

Strange.. I use the above code with simple movies (in order to produce similar conditions) and seems to work.. I mean that while the key is pressed (is down) the "unit" duplicated files are moving..