Detecting Mouse Direction

programming flash
1

Hey, I’m having a problem when detecting the direction of the mouse.

I’m using the following script:


[COLOR=#0000ff]stop[/COLOR][COLOR=#000000]([/COLOR][COLOR=#000000])[/COLOR];
[COLOR=#808080]*//*[/COLOR]
[COLOR=#000000]**var**[/COLOR] old_x:[COLOR=#0000ff]Number[/COLOR] = [COLOR=#0000ff]this[/COLOR].[COLOR=#0000ff]_xmouse[/COLOR];
[COLOR=#000000]**var**[/COLOR] old_y:[COLOR=#0000ff]Number[/COLOR] = [COLOR=#0000ff]this[/COLOR].[COLOR=#0000ff]_ymouse[/COLOR];
[COLOR=#808080]*//*[/COLOR]
[COLOR=#000000]**function**[/COLOR] getDir[COLOR=#000000]([/COLOR][COLOR=#000000])[/COLOR]:[COLOR=#0000ff]Void[/COLOR] [COLOR=#000000]{[/COLOR]
    [COLOR=#000000]**var**[/COLOR] new_x:[COLOR=#0000ff]Number[/COLOR] = [COLOR=#0000ff]this[/COLOR].[COLOR=#0000ff]_xmouse[/COLOR];
    [COLOR=#000000]**var**[/COLOR] new_y:[COLOR=#0000ff]Number[/COLOR] = [COLOR=#0000ff]this[/COLOR].[COLOR=#0000ff]_ymouse[/COLOR];
    new_x > old_x ? [COLOR=#0000ff]trace[/COLOR][COLOR=#000000]([/COLOR][COLOR=#ff0000]"moving right"[/COLOR][COLOR=#000000])[/COLOR] : [COLOR=#0000ff]trace[/COLOR][COLOR=#000000]([/COLOR][COLOR=#ff0000]"moving left"[/COLOR][COLOR=#000000])[/COLOR];
    new_y > old_y ? [COLOR=#0000ff]trace[/COLOR][COLOR=#000000]([/COLOR][COLOR=#ff0000]"moving down"[/COLOR][COLOR=#000000])[/COLOR] : [COLOR=#0000ff]trace[/COLOR][COLOR=#000000]([/COLOR][COLOR=#ff0000]"moving up"[/COLOR][COLOR=#000000])[/COLOR];
    old_x = new_x;
    old_y = new_y;
[COLOR=#000000]}[/COLOR]
[COLOR=#808080]*//*[/COLOR]
[COLOR=#0000ff]this[/COLOR].[COLOR=#0000ff]onMouseMove[/COLOR] = getDir;

But for some reason I’m not getting any output. Any help would be much appreciated.

Thanks.

2

Tested the AS and it works just fine for me… just keep the mouse off of the output panel.

3

it works fine for me too:)

4

Well I’m not sure what the problem was but yesterday I was using my uncles PC but now I am home the scripts works perfectly. However I am now having another problem. Here is the script I used on the first frame:

stop();
var old_x:Number = this._xmouse;
function getDir():Void {
    var new_x:Number = this._xmouse;
    new_x > old_x ? dir="right" : dir="left";
    old_x = new_x;
}
this.onMouseMove = getDir;

And here is the code I have used on one of my movieclips:

onClipEvent(enterFrame){
 this._x = _root._xmouse;
 this._y = _root._ymouse;
 if(_root.dir = "left"){
  this._xscale = -100; }
 if(_root.dir = "right"){
  this._xscale = 100; }
  trace(_root.dir);
 }

All I get is “right” being displayed?

5

because youre only tracing the right

see:
http://www.n99creations.com/?pID=tutorials&col=Blue&tut=basics_of_actionscript_for_flash&p=1&l=Flash_MX_04

though I dont doubt you know that already, just in case:)

6

I thought the problem was that I am seeting the variable inside of a function.

function getDir():Void {
    var new_x:Number = this._xmouse;
    new_x > old_x ? dir = "right" : dir="left";
    old_x = new_x;
}

When I enter trace(dir); outside of the function it returns undefined. However inside of the function and it operates correctly.

I haven’t used flash for about a year, but from what I remember I thought I needed to set it as a global var but still it returns undefined outside of the function.