Hi, I’m trying to make a custom class for collision detection, this is what I’ve got so far.
package
{
/**
* ...
* @author Santiago
*/
import flash.display.DisplayObject;
import flash.display.BitmapData;
public class CustomCollision
{
public function CustomCollision()
{
}
public function isColliding(target1:DisplayObject,target2:DisplayObject):Boolean
{
var target1BitmapData:BitmapData = new BitmapData(target1.parent.width, target1.parent.height, true, 0);
var target2BitmapData:BitmapData = target1BitmapData.clone();
// Dibujar en los bitmaps data
target1BitmapData.draw(target1, null, null, null, null, false);
target2BitmapData.draw(target2, null, null, null, null, false);
trace(target1.transform.matrix.tx);
trace(target1.transform.matrix.ty);
return(true);
//dispose de los bitmaps dara
}
}
}
This does nothing so far, because I get this error:
“”[Fault] exception, information=TypeError: Error #1009: Cannot access a property or method of a null object reference.
Fault, Main() at Main.as:163"
This happens when I do:
var colisionSantiago:CustomCollision;
var paraNada:Boolean = colisionSantiago.isColliding(movie1, movie2);
where movie1 and movie2 are two movieClips recently added to the stage, so they must have a parent, but somehow it doesn’t work.
I started doing my own class after getting the same error with this class: http://labs.boulevart.be/index.php/2007/06/08/skinner-collision-detection-in-as3 and ironically I’m stuck with the same error. I’m using flashdevelop 3.1.1 and the flex sdk 3.5 for compiling. Any ideas?.
