Actionscript Enterframe Movement
- by David
I am trying to make accelerated movement, but I am running into a problem that, for the life of me, I cannot understand.
My class definition:
public class Player extends MovieClip
{
private var stageRef:Stage;
private var key:KeyObject;
private var acceleration:int = .5;
private var curSpeed:int = 0;
public function Player(stageRef:Stage)
{
this.stageRef = stageRef;
addEventListener(Event.ENTER_FRAME, enterFrame);
key = new KeyObject(stageRef);
}
public function enterFrame(e:Event) : void
{
if(key.isDown(key.RIGHT)) {
x += 5;
}
}
}
This works to move my position in the x direction at a constant rate.
However, if I change enterFrame to
public function enterFrame(e:Event) : void
{
if(key.isDown(key.RIGHT)) {
x += acceleration;
}
}
No movement occurs.
Is there something going on in the event I do not understand?
Why is it that I can have x increased by a constant value but not a constant value as defined in a variable in the class?
Is it a scope issue?
