How to auto animate character movement - unreal engine 4?

Need help with character movement engine in flash cs4 with as2.0 thanks :)?

• Whats wrong? onClipEvent(load){ rightspeed = 0; leftspeed = 0; jump = 0; } onClipEvent(enterFrame){ if(Key.isDown(Key.RIGHT)){ rightspeed = rightspeed + 10; } rightspeed = rightspeed - 2.5; this._x = rightspeed; } onClipEvent(enterFrame){ if(Key.isDown(Key.LEFT)){ leftspeed = leftspeed + 10; } leftspeed = leftspeed - 2.5; this._x -= leftspeed; } }else if(Key.isDown(Key.UP)){ this._y -= 3.5; }

• Answer:

  What does it do? The only thing I would add is this._x = ((rightspeed - 2.5)>0)?rightspeed - 2.5:0; and this._x = ((leftspeed - 2.5)>0)?leftspeed - 2.5:0; This is a short circuit evaluation if/else: if the math is > 0, apply it, otherwise set it to zero. Otherwise it will begin applying negative numbers to the position, taking it off the state - maybe that's what's wrong. Use trace('message') to debug, see documentation. trace('rightspeed is ' + rightspeed);