setting animation to pull

Hi guys,
perhaps you could help me with this. I am trying to get my player to animation on up and down, stop movements.


The code, to me, seems fine, does not crash my game. I pretty much followed easy to learn steps but nothing yet.

function playerClass::setCurrentAnimation(%this)
{
	%yVelocity = $PlayerShip.getlinearVelocityY();
		
	if (%yVelocity < 0)
	{
	$PlayerShip.playAnimation(playerShipUp_Animation);
	return;
	}
	
	else if (%yVelocity > 0)
	{
	$PlayerShip.playAnimation(playerShipDown_Animation);
	return;
	}
	
	else if (%yVelocity = 0)
	{
	$PlayerShip.playAnimation(playerShipFlat_Animation);
	return;
	}
}

I have placed a %this.setCurrentAnimation in the onUpdate function, also tried it with a setCurrentAnimation call in the function playerUp, down etc.


Here is the full code.

function playerClass::onLevelLoaded(%this, %scenegraph)
{
    $PlayerShip = %this;
	
    moveMap.bindCmd(keyboard, "left", "playerLeft();", "playerLeftStop();");
    moveMap.bindCmd(keyboard, "right", "playerRight();", "playerRightStop();");
	moveMap.bindCmd(keyboard, "up", "playerUp();", "playerUpStop();");
	moveMap.bindCmd(keyboard, "down", "playerDown();", "playerDownStop();");

	%this.enableUpdateCallback();
	
}

function playerClass::onUpdate(%this)
{
   %this.updateHorizontal();
   %this.updateVertical();
   %this.setCurrentAnimation();
  
}


function playerLeft()
{
    $PlayerShip.moveLeft = true;
    %this.UpdateHorizontal();
}

function playerLeftStop()
{
    $PlayerShip.moveLeft = false;
    $PlayerShip.UpdateHorizontal();
}

function playerRight()
{
    $PlayerShip.moveRight = true;
    $PlayerShip.UpdateHorizontal();
}

function playerRightStop()
{
    $PlayerShip.moveRight = false;
    $PlayerShip.UpdateHorizontal();
}

function playerUp()
{
	$PlayerShip.moveUp = true;
	$PlayerShip.UpdateVertical();
	
}

function playerUpStop()
{
	$PlayerShip.moveUp = false;
	$PlayerShip.UpdateVertical();
	$PlayerShip.setCurrentAnimation();
}

function playerDown()
{
	$PlayerShip.moveDown = true;
	$PlayerShip.UpdateVertical();
	$PlayerShip.setCurrentAnimation();
}	

function playerDownStop()
{
	$PlayerShip.moveDown = false;
	$PlayerShip.UpdateVertical();
	$PlayerShip.setCurrentAnimation();
}	


function playerClass::updateHorizontal(%this)    
{    
   if ($PlayerShip.moveLeft == $PlayerShip.moveRight)    
   {    
      $PlayerShip.setLinearVelocityX(20);    
      return;    
   }    
       
   else if ($PlayerShip.moveLeft)    
      {    
         $PlayerShip.setLinearVelocityX(-20);    
         return;    
      }    
       
    
   else if ($PlayerShip.moveRight)    
    {       
         $PlayerShip.setLinearVelocityX(40);    
         return;    
     }    
       
}  

function playerClass::updateVertical(%this)
{
  if ($PlayerShip.moveUp == $PlayerShip.moveDown)
  {
     $PlayerShip.setLinearVelocityY(0);
     return;
  }

  else if ($PlayerShip.moveUp)
     {
        $PlayerShip.setLinearVelocityY(-30);
        return;
     }


  else if (%this.moveDown)
   {
        $PlayerShip.setLinearVelocityY(30);
        return;
    }

}

function playerClass::setCurrentAnimation(%this)
{
	%yVelocity = $PlayerShip.getlinearVelocityY();
		
	if (%yVelocity < 0)
	{
	$PlayerShip.playAnimation(playerShipUp_Animation);
	return;
	}
	
	else if (%yVelocity > 0)
	{
	$PlayerShip.playAnimation(playerShipDown_Animation);
	return;
	}
	
	else if (%yVelocity = 0)
	{
	$PlayerShip.playAnimation(playerShipFlat_Animation);
	return;
	}
}