player animation in behavior

/if (!isObject(MovementBehavior))
{
   %template = new BehaviorTemplate(MovementBehavior);
  
   %template.friendlyName = "Movement Behavior";
   %template.behaviorType = "Movement Styles";
   %template.description  = "Shooter style movement control";
  
   %template.addBehaviorField(upKey, "Key to bind to upward movement", keybind, "keyboard up");
   %template.addBehaviorField(downKey, "Key to bind to downward movement", keybind, "keyboard down");
   %template.addBehaviorField(leftKey, "Key to bind to left movement", keybind, "keyboard left");
   %template.addBehaviorField(rightKey, "Key to bind to right movement", keybind, "keyboard right");	
   %template.addBehaviorField(spaceKey, "Key to bind fire of guns", keybind, "keyboard space");

  
   %template.addBehaviorField(verticalSpeed, "Speed when moving vertically", float, 20.0);
   %template.addBehaviorField(horizontalSpeed, "Speed when moving horizontally", float, 20.0);
}

function MovementBehavior::onBehaviorAdd(%this)
{
   if (!isObject(moveMap))
   return;
  
   %this.owner.enableUpdateCallback();
  
   // bind our keys to the keyboard
   moveMap.bindObj(getWord(%this.upKey, 0), getWord(%this.upKey, 1), "moveUp", %this);
   moveMap.bindObj(getWord(%this.downKey, 0), getWord(%this.downKey, 1), "moveDown", %this);
   moveMap.bindObj(getWord(%this.leftKey, 0), getWord(%this.leftKey, 1), "moveLeft", %this);
   moveMap.bindObj(getWord(%this.rightKey, 0), getWord(%this.rightKey, 1), "moveRight", %this);
  
   // set the default values to 0
   %this.up = 0;
   %this.down = 0;
   %this.left = 0;
   %this.right = 0;
}

function MovementBehavior::onBehaviorRemove(%this)
{
   if (!isObject(moveMap))
   return;
   %this.owner.disableUpdateCallback();
  
   // remove the keybinds
   moveMap.unbindObj(getWord(%this.upKey, 0), getWord(%this.upKey, 1), %this);
   moveMap.unbindObj(getWord(%this.downKey, 0), getWord(%this.downKey, 1), %this);
   moveMap.unbindObj(getWord(%this.leftKey, 0), getWord(%this.leftKey, 1), %this);
   moveMap.unbindObj(getWord(%this.rightKey, 0), getWord(%this.rightKey, 1), %this);
  
   %this.up = 0;
   %this.down = 0;
   %this.left = 0;
   %this.right = 0;
   
}
  
function MovementBehavior::updateMovement(%this)
{
   // make the player move
   %this.owner.setLinearVelocityX((%this.right - %this.left) * %this.horizontalSpeed);
   %this.owner.setLinearVelocityY((%this.down - %this.up) * %this.verticalSpeed);
  
}
  

  
function MovementBehavior::moveUp(%this, %val)
{
   %this.up = %val;
   %this.updateMovement();
}
  
function MovementBehavior::moveDown(%this, %val)
{
   %this.down = %val;
   %this.updateMovement();
}
  
function MovementBehavior::moveLeft(%this, %val)
{
   %this.left = %val;
   %this.updateMovement();
}
  
function MovementBehavior::moveRight(%this, %val)
{
   %this.right = %val;
   %this.updateMovement();
}




function MovementBehavior::onUpdate(%this)
{
   %this.setCurrentAnimation();
}
  



function MovementBehavior::setCurrentAnimation(%this)
{
  
   %yVelocity = %this.getLinearVelocityY();

  
   
   if(%yVelocity < 0)
      {
         %this.playAnimation(PlayerUpAnimation);
         return;
      }
	  
	if(%yVelocity > 0)
	{
	%this.playAnimation(PlayerDownAnimation);
	return;
	}
	
	if (%yVelocity = 0)
	{
	%this.playAnimation(PlayerFlyAnimation);
	return;
	}  
	 
}