#import "CCSprite.h"

@interface Hunter : CCSprite

-(void)aimAtPoint:(CGPoint)point;

@end

-(CGPoint)torsoCenterInWorldCoordinates
{
  //1
  CGPoint torsoCenterLocal =
    ccp(_torso.contentSize.width / 2.0f,      
        _torso.contentSize.height / 2.0f);

  //2
  CGPoint torsoCenterWorld = 
    [_torso convertToWorldSpace:torsoCenterLocal];
  return torsoCenterWorld;
}

-(float)calculateTorsoRotationToLookAtPoint:
   (CGPoint)targetPoint
{
  //1
  CGPoint torsoCenterWorld = 
    [self torsoCenterInWorldCoordinates];
  //2
  CGPoint pointStraightAhead = 
    ccp(torsoCenterWorld.x + 1.0f,
        torsoCenterWorld.y);
  //3
  CGPoint forwardVector = 
    ccpSub(pointStraightAhead, torsoCenterWorld);
    
  //4
  CGPoint...