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Learning iPhone Game Development with Cocos2D 3.0 by Kirill Muzykov

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Time for action – aiming at the touch position

Now that we can point where to shoot, let's make the hunter to aim at this point.

  1. Open the Hunter.h file and add the aimAtPoint: method declaration:
    #import "CCSprite.h"
    
    @interface Hunter : CCSprite
    
    -(void)aimAtPoint:(CGPoint)point;
    
    @end
  2. Then, open the Hunter.m file and add the following methods below the init method:
    -(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 ...

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