User Moving while shooting projectiles

[francis]

i am experimenting on this open source app game with an old version of cocos2d

i have successfully inserted enemies and have collision detected also... now i want

is to put on some projectiles to make it look more awesome however i tried ray's tutorial

This one

but the projectiles still aren't shooting..

PS: my target is moving or jumping rather..

here is what i did:

-(void)TouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
   AtlasSpriteManager *spriteManager = (AtlasSpriteManager*)[self getChildByTag:kSpriteManager];
   AtlasSprite *bird = (AtlasSprite *) [spriteManager getChildByTag:kBird];

   UITouch *touch = [touches anyObject];
   CGPoint location = [touch locationInView:[touch view]];
   location = [[Director sharedDirector]convertCoordinate:location];

   CGSize winSize = [[Director sharedDirector]winSize];
   Sprite *projectile = [Sprite spriteWithFile:@"psn.png"];
   projectile.position = ccp(bird.position.y,bird.position.x);

   int offX = location.x - projectile.position.x;
   int offY = location.y - projectile.position.y;

   [self addChild:projectile];

   int realX = winSize.width + (projectile.contentSize.width/2);
   float ratio = (float) offY / (float) offX;
   int realY = (realX *ratio) + projectile.position.y;
   CGPoint realDest = ccp(realX, realY);

   int offRealX = realX - projectile.position.x;
   int offRealY = realY - projectile.position.y;
   float length = sqrtf((offRealX*offRealX)+(offRealY*offRealY));
   float velocity = 480/1;
   float realMoveDuration = length/velocity;

   [projectile runAction:[Sequence actions:[MoveTo actionWithDuration:realMoveDuration position:realDest],
                     [CallFuncN actionWithTarget:self selector:@selector(spriteMoveFinished:)], nil]];
}

i hope someone could help and that would be great