У меня есть это:
CGPoint vel = hudLayer.rightJoystick.velocity;
CCBullet* sp = [CCBullet spriteWithFile:@"green.png"];
sp.position = player.position;
[self addChild:sp z:-10];
vel = ccpMult(ccpNormalize(vel), 300);
sp.rotation = //how to get the rotation out of the velocity?
Любая помощь?