-(void) ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event
{
CGPoint location = [touch locationInView:[touch view]];
location = [[CCDirector sharedDirector] convertToGL:location];
shootVector = ccpSub(location, cannon.position);
CGFloat shootAngle = ccpToAngle(shootVector);
cocosAngle = CC_RADIANS_TO_DEGREES(-1 * shootAngle);
CGFloat rotateDiff = cocosAngle;
if (rotateDiff > 180)
rotateDiff -= 360;
if (rotateDiff < -180)
rotateDiff += 360;
CGFloat rotateSpeed = 360;
rotateDuration = fabs(rotateDiff / rotateSpeed);
[cannon runAction:[CCSequence actions:
[CCRotateTo actionWithDuration:rotateDuration angle:cocosAngle],
[CCCallFunc actionWithTarget:nil selector:nil],
nil]];
top.rotation = cannon.rotation;
}
上記のコードでは、360 度移動したタッチで回転が発生します。代わりに、大砲を 180 度以下で回転させたい..
どんな助けでも大歓迎です。