Animation sa doors

- (void) goToNextRoomThroughDoor {
    UIButton * doorButton = self.lastDoorTapped;
    float scale = 6.5;

    // store center point of the door to be animated
    self.lastDoorCenterPoint = CGPointMake(doorButton.center.x, doorButton.center.y);

    // translation points
    int door1x = -1000;
    int door1y = -2500;
    int door2x = -2850;
    int door2y = -2500;
    int door3x = -4700;
    int door3y = -2500;

    // move door
    [UIView animateWithDuration:0.3 animations:^{
        if (self.buttonDoor1 == doorButton) {
            doorButton.transform = CGAffineTransformMakeTranslation(-doorButton.frame.size.width, 0);
        } else if (self.buttonDoor2 == doorButton) {
            doorButton.transform = CGAffineTransformMakeTranslation(0, -doorButton.frame.size.height);
        } else {
            doorButton.transform = CGAffineTransformMakeTranslation(doorButton.frame.size.width, 0);
        }
    } completion:^(BOOL finished) {
        // zoom
        [UIView animateWithDuration:0.5 animations:^{
            float width = self.view.frame.size.width;
            float height = self.view.frame.size.height;

            // transform
            self.view.transform = CGAffineTransformScale(CGAffineTransformIdentity, scale, scale);

            // zoom to specific area
            if (self.buttonDoor1 == doorButton) {
                self.view.frame = CGRectMake(door1x, door1y, width * scale, height * scale);
            } else if (self.buttonDoor2 == doorButton) {
                self.view.frame = CGRectMake(door2x, door2y, width * scale, height * scale);
            } else {
                self.view.frame = CGRectMake(door3x, door3y, width * scale, height * scale);
            }
        } completion:^(BOOL finished) {
            [self goToNextRoom];
        }];
    }];
}