プログレスバー

//initの処理
CCProgressTimer *timer = [CCProgressTimer progressWithSprite:[CCSprite spriteWithFile:@"test.png"]];
timer.type = kCCProgressTimerTypeRadial;
timer.percentage = 100;
timer.position = ccp(winSize.width/2, winSize.height/2);
[self addChild:timer z:2 tag:123];
[self scheduleUpdate];


- (void) update:(ccTime)delta {
    CCProgressTimer *timer = (CCProgressTimer*)[self getChildByTag:123];
    timer.percentage -= delta * 150;
    if (timer.percentage <= 0) {
        timer.percentage = 100;
    }
}