cocos2d for android - 점점 빠르게, 점점 느리게 레이어를 이동

static class SpriteEase extends SpriteDemo {

        public void onEnter() {

            super.onEnter();

            CGSize s = CCDirector.sharedDirector().winSize();

            CCIntervalAction move = CCMoveBy.action(3, CGPoint.make(s.width-130,0));

            CCIntervalAction move_back = move.reverse();

            // 점점 느리게

            CCIntervalAction move_ease_in = CCEaseIn.action(move.copy(), 3.0f);

            CCIntervalAction move_ease_in_back = move_ease_in.reverse();

            // 점점 빠르게

            CCIntervalAction move_ease_out = CCEaseOut.action(move.copy(), 3.0f);

            CCIntervalAction move_ease_out_back = move_ease_out.reverse();

            CCIntervalAction delay = CCDelayTime.action(0.25f);

            CCIntervalAction seq1 = CCSequence.actions(move, delay, move_back, delay.copy());

            CCIntervalAction seq2 = CCSequence.actions(move_ease_in, delay.copy(), move_ease_in_back, delay.copy());

            CCIntervalAction seq3 = CCSequence.actions(move_ease_out, delay.copy(), move_ease_out_back, delay.copy());

            CCAction a2 = grossini.runAction(CCRepeatForever.action(seq1));

            a2.setTag(1);

            CCAction a1 = tamara.runAction(CCRepeatForever.action(seq2));

            a1.setTag(1);

            CCAction a = kathia.runAction(CCRepeatForever.action(seq3));

            a.setTag(1);

            schedule("testStopAction", 6.25f);

        }

        public void testStopAction(float dt) {

            unschedule("testStopAction");

            tamara.stopAction(1);

            kathia.stopAction(1);

            grossini.stopAction(1);

        }

        public String title() {

            return "EaseIn - EaseOut - Stop";

        }

    }