There are some actions that let you compose actions.
Sequence action
Spawn action
Repeat action
RepeatForever action
Sequence 順序
順序Action能夠讓你創建一系列的動作，這些動作將會按著順序被執行。
Example:
id action1 = [MoveTo actionWithDuration:2 position:ccp(100,100)];
id action2 = [MoveBy actionWithDuration:2 position: ccp(80,80)];
id action3 = [MoveBy actionWithDuration:2 position: ccp(0,80)];
[sprite runAction: [Sequence actions:action1, action2, action3, nil]];
The action1 will be executed first. When action1 finishes, then action2 will be executed. And when action2 finishes, only then action3will be executed.
*IMPORTANT:* The inner actions should have a non infinity time (eg: You can't add a RepeatForever action in a Sequence action).
Action1 將會被首先執行，當action1執行結束，action2將會被執行，當action2結束，是action3。
注意：這個action不能是一個無限的時間。例如，你不能增加一個重復到永遠的action到這個順序action裡面。
Spawn 並發？
這個action使得你可以在同一個時間運行多個action。這個動做的持續時間是子action的最長時間。
id action = [Spawn actions:
[JumpBy actionWithDuration:2 position:ccp(300,0) height:50 jumps:4],
[RotateBy actionWithDuration: 2 angle: 720],nil];
[sprite runAction:action];
Repeat 重復
這個重復Action可以讓你有限次數的重復一個動作。 Example:
id a1 = [MoveBy actionWithDuration:1 position:ccp(150,0)];
id action1 = [Repeat actionWithAction:
[Sequence actions: [Place actionWithPosition:ccp(60,60)], a1, nil]times:3];
[sprite runAction:action1];
RepeatForever 永遠重復
永遠重復這個動作是一個特殊的action，它將會一直持續下去。因為它的時間是無法測量的。
Example:
id a1 = [MoveBy actionWithDuration:1 position:ccp(150,0)];
id action2 = [RepeatForever actionWithAction:
[Sequence actions: [[a1 copy] autorelease], [a1 reverse], nil] ];
[sprite runAction:action2];
注意：永遠重復的這個action不是一個有效的IntervalAction，他不能被放置在一個序列action裡面。
出處：http://alexliu.cnblogs.com/
