Lua FSM有限状态机的实现

最近做项目，因为要将游戏的代码基本全部改成lua的，对c#层面的东西基本只要unity的生命周期就可以了。刚开始接触lua，心痒痒，决定上网买了《Lua游戏AI开发指南》看看，决定实现一个fsm以便于在项目中使用。在这里贴出代码，其实代码都是直接抄这本书的。建议直接买书看，对于不想买书又想实现lua的状态机的可以直接拿下面的代码使用就可以了。

 

 1 Action = {}
 2 
 3 Action.Status = {
 4     RUNNING = "RUNNING",
 5     TERMINATED = "TERMINATED",
 6     UNINIIALIZED = "UNINIIALIZED"
 7 }
 8 
 9 Action.Type = "Action"
10 
11 
12 function Action.new(name,initializeFunction,updateFunction,cleanUpFunction,userData)
13 
14     local action = {}
15 
16     action.cleanUpFunction_ = cleanUpFunction
17     action.initializeFunction_ = initializeFunction
18     action.updateFunction_  = updateFunction
19     action.name_ = name or ""
20     action.status_ = Action.Status.UNINIIALIZED
21     action.type_ = Action.Type
22     action.userData_ = userData
23 
24     action.CleanUp = Action.CleanUp
25     action.Initialize = Action.Initialize
26     action.Update = Action.Update
27 
28     return action
29 end
30 
31 function Action.Initialize(self)
32     if self.status_ == Action.Status.UNINIIALIZED then
33         if self.initializeFunction_ then
34             self.initializeFunction_(self.userData_)
35         end
36     end
37 
38     self.status_ = Action.Status.RUNNING
39 end
40 
41 
42 function Action.Update(self,deltaTimeInMillis)
43     if self.status_ == Action.Status.TERMINATED then
44         return Action.Status.TERMINATED
45     elseif self.status_ == Action.Status.RUNNING then
46         if self.updateFunction_ then
47             self.status_ = self.updateFunction_(deltaTimeInMillis,self.userData_)
48 
49             assert(self.status_)
50         else
51             self.status_ = Action.Status.TERMINATED
52         end
53     end
54 
55     return self.status_
56 
57 end
58 function Action.CleanUp(self)
59     if self.status_ == Action.Status.TERMINATED then
60         if self.cleanUpFunction_ then
61             self.cleanUpFunction_(self.userData_)
62         end
63     end
64 
65     self.status_ = Action.Status.UNINIIALIZED
66 end

Action