zpc_ct/lib/FSM.py

import StatesProg
   
#====================================
class Transition(object):
    def __init__(self, toState):
        self.toState = toState
    def Execute(self):
        pass
                        
#===================================
                        
class FSM(object):
    def __init__ (self, character, owner):
        self.char = character
        self.states = {}
        self.transitions = {}
        self.curState = None
        self.prevState = None
        self.trans = None
        self.stateLife = 0
        self.owner = owner
        self.name = None
        self.last_state_notes = None
        
    def AddTransition(self, transName, transition):
        self.transitions[transName] = transition
    
    def AddState(self, stateName, state):
        self.states[stateName] = state
        self.states[stateName].name = state        
        
    def SetState(self, stateName):
        self.prevState = self.curState
        self.curState = self.states[stateName]
        
    def ToTransition(self, toTrans):
        self.trans = self.transitions[toTrans]
        
    def Execute(self, owner):
        if (self.trans):
            self.owner = owner
            self.curState.Exit()
            self.trans.Execute()
            self.SetState(self.trans.toState)
            self.curState.Enter()
            self.trans = None        
            
        self.curState.Execute()    
                
#====================================

Char = type("Char",(object,),{})

#===================================
          

#=================================== 

class ProgFSM(Char):
    def __init__(self, owner):
        self.FSM = FSM(self, owner)
        self.owner = owner
        
        state_list = [
        'Example',
        'Main',
        'Startup',
        'Intro',
        'LoadDefault',
        'PadPlayer',
        'SeqPlayer',
        'SelectSound',
        'SelectPattern',
        'EditSoundSequence',
        'EditSong',
        'Util', 
        'File',
        'Ball',
        'Clock',
        'Exit',
        'SelTheme',
        'OpenSong',
        'EnterText'
        ]
        
        for s in state_list:
            self.FSM.AddState(s, getattr(StatesProg, s)(self.FSM))
            t = 'to' + s
            self.FSM.AddTransition(t, Transition(s))
        
        if self.FSM.curState == None:
            self.FSM.SetState('Startup')
    
    def Execute(self):
        self.FSM.Execute(self.owner)    

#===================================