zombiescape.py

def start_node(possessions):
    print 'there are zombies following you!!'
    print 'pick one: go \"left\" or go \"right\" '
    direction = raw_input('>')
    if direction == "left" : 
        chainsaw_node("start_node",possessions)
    elif direction == "right" : 
        key_node("start_node",possessions)
    else : 
        print 'dude .. theres zombies on our tail .. type correct or u r one dead meat !!'
        start_node(possessions)
        
def chainsaw_node(src,possessions):
    if src == "start_node" : 
        print 'you see a chainsaw and pick it up' 
        possessions[0] = 1
        print 'there are two doors: one on the right and one straight ahead'
        print 'options: \"straight\",\"back\",\"right\" ' 
        direction = raw_input('>')
        if direction == "straight" : 
            passage_node("chainsaw_node",possessions)
        elif direction == "right" : 
            key_node("chainsaw_node",possessions)
        elif direction == "back" : 
            start_node(possessions)	
        else : 
            print 'dude .. theres zombies on our tail .. type correct or u r one dead meat !!'
            chainsaw_node("start_node",possessions)
            
    elif src == "key_node" : 
        if possessions[0] != 1:
            print 'you see a chainsaw and pick it up' 
            possessions[0] = 1
        else:
            pass
            
        print 'there are two doors: one on the right and one on the left'
        print 'options: \"left\",\"right\",\"back\" ' 
        direction = raw_input('>')
        
        if direction == "left" : 
            start_node(possessions)
        elif direction == "right" : 
            passage_node("chainsaw_node",possessions)
        elif direction == "back" : 
            key_node("chainsaw_node",possessions)	
        else : 
            print 'dude .. theres zombies on our tail .. type correct or u r one dead meat !!'
            chainsaw_node("key_node",possessions)
            
    elif src == "passage_node":
        if possessions[0] != 1:
            print 'you see a chainsaw and pick it up'
            possessions[0] = 1
        else: 
            pass 
        
        print 'there are 2 doors: \"left\" and \"straight\" ahead'
        direction = raw_input('>')
        
        if direction == "left" : 
            key_node("chainsaw_node",possessions)
        elif direction == "straight" : 
            start_node(possessions)
        else : 
            print 'dude .. theres zombies on our tail .. type correct or u r one dead meat !!'
            chainsaw_node("passage_node",possessions)
    else:
        print 'wrong destination !!'

def key_node(src,possessions):
    if possessions[1] == 0 :
        print 'you see a key lying on a table and pick it up'
        possessions[1] = 1 
    else :
        pass
    
    if src == "start_node":
        print 'you see a door \"straight\" ahead and a door on your \"left\" '
        direction = raw_input('>')
        if direction == "straight": 
            passage_node("key_node",possessions)
        elif direction == "left" : 
            chainsaw_node("key_node",possessions)
        else : 
            print 'wrong direction !! '
    
    elif src == "chainsaw_node" : 
        print 'you see a door on your \"right\" and a door on your \"left\" '
        direction = raw_input('>')
        if direction == "right":
            start_node(possessions)
        elif direction == "left" : 
            passage_node("key_node",possessions)
        else : 
            print 'wrong option typed'
    
    elif src == "passage_node" :
        print 'you see a door \"straight\" ahead, a door on your \"right\" or go \"back\"'
        direction = raw_input('>')
        if direction == "straight" :
            start_node(possessions)
        elif direction == "right" : 
            chainsaw_node("key_node", possessions)
        elif direction == "back" : 
            passage_node("key_node",possessions)
        else:
            print 'wrong option dude !!!'
            key_node("passage_node",possessions)
        
    else:
        pass
        
def passage_node(src,possessions):

    if src == "key_node" : 
        print 'you see a door on your \"right\" and a passage \"straight\" ahead'
        direction = raw_input('>')
        if direction == "right" :
            boss_node(possessions)
        elif direction == "straight" :
            chainsaw_node("passage_node",possessions)
        else:
            print 'wrong argument !!'
            passage_node("key_node",possessions)
    elif src == "chainsaw_node" : 
        print 'you see a door on your \"left\" and a passage \"straight\" ahead'	
        direction = raw_input('>')
        if direction == "left" :
            boss_node(possessions)
        elif direction == "straight" :
            key_node("passage_node",possessions)
        else :
            print 'wrong option typed !!'	
            passage_node("chainsaw_node",possessions)
    
    elif src == "boss_node" :
        print 'the passage leads to either \"left\" or \"right\" '
        direction = raw_input('>')
        if direction == "left" :
            key_node("passage_node",possessions)
        elif direction == "right" : 
            chainsaw_node("passage_node",possessions)
        else : 
            print 'wrong option typed !!'
            passage_node("boss_node",possessions)
    
    else :
        pass
        
def boss_node(possessions):
    print 'what the hell !! .. a zombie facing you and the locked escape door right behind !!'
    if possessions[0] == 1 :
        print 'you take your chainsaw and cut the zombie\'s stupid head .. bloody !!'
        if possessions[1] == 1:
            print 'you unlock the door and escape to your freedom !!!'
            print 'you won !!!'
        else :
            print 'what the hell!! .. you dont have key to the locked door !!'
            print 'go back and get the key !!'
            passage_node("boss_node",possessions)
    else :
        print 'you dont have a weapon to defend yourself and you become dead meat .. :( '
        print 'game over' 
        
# main program 
print 'Wel come to zombiescape !!'
# initialize a list 
possessions = [0,0]
start_node(possessions)

This is a small game where you try to escape from the zombies following you.