一个简易的AVG游戏模板（python)

from tkinter import *

class Settings:
    WIDTH = 800
    HEIGHT = 600

class Game:
    def init(self):

        self.sm = StepMaster()

        textPage = TextPage(["难忘的小事","long time ago","there's a little girl"])
        textPage1 = TextPage(["suddenly a pig rushed out of the forest","then the pig hit a big tree and died","the hunter saw this.","He charried the dead pig to his village and feed his children."])
        imgPage = ImgPage("figures/scene1.gif")
        imgPage2 = ImgPage("figures/scene2.gif")
        imgPage3 = ImgPage("figures/scene3.gif")
        imgPage4 = ImgPage("figures/scene4.gif")

        step0 = Step(textPage,imgPage,None)
        step0.setConnections({"prev":0,"next":1})
        self.sm.addStep(step0)


        selBox = SelBox("which option will you choose?",["go back","kill it"])
        step1 = Step(textPage,imgPage,selBox)
        step1.setConnections({"prev":0,"next":-1,"1":0,"2":2})
        self.sm.addStep(step1)

        step2 = Step(None,imgPage2,None)
        step2.setConnections({"prev":1,"next":3})
        self.sm.addStep(step2)

        step3 = Step(textPage1,imgPage2,None)
        step3.setConnections({"prev":2,"next":4})
        self.sm.addStep(step3)


        selBox1 = SelBox("前方遭遇怪物，用什么职业出战？",["战士","法师","牧师","圣骑士"])
        step4 = Step(textPage1,imgPage2,selBox1)
        step4.setConnections({"prev":3,"next":-1,"1":5,"2":6,"3":4,"4":4})
        self.sm.addStep(step4)

        step5 = Step(None,imgPage3,None)
        step5.setConnections({"prev":4,"next":5})
        self.sm.addStep(step5)

        step6 = Step(None,imgPage4,None)
        step6.setConnections({"prev":4,"next":6})
        self.sm.addStep(step6)



        self.sm.start()
        tk = Tk()
        self.canvas = Canvas(tk,width=Settings.WIDTH,height=Settings.HEIGHT)
        self.paint()
        self.canvas.pack()
        self.canvas.bind_all('<KeyPress-Right>',self.keyPressed)
        self.canvas.bind_all('<KeyPress-Left>',self.keyPressed)
        self.canvas.bind_all('<KeyPress-Up>',self.keyPressed)
        self.canvas.bind_all('<KeyPress-Down>',self.keyPressed)

        tk.mainloop()


def paint(self):
        self.sm.paintCurrent(self.canvas)
        self.canvas.pack()

    def keyPressed(self,event):
        print(event.keysym)
        if event.keysym=="Left":
            self.sm.leftKeyPressed()
        elif event.keysym=="Right":
            self.sm.rightKeyPressed()
        elif event.keysym=="Up":
            self.sm.upKeyPressed()
        elif event.keysym=="Down":
            self.sm.downKeyPressed()

        self.paint()

class StepMaster:
    def __init__(self):
        self.current = -1
        self.steps = []
    def addStep(self,step):
        self.steps.append(step)
    def start(self):
        self.current = 0
    def paintCurrent(self,canvas):
        currentStep = self.steps[self.current]
        currentStep.paint(canvas)
    def currentStep(self):
        return self.steps[self.current]


    def leftKeyPressed(self):
        self.current = self.currentStep().prev()
    def rightKeyPressed(self):
        self.current = self.currentStep().next()
    def upKeyPressed(self):
        self.currentStep().up()
    def downKeyPressed(self):
        self.currentStep().down()

class Step:
    def __init__(self,textPage,imgPage,selBox):
        self.textPage = textPage
        self.imgPage = imgPage
        self.selBox = selBox
    def setConnections(self,connections):
        self.connections = connections
    def paint(self,canvas):
        if self.imgPage:
            self.imgPage.paint(canvas)
        if self.textPage:
            self.textPage.paint(canvas)
        if self.selBox:
            self.selBox.paint(canvas)

    def prev(self):
        return self.connections["prev"]
    def next(self):
        if not self.selBox:
            return self.connections["next"]
        return self.connections[self.selBox.getChosen()]
    def up(self):
        if self.selBox:
            self.selBox.optionUp()

    def down(self):
        if self.selBox:
            self.selBox.optionDown()




class TextPage:
    def __init__(self,contents):
        self.contents = contents
    def paint(self,canvas):
        print("textpage painted")
        j = Settings.HEIGHT*0.05
        for line in self.contents:
            canvas.create_text(0.5*Settings.WIDTH,j,text=line,fill="white")
            j+=0.08*Settings.HEIGHT

class ImgPage:
    def __init__(self,imgPath):
        self.imgPath = imgPath;
    def paint(self,canvas):
        print("imgpage painted")
        self.img = PhotoImage(file=self.imgPath)
        canvas.create_image(0,0,anchor=NW,image=self.img)

class SelBox:
    sbImg = None
    def __init__(self,question,options):
        self.question = question
        self.options = options
        self.chosen = 0
    def paint(self,canvas):
        print("selbox painted")
        if not SelBox.sbImg:
            SelBox.sbImg = PhotoImage(file = "figures/selbox.gif")
        canvas.create_image(0,400,anchor=NW,image=SelBox.sbImg)
        canvas.create_text(0.5*Settings.WIDTH,420,text=self.question)
        j = 450+self.chosen*40
        canvas.create_rectangle(0.1*Settings.WIDTH,j,0.9*Settings.WIDTH,j+20,fill="yellow")
        j = 460
        for option in self.options:
            canvas.create_text(0.5*Settings.WIDTH,j,text=option)
            j+=40
    def getChosen(self):
        return str(self.chosen+1)

    def optionUp(self):
        if self.chosen > 0:
            self.chosen-=1

    def optionDown(self):
        if self.chosen < len(self.options) - 1:
            self.chosen+=1


def main():
    game = Game()
    game.init()


main()

这个小程序是打算用于教学中的。学生只需要修改Game类的init方法，将定制的文本（TextPage)，图片(ImgPage），还有选择栏（SelBox）组合成一个步(Step)对象，然后将Step交由StepMaster对象管理。Step对象需要设置步间跳转关系connecions，使得步与步之间可以有序跳转。


游戏的结构就是以步为基本单位，设置好跳转关系的步之间，可以根据SelBox的选项进行跳转，如当前步没有SelBox，则根据默认的翻页键跳转。

整个游戏就是一个交互式的电子小说，有图片，有文字，读者可以通过选择控制情节进展。


另：
1.文本默认是居中对齐，颜色为白色
2.图片必须是800*600的gif
3.选择栏选项一般不多于4个
4.音效模块并未实现

游戏界面：丑是丑了点，毕竟这么几行代码。。。（有同学能把界面调美观的直接满分~)
[img]http://dl2.iteye.com/upload/attachment/0100/7618/164a5c78-85b9-3fed-9aa4-eefec1733ce0.png[/img]