俄罗斯方块

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多平台的一次作业，使用wxpython实现俄罗斯方块。

代码改编自http://zetcode.com/wxpython/thetetrisgame/

代码如下：

# -*- coding: utf-8 -*-

import wx
import random
import os
import sys

SPEED = 300
selectDifficulty = 101

class Tetris(wx.Frame):
    
    def __init__(self, parent, title):
        wx.Frame.__init__(self, parent, title=title, size=(324, 684))
        
        self.icon = wx.Icon(name="icon.ico", type=wx.BITMAP_TYPE_ICO)
        self.SetIcon(self.icon)
        
        self.menuBar = wx.MenuBar()
        
        self.menu1 = wx.Menu()
        self.menu1.Append(wx.ID_EXIT, u"退出(&X)")
        self.Bind(wx.EVT_MENU, self.OnClose, id=wx.ID_EXIT)
        self.menu1.Append(501, u"重新开始(&R)")
        self.Bind(wx.EVT_MENU, self.OnRestart, id=501)
        self.menu1.Append(502, u"查看耗时(需要先暂停游戏)")
        self.Bind(wx.EVT_MENU, self.OnCostTime, id=502)
        self.menuBar.Append(self.menu1, u"开始(&F)")
        self.menuBar.Enable(502, False)    
        
        self.menu2 = wx.Menu()
        self.menu2.Append(101, u"简单\tCtrl+1", u"", wx.ITEM_RADIO)
        self.menu2.Append(102, u"中等\tCtrl+2", u"", wx.ITEM_RADIO)
        self.menu2.Append(103, u"困难\tCtrl+3", u"", wx.ITEM_RADIO)
        self.Bind(wx.EVT_MENU_RANGE, self.OnDifficulty, id=101, id2=103)
        self.menuBar.Append(self.menu2, u"难度(&D)") 
        global selectDifficulty
        self.menuBar.Check(selectDifficulty, True)
          
        self.menu3 = wx.Menu()
        self.menu3.Append(301, u"程序信息(&I)\tF1")
        self.Bind(wx.EVT_MENU, self.OnAbout, id=301)
        self.menu3.Append(302, u"帮助(&H)\tF2")
        self.Bind(wx.EVT_MENU, self.OnHelp, id=302)
        self.menuBar.Append(self.menu3, u"关于(&A)")
           
        self.SetMenuBar(self.menuBar)

        self.statusbar = self.CreateStatusBar()
        self.statusbar.SetStatusText('0')
        self.board = Board(self)
        self.board.SetFocus()
        self.board.start()

        self.Centre()
        self.Show(True)
    
    def OnDifficulty(self, evt):
        number = evt.GetId()
        global SPEED
        global selectDifficulty
        if number == 101:
            SPEED = 300
            selectDifficulty = 101
        elif number == 102:
            SPEED = 200
            selectDifficulty = 102
        else:
            SPEED = 100
            selectDifficulty = 103
        Tetris(None, title='Tetris')
        self.Destroy()  
    
    def OnRestart(self, evt):     
        Tetris(None, title='Tetris')
        self.Destroy()
    
    def OnCostTime(self, evt): # 查看耗时
        wx.MessageBox(u'您已经坚持了 %.1f 秒'%(1.0 * self.board.costTime * self.board.Speed / 1000),
           u"用时", wx.OK | wx.ICON_INFORMATION, self)
    
    def OnAbout(self, evt): 
        wx.MessageBox(u"16级第7次上机练习(WX)\n俄罗斯方块",
            u"16Lab7(WX)", wx.OK | wx.ICON_INFORMATION, self)
    
    def OnHelp(self, evt): 
        wx.MessageBox(u"按P暂停\n按D加速下落\n按空格直接落下", u"帮助", wx.OK | wx.ICON_INFORMATION, self)
    
    def OnClose(self, evt):
        self.Close()
    
    
class Board(wx.Panel):
    
    BoardWidth = 10
    BoardHeight = 22
    Speed = 300
    ID_TIMER = 1
    costTime = 0
    
    def __init__(self, parent): 
        wx.Panel.__init__(self, parent, style=wx.WANTS_CHARS)
        global SPEED
        Board.Speed = SPEED
        
        self.initBoard()
        
    def initBoard(self):    
        
        Board.costTime = 0
        self.timer = wx.Timer(self, Board.ID_TIMER)
        self.isWaitingAfterLine = False
        self.curPiece = Shape()
        self.nextPiece = Shape()
        self.curX = 0
        self.curY = 0
        self.numLinesRemoved = 0
        self.board = []

        self.isStarted = False
        self.isPaused = False

        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)
        self.Bind(wx.EVT_TIMER, self.OnTimer, id=Board.ID_TIMER)

        self.clearBoard()

    def shapeAt(self, x, y):
        
        return self.board[(y * Board.BoardWidth) + x]

    def setShapeAt(self, x, y, shape):
        
        self.board[(y * Board.BoardWidth) + x] = shape

    def squareWidth(self):
        
        return self.GetClientSize().GetWidth() / Board.BoardWidth

    def squareHeight(self):
        
        return self.GetClientSize().GetHeight() / Board.BoardHeight

    def start(self):
        
        if self.isPaused:
            return

        self.isStarted = True
        self.isWaitingAfterLine = False
        self.numLinesRemoved = 0
        self.clearBoard()

        self.newPiece()
        self.timer.Start(Board.Speed)

    def pause(self):
        
        if not self.isStarted:
            return

        self.isPaused = not self.isPaused
        statusbar = self.GetParent().statusbar
    
        if self.isPaused:
            self.GetParent().GetMenuBar().Enable(502, True)
        else:
            self.GetParent().GetMenuBar().Enable(502, False)    
        
        if self.isPaused:
            self.timer.Stop()
            statusbar.SetStatusText('paused')
        else:
            self.timer.Start(Board.Speed)
            statusbar.SetStatusText(str(self.numLinesRemoved))

        self.Refresh()

    def clearBoard(self):
        
        for i in range(Board.BoardHeight * Board.BoardWidth):
            self.board.append(Tetrominoes.NoShape)

    def OnPaint(self, event):

        dc = wx.PaintDC(self)        

        size = self.GetClientSize()
        boardTop = size.GetHeight() - Board.BoardHeight * self.squareHeight()
        
        for i in range(Board.BoardHeight):
            for j in range(Board.BoardWidth):
                shape = self.shapeAt(j, Board.BoardHeight - i - 1)
                if shape != Tetrominoes.NoShape:
                    self.drawSquare(dc,
                        0 + j * self.squareWidth(),
                        boardTop + i * self.squareHeight(), shape)

        if self.curPiece.shape() != Tetrominoes.NoShape:
            for i in range(4):
                x = self.curX + self.curPiece.x(i)
                y = self.curY - self.curPiece.y(i)
                self.drawSquare(dc, 0 + x * self.squareWidth(),
                    boardTop + (Board.BoardHeight - y - 1) * self.squareHeight(),
                    self.curPiece.shape())


    def OnKeyDown(self, event):
        
        if not self.isStarted or self.curPiece.shape() == Tetrominoes.NoShape:
            event.Skip()
            return

        keycode = event.GetKeyCode()

        if keycode == ord('P') or keycode == ord('p'):
            self.pause()
            return
        if self.isPaused:
            return
        elif keycode == wx.WXK_LEFT:
            self.tryMove(self.curPiece, self.curX - 1, self.curY)
        elif keycode == wx.WXK_RIGHT:
            self.tryMove(self.curPiece, self.curX + 1, self.curY)
        elif keycode == wx.WXK_DOWN:
            self.tryMove(self.curPiece.rotatedRight(), self.curX, self.curY)
        elif keycode == wx.WXK_UP:
            self.tryMove(self.curPiece.rotatedLeft(), self.curX, self.curY)
        elif keycode == wx.WXK_SPACE:
            self.dropDown()
        elif keycode == ord('D') or keycode == ord('d'):
            self.oneLineDown()
        else:
            event.Skip()


    def OnTimer(self, event):
        
        if event.GetId() == Board.ID_TIMER:
            if self.isWaitingAfterLine:
                self.isWaitingAfterLine = False
                self.newPiece()
            else:
                self.oneLineDown()
        else:
            event.Skip()

        Board.costTime += 1
    
    def dropDown(self):
        
        newY = self.curY
        
        while newY > 0:
            if not self.tryMove(self.curPiece, self.curX, newY - 1):
                break
            newY -= 1

        self.pieceDropped()

    def oneLineDown(self):
        
        if not self.tryMove(self.curPiece, self.curX, self.curY - 1):
            self.pieceDropped()
            

    def pieceDropped(self):
        
        for i in range(4):
            x = self.curX + self.curPiece.x(i)
            y = self.curY - self.curPiece.y(i)
            self.setShapeAt(x, y, self.curPiece.shape())

        self.removeFullLines()

        if not self.isWaitingAfterLine:
            self.newPiece()


    def removeFullLines(self):
    
        numFullLines = 0

        statusbar = self.GetParent().statusbar

        rowsToRemove = []

        for i in range(Board.BoardHeight):
            n = 0
            for j in range(Board.BoardWidth):
                if not self.shapeAt(j, i) == Tetrominoes.NoShape:
                    n = n + 1

            if n == 10:
                rowsToRemove.append(i)

        rowsToRemove.reverse()

        for m in rowsToRemove:
            for k in range(m, Board.BoardHeight):
                for l in range(Board.BoardWidth):
                        self.setShapeAt(l, k, self.shapeAt(l, k + 1))

            numFullLines = numFullLines + len(rowsToRemove)

            if numFullLines > 0:
                self.numLinesRemoved = self.numLinesRemoved + numFullLines
                statusbar.SetStatusText(str(self.numLinesRemoved)) 
                self.isWaitingAfterLine = True
                self.curPiece.setShape(Tetrominoes.NoShape)
                self.Refresh()


    def newPiece(self):
        
        self.curPiece = self.nextPiece
        statusbar = self.GetParent().statusbar
        self.nextPiece.setRandomShape()
        self.curX = Board.BoardWidth / 2 + 1
        self.curY = Board.BoardHeight - 1 + self.curPiece.minY()

        if not self.tryMove(self.curPiece, self.curX, self.curY):
            
            self.curPiece.setShape(Tetrominoes.NoShape)
            self.timer.Stop()
            self.isStarted = False
            statusbar.SetStatusText('Game over')
            

    def tryMove(self, newPiece, newX, newY):
        
        for i in range(4):
            
            x = newX + newPiece.x(i)
            y = newY - newPiece.y(i)
            
            if x < 0 or x >= Board.BoardWidth or y < 0 or y >= Board.BoardHeight:
                return False
            if self.shapeAt(x, y) != Tetrominoes.NoShape:
                return False

        self.curPiece = newPiece
        self.curX = newX
        self.curY = newY
        self.Refresh()
        
        return True


    def drawSquare(self, dc, x, y, shape):
        
        colors = ['#000000', '#CC6666', '#66CC66', '#6666CC',
                  '#CCCC66', '#CC66CC', '#66CCCC', '#DAAA00']

        light = ['#000000', '#F89FAB', '#79FC79', '#7979FC', 
                 '#FCFC79', '#FC79FC', '#79FCFC', '#FCC600']

        dark = ['#000000', '#803C3B', '#3B803B', '#3B3B80', 
                 '#80803B', '#803B80', '#3B8080', '#806200']

        pen = wx.Pen(light[shape])
        pen.SetCap(wx.CAP_PROJECTING)
        dc.SetPen(pen)

        dc.DrawLine(x, y + self.squareHeight() - 1, x, y)
        dc.DrawLine(x, y, x + self.squareWidth() - 1, y)

        darkpen = wx.Pen(dark[shape])
        darkpen.SetCap(wx.CAP_PROJECTING)
        dc.SetPen(darkpen)

        dc.DrawLine(x + 1, y + self.squareHeight() - 1,
            x + self.squareWidth() - 1, y + self.squareHeight() - 1)
        dc.DrawLine(x + self.squareWidth() - 1, 
        y + self.squareHeight() - 1, x + self.squareWidth() - 1, y + 1)

        dc.SetPen(wx.TRANSPARENT_PEN)
        dc.SetBrush(wx.Brush(colors[shape]))
        dc.DrawRectangle(x + 1, y + 1, self.squareWidth() - 2, 
        self.squareHeight() - 2)


class Tetrominoes(object):
    
    NoShape = 0
    ZShape = 1
    SShape = 2
    LineShape = 3
    TShape = 4
    SquareShape = 5
    LShape = 6
    MirroredLShape = 7


class Shape(object):
    
    coordsTable = (
        ((0, 0),     (0, 0),     (0, 0),     (0, 0)),
        ((0, -1),    (0, 0),     (-1, 0),    (-1, 1)),
        ((0, -1),    (0, 0),     (1, 0),     (1, 1)),
        ((0, -1),    (0, 0),     (0, 1),     (0, 2)),
        ((-1, 0),    (0, 0),     (1, 0),     (0, 1)),
        ((0, 0),     (1, 0),     (0, 1),     (1, 1)),
        ((-1, -1),   (0, -1),    (0, 0),     (0, 1)),
        ((1, -1),    (0, -1),    (0, 0),     (0, 1))
    )

    def __init__(self):
        
        self.coords = [[0,0] for i in range(4)]
        self.pieceShape = Tetrominoes.NoShape

        self.setShape(Tetrominoes.NoShape)

    def shape(self):
        
        return self.pieceShape

    def setShape(self, shape):
        
        table = Shape.coordsTable[shape]
        for i in range(4):
            for j in range(2):
                self.coords[i][j] = table[i][j]

        self.pieceShape = shape

    def setRandomShape(self):
        
        self.setShape(random.randint(1, 7))

    def x(self, index):
        
        return self.coords[index][0]

    def y(self, index):
        
        return self.coords[index][1]

    def setX(self, index, x):
        
        self.coords[index][0] = x

    def setY(self, index, y):
        
        self.coords[index][1] = y

    def minX(self):
        
        m = self.coords[0][0]
        for i in range(4):
            m = min(m, self.coords[i][0])

        return m

    def maxX(self):
        
        m = self.coords[0][0]
        for i in range(4):
            m = max(m, self.coords[i][0])

        return m

    def minY(self):
        
        m = self.coords[0][1]
        for i in range(4):
            m = min(m, self.coords[i][1])

        return m

    def maxY(self):
        
        m = self.coords[0][1]
        
        for i in range(4):
            m = max(m, self.coords[i][1])

        return m

    def rotatedLeft(self):
        
        if self.pieceShape == Tetrominoes.SquareShape:
            return self

        result = Shape()
        result.pieceShape = self.pieceShape
        
        for i in range(4):
            result.setX(i, self.y(i))
            result.setY(i, -self.x(i))

        return result

    def rotatedRight(self):
        
        if self.pieceShape == Tetrominoes.SquareShape:
            return self

        result = Shape()
        result.pieceShape = self.pieceShape
        
        for i in range(4):
            result.setX(i, -self.y(i))
            result.setY(i, self.x(i))

        return result

if __name__ == '__main__':
    os.chdir(os.path.abspath(sys.path[0]))
    app = wx.App()
    Tetris(None, title='Tetris')
    app.MainLoop()

具体改动

解决了在windows下不能够直接使用方向键的问题

def __init__(self, parent):
        wx.Panel.__init__(self, parent, style=wx.WANTS_CHARS)

扩大了默认的游戏界面大小

wx.Frame.__init__(self, parent, title=title, size=(324, 684))

增加了图标

self.icon = wx.Icon(name="icon.ico", type=wx.BITMAP_TYPE_ICO)
self.SetIcon(self.icon)

增加了开始菜单栏（包括退出，重新开始，查看用时）

self.menu1 = wx.Menu()
self.menu1.Append(wx.ID_EXIT, u"退出(&X)")
self.Bind(wx.EVT_MENU, self.OnClose, id=wx.ID_EXIT)
self.menu1.Append(501, u"重新开始(&R)")
self.menu1.Append(502, u"查看耗时(需要先暂停游戏)")
self.Bind(wx.EVT_MENU, self.OnCostTime, id=502)
self.Bind(wx.EVT_MENU, self.OnRestart, id=501)
self.menuBar.Append(self.menu1, u"开始(&F)")
self.menuBar.Enable(502, False)

def OnRestart(self, evt):     
    Tetris(None, title='Tetris')
    self.Destroy()

def OnCostTime(self, evt): # 查看耗时
  wx.MessageBox(u'您已经坚持了 %.1f 秒'%(1.0 * self.board.costTime * self.board.Speed / 1000),
           u"用时", wx.OK | wx.ICON_INFORMATION, self)

if self.isPaused:
    self.GetParent().GetMenuBar().Enable(502, True)
else:
    self.GetParent().GetMenuBar().Enable(502, False)

增加了难度选择

self.menu2 = wx.Menu()
self.menu2.Append(101, u"简单\tCtrl+1", u"", wx.ITEM_RADIO)
self.menu2.Append(102, u"中等\tCtrl+2", u"", wx.ITEM_RADIO)
self.menu2.Append(103, u"困难\tCtrl+3", u"", wx.ITEM_RADIO)
self.Bind(wx.EVT_MENU_RANGE, self.OnDifficulty, id=101, id2=103)
self.menuBar.Append(self.menu2, u"难度(&D)") 
global selectDifficulty
self.menuBar.Check(selectDifficulty, True)

def OnDifficulty(self, evt):
        number = evt.GetId()
        global SPEED
        global selectDifficulty
        if number == 101:
            SPEED = 300
            selectDifficulty = 101
        elif number == 102:
            SPEED = 200
            selectDifficulty = 102
        else:
            SPEED = 100
            selectDifficulty = 103
        Tetris(None, title='Tetris')
        self.Destroy()

增加了关于菜单栏

self.menu3 = wx.Menu()
self.menu3.Append(301, u"程序信息(&I)\tF1")
self.Bind(wx.EVT_MENU, self.OnHelp, id=301)
self.menuBar.Append(self.menu3, u"关于(&A)")

def OnHelp(self, evt):
        wx.MessageBox(u"16级第7次上机练习(WX)\n俄罗斯方块",
            u"16Lab7(WX)", wx.OK | wx.ICON_INFORMATION, self)

有个小BUG

程序第一次跑，退出的时候会出现程序崩溃的提示。但第二次以后就正常了，不知道为什么。不光我的程序有问题，网上的示例程序也有这个问题。

注意

代码所在路径不能有中文。