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本文来自腾讯云,作者:Python小二


在那个电子产品比较匮乏的年代,小游戏机

还是为数不多的游戏类电子产品,对小孩子更是有着不可抗拒的魔力,在当时如果哪个小孩买了一个小游戏机,大伙一定迅速围上去…

俄罗斯方块作为其中一款小游戏,尽管规则简单、只有黑白双色,但其对当时游戏玩家的影响丝毫不亚于 LOL、农药、吃鸡对现在游戏玩家的影响,下面我们来看一下如何用 Python 实现俄罗斯方块这款小游戏。

规则

由小方块组成的不同形状的板块陆续从屏幕上方落下来,玩家通过调整板块的位置和方向,使它们在屏幕底部拼出完整的一条或几条。这些完整的横条会随即消失,给新落下来的板块腾出空间,与此同时,玩家得到分数奖励。没有被消除掉的方块不断堆积起来,一旦堆到屏幕顶端,玩家便告输,游戏结束。
— 百度百科

环境

  • 操作系统:Windows
  • Python 版本:3.6
  • 涉及模块:sys、random、PyQt5

实现

首先安装第三方模块 PyQt5,使用 pip install PyQt5 即可。

➢ 游戏主界面

实现代码

from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import sys
class MainBoard(QFrame):
    msg = pyqtSignal(str)
    BoardWidth = 10
    BoardHeight = 22
    Speed = 300
    def __init__(self, parent):
        super().__init__(parent)
        self.initBoard()
    def initBoard(self):
        self.timer = QBasicTimer()
        self.isWaitingAfterLine = False
        self.curX = 0
        self.curY = 0
        self.numLinesRemoved = 0
        self.board = []
        self.setFocusPolicy(Qt.StrongFocus)
        self.isStarted = False
        self.isPaused = False

 

效果图如下

➢ 小板块

定义小版块的形状

class ShapeForm(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 = ShapeForm.NoShape
        self.setShape(ShapeForm.NoShape)

 

画出图形

def drawSquare(self, painter, x, y, shape):
    colorTable = [0x000000, 0xCC6666, 0x66CC66, 0x6666CC,
                  0xCCCC66, 0xCC66CC, 0x66CCCC, 0xDAAA00]
    color = QColor(colorTable[shape])
    painter.fillRect(x + 1, y + 1, self.squareWidth() - 2,
        self.squareHeight() - 2, color)
    painter.setPen(color.lighter())
    painter.drawLine(x, y + self.squareHeight() - 1, x, y)
    painter.drawLine(x, y, x + self.squareWidth() - 1, y)
    painter.setPen(color.darker())
    painter.drawLine(x + 1, y + self.squareHeight() - 1,
        x + self.squareWidth() - 1, y + self.squareHeight() - 1)
    painter.drawLine(x + self.squareWidth() - 1,
        y + self.squareHeight() - 1, x + self.squareWidth() - 1, y + 1)

 

效果图如下


➢ 按键事件

def keyPressEvent(self, event):
    if not self.isStarted or self.curPiece.shape() == ShapeForm.NoShape:
        super(MainBoard, self).keyPressEvent(event)
        return
    key = event.key()
    if key == Qt.Key_P:
        self.pause()
        return
    if self.isPaused:
        return
    elif key == Qt.Key_Left:
        self.tryMove(self.curPiece, self.curX - 1, self.curY)
    elif key == Qt.Key_Right:
        self.tryMove(self.curPiece, self.curX + 1, self.curY)
    elif key == Qt.Key_Down:
        self.tryMove(self.curPiece.rotateRight(), self.curX, self.curY)
    elif key == Qt.Key_Up:
        self.tryMove(self.curPiece.rotateLeft(), self.curX, self.curY)
    elif key == Qt.Key_Space:
        self.dropDown()
    elif key == Qt.Key_D:
        self.oneLineDown()
    else:
        super(MainBoard, self).keyPressEvent(event)

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 >= MainBoard.BoardWidth or y < 0 or y >= MainBoard.BoardHeight:
            return False
        if self.shapeAt(x, y) != ShapeForm.NoShape:
            return False
    self.curPiece = newPiece
    self.curX = newX
    self.curY = newY
    self.update()
    return True

 

➢ 计时器事件

def timerEvent(self, event):
    if event.timerId() == self.timer.timerId():
        if self.isWaitingAfterLine:
            self.isWaitingAfterLine = False
            self.newPiece()
        else:
            self.oneLineDown()
    else:
        super(MainBoard, self).timerEvent(event)

 

➢ 开始和暂停

def start(self):
if self.isPaused:
return
self.isStarted = True
self.isWaitingAfterLine = False
self.numLinesRemoved = 0
self.clearBoard()
self.msg.emit(str(self.numLinesRemoved))
self.newPiece()
self.timer.start(MainBoard.Speed, self)

def pause(self):
if not self.isStarted:
return
self.isPaused = not self.isPaused
if self.isPaused:
self.timer.stop()
self.msg.emit(“paused”)
else:
self.timer.start(MainBoard.Speed, self)
self.msg.emit(str(self.numLinesRemoved))
self.update()

 

 

➢ 游戏类及初始化

class Tetris(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.tboard = MainBoard(self)
        self.setCentralWidget(self.tboard)
        self.statusbar = self.statusBar()
        self.tboard.msg[str].connect(self.statusbar.showMessage)
        self.tboard.start()
        self.resize(300, 500)
        self.center()
        self.setWindowTitle('俄罗斯方块')
        self.show()

    def center(self):
        screen = QDesktopWidget().screenGeometry()
        size = self.geometry()
        self.move((screen.width()-size.width())/2,
            (screen.height()-size.height())/2)

 

启动

if __name__ == '__main__':
    app = QApplication([])
    tetris = Tetris()
    sys.exit(app.exec_())

 

最终效果

打包

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