玩俄罗斯方块吗?教你用Python制作俄罗斯方块![Python基础]

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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):

ifnot 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):

ifnot 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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