2019-03-05 实现俄罗斯方块
#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
ZetCode PyQt5 tutorial
This is a Tetris game clone.
Author: Jan Bodnar
Website: zetcode.com
Last edited: August 2017
"""
from PyQt5.QtWidgetsimport QMainWindow, QFrame, QDesktopWidget, QApplication
from PyQt5.QtCoreimport Qt, QBasicTimer, pyqtSignal
from PyQt5.QtGuiimport QPainter, QColor
import sys, random
class Tetris(QMainWindow):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
'''initiates application UI'''
self.tboard = Board(self)
self.setCentralWidget(self.tboard)
self.statusbar =self.statusBar()
self.tboard.msg2Statusbar[str].connect(self.statusbar.showMessage)
self.tboard.start()
self.resize(180,380)
self.center()
self.setWindowTitle('Tetris')
self.show()
def center(self):
'''centers the window on the screen'''
screen = QDesktopWidget().screenGeometry()
size =self.geometry()
self.move((screen.width() - size.width()) /2,
(screen.height() - size.height()) /2)
class Board(QFrame):
msg2Statusbar = pyqtSignal(str)
BoardWidth =10
BoardHeight =22
Speed =300
def __init__(self, parent):
super().__init__(parent)
self.initBoard()
def initBoard(self):
'''initiates board'''
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
self.clearBoard()
def shapeAt(self, x, y):
'''determines shape at the board position'''
return self.board[(y * Board.BoardWidth) + x]
def setShapeAt(self, x, y, shape):
'''sets a shape at the board'''
self.board[(y * Board.BoardWidth) + x] = shape
def squareWidth(self):
'''returns the width of one square'''
return self.contentsRect().width() // Board.BoardWidth
def squareHeight(self):
'''returns the height of one square'''
return self.contentsRect().height() // Board.BoardHeight
def start(self):
'''starts game'''
if self.isPaused:
return
self.isStarted =True
self.isWaitingAfterLine =False
self.numLinesRemoved =0
self.clearBoard()
self.msg2Statusbar.emit(str(self.numLinesRemoved))
self.newPiece()
self.timer.start(Board.Speed,self)
def pause(self):
'''pauses game'''
if not self.isStarted:
return
self.isPaused =not self.isPaused
if self.isPaused:
self.timer.stop()
self.msg2Statusbar.emit("paused")
else:
self.timer.start(Board.Speed,self)
self.msg2Statusbar.emit(str(self.numLinesRemoved))
self.update()
def paintEvent(self, event):
'''paints all shapes of the game'''
painter = QPainter(self)
rect =self.contentsRect()
boardTop = rect.bottom() - Board.BoardHeight *self.squareHeight()
for iin range(Board.BoardHeight):
for jin range(Board.BoardWidth):
shape =self.shapeAt(j, Board.BoardHeight - i -1)
if shape != Tetrominoe.NoShape:
self.drawSquare(painter,
rect.left() + j *self.squareWidth(),
boardTop + i *self.squareHeight(), shape)
if self.curPiece.shape() != Tetrominoe.NoShape:
for iin range(4):
x =self.curX +self.curPiece.x(i)
y =self.curY -self.curPiece.y(i)
self.drawSquare(painter, rect.left() + x *self.squareWidth(),
boardTop + (Board.BoardHeight - y -1) *self.squareHeight(),
self.curPiece.shape())
def keyPressEvent(self, event):
'''processes key press events'''
if not self.isStartedor self.curPiece.shape() == Tetrominoe.NoShape:
super(Board,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(Board,self).keyPressEvent(event)
def timerEvent(self, event):
'''handles timer event'''
if event.timerId() ==self.timer.timerId():
if self.isWaitingAfterLine:
self.isWaitingAfterLine =False
self.newPiece()
else:
self.oneLineDown()
else:
super(Board,self).timerEvent(event)
def clearBoard(self):
'''clears shapes from the board'''
for iin range(Board.BoardHeight * Board.BoardWidth):
self.board.append(Tetrominoe.NoShape)
def dropDown(self):
'''drops down a shape'''
newY =self.curY
while newY >0:
if not self.tryMove(self.curPiece,self.curX, newY -1):
break
newY -=1
self.pieceDropped()
def oneLineDown(self):
'''goes one line down with a shape'''
if not self.tryMove(self.curPiece,self.curX,self.curY -1):
self.pieceDropped()
def pieceDropped(self):
'''after dropping shape, remove full lines and create new shape'''
for iin 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):
'''removes all full lines from the board'''
numFullLines =0
rowsToRemove = []
for iin range(Board.BoardHeight):
n =0
for jin range(Board.BoardWidth):
if not self.shapeAt(j, i) == Tetrominoe.NoShape:
n = n +1
if n ==10:
rowsToRemove.append(i)
rowsToRemove.reverse()
for min rowsToRemove:
for kin range(m, Board.BoardHeight):
for lin range(Board.BoardWidth):
self.setShapeAt(l, k,self.shapeAt(l, k +1))
numFullLines = numFullLines +len(rowsToRemove)
if numFullLines >0:
self.numLinesRemoved =self.numLinesRemoved + numFullLines
self.msg2Statusbar.emit(str(self.numLinesRemoved))
self.isWaitingAfterLine =True
self.curPiece.setShape(Tetrominoe.NoShape)
self.update()
def newPiece(self):
'''creates a new shape'''
self.curPiece = Shape()
self.curPiece.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(Tetrominoe.NoShape)
self.timer.stop()
self.isStarted =False
self.msg2Statusbar.emit("Game over")
def tryMove(self, newPiece, newX, newY):
'''tries to move a shape'''
for iin range(4):
x = newX + newPiece.x(i)
y = newY - newPiece.y(i)
if x <0 or x >= Board.BoardWidthor y <0 or y >= Board.BoardHeight:
return False
if self.shapeAt(x, y) != Tetrominoe.NoShape:
return False
self.curPiece = newPiece
self.curX = newX
self.curY = newY
self.update()
return True
def drawSquare(self, painter, x, y, shape):
'''draws a square of a 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)
class Tetrominoe(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 = Tetrominoe.NoShape
self.setShape(Tetrominoe.NoShape)
def shape(self):
'''returns shape'''
return self.pieceShape
def setShape(self, shape):
'''sets a shape'''
table = Shape.coordsTable[shape]
for iin range(4):
for jin range(2):
self.coords[i][j] = table[i][j]
self.pieceShape = shape
def setRandomShape(self):
'''chooses a random shape'''
self.setShape(random.randint(1,7))
def x(self, index):
'''returns x coordinate'''
return self.coords[index][0]
def y(self, index):
'''returns y coordinate'''
return self.coords[index][1]
def setX(self, index, x):
'''sets x coordinate'''
self.coords[index][0] = x
def setY(self, index, y):
'''sets y coordinate'''
self.coords[index][1] = y
def minX(self):
'''returns min x value'''
m =self.coords[0][0]
for iin range(4):
m =min(m,self.coords[i][0])
return m
def maxX(self):
'''returns max x value'''
m =self.coords[0][0]
for iin range(4):
m =max(m,self.coords[i][0])
return m
def minY(self):
'''returns min y value'''
m =self.coords[0][1]
for iin range(4):
m =min(m,self.coords[i][1])
return m
def maxY(self):
'''returns max y value'''
m =self.coords[0][1]
for iin range(4):
m =max(m,self.coords[i][1])
return m
def rotateLeft(self):
'''rotates shape to the left'''
if self.pieceShape == Tetrominoe.SquareShape:
return self
result = Shape()
result.pieceShape =self.pieceShape
for iin range(4):
result.setX(i,self.y(i))
result.setY(i, -self.x(i))
return result
def rotateRight(self):
'''rotates shape to the right'''
if self.pieceShape == Tetrominoe.SquareShape:
return self
result = Shape()
result.pieceShape =self.pieceShape
for iin range(4):
result.setX(i, -self.y(i))
result.setY(i,self.x(i))
return result
if __name__ =='__main__':
app = QApplication([])
tetris = Tetris()
sys.exit(app.exec_())
