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Python pyqt (gui) example 'tetrix'
Modules used in program:
import randomimport copy
tetrix
Python pyqt example: tetrix
#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2014 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
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## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
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## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
## the names of its contributors may be used to endorse or promote
## products derived from this software without specific prior written
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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## $QT_END_LICENSE$
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#############################################################################
import copy
import random
from PyQt5.QtCore import pyqtSignal, QBasicTimer, QSize, Qt
from PyQt5.QtGui import QColor, QPainter, QPixmap
from PyQt5.QtWidgets import (QApplication, QFrame, QGridLayout, QLabel,
QLCDNumber, QPushButton, QWidget)
NoShape, ZShape, SShape, LineShape, TShape, SquareShape, LShape, MirroredLShape = range(8)
class TetrixWindow(QWidget):
def __init__(self):
super(TetrixWindow, self).__init__()
self.board = TetrixBoard()
nextPieceLabel = QLabel()
nextPieceLabel.setFrameStyle(QFrame.Box | QFrame.Raised)
nextPieceLabel.setAlignment(Qt.AlignCenter)
self.board.setNextPieceLabel(nextPieceLabel)
scoreLcd = QLCDNumber(5)
scoreLcd.setSegmentStyle(QLCDNumber.Filled)
levelLcd = QLCDNumber(2)
levelLcd.setSegmentStyle(QLCDNumber.Filled)
linesLcd = QLCDNumber(5)
linesLcd.setSegmentStyle(QLCDNumber.Filled)
startButton = QPushButton("&Start")
startButton.setFocusPolicy(Qt.NoFocus)
quitButton = QPushButton("&Quit")
quitButton.setFocusPolicy(Qt.NoFocus)
pauseButton = QPushButton("&Pause")
pauseButton.setFocusPolicy(Qt.NoFocus)
startButton.clicked.connect(self.board.start)
pauseButton.clicked.connect(self.board.pause)
quitButton.clicked.connect(QApplication.instance().quit)
self.board.scoreChanged.connect(scoreLcd.display)
self.board.levelChanged.connect(levelLcd.display)
self.board.linesRemovedChanged.connect(linesLcd.display)
layout = QGridLayout()
layout.addWidget(self.createLabel("NEXT"), 0, 0)
layout.addWidget(nextPieceLabel, 1, 0)
layout.addWidget(self.createLabel("LEVEL"), 2, 0)
layout.addWidget(levelLcd, 3, 0)
layout.addWidget(startButton, 4, 0)
layout.addWidget(self.board, 0, 1, 6, 1)
layout.addWidget(self.createLabel("SCORE"), 0, 2)
layout.addWidget(scoreLcd, 1, 2)
layout.addWidget(self.createLabel("LINES REMOVED"), 2, 2)
layout.addWidget(linesLcd, 3, 2)
layout.addWidget(quitButton, 4, 2)
layout.addWidget(pauseButton, 5, 2)
self.setLayout(layout)
self.setWindowTitle("Tetrix")
self.resize(550, 370)
def createLabel(self, text):
lbl = QLabel(text)
lbl.setAlignment(Qt.AlignHCenter | Qt.AlignBottom)
return lbl
class TetrixBoard(QFrame):
BoardWidth = 10
BoardHeight = 22
scoreChanged = pyqtSignal(int)
levelChanged = pyqtSignal(int)
linesRemovedChanged = pyqtSignal(int)
def __init__(self, parent=None):
super(TetrixBoard, self).__init__(parent)
self.timer = QBasicTimer()
self.nextPieceLabel = None
self.isWaitingAfterLine = False
self.curPiece = TetrixPiece()
self.nextPiece = TetrixPiece()
self.curX = 0
self.curY = 0
self.numLinesRemoved = 0
self.numPiecesDropped = 0
self.score = 0
self.level = 0
self.board = None
self.setFrameStyle(QFrame.Panel | QFrame.Sunken)
self.setFocusPolicy(Qt.StrongFocus)
self.isStarted = False
self.isPaused = False
self.clearBoard()
self.nextPiece.setRandomShape()
def shapeAt(self, x, y):
return self.board[(y * TetrixBoard.BoardWidth) + x]
def setShapeAt(self, x, y, shape):
self.board[(y * TetrixBoard.BoardWidth) + x] = shape
def timeoutTime(self):
return 1000 / (1 + self.level)
def squareWidth(self):
return self.contentsRect().width() / TetrixBoard.BoardWidth
def squareHeight(self):
return self.contentsRect().height() / TetrixBoard.BoardHeight
def setNextPieceLabel(self, label):
self.nextPieceLabel = label
def sizeHint(self):
return QSize(TetrixBoard.BoardWidth * 15 + self.frameWidth() * 2,
TetrixBoard.BoardHeight * 15 + self.frameWidth() * 2)
def minimumSizeHint(self):
return QSize(TetrixBoard.BoardWidth * 5 + self.frameWidth() * 2,
TetrixBoard.BoardHeight * 5 + self.frameWidth() * 2)
def start(self):
if self.isPaused:
return
self.isStarted = True
self.isWaitingAfterLine = False
self.numLinesRemoved = 0
self.numPiecesDropped = 0
self.score = 0
self.level = 1
self.clearBoard()
self.linesRemovedChanged.emit(self.numLinesRemoved)
self.scoreChanged.emit(self.score)
self.levelChanged.emit(self.level)
self.newPiece()
self.timer.start(self.timeoutTime(), self)
def pause(self):
if not self.isStarted:
return
self.isPaused = not self.isPaused
if self.isPaused:
self.timer.stop()
else:
self.timer.start(self.timeoutTime(), self)
self.update()
def paintEvent(self, event):
super(TetrixBoard, self).paintEvent(event)
painter = QPainter(self)
rect = self.contentsRect()
if self.isPaused:
painter.drawText(rect, Qt.AlignCenter, "Pause")
return
boardTop = rect.bottom() - TetrixBoard.BoardHeight * self.squareHeight()
for i in range(TetrixBoard.BoardHeight):
for j in range(TetrixBoard.BoardWidth):
shape = self.shapeAt(j, TetrixBoard.BoardHeight - i - 1)
if shape != NoShape:
self.drawSquare(painter,
rect.left() + j * self.squareWidth(),
boardTop + i * self.squareHeight(), shape)
if self.curPiece.shape() != NoShape:
for i in 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 + (TetrixBoard.BoardHeight - y - 1) * self.squareHeight(),
self.curPiece.shape())
def keyPressEvent(self, event):
if not self.isStarted or self.isPaused or self.curPiece.shape() == NoShape:
super(TetrixBoard, self).keyPressEvent(event)
return
key = event.key()
if 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.rotatedRight(), self.curX, self.curY)
elif key == Qt.Key_Up:
self.tryMove(self.curPiece.rotatedLeft(), self.curX, self.curY)
elif key == Qt.Key_Space:
self.dropDown()
elif key == Qt.Key_D:
self.oneLineDown()
else:
super(TetrixBoard, self).keyPressEvent(event)
def timerEvent(self, event):
if event.timerId() == self.timer.timerId():
if self.isWaitingAfterLine:
self.isWaitingAfterLine = False
self.newPiece()
self.timer.start(self.timeoutTime(), self)
else:
self.oneLineDown()
else:
super(TetrixBoard, self).timerEvent(event)
def clearBoard(self):
self.board = [NoShape for i in range(TetrixBoard.BoardHeight * TetrixBoard.BoardWidth)]
def dropDown(self):
dropHeight = 0
newY = self.curY
while newY > 0:
if not self.tryMove(self.curPiece, self.curX, newY - 1):
break
newY -= 1
dropHeight += 1
self.pieceDropped(dropHeight)
def oneLineDown(self):
if not self.tryMove(self.curPiece, self.curX, self.curY - 1):
self.pieceDropped(0)
def pieceDropped(self, dropHeight):
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.numPiecesDropped += 1
if self.numPiecesDropped % 25 == 0:
self.level += 1
self.timer.start(self.timeoutTime(), self)
self.levelChanged.emit(self.level)
self.score += dropHeight + 7
self.scoreChanged.emit(self.score)
self.removeFullLines()
if not self.isWaitingAfterLine:
self.newPiece()
def removeFullLines(self):
numFullLines = 0
for i in range(TetrixBoard.BoardHeight - 1, -1, -1):
lineIsFull = True
for j in range(TetrixBoard.BoardWidth):
if self.shapeAt(j, i) == NoShape:
lineIsFull = False
break
if lineIsFull:
numFullLines += 1
for k in range(TetrixBoard.BoardHeight - 1):
for j in range(TetrixBoard.BoardWidth):
self.setShapeAt(j, k, self.shapeAt(j, k + 1))
for j in range(TetrixBoard.BoardWidth):
self.setShapeAt(j, TetrixBoard.BoardHeight - 1, NoShape)
if numFullLines > 0:
self.numLinesRemoved += numFullLines
self.score += 10 * numFullLines
self.linesRemovedChanged.emit(self.numLinesRemoved)
self.scoreChanged.emit(self.score)
self.timer.start(500, self)
self.isWaitingAfterLine = True
self.curPiece.setShape(NoShape)
self.update()
def newPiece(self):
self.curPiece = copy.deepcopy(self.nextPiece)
self.nextPiece.setRandomShape()
self.showNextPiece()
self.curX = TetrixBoard.BoardWidth // 2 + 1
self.curY = TetrixBoard.BoardHeight - 1 + self.curPiece.minY()
if not self.tryMove(self.curPiece, self.curX, self.curY):
self.curPiece.setShape(NoShape)
self.timer.stop()
self.isStarted = False
def showNextPiece(self):
if self.nextPieceLabel is None:
return
dx = self.nextPiece.maxX() - self.nextPiece.minX() + 1
dy = self.nextPiece.maxY() - self.nextPiece.minY() + 1
pixmap = QPixmap(dx * self.squareWidth(), dy * self.squareHeight())
painter = QPainter(pixmap)
painter.fillRect(pixmap.rect(), self.nextPieceLabel.palette().window())
for i in range(4):
x = self.nextPiece.x(i) - self.nextPiece.minX()
y = self.nextPiece.y(i) - self.nextPiece.minY()
self.drawSquare(painter, x * self.squareWidth(),
y * self.squareHeight(), self.nextPiece.shape())
painter.end()
self.nextPieceLabel.setPixmap(pixmap)
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 >= TetrixBoard.BoardWidth or y < 0 or y >= TetrixBoard.BoardHeight:
return False
if self.shapeAt(x, y) != NoShape:
return False
self.curPiece = newPiece
self.curX = newX
self.curY = newY
self.update()
return True
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)
class TetrixPiece(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 _ in range(4)]
self.pieceShape = NoShape
self.setShape(NoShape)
def shape(self):
return self.pieceShape
def setShape(self, shape):
table = TetrixPiece.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 == SquareShape:
return self
result = TetrixPiece()
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 == SquareShape:
return self
result = TetrixPiece()
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__':
import sys
app = QApplication(sys.argv)
window = TetrixWindow()
window.show()
random.seed(None)
sys.exit(app.exec_())
Useful links
- Learn PyQt: https://pythonbasics.org/pyqt-hello-world/
- Install PyQt: https://pythonbasics.org/install-pyqt/