from PyQt5.QtWidgets import QMainWindow, QFrame, QDesktopWidget, QApplication
from PyQt5.QtCore import Qt, QBasicTimer, pyqtSignal
from PyQt5.QtGui import 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(, )
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())/,
(screen.height()-size.height())/) class Board(QFrame): msg2Statusbar = pyqtSignal(str) BoardWidth =
BoardHeight =
Speed = def __init__(self, parent):
super().__init__(parent) self.initBoard() def initBoard(self):
'''initiates board''' self.timer = QBasicTimer()
self.isWaitingAfterLine = False self.curX =
self.curY =
self.numLinesRemoved =
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 =
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 i in range(Board.BoardHeight):
for j in range(Board.BoardWidth):
shape = self.shapeAt(j, Board.BoardHeight - i - ) if shape != Tetrominoe.NoShape:
self.drawSquare(painter,
rect.left() + j * self.squareWidth(),
boardTop + i * self.squareHeight(), shape) if self.curPiece.shape() != Tetrominoe.NoShape: for i in range(): 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 - ) * self.squareHeight(),
self.curPiece.shape()) def keyPressEvent(self, event):
'''processes key press events''' if not self.isStarted or 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 - , self.curY) elif key == Qt.Key_Right:
self.tryMove(self.curPiece, self.curX + , 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 i in range(Board.BoardHeight * Board.BoardWidth):
self.board.append(Tetrominoe.NoShape) def dropDown(self):
'''drops down a shape''' newY = self.curY while newY > : if not self.tryMove(self.curPiece, self.curX, newY - ):
break newY -= self.pieceDropped() def oneLineDown(self):
'''goes one line down with a shape''' if not self.tryMove(self.curPiece, self.curX, self.curY - ):
self.pieceDropped() def pieceDropped(self):
'''after dropping shape, remove full lines and create new shape''' for i in range(): 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 =
rowsToRemove = [] for i in range(Board.BoardHeight): n =
for j in range(Board.BoardWidth):
if not self.shapeAt(j, i) == Tetrominoe.NoShape:
n = n + if n == :
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 + )) numFullLines = numFullLines + len(rowsToRemove) if numFullLines > : 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 - + 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 i in range(): x = newX + newPiece.x(i)
y = newY - newPiece.y(i) if x < or x >= Board.BoardWidth or y < 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 + , y + , self.squareWidth() - ,
self.squareHeight() - , color) painter.setPen(color.lighter())
painter.drawLine(x, y + self.squareHeight() - , x, y)
painter.drawLine(x, y, x + self.squareWidth() - , y) painter.setPen(color.darker())
painter.drawLine(x + , y + self.squareHeight() - ,
x + self.squareWidth() - , y + self.squareHeight() - )
painter.drawLine(x + self.squareWidth() - ,
y + self.squareHeight() - , x + self.squareWidth() - , y + ) class Tetrominoe(object): NoShape =
ZShape =
SShape =
LineShape =
TShape =
SquareShape =
LShape =
MirroredLShape = class Shape(object): coordsTable = (
((, ), (, ), (, ), (, )),
((, -), (, ), (-, ), (-, )),
((, -), (, ), (, ), (, )),
((, -), (, ), (, ), (, )),
((-, ), (, ), (, ), (, )),
((, ), (, ), (, ), (, )),
((-, -), (, -), (, ), (, )),
((, -), (, -), (, ), (, ))
) def __init__(self): self.coords = [[,] for i in range()]
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 i in range():
for j in range():
self.coords[i][j] = table[i][j] self.pieceShape = shape def setRandomShape(self):
'''chooses a random shape''' self.setShape(random.randint(, )) def x(self, index):
'''returns x coordinate''' return self.coords[index][] def y(self, index):
'''returns y coordinate''' return self.coords[index][] def setX(self, index, x):
'''sets x coordinate''' self.coords[index][] = x def setY(self, index, y):
'''sets y coordinate''' self.coords[index][] = y def minX(self):
'''returns min x value''' m = self.coords[][]
for i in range():
m = min(m, self.coords[i][]) return m def maxX(self):
'''returns max x value''' m = self.coords[][]
for i in range():
m = max(m, self.coords[i][]) return m def minY(self):
'''returns min y value''' m = self.coords[][]
for i in range():
m = min(m, self.coords[i][]) return m def maxY(self):
'''returns max y value''' m = self.coords[][]
for i in range():
m = max(m, self.coords[i][]) return m def rotateLeft(self):
'''rotates shape to the left''' if self.pieceShape == Tetrominoe.SquareShape:
return self result = Shape()
result.pieceShape = self.pieceShape for i in range(): 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 i in range(): 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_())