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# Copyright (C) 2010 velociraptor Genjix <aphidia@hotmail.com>
# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import sys
from PySide6.QtCore import (QEvent, QPoint, QRandomGenerator, QSize, Qt,
Property)
from PySide6.QtGui import QFont, QFontMetrics, QFontDatabase, QPainter
from PySide6.QtWidgets import QApplication, QMainWindow
from PySide6.QtStateMachine import (QEventTransition, QFinalState,
QKeyEventTransition, QState, QStateMachine)
class MovementTransition(QEventTransition):
def __init__(self, window):
super().__init__(window, QEvent.KeyPress)
self.window = window
def eventTest(self, event):
if (event.type() == QEvent.StateMachineWrapped
and event.event().type() == QEvent.KeyPress):
key = event.event().key()
return (key == Qt.Key_2 or key == Qt.Key_8
or key == Qt.Key_6 or key == Qt.Key_4)
return False
def onTransition(self, event):
key = event.event().key()
if key == Qt.Key_4:
self.window.move_player(self.window.left)
if key == Qt.Key_8:
self.window.move_player(self.window.Up)
if key == Qt.Key_6:
self.window.move_player(self.window.right)
if key == Qt.Key_2:
self.window.move_player(self.window.down)
class Custom(QState):
def __init__(self, parent, mw):
super().__init__(parent)
self.mw = mw
def onEntry(self, e):
print(self.mw.status)
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.pX = 5
self.pY = 5
self.width = 35
self.height = 20
self._status_str = ''
font = QFont()
if 'Monospace' in QFontDatabase.families():
font = QFont('Monospace', 12)
else:
for family in QFontDatabase.families():
if QFontDatabase.isFixedPitch(family):
font = QFont(family, 12)
self.setFont(font)
self.setup_map()
self.build_machine()
self.show()
def setup_map(self):
self.map = []
generator = QRandomGenerator().global_()
for x in range(self.width):
column = []
for y in range(self.height):
if (x == 0 or x == self.width - 1 or y == 0
or y == self.height - 1 or generator.bounded(0, 40) == 0):
column.append('#')
else:
column.append('.')
self.map.append(column)
def build_machine(self):
machine = QStateMachine(self)
input_state = Custom(machine, self)
# this line sets the status
self.status = 'hello!'
# however this line does not
input_state.assignProperty(self, 'status', 'Move the rogue with 2, 4, 6, and 8')
machine.setInitialState(input_state)
machine.start()
transition = MovementTransition(self)
input_state.addTransition(transition)
quit_state = QState(machine)
quit_state.assignProperty(self, 'status', 'Really quit(y/n)?')
yes_transition = QKeyEventTransition(self, QEvent.KeyPress, Qt.Key_Y)
self._final_state = QFinalState(machine)
yes_transition.setTargetState(self._final_state)
quit_state.addTransition(yes_transition)
no_transition = QKeyEventTransition(self, QEvent.KeyPress, Qt.Key_N)
no_transition.setTargetState(input_state)
quit_state.addTransition(no_transition)
quit_transition = QKeyEventTransition(self, QEvent.KeyPress, Qt.Key_Q)
quit_transition.setTargetState(quit_state)
input_state.addTransition(quit_transition)
machine.setInitialState(input_state)
machine.finished.connect(qApp.quit) # noqa: F821
machine.start()
def sizeHint(self):
metrics = QFontMetrics(self.font())
return QSize(metrics.horizontalAdvance('X') * self.width,
metrics.height() * (self.height + 1))
def paintEvent(self, event):
metrics = QFontMetrics(self.font())
with QPainter(self) as painter:
font_height = metrics.height()
font_width = metrics.horizontalAdvance('X')
painter.fillRect(self.rect(), Qt.black)
painter.setPen(Qt.white)
y_pos = font_height
painter.drawText(QPoint(0, y_pos), self.status)
for y in range(self.height):
y_pos += font_height
x_pos = 0
for x in range(self.width):
if y == self.pY and x == self.pX:
x_pos += font_width
continue
painter.drawText(QPoint(x_pos, y_pos), self.map[x][y])
x_pos += font_width
painter.drawText(QPoint(self.pX * font_width, (self.pY + 2) * font_height), '@')
def move_player(self, direction):
if direction == self.left:
if self.map[self.pX - 1][self.pY] != '#':
self.pX -= 1
elif direction == self.right:
if self.map[self.pX + 1][self.pY] != '#':
self.pX += 1
elif direction == self.Up:
if self.map[self.pX][self.pY - 1] != '#':
self.pY -= 1
elif direction == self.down:
if self.map[self.pX][self.pY + 1] != '#':
self.pY += 1
self.repaint()
def get_status(self):
return self._status_str
def set_status(self, status):
self._status_str = status
self.repaint()
status = Property(str, get_status, set_status)
Up = 0
down = 1
left = 2
right = 3
width = 35
height = 20
if __name__ == '__main__':
app = QApplication(sys.argv)
main_win = MainWindow()
sys.exit(app.exec())
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