from PyQt5.QtCore import Qt, QTimer
from PyQt5.QtGui import QPainter
from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel, QWidget
from random import randint

shelf_size = 100



class drow(QWidget):
    def paintEvent(self, event):
        global shelf_number
        painter = QPainter(self)
        h = self.height()
        w = self.width()
        y = 0
        while y < h:
            y += shelf_size
            shelf_number+=1
            painter.drawLine(0, y, w, y)


class Box(QLabel):
    pass


speed = 10


def move_hero(window, key):
    global speed
    x = window.hero.x()
    y = window.hero.y()
    hero = window.hero
    if key == Qt.Key_Left:
        hero.move(x - speed, y)
    elif key == Qt.Key_Up:
        hero.move(x, y - shelf_size)
    elif key == Qt.Key_Right:
        hero.move(x + speed, y)


class HeroWindow(QMainWindow):
    def keyPressEvent(self, event):
        hero = self.hero
        key = event.key()
        if key != Qt.Key_Down:
            hero.direction = key


def make_hero(window):
    hero = Box()
    hero.setFixedSize(100, 100)
    hero.move(int((window.width() - hero.width()) / 2), int((window.height() - hero.height())))
    hero.direction = Qt.Key_Up
    hero.setStyleSheet("background-color:  black")
    window.layout().addWidget(hero)
    window.hero = hero
    HeroWindow.hero = hero


def make_monster(window):
    monst = Box()
    mnst_size = [randint(3, 10) * 10, randint(1, 10) * 10]
    monst.setFixedSize(mnst_size[0], mnst_size[1])

    monst.move(int((randint(3, 5) * shelf_size - monst.width()) / 2),
               int((randint(3, 5) * shelf_size - monst.height())))
    monst.direction = Qt.Key_Up
    monst.setStyleSheet("background-color:  red")
    window.layout().addWidget(monst)
    window.monst = monst
    HeroWindow.monst = monst


root = QApplication([])
window = HeroWindow()
window.resize(900, 600)
window.setStyleSheet("background-color:  #FF9E73")

shelf_number = window.height()//100

pole = drow()
window.layout().addWidget(pole)

make_hero(window)
for i in range(15):
    make_monster(window)


timer = QTimer()
timer.timeout.connect(lambda: move_hero(window, HeroWindow.hero.direction))
timer.start(266)

window.show()
root.exec()