import pygame
import random


class Main():

    def __init__(self, resolution):
        self.resolution = resolution
        resolution = (640, 480)
        self.screen = pygame.display.set_mode(resolution)
        self.stage = pygame.display.set_mode(resolution)
        self.spawn = (random.randint(0, (resolution[0] - 32)), random.randint(0, resolution[1] - 32))
        self.coin = pygame.image.load('Coin.png')
        self.background = pygame.image.load('BG.png')

    def drawing(self):
            self.screen.blit(self.background, (0, 0))
            self.stage.blit(self.coin, self.spawn)

    running = True
    while running:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False
            if event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:
                running = False
            drawing()
            pygame.display.update()
window1 = Main((1200, 900))

if __name__ == '__Main__':
    pygame.init()
    Main()