Game.py

import pygame
import sys
import Map
from Scene import PlayScene

SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
FPS = 60

class Game():
    def __init__(self):
        self.active_scene = None

    def start_pygame(self):
        global screen, clock

        pygame.init()
        screen = pygame.display.set_mode([SCREEN_WIDTH, SCREEN_HEIGHT])
        pygame.mixer.init()
        pygame.display.set_caption('a game')
        clock = pygame.time.Clock()

    def load_assets(self):
        playScene_map = Map.Map('pygame test map.tmx')
        playScene_world = playScene_map.create_map()
        self.active_scene = PlayScene(playScene_world)
        
    def run(self):
        while self.active_scene != None:
            pressed_keys = pygame.key.get_pressed()
            filtered_events = []

            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    pygame.quit()
                    sys.exit()
                else:
                    filtered_events.append(event)

            self.active_scene.process_events(filtered_events)
            self.active_scene.controls(pressed_keys)
            self.active_scene.render()

            pygame.display.flip()
            clock.tick(FPS)