Python 如何让我的Pytron游戏吸引玩家？

我正在制作的tron游戏不会运行实际的角色。我已经为玩家一和玩家二创建了一个类，在while循环中我在draw命令中添加了一个类，但是它仍然没有运行游戏。有什么建议或解决方案吗？很抱歉代码中没有注释

import pygame
pygame.init()

black = 0,0,0 #Create black for background
P1_Color = 0,0,225 #Create blue for player 1
P2_Color = 255,0,0 #Create red for player 2

class Player:
    def __init__(self, x, y, direction, color, position):
        self.x = x #X coord
        self.y = y #Y coord
        self.position = (x,y)
        self.direction = direction #direction
        self.color = color #color
        self.rect = pygame.Rect(100, self.y - 1, 2, 2) #player rect object
    
    def draw(self):
        self.rect = pygame.Rect(100, self.y - 1, 2, 2)  # redefines rect
        pygame.draw.rect(screen, self.color, self.rect, 0)  # draws player onto screen
    
    def move(self):
        self.x += self.direction[0] * 2
        self.y += self.direction[1] * 2
    
screen = pygame.display.set_mode((1000, 750))  # creates window
pygame.display.set_caption("Tron")  # sets window title
clock = pygame.time.Clock()

p1 = Player(50, 0, (2, 0), P1_Color, (500,0))  # creates p1
p2 = Player(50, 50, (-2, 0), P2_Color, (0,500)) #create p2

done = False
while not done:
    for event in pygame.event.get():  # gets all event in last tick
        if event.type == pygame.QUIT:
            done = True
        elif event.type == pygame.KEYDOWN:
            # === Player 1 === #
            if event.key == pygame.K_w:
                p1.direction = (0, -2)
            elif event.key == pygame.K_s:
                p1.direction = (0, 2)
            elif event.key == pygame.K_a:
                p1.direction = (-2, 0)
            elif event.key == pygame.K_d:
                p1.direction = (2, 0)
            # === Player 2 === #
            if event.key == pygame.K_UP:
                p2.direction = (0, -2)
            elif event.key == pygame.K_DOWN:
                p2.direction = (0, 2)
            elif event.key == pygame.K_LEFT:
                p2.direction = (-2, 0)
            elif event.key == pygame.K_RIGHT:
                p2.direction = (2, 0)
    screen.fill(black)
    p1.draw()
    p1.move()
    p2.draw()
    p2.move()
            
pygame.quit()

---

您必须使用或更新显示：

done=False
虽然没有这样做：
# [...]
屏幕填充（黑色）
p1.绘图（）
p1.移动（）
p2.绘图（）
p2.move（）
pygame.display.update（）