如何使游戏角色（用户）平稳移动？

Question

在我的游戏中，我将角色移动。设置方法是：

if game_over_state == False:
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_ESCAPE:
            pause = True
            game_paused()
        if event.key == pygame.K_LEFT:
            player_x_change = -2
        if event.key == pygame.K_RIGHT:
            player_x_change = 2
        if event.key == pygame.K_UP:
            player_y_change = -2
        if event.key == pygame.K_DOWN:
            player_y_change = 2

    if event.type == pygame.KEYUP:
        if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT
            player_x_change = 0
        if event.type == pygame.KEYUP:
            player_y_change = 0

是否可以将其更改为while函数或其他方式，以便在释放箭头键（即使按住另一个箭头键时）时角色也不会停止移动？

Answer 1

[...]因此，释放箭头键时角色不会停止移动[...]

当然，请不要在player_x_change事件中重置player_y_change和KEYUP：

if game_over_state == False:
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_ESCAPE:
            pause = True
            game_paused()
        if event.key == pygame.K_LEFT:
            player_x_change = -2
        if event.key == pygame.K_RIGHT:
            player_x_change = 2
        if event.key == pygame.K_UP:
            player_y_change = -2
        if event.key == pygame.K_DOWN:
            player_y_change = 2

    # DELETE
    #if event.type == pygame.KEYUP:
    #    if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT
    #        player_x_change = 0
    #    if event.type == pygame.KEYUP:
    #        player_y_change = 0

注意，如果您不分别更改player_x_change的状态player_y_change，则player_x_change取决于最后按下的

LEFT / 
RIGHT，而player_y_change取决于最后按下的UP / DOWN键。
注意，如果您希望角色仅沿一个方向（左，右，上或下）移动，则必须设置player_x_change或player_y_change。例如：]]
if game_over_state == False:
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_ESCAPE:
            pause = True
            game_paused()
        if event.key == pygame.K_LEFT:
            player_x_change, player_y_change = -2, 0
        if event.key == pygame.K_RIGHT:
            player_x_change, player_y_change = 2, 0
        if event.key == pygame.K_UP:
            player_x_change, player_y_change = 0, -2
        if event.key == pygame.K_DOWN:
            player_x_change, player_y_change = 0, 2