图像在pygame中移动（崩溃pygame）

Question

i'm trying to make a game and when this loop runs, it crashes pygame

while poterbar_hunt_pone == True and ptwo_shot == True:

            if poterbarx < xone+carone_width:
                poterbar_dir = "right"
                poterbarx_c = 20
            else:
                poterbar_dir = "left"
                poterbarx_c = -20

            if poterbary+poterbarh < yone:
                poterbary_c = 20
            else:
                poterbary_c = -20

            if poterbarx <= xone+carone_width and poterbarx+poterbarw >= xone:

                if poterbary+poterbarh >= yone and poterbary <= yone+carone_height:
                    xone_change = random.randrange (-20, 20)
                    yone_change = random.randrange (-20, 20)
                    poterbar_hunt_pone = False
                    ptwo_shot = False
                    poterbarx = -100
                    poterbary = -100

when both values are True pygame crashes and i think is in the movement of poterbar. if anyone of you guys know about what causes pygame to crash please let me know

Answer 1

You are missing pygame.display.update() .

Add this at the very bottom of your code, so now it looks like:

while poterbar_hunt_pone == True and ptwo_shot == True:

            if poterbarx < xone+carone_width:
                poterbar_dir = "right"
                poterbarx_c = 20
            else:
                poterbar_dir = "left"
                poterbarx_c = -20

            if poterbary+poterbarh < yone:
                poterbary_c = 20
            else:
                poterbary_c = -20

            if poterbarx <= xone+carone_width and poterbarx+poterbarw >= xone:

                if poterbary+poterbarh >= yone and poterbary <= yone+carone_height:
                    xone_change = random.randrange (-20, 20)
                    yone_change = random.randrange (-20, 20)
                    poterbar_hunt_pone = False
                    ptwo_shot = False
                    poterbarx = -100
                    poterbary = -100
    pygame.display.update() # You have to update display