python - AI 问题（即使不应该发生碰撞）

Question

我基本上是在尝试制作非常基本的 AI，它使用随机方向移动。即使我创建了阻止这种情况的 If 语句，它也会出于某种原因在自身内部移动。它只会发生在 x 坐标上，如果我更改顺序，它会发生在 y 坐标上。在这段代码中，我更改了顺序并显示。

我看不到问题，需要快速帮助。发生情况的示例（打印列表以查看）：

玩家 1 获胜（蓝色）

[[205, 300], [210, 300], [215, 300], [220, 300], [225, 300], [225, 305], [225, 310], [225, 315], [ 225, 320], [225, 325], [225, 320]]

dir_x = -5
dir_y = 0
dir_x2 = 5
dir_y2 = 0

x = 600
y = 300
x2 = 200
y2 = 300


cool = True
list1 = []
list2 = []

player1_score = 0
player2_score = 0

speedP1,speedPN1 = 5,-5
speedP2, speedPN2 = 5, -5

while cool == True: 

        screen.fill(black)
        possible_cor = ([5,0],[-5,0],[0,5],[0,-5])
        choices = random.choice(possible_cor)
        if len(list2) != 0:
            if len(list2)%5 == 0:  
                if dir_y2 == 5:
                    possible_cor = ([5,0],[-5,0],[0,5])
                    choices = random.choice(possible_cor)
                    dir_x2 = choices[0]
                    dir_y2 = choices[1]

                if dir_y2 == -5:

                    possible_cor = ([5,0],[-5,0],[0,-5])
                    choices = random.choice(possible_cor)
                    dir_x2 = choices[0]
                    dir_y2 = choices[1]
                if dir_x2 == 5:

                    possible_cor = ([5,0],[0,5],[0,-5])
                    choices = random.choice(possible_cor)
                    dir_x2 = choices[0]
                    dir_y2 = choices[1]

                if dir_x2 == -5:

                    possible_cor = ([-5,0],[0,5],[0,-5])
                    choices = random.choice(possible_cor) 
                    dir_x2 = choices[0]
                    dir_y2 = choices[1]






        x += dir_x
        y += dir_y

        x2 += dir_x2
        y2 += dir_y2

        message_display(str(score1),20,1.9,12,text_objects2)
        message_display(str(score2),20,2.1,12,text_objects2)
        message_display((":"),20,2,12,text_objects2)

        lightbike(blue,x,y)
        lightbike(green,x2,y2)


        if speedP1 == 5 or speedPN1 == -5:
            list1.append([x,y])
        if speedP2 == 5 or speedPN2 == -5:
            list2.append([x2,y2])




        for event in pygame.event.get():
            print (event)
            #Exit 
            if event.type ==  QUIT:
                pygame.quit()
                sys.exit()
            if (event.type == KEYDOWN):

                #Player1

                if (event.key == 276): #LEFT
                    if dir_x == 0:
                        dir_x = speedPN1
                    if dir_y != 0:
                        dir_y = 0
                if (event.key == 275): #RIGHT
                    if dir_x == 0:
                        dir_x = speedP1
                    if dir_y != 0:
                        dir_y = 0
                if (event.key == 273): #UP
                    if dir_y == 0:
                        dir_y  = speedPN1
                    if dir_x != 0:
                        dir_x = 0
                if (event.key == 274): #DOWN
                    if dir_y == 0:
                        dir_y = speedP1
                    if dir_x != 0:
                        dir_x = 0

        #Boundaries
        if x + 2 > w or x - 2 < 0 or y + 2 > h or y - 2 < 0:
            print ("Player 2 Wins(Green)")
            return AI_GAME(total_score,score2+1,score1)
        if y2 + 2 > h or y2 - 2 < 0 or x2 + 2 > w or x2 - 2 < 0:
            print ("Player 1 Wins(Blue)")
            return AI_GAME(total_score,score2,score1+1)

        for i,j in zip(list1,list2):
            lightbike(blue,i[0],i[1])
            lightbike(green,j[0],j[1])
            if list1.count(i) > 1:
                print ("Player 2 Wins(Green)") 
                return AI_GAME(total_score,score2+1,score1)
            if list2.count(i) > 0:
                player2_score += 1
                if player1_score != 0:
                    print ("Player 2 Wins(Green)") 
                    return AI_GAME(total_score,score2+1,score1)
            if list1.count(j) > 0:
                player1_score += 1
                if player2_score != 0:
                    print ("Player 1 Wins(Blue)")
                    return AI_GAME(total_score,score2,score1+1)
            if list2.count(j) > 1:
                print ("Player 1 Wins(Blue)")
                print (list2)
                pygame.quit()
                sys.exit()







        if len(list1) > 500:
            del list1[0:1]
        if len(list2) > 500:
            del list2[0:1]



        pygame.display.update()
        fpsClock.tick(30)

        if score1 ==3 or score2 == 3:
            cool = False

标签： pythonpygame

Answer 1

尽管我不完全了解您要做什么，但我想您遇到的问题是：

                if dir_y2 == 5:
                    possible_cor = ([5,0],[-5,0],[0,5])
                    choices = random.choice(possible_cor)
                    dir_x2 = choices[0]
                    dir_y2 = choices[1]

                if dir_y2 == -5:

                    possible_cor = ([5,0],[-5,0],[0,-5])
                    choices = random.choice(possible_cor)
                    dir_x2 = choices[0]
                    dir_y2 = choices[1]
                if dir_x2 == 5:

                    possible_cor = ([5,0],[0,5],[0,-5])
                    choices = random.choice(possible_cor)
                    dir_x2 = choices[0]
                    dir_y2 = choices[1]

                if dir_x2 == -5:

                    possible_cor = ([-5,0],[0,5],[0,-5])
                    choices = random.choice(possible_cor) 
                    dir_x2 = choices[0]
                    dir_y2 = choices[1]

我看到了一些你可能没有考虑到的东西。每个 if 块都会更改 和 的dir_x2值dir_y2。因此，下一个 if 块将使用这些修改后的值来评估其条件。例如，如果dir_x2, dir_y2在0, 5开头，则第一个 if 块可能会将其更改为5, 0. 但是，第三个 if 块的条件 ,dir_x2 == 5现在已经满足了，所以它也被执行并且可能dir_x2, dir_y2进一步变为0, -5。我想这可能不是你想要的。

如果是这个问题，解决办法就是把最后三个ifs改成elifs。现在每次运行这段代码时，最多会执行四个块中的一个。