Question

我正在为班级的最后一个项目制作游戏，由于某种原因，当我在列表中时，我无法检查rect对象的click事件。如果我使用for循环遍历Opened_Pack列表并尝试单击它，那么什么也不会发生（这是我在下面的代码）。当我使用索引（[0]，[1]等）进行尝试时，无论我使用多少数字或列表有多大，都会出现索引超出范围错误。所以我想我的问题是：有没有一种方法可以检查是否单击了rect数据是否存储在列表中？我敢肯定，必须存在，但我无法弄清楚。

Opened_Pack = []
Pack_Card_Recs = []

for event in pygame.event.get():
    mouse = pygame.mouse.get_pos()

    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_ESCAPE:
            window = pygame.display.set_mode((850,850), pygame.RESIZABLE)
            #Key Bindings to open Packs, WILL BE REPLACED WITH CLICKS (eventually)
        if event.key == pygame.K_r:
            Opened_Pack = TwoPlayerPack.Open()
            Pack_Card_Recs = [Opened_Pack[i].getRect() for i in range(len(Opened_Pack))]
            #print(Pack_Card_Recs[0])
        elif event.key == pygame.K_e:
            Opened_Pack= SixPlayerPack.Open()
            Pack_Card_Recs = [Opened_Pack[i].getRect() for i in range(len(Opened_Pack))]
        elif event.key == pygame.K_t:
            Opened_Pack = SevenPlayerPack.Open()
            Pack_Card_Recs = [Opened_Pack[i].getRect() for i in range(len(Opened_Pack))]
        elif event.key == pygame.K_u:
            Opened_Pack= FourPlayerPack.Open()
            Pack_Card_Recs = [Opened_Pack[i].getRect() for i in range(len(Opened_Pack))]

    if event.type == pygame.MOUSEBUTTONDOWN:
        x, y = event.pos
        for i in range(len(Opened_Pack)):
            if Pack_Card_Recs[i].collidepoint(x,y):
                print("Clicked Player at index: " + str(i))

    if event.type == pygame.QUIT:
        run = False

Answer 1

代码的迭代长度为Opened_Pack，而所讨论的矩形存储在列表Pack_Card_Recs中。只需修改循环范围即可解决该问题。

if event.type == pygame.MOUSEBUTTONDOWN:
    x, y = event.pos
    print( "%d rectangles to check" % ( len( Pack_Card_Recs ) ) )
    for i in range( len( Pack_Card_Recs ) ):             # <-- HERE, not Opened_Pack
        r = Pack_Card_Recs[i]
        print( "Is point (%d, %d) inside Rect #%d [%d, %d, %d x %d]" % ( x, y, i, r.x, r.y, r.width, r.height ) )
        if r.collidepoint( x,y ):
            print( "Clicked Player at index: " + str( i ) )

编辑：添加了一堆调试代码

Answer 2

这两个列表都是在主while循环内创建的，因此，很显然，游戏更新的每一帧都会重新创建列表。我只是将它们移到主循环之外，现在效果很好。

给定一个Rect对象列表，是否可以检查MOUSBUTTONDOWN事件？

2 个答案: