返回列表中我将鼠标位置与python中的坐标匹配的部分

Question

我正在制作一个国际象棋程序，因此需要该程序来告诉我我点击了什么棋子。到目前为止，它告诉我是否点击过任何一个工件，方法是将鼠标x和y坐标与当前工件坐标列表匹配。然而，该程序不知道我点击了哪一块，我想知道使用while循环是否可以在找到一块时结束循环，并打印/存储我在列表中找到匹配块时的部分到我的鼠标坐标

目前我已经有了这段代码，这应该是解决我的问题的一个很好的起点

        if event.type == pygame.MOUSEBUTTONDOWN:
            mousepos = pygame.mouse.get_pos()
            #rounddown80 is a function to round down mouse coords to multiple of 80
            roundedmouse1 = roundup80(mousepos[0])
            roundedmouse2 = roundup80(mousepos[1])
            #print(roundedmouse1,roundedmouse2)
            mousecoords = [roundedmouse1,roundedmouse2]
            #print(mousecoords)
            foundpiece = False
            while foundpiece == False:
                for x in piecespositions:
                    if x[0] == mousecoords[0] and x[1] == mousecoords[1]:
                        print("Great job you clicked a piece")
                        foundpiece = True

我的计件清单看起来像

piecespositions = [queenblackpos,kingblackpos,bishop1blackpos,bishop2blackpos,knight1blackpos,knight2blackpos, 

等，例如queenblackpos将为[80160]

Answer 1

您可以在for i in range(0,len(piecepositions))中或使用增加的变量跟踪while循环中的哪一部分。 例如，类似这样的事情：

  while foundpiece == False:
    index=0 #Reset index before checking all pieces
    for x in piecespositions:
        if x[0] == mousecoords[0] and x[1] == mousecoords[1]:
                 print("Great job you clicked a piece")
                 foundpiece = True
        
                 found_pos=x #store position of the piece that was found
           index=index+1 #Keep adding to index to know which piece was found
    pygame.display.flip() #Update the window 
  print (f"Piece found in {index}: {found_pos}") #print the position of the piece as well as what is its index in the list.

这将存储在found_pos中找到的工件的位置，并使用index变量跟踪当前正在检查的工件。while循环结束后，它将打印工件的位置和列表中该工件的索引

但请注意，在while循环期间，脚本将被“卡住”，直到while完成，因此在计件检查期间无法更新窗口，因此游戏将冻结。所以要解决这个问题，必须在while中添加pygame.display.flip()