Pygame似乎跳过了关于我是否再次单击的if语句

Question

在实现棋子移动功能的过程中，我创建了一个系统，该系统应：

1. 寻找一个点击
2. 查看是否单击了一块
3. 确定单击的是哪一块
4. 单击要移动到的正方形
5. 将所述块移动到所述正方形

我为此编写了以下代码：

        if event.type == pygame.MOUSEBUTTONDOWN and moving == False:
            mousepos = pygame.mouse.get_pos()
            roundedmouse1 = rounddown80(mousepos[0]) #function to found out what square was clicked
            roundedmouse2 = rounddown80(mousepos[1]) #function to found out what square was clicked
            mousecoords = [roundedmouse1,roundedmouse2]
            for key,value in piecepositionsdict.items():
                if int(value[0]) == int(mousecoords[0]) and int(value[1]) == int(mousecoords[1]):
                    x = coordstosquaredict[str(mousecoords)]
                    print("You have clicked",whatpiece(x),"on square",x)
                    print("Click a square to move the piece to:")
                    moving = True
                    time.sleep(0.5)
                    #this should be where the program stops until it gets another click
                    if event.type == pygame.MOUSEBUTTONDOWN and moving == True:
                        mousepos2 = pygame.mouse.get_pos()
                        roundedmouse21 = rounddown80(mousepos2[0])
                        roundedmouse22 = rounddown80(mousepos2[1])
                        mousecoords2 = [roundedmouse21, roundedmouse22]
                        print(mousecoords2)
                        print(piecepositionsdict[whatpiece(x)+"pos"])
                        piecepositionsdict[whatpiece(x)+"pos"] = mousecoords2
                        print(piecepositionsdict[whatpiece(x) + "pos"])

然而，程序直接通过了第二次点击检查，当我只点击一次时，它是如何打印出mousecoords 2等的

我做错了什么导致了这个错误

Answer 1

您的代码将在单个帧中运行，并且代码在该帧中仅注册一次单击。你需要有一个每次点击屏幕都会被调用的函数

请参见下面我的示例：

#Holder for the piece you have selected
currentPiece = piece

##Mouse click event/function##
if currentPiece == None:
    getPiece()
else:
    movePiece()

##Get piece function##
def getPiece():
    #Your function here which sets
    #currentPiece to what you selected.

##Move function##
    def movePiece():
    #Moves the currentPieece to the selected spot