Question

我正在尝试制作游戏，并且只想在使用rungame()之后才更新mouseClickHandler。

这就是我在runGame()中所做的：

 def runGame():
    global i,update,scoreDraw,questionA

    setInitialValues()
    drawObjects()

    if update == True:

        questionAsk()
        canvas.update()
        i += 1
        updateObjects()
        checkForCollisions()
        canvas.delete(scoreDraw,questionA)
        canvas.update()

这就是runGame()的作用：

def setInitialValues():
    global score, time, update, worldGIF


    score = 0
    time = 0
    update = True
    worldGIF = PhotoImage(file = "WorldMap.gif")

def drawObjects():

    global worldMap,scoreStart,questionAA

    worldMap = canvas.create_image(650, 400, image = worldGIF)
    scoreStart = canvas.create_text(500,600,text=score, font= 'Times 24', anchor = W, fill = "white")
    questionAA = canvas.create_text(400,700, text="Hello!", font= "Times 20", anchor = W,fill = "white")
    canvas.update()

def questionAsk():
    global x_coord, y_coord, country, question, i
    global question
    question = "Where is", country[i],"?"

def updateObjects():
    global scoreDraw, questionA
    roundScore = round(score)
    scoreDraw = canvas.create_text(500,600,text=roundScore, font= 'Times 24', anchor = W, fill = "white")
    questionA = canvas.create_text(400,700, text=question, font= "Times 20", anchor = W,fill = "white")
    canvas.update()

def mouseClickHandler( event ):
    global i, xMouse,yMouse,answerx,answery,score,distance,update
    canvas.delete(scoreStart,questionAA)
    xMouse = event.x
    yMouse = event.y
    answerx = x_coord[i]
    answery = y_coord[i]
    delta_x = abs(xMouse - answerx)
    delta_y = abs(yMouse - answery)
    distance = sqrt((delta_x)**2+(delta_y)**2)
    score = score + distance
    update = True

但是由于某些原因，它永远不会更新，只是没有检测到update = True中的mouseClickHandler语句。

其他：

x_coord, y_coord, country都是我之前制作并导入到这里的所有numpy数组。 worldGIF只是一张地图的图片。

所以tldr;我找不到在只有点击的情况下触发if update == True中runGame()部分的方法。

这些绑定在底部：

root.after( 0, runGame )

canvas.bind( "<Button-1>", mouseClickHandler )

canvas.bind( "<Key>", keyDownHandler )

canvas.bind( "<KeyRelease>", keyUpHandler )

canvas.pack()

canvas.focus_set()

Answer 1

如果您希望runGame每次鼠标单击都运行，则需要在mouseClickHandler中调用它（假设该函数绑定到click事件）

例如：

canvas.bind("<1>", runGame)

def mouseClickHandler( event ):
    global i, xMouse,yMouse,answerx,answery,score,distance,update
    ...
    update = True
    runGame()

但是...

我的猜测是，您不希望runGame每次单击都运行，而只希望if块中的代码运行。如果是这样，请将代码移到一个单独的块中，然后从mouseClickHander进行调用，并取消使用update变量。

例如：

def runGame():
    global i,scoreDraw,questionA
    setInitialValues()
    drawObjects()
    updateGame()

def updateGame():
    global i

    questionAsk()
    canvas.update()
    i += 1
    updateObjects()
    checkForCollisions()
    canvas.delete(scoreDraw,questionA)
    canvas.update()

def mouseClickHandler( event ):
    global i, xMouse,yMouse,answerx,answery,score,distance
    canvas.delete(scoreStart,questionAA)
    ...
    score = score + distance
    updateGame()

仅当发生点击事件时，如何才能更新tkinter游戏？

1 个答案:

但是...