python - pygame 中的命中检测

Question

我正在尝试在 pygame 中制作一个目标训练器。然而，当我点击敌人时，程序不会执行击中(我不认为)我可以听到声音，但敌人并没有消失。当我单击目标时，它应该消失，并在屏幕上生成一组新的目标。我对编码非常陌生，因此非常感谢任何帮助。

def game(difficulty):
    config = populateConfig(difficulty)

    pygame.mouse.set_visible(False)

    mouseY = (WINDOWHEIGHT / 2)
    mouseX = (WINDOWWIDTH / 2) 




    pointerImg_rect = pointerImg.get_rect()

    tickCounter = 0
    enemies = []
    amountOfEnemies = 0
    score = 0
    FPS = 75
    hitShots = 0
    totalShots = 0
    STARTINGTIME = config.get("time")
    CIRCLERADIUS = 150
    while True:
        if(config.get("time") <= 0):
            gameOver(totalShots, hitShots, difficulty, score)
        tickCounter += 1
        if(tickCounter % FPS == 0):
            config["time"] -= 1
        windowSurface.fill(WHITE)

        if (amountOfEnemies == 0):
            config["time"] = STARTINGTIME
            while(amountOfEnemies != config.get("maxAmountOfEnemies")):
                enemies.append(pygame.Rect((random.randint(0,WINDOWWIDTH - config.get("enemySize"))),
                                           (random.randint(0,WINDOWHEIGHT - config.get("enemySize"))),
                                           config.get("enemySize"), config.get("enemySize")))
                if enemies[amountOfEnemies].topleft[0] < 135 and enemies[amountOfEnemies].topleft[1] < 65:
                    enemies.pop(amountOfEnemies)
                else:
                    amountOfEnemies += 1
        for event in pygame.event.get():
            if event.type == QUIT:
                terminate()
            if event.type == KEYDOWN:
                pass
            if event.type == KEYUP:
                if event.key == K_ESCAPE:
                    terminate()
            if event.type == MOUSEMOTION:
                pointer_rect.center = event.pos
            if event.type == MOUSEBUTTONDOWN:
                pygame.mixer.Channel(0).play(shootSound)
                totalShots += 1
                for enemy in enemies[:]:
                    if mouseX > enemy.topleft[0] and mouseX < enemy.bottomright[0]\  **this is the issue*
                       and mouseY > enemy.topleft[1] and mouseY < enemy.bottomright[1]:

                        pygame.mixer.Channel(1).play(hitSound)

                        enemies.remove(enemy)
                        amountOfEnemies -= 1
                        score += 1
                        hitShots += 1




        for enemy in enemies:
            windowSurface.blit(targetImage, enemy)
            windowSurface.blit(pointerImg, pointer_rect)

        drawText("Time: " + str(config.get("time")), windowSurface, 8,8)
        drawText("Score: " + str(score), windowSurface, 8,38)
        pygame.display.update()
        mainClock.tick(FPS)
Menu()```

Answer 1

MOUSEBUTTONDOWN 事件有一个 pos 属性，其中包含按下按钮时鼠标光标的位置。

使用它来代替 mouseX 和 mouseY (您永远不会更新到当前鼠标位置，因此毫无用处)。

此外，由于 enemies 是 Rect 实例的列表，因此您可以利用此类的一些方便的函数，例如 collidepoint .

所以你的代码可能如下所示:

...
for enemy in enemies[:]:
    if enemy.collidepoint(event.pos):
        pygame.mixer.Channel(1).play(hitSound)
...