我的问题是一堆变量，它们在程序工作期间增加了自己，这当然不应该发生。这里有代码解释（这很多代码，所以如果你有一些建议如何缩短它，会很感激），这是游戏Mastermind，这个整个代码的想法我现在正在努力，就是这种情况，当时你不能一次选择2种相同的颜色，所以如果你点击按钮，它将跳过所有采取的颜色，一直到下一个没有采取颜色（这个MOUSE_BUTTON_UP_ [颜色]是枚举类型，如果它很重要）：
void Button::handleEvent( SDL_Event* e)
{
int Switch=0;
int sprite=0;
int temp = 0;
//If mouse event happened
if( e->type == SDL_MOUSEMOTION || e->type == SDL_MOUSEBUTTONDOWN || e->type == SDL_MOUSEBUTTONUP )
{
//Get mouse position
int x, y;
SDL_GetMouseState( &x, &y );
//Check if mouse is in button
bool inside = true;
//Mouse is left of the button
if( x < mPosition.x )
{
inside = false;
}
//Mouse is right of the button
else if( x > mPosition.x + globals::BUTTON_WIDTH )
{
inside = false;
}
//Mouse above the button
else if( y < mPosition.y )
{
inside = false;
}
//Mouse below the button
else if( y > mPosition.y + globals::BUTTON_HEIGHT )
{
inside = false;
}
if(inside)
{
switch (e->type)
{
case SDL_MOUSEBUTTONDOWN:
Switch = Button::switchingBalls();
sprite = Button::getCurrentSprite();
if(sprite == 8)
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_RED;
if(Switch + sprite > 7)
{
temp = 7 - sprite;
switch (temp)
{
case 1:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_GREY;
break;
case 2:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_DBLUE;
break;
case 3:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_VIOLET;
break;
case 4:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_RED;
break;
}
break;
}
if(Switch == 0)
{
switch (sprite)
{
case 0:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_VIOLET;
break;
case 1:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_DBLUE;
break;
case 2:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_GREY;
break;
case 3:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_DGREEN;
break;
case 4:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LBLUE;
break;
case 5:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LGREEN;
break;
case 6:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_YELLOW;
break;
}
break;
}
else if(Switch == 1)
{
switch(sprite)
{
case 0:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_DBLUE;
break;
case 1:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_GREY;
break;
case 2:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_DGREEN;
break;
case 3:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LBLUE;
break;
case 4:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LGREEN;
break;
case 5:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_YELLOW;
break;
case 6:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_RED;
break;
}
break;
}
else if(Switch == 2)
{
switch(sprite)
{
case 0:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_GREY;
break;
case 1:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_DGREEN;
break;
case 2:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LBLUE;
break;
case 3:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LGREEN;
break;
case 4:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_YELLOW;
break;
case 5:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_RED;
break;
case 6:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_VIOLET;
break;
}
break;
}
else if(Switch == 3)
{
switch(sprite)
{
case 0:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_DGREEN;
break;
case 1:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LBLUE;
break;
case 2:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LGREEN;
break;
case 3:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_YELLOW;
break;
case 4:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_RED;
break;
case 5:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_VIOLET;
break;
case 6:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_DBLUE;
break;
}
break;
}
else if(Switch == 4)
{
switch(sprite)
{
case 0:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LBLUE;
break;
case 1:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LGREEN;
break;
case 2:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_YELLOW;
break;
case 3:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_RED;
break;
case 4:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_VIOLET;
break;
case 5:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_DBLUE;
break;
case 6:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_GREY;
break;
}
break;
}
break;
}
}
}
}
Button :: switchingBalls（）并不重要，没有问题。 Button :: getCurrentSprite（）返回当前选定的颜色（它是枚举类型中int的值）。
现在，我在main中有4个类“Button”对象，我检查每个对象是否有变化（有人点击它）然后发生上面的整个代码。 但是，无论当前选择哪种颜色（默认情况下将类构造函数定义为RED），它总是更改为黄色。 更有趣的是，当我切换手表，并试图弄清楚会发生什么时，一切正常。如果我将断点设置为此行：
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_RED;
break;
}
break;
}
if(Switch == 0)//breakpoint goes here
{
switch (sprite)
{
case 0:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_VIOLET;
一切正常，它工作正常（'精灵'值为0）。但是，如果我将断点设置为这一行：
case 5:
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_LGREEN;
break;
case 6://breakpoint goes here
mCurrentSprite = BUTTON_SPRITE_MOUSE_UP_YELLOW;
break;
有人能告诉我，这件事到底是怎么回事，我真的很绝望。我没有其他想法，如何编程，或者有什么问题。帮助！
答案 0 :(得分：0)
除去
int sprite=0;
并改变
sprite = Button::getCurrentSprite();
到
const int sprite = Button::getCurrentSprite();
并看看这会带你去哪里