Question

我的游戏中有一个按钮。当鼠标悬停在其上时，我想让它更改为其他按钮图像，当鼠标不在按钮中时，我想更改回来。

问题是当鼠标从按钮矩形区域退出时，它不会变回第一个图像

我的代码是这样的：

    public override void Update(GameTime gameTime)
    {
        base.Update(gameTime);

        MouseState mouseState;
        mouseDiBack = false;
        mouseState = Mouse.GetState();

        if (new Rectangle(mouseState.X, mouseState.Y, 1, 1).Intersects(backButtonRectangle))
        {
            backButton = backButtonHilite;
        }

        if ((mouseState.LeftButton == ButtonState.Pressed) &&
            (new Rectangle(mouseState.X, mouseState.Y, 1, 1).Intersects(backButtonRectangle)))
        {
            mouseDiBack = true;
        }




    }

    public override void Draw(GameTime gameTime)
    {

        spriteBatch.Draw(ScoreBG, ScoreBGRectangle, Color.White);
        spriteBatch.Draw(backButton, backButtonRectangle, Color.White);


        base.Draw(gameTime);

    }
}
}

任何想法我怎么做......？

Answer 1

您没有将backButton设置回鼠标移出示波器区域时的状态。请查看下面的代码，并注意Update函数中添加的ELSE语句。

 defaultBackButton = backButton;   //Save the default back button somewhere outside your update function

public override void Update(GameTime gameTime)
    {
        base.Update(gameTime);

        MouseState mouseState;
        mouseDiBack = false;
        mouseState = Mouse.GetState();

        if (new Rectangle(mouseState.X, mouseState.Y, 1,1).Intersects(backButtonRectangle))
        {
            backButton = backButtonHilite;
        }
        else 
        {
            backButton = defaultBackButton;
        }


        if ((mouseState.LeftButton == ButtonState.Pressed) && (new Rectangle(mouseState.X, mouseState.Y, 1, 1).Intersects(backButtonRectangle)))
        {
            mouseDiBack = true;
        }
    }

Answer 2

如Jon所说，当鼠标离开矩形时，你需要设置原始纹理。

bool mouseOverBackButton = 
    mouseX >= buttonRectangle.Left && mouseX <= buttonRectangle.Right && 
    mouseY >= buttonRectangle.Top && mouseY <= buttonRectangle.Bottom;

backgroundTexture = mouseOverBackButton ? mouseOverTexture: mouseAwayTexture;
mouseDiBack = mouseState.LeftButton == ButtonState.Pressed && mouseOverBackButton;

Answer 3

相当简单的解决方案，您没有将图像设置回鼠标未悬停的情况。

       if (new Rectangle(mouseState.X, mouseState.Y, 1, 1).Intersects(backButtonRectangle))
       {
           backButton = backButtonHilite;
       }
       else
       {
          backButton = originalImage; //whatever your Texture2D object may be called
       }

不要指望机器知道您想要切换回来！机器很蠢！ ..Ok，实际上是因为你覆盖了变量的值而没有重置它。

XNA按钮悬停

3 个答案: