c# – 2D XNA游戏鼠标点击

最简单的方法是检查每个帧的鼠标状态,并作出相应的反应.鼠标位置在一定区域内？显示不同的光标.在这个框架中按右按钮？显示菜单.等等

var mouseState = Mouse.GetState();

在屏幕坐标(相对于左上角)获取鼠标位置：

var mousePosition = new Point(mouseState.X,mouseState.Y);

鼠标在特定区域内时更改纹理：

Rectangle area = someRectangle;

// Check if the mouse position is inside the rectangle
if (area.Contains(mousePosition))
{
    backgroundTexture = hoverTexture;
}
else
{
    backgroundTexture = defaultTexture;
}

单击鼠标左键时执行某些操作：

if (mouseState.LeftButton == ButtonState.Pressed)
{
    // Do cool stuff here
}

记住,您将始终拥有当前框架的信息.所以当点击按钮的时候可能会发生很酷的事情,一旦发布就会停止.

要检查一次点击,您将不得不存储最后一帧的鼠标状态,并比较更改的内容：

// The active state from the last frame is now old
lastMouseState = currentMouseState;

// Get the mouse state relevant for this frame
currentMouseState = Mouse.GetState();

// Recognize a single click of the left mouse button
if (lastMouseState.LeftButton == ButtonState.Released && currentMouseState.LeftButton == ButtonState.Pressed)
{
    // React to the click
    // ...
    clickOccurred = true;
}

您可以使其更加先进,并与事件一起工作.所以你仍然会使用上面的代码片段,而不是直接包含动作的代码,你将触发事件：MouseIn,MouSEOver,MouSEOut. ButtonPush,ButtonPressed,ButtonRelease等