OnTouchBegin()

Touches are handled as events in UrhoSharp, and this means that they require event handlers. Let's create a handler for the TouchBegin event by going through the following steps:

1. In the WhackABox project, open the Game.cs file.
2. Add the OnTouchBegin() method anywhere in the code, as shown in the following code snippet:

private void OnTouchBegin(TouchBeginEventArgs e)
{
    var x = (float)e.X / Graphics.Width;
    var y = (float)e.Y / Graphics.Height;
 
    DetermineHit(x, y);
}

When a touch is registered, this method will be called, and information about that touch event will be sent as a parameter. This parameter has an X and a Y property that represent the point on the screen that we have touched. Since the DetermineHit() method wants the values in the range of 0 to 1, we need to divide the X and Y coordinates by the width and height of the screen.

Once that is done, we call the DetermineHit() method. To complete this section, we...