Displaying the achievements on screen

Just as we did with the stats, we will have a new menu for achievements. First, we'll start by adding a couple of variables:

public bool showAchievements = false;
public Rect achRect = new Rect(Screen.width / 2, Screen.height / 2, 700, 700);

Adding the GUI functions

Now, we will add the functions to show the achievements on the screen. The first function is the OnGUI function, which we will add now:

void OnGUI()
{
  if(showAchievements)
  {
    achRect = GUI.Window(0, achRect, AchGUI, "Achievements");
  }
}

Just as in the stats menu, we check whether we want to show the achievements menu. If we do it, is shown on screen; if not, we hide it.

Next, we will add the AchGUI function that is being called in the OnGUI function. This is a large function, but it will allow us to show the achievements that we need. It is similar to the stat menu, except we will show buttons instead of a number. We use buttons just as a proof of concept; normally, you would use an image...