using UnityEngine;
using System.Collections;
public class DelegateMenu : MonoBehaviour
{
//we have to declare a delegate so that we can use it in the OnGUI function
private delegate void MenuDelegate();
//in order to use a delegate we need to create a variable of MenuDelegate type so that it can be used throughout the code.
private MenuDelegate menuFunction;
//these variables are only here because it is cheaper to access a value from memory instead of through a static class
private float screenHeight;
private float screenWidth;
private float buttonHeight;
private float buttonWidth;
// Use this for initialization
void Start ()
{
screenHeight = Screen.height;
screenWidth = Screen.width;
buttonHeight = screenHeight * 0.3f;
buttonWidth = screenWidth * 0.4f;
//here we set the menuFunction to point to the anyKey function, which is further down in the code
menuFunction = anyKey;
}
void OnGUI()
{
//in order to use a delegate we just call it like a function. Simple!
menuFunction();
}
//in order to change the GUI we just change the function that menuFunction points to. It will basically take care of itself from that point.
void anyKey()
{
//check if the user pressed anything, if it did, change the menuFunction to show the main menu
if(Input.anyKey)
{
menuFunction = mainMenu;
}
//this is just text in the center of the screen telling the user to press any key
GUI.skin.label.alignment = TextAnchor.MiddleCenter;
GUI.Label(new Rect(screenWidth * 0.45f, screenHeight * 0.45f, screenWidth * 0.1f, screenHeight * 0.1f), "Press any key to continue");
}
//mainMenu only has two buttons in the version, one to play the game, and one to quit the game
void mainMenu()
{
if(GUI.Button(new Rect((screenWidth - buttonWidth) * 0.5f, screenHeight * 0.1f, buttonWidth, buttonHeight), "Start Game"))
{
Application.LoadLevel("Level1");
}
if(GUI.Button(new Rect((screenWidth - buttonWidth) * 0.5f, screenHeight * 0.5f, buttonWidth, buttonHeight), "Quit Game"))
{
Application.Quit();
}
}
}
i dont understand what its trying to tell me
↧