package model;

import java.awt.Graphics2D;
import java.awt.event.KeyEvent;
import java.util.ArrayList;
import java.util.List;

import model.state.EndState;
import model.state.MenuState;
import model.state.PlayState;
import model.state.State;

public class GameStateManager {

	private List<State> gamestates;
	private State currentState;
	
	public GameStateManager(){
		gamestates = new ArrayList<State>();
		
		gamestates.add(new MenuState(this));
		gamestates.add(new PlayState(this));
		gamestates.add(new EndState(this));
		
		currentState = gamestates.get(0);
	}
	
	public void setState(String name)
	{
		for(State s : gamestates)
		{
			if(s.getName() == name)
			{
				changeState(s);
				return;
			}
		}
	}
	
	private void changeState(State st)
	{
		if(! currentState.equals(st))
		{
			currentState.exit();
			currentState = st;
			currentState.init();
		}
	}
	
	public void update(){		
		currentState.update();
	}
	
	public void paint(Graphics2D g2d)
	{
		currentState.paint(g2d);
	}
	
	public void keyPressed(KeyEvent e)
	{
		currentState.keyPressed(e);
	}
	public void keyReleased(KeyEvent e)
	{
		currentState.keyReleased(e);
	}
	public void keyTyped(KeyEvent e)
	{
		currentState.keyTyped(e);
	}
}