Hud.java

package it.marteEngine.game.starcleaner;

import it.marteEngine.ResourceManager;
import it.marteEngine.entity.Entity;

import org.newdawn.slick.Color;
import org.newdawn.slick.Font;
import org.newdawn.slick.GameContainer;
import org.newdawn.slick.Graphics;
import org.newdawn.slick.Input;
import org.newdawn.slick.SlickException;
import org.newdawn.slick.geom.RoundedRectangle;

/**
 * The HUD class responsible for showing score and so on. Also the Game Maker
 * like controller class which deals with input that should be handled for the
 * world. This way we avoid adding input dealing code to the WorldGameState
 * class. Just add some visible or invisible controller class to your world and
 * handle input there.
 * 
 * @author Thomas
 * 
 */
public class Hud extends Entity {

	private static final String CMD_NEXT = "nextLevel";
	private static final String CMD_PREVIOUS = "previousLevel";

	private Font font;

	public Hud(float x, float y) {
		super(x, y);
		this.name = "HUD";
		this.depth = 400;
		this.font = ResourceManager.getFont("bradleyhanditc24");

		this.define(CMD_NEXT, Input.KEY_N);
		this.define(CMD_PREVIOUS, Input.KEY_P);
	}

	public void render(GameContainer container, Graphics g)
			throws SlickException {
		IngameState state = (IngameState) this.world;
		RoundedRectangle r = new RoundedRectangle(x, y,
				container.getWidth() - 1, 40, 20);
		Color c = Color.blue;
		c.a = 0.3f;
		Font oldFont = g.getFont();
		g.setFont(font);
		g.setColor(c);
		g.fill(r);
		g.draw(r);
		g.setColor(Color.white);
		g.drawString("Score: " + state.score, x + 5, y + 1);
		g.drawString("Seconds left: " + state.timeLeft, x + 205, y + 1);
		g.drawString("Stars left: " + state.getNrOfEntities(Star.STAR_TYPE),
				x + 465, y + 1);

		g.setFont(oldFont);

	}

	public void update(GameContainer container, int delta)
			throws SlickException {
		if (check(CMD_NEXT)) {
			Globals.levelDone = true;
			Globals.playerCheated = true;
		}
		if (check(CMD_PREVIOUS)) {
			IngameState state = (IngameState) this.world;
			state.levelNo -= 2;
			if (state.levelNo < 0)
				state.levelNo = 0;
			Globals.levelDone = true;
			Globals.playerCheated = true;
		}

	}
}