TextureManager.java

/*
 */
package org.cognitive;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.newdawn.slick.opengl.Texture;
import org.newdawn.slick.opengl.TextureLoader;

/**
 *
 * @author Kristoffer Berdal <[email protected]>
 * @studnr 180212
 * @date Mar 3, 2012
 */
public class TextureManager {
  private List<SpriteSheet> sheets = new ArrayList<SpriteSheet>();
  private List<Sprite> sprites = new ArrayList<Sprite>();
  
  public TextureManager() {
  }

  public int load(int dimension_x, int dimension_y, String filename) {
    SpriteSheet sheet = new SpriteSheet(dimension_x, dimension_y, filename);
    sheets.add(sheet);
    return sheets.size(); // Returns the spritesheets ID (or some other genious plan).
  }
  
  public void define(String name, int x, int y) {
    Sprite sprite = new Sprite(sprites.size()+1, name, x, y); // 
    sprites.add(sprite);
  }
  public Texture getByName(String name) {
    for (Sprite sprite : sprites) {
      if (sprite.getName().equals(name)) return sheets.get(sprite.getSheetID()).getSprite(sprite.getX(), sprite.getY());
    }
    return null;
  }
  
  private class SpriteSheet {
    private Texture sheet;
    
    public SpriteSheet(int dimension_x, int dimension_y, String filename) {
      sheet = load(filename);
    }

    public final Texture load(String textureName) {
      try {
        Texture texture = TextureLoader.getTexture("PNG", getClass().getResourceAsStream("/res/" + textureName + ".png"));
        return texture;
      } catch (IOException ex) {
        Logger.getLogger(ScrollGame.class.getName()).log(Level.SEVERE, null, ex);
      }
      return null;
    }
    
    public Texture get() {
      return this.sheet;
    }

    private Texture getSprite(int x, int y) {
      return null; // TODO: INSERT SENSE HERE?
    }
  }

  
  private static class Sprite {
    private String name;
    private int offset_x;
    private int offset_y;
    private int sheetID;
    
    
    public Sprite(int sheetID, String name, int x, int y) {
      this.sheetID = sheetID;
      this.name = name;
      this.offset_x = x;
      this.offset_y = y;
    }

    public String getName() {
      return name;
    }

    public int getX() {
      return offset_x;
    }

    public int getY() {
      return offset_y;
    }

    private int getSheetID() {
      return sheetID;
    }
  }
}