FarmlandModel.java

/* Copyright (c) 2012 Jesper Öqvist <jesper@llbit.se>
 *
 * This file is part of Chunky.
 *
 * Chunky is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Chunky is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with Chunky.  If not, see <http://www.gnu.org/licenses/>.
 */
package se.llbit.chunky.model;

import se.llbit.chunky.resources.Texture;
import se.llbit.math.AABB;
import se.llbit.math.Ray;

public class FarmlandModel {
  protected static AABB block = new AABB(0, 1, 0, 1, 0, 1);

  private static final Texture[] tex =
      {Texture.farmlandDry, Texture.farmlandWet, Texture.farmlandWet, Texture.farmlandWet,
          Texture.farmlandWet, Texture.farmlandWet, Texture.farmlandWet, Texture.farmlandWet,
          Texture.farmlandWet,};

  public static boolean intersect(Ray ray) {
    ray.t = Double.POSITIVE_INFINITY;
    if (block.intersect(ray)) {
      if (ray.n.y == 1) {
        tex[ray.getBlockData() % 9].getColor(ray);
      } else {
        Texture.dirt.getColor(ray);
      }
      ray.color.w = 1;
      ray.distance += ray.tNext;
      ray.o.scaleAdd(ray.tNext, ray.d);
      return true;
    }
    return false;
  }
}