se.llbit.chunky.model.TripwireHookModel Maven / Gradle / Ivy

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Minecraft mapping and rendering tool
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/* Copyright (c) 2012 Jesper Öqvist 
 *
 * 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 .
 */
package se.llbit.chunky.model;

import se.llbit.chunky.resources.Texture;
import se.llbit.math.AABB;
import se.llbit.math.Quad;
import se.llbit.math.Ray;
import se.llbit.math.Vector3;
import se.llbit.math.Vector4;

public class TripwireHookModel {
  private static final AABB boxNorth = new AABB(6 / 16., 10 / 16., 1 / 16., 9 / 16., 0, 2 / 16.);

  private static final AABB[] box = new AABB[4];

  private static final Quad[] armQuads = {
      // north
      new Quad(new Vector3(9 / 16., 7 / 16., 0), new Vector3(7 / 16., 7 / 16., 0),
          new Vector3(9 / 16., 9 / 16., 0), new Vector4(9 / 16., 7 / 16., 0, 2 / 16.)),

      // south
      new Quad(new Vector3(7 / 16., 7 / 16., .5), new Vector3(9 / 16., 7 / 16., .5),
          new Vector3(7 / 16., 9 / 16., .5), new Vector4(7 / 16., 9 / 16., 0, 2 / 16.)),

      // west
      new Quad(new Vector3(7 / 16., 9 / 16., 0), new Vector3(7 / 16., 7 / 16., 0),
          new Vector3(7 / 16., 9 / 16., .5), new Vector4(7 / 16., 9 / 16., 0, 7 / 16.)),

      // east
      new Quad(new Vector3(9 / 16., 9 / 16., .5), new Vector3(9 / 16., 7 / 16., .5),
          new Vector3(9 / 16., 9 / 16., 0), new Vector4(9 / 16., 7 / 16., 7 / 16., 0)),

      // top
      new Quad(new Vector3(9 / 16., 9 / 16., 0), new Vector3(7 / 16., 9 / 16., 0),
          new Vector3(9 / 16., 9 / 16., .5), new Vector4(7 / 16., 9 / 16., 0, 7 / 16.)),

      // bottom
      new Quad(new Vector3(7 / 16., 7 / 16., 0), new Vector3(9 / 16., 7 / 16., 0),
          new Vector3(7 / 16., 7 / 16., .5), new Vector4(7 / 16., 9 / 16., 0, 7 / 16.)),};

  private static final Quad[] hookQuads = {
      // north
      new Quad(new Vector3(9.5 / 16., 7.75 / 16., 6.5 / 16.),
          new Vector3(6.5 / 16., 7.75 / 16., 6.5 / 16.),
          new Vector3(9.5 / 16., 8.25 / 16., 6.5 / 16.),
          new Vector4(11 / 16., 5 / 16., 11 / 16., 13 / 16.)),

      // south
      new Quad(new Vector3(6.5 / 16., 7.75 / 16., 9.5 / 16.),
          new Vector3(9.5 / 16., 7.75 / 16., 9.5 / 16.),
          new Vector3(6.5 / 16., 8.25 / 16., 9.5 / 16.),
          new Vector4(5 / 16., 11 / 16., 7 / 16., 9 / 16.)),

      // west
      new Quad(new Vector3(6.5 / 16., 8.25 / 16., 6.5 / 16.),
          new Vector3(6.5 / 16., 7.75 / 16., 6.5 / 16.),
          new Vector3(6.5 / 16., 8.25 / 16., 9.5 / 16.),
          new Vector4(5 / 16., 7 / 16., 7 / 16., 13 / 16.)),

      // east
      new Quad(new Vector3(9.5 / 16., 8.25 / 16., 9.5 / 16.),
          new Vector3(9.5 / 16., 7.75 / 16., 9.5 / 16.),
          new Vector3(9.5 / 16., 8.25 / 16., 6.5 / 16.),
          new Vector4(11 / 16., 9 / 16., 13 / 16., 7 / 16.)),

      // top
      new Quad(new Vector3(9.5 / 16., 8.25 / 16., 6.5 / 16.),
          new Vector3(6.5 / 16., 8.25 / 16., 6.5 / 16.),
          new Vector3(9.5 / 16., 8.25 / 16., 9.5 / 16.),
          new Vector4(5 / 16., 11 / 16., 7 / 16., 13 / 16.)),

      // bottom
      new Quad(new Vector3(6.5 / 16., 7.75 / 16., 6.5 / 16.),
          new Vector3(9.5 / 16., 7.75 / 16., 6.5 / 16.),
          new Vector3(6.5 / 16., 7.75 / 16., 9.5 / 16.),
          new Vector4(5 / 16., 11 / 16., 7 / 16., 13 / 16.)),};

  private static final Quad[][][] arm = new Quad[4][4][];
  private static final Quad[][][] hook = new Quad[4][4][];

  static {
    box[0] = boxNorth;
    box[1] = box[0].getYRotated();
    box[2] = box[1].getYRotated();
    box[3] = box[2].getYRotated();

    // unarmed
    arm[0][0] = Model.translate(Model.rotateX(armQuads, -Math.PI / 4), 0, 3.3 / 16., -1.3 / 16.);
    hook[0][0] = Model.translate(Model.rotateX(hookQuads, Math.PI / 4), 0, 2.3 / 16., -.6 / 16);

    // armed
    arm[0][1] = Model.translate(Model.rotateX(armQuads, Math.PI / 25), 0, -2.5 / 16., 0);
    hook[0][1] = Model.translate(Model.rotateX(hookQuads, Math.PI / 16), 0, -2.3 / 16., 1 / 16.);

    // tripped
    arm[0][2] = Model.translate(Model.rotateX(armQuads, Math.PI / 8), 0, -5 / 16., 0);
    hook[0][2] = Model.translate(hookQuads, 0, -4.1 / 16., 1 / 16.);

    arm[0][3] = arm[0][2];
    hook[0][3] = hook[0][2];

    for (int i = 1; i < 4; ++i) {
      for (int j = 0; j < 4; ++j) {
        arm[i][j] = Model.rotateY(arm[i - 1][j]);
        hook[i][j] = Model.rotateY(hook[i - 1][j]);
      }
    }
  }

  public static boolean intersect(Ray ray) {
    int data = ray.getBlockData();
    int direction = data & 3;
    boolean hit = false;
    ray.t = Double.POSITIVE_INFINITY;
    if (box[direction].intersect(ray)) {
      ray.t = ray.tNext;
      Texture.oakPlanks.getColor(ray);
      ray.color.w = 1;
      hit = true;
    }

    for (Quad quad : arm[direction][data >> 2]) {
      if (quad.intersect(ray)) {
        float[] color = Texture.tripwireHook.getColor(ray.u, ray.v);
        if (color[3] > Ray.EPSILON) {
          ray.color.set(color);
          ray.t = ray.tNext;
          ray.n.set(quad.n);
          hit = true;
        }
      }
    }
    for (Quad quad : hook[direction][data >> 2]) {
      if (quad.intersect(ray)) {
        float[] color = Texture.tripwireHook.getColor(ray.u, ray.v);
        if (color[3] > Ray.EPSILON) {
          ray.color.set(color);
          ray.t = ray.tNext;
          ray.n.set(quad.n);
          hit = true;
        }
      }
    }
    if (hit) {
      ray.distance += ray.t;
      ray.o.scaleAdd(ray.t, ray.d);
    }
    return hit;
  }
}