Android Open Source - thread-android Road

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License

The source code is released under:

Copyright (c) 2012 Chris Gauthier, http://www.wordsaretoys.com Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "S...

Java Source Code

package com.wordsaretoys.thread;
// w  w  w.  ja  va 2  s.  com
import android.opengl.GLES20;

import com.wordsaretoys.soar.Camera;
import com.wordsaretoys.soar.Mesh;
import com.wordsaretoys.soar.Shader;

/**
 * maintains road surface model and
 * GL objects representing it
 * 
 * @author chris
 *
 */
public class Road {
  
  private Camera camera;
  private Shader shader;
  private World world;
  
  private Mesh mesh;
  private Textures textures;
  private Mesh.Iterator2D iter;
  
  private int modelviewId;
  private int projectorId;
  private int walk0Id;
  private int walk1Id;
  private int line0Id;
  private int cros0Id;
  
  /**
   * constructor, generates road model
   * @param camera player camera
   * @param textures textures object
   */
  public Road(Camera camera, Textures textures, World world) {
    this.camera = camera;
    this.textures = textures;
    this.world = world;
  }
  
  /**
   * generates GL objects
   */
  public void makeGL() {
    shader = new Shader();
        shader.build(
          Shader.getText(Main.display.context, R.raw.vs_general),
          Shader.getText(Main.display.context, R.raw.fs_materials) +
          Shader.getText(Main.display.context, R.raw.fs_fog) +
          Shader.getText(Main.display.context, R.raw.fs_road)
        );

        modelviewId = shader.getUniformId("modelview");
        projectorId = shader.getUniformId("projector");
        walk0Id = shader.getUniformId("walk0");
        walk1Id = shader.getUniformId("walk1");
        line0Id = shader.getUniformId("line0");
        cros0Id = shader.getUniformId("cros0");
        
        mesh = new Mesh();
        mesh.add(shader.getAttributeId("position"), 3);
        mesh.add(shader.getAttributeId("texture"), 2);
        mesh.retain = true;

        iter = new Mesh.Iterator2D(mesh, 2, 64, false);

  }
  
  public void update(double pz) {
    mesh.reset();
    iter.reset();
    
    while(!iter.done()) {
      double xr = iter.ir;
      double zr = iter.jr;
      double z = pz + (zr - 0.5) * 16;
      double y = world.roadHeight(z);
      double x = world.cliffSurface(y, z) + xr - 0.5;
      mesh.set(x, y, z, xr, z % 1);
      iter.next();
    }
  }
  
  public void updateGL() {
    mesh.build();
  }
  
  public void drawGL() {
    GLES20.glDisable(GLES20.GL_BLEND);
    GLES20.glEnable(GLES20.GL_CULL_FACE);
    GLES20.glCullFace(GLES20.GL_BACK);
        shader.activate();
        GLES20.glUniformMatrix4fv(modelviewId, 1, false, camera.modelview, 0);
        GLES20.glUniformMatrix4fv(projectorId, 1, false, camera.projector, 0);
        textures.walk0.bind(0, walk0Id);
        textures.walk1.bind(0, walk1Id);
        textures.lines.bind(0, line0Id);
        textures.cross.bind(0, cros0Id);
        mesh.draw();
  }
}

Java Source Code List

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