HW4

by Alan Lin

HTML

<div id="info">Game Programming
  <br/>Homework 4
</div>
<div id="steerturn">
Group steer: Open
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r70/three.min.js"></script>
<script src="https://dl.dropboxusercontent.com/u/3587259/Code/Threejs/OrbitControls.js">
</script>
<script src="https://jyunming-chen.github.io/tutsplus/js/KeyboardState.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.5/dat.gui.min.js"></script>

CSS

#info {
  position: absolute;
  top: 0px;
  width: 100%;
  padding: 10px;
  text-align: center;
  color: #ff00ff
}
#steerturn{
  position: absolute;
  top: 10%;
  width: 100%;
  padding: 10px;
  text-align: center;
  color: #ffff00
}


body {
  overflow: hidden;
}

JavaScript

var camera, scene, renderer, controls;
var puck;
var agent;
var angle = 0;
var targetCatch = false;
var targetOmega = 0.3;
var raycaster;
var mouse = new THREE.Vector2();
var pickables = [];
var obj = new Array(5);


var mass = 1;
var clock = new THREE.Clock();

var obCen = new THREE.Vector3(50, 0, 10);
var obCen2 = new THREE.Vector3(-50, 0, -30);
var obCen3 = new THREE.Vector3(-10, 0, 50);
var obRad = 30,
  obRad2 = 20;

var obstacle = new Array(3);

var steerturn = true;
var keyboard = new KeyboardState();

var target = new THREE.Vector3();

var Agent = function(mesh, initPos) {
  this.pos = new THREE.Vector3();
  if (initPos) this.pos.copy(initPos);

  this.vel = new THREE.Vector3();
  this.force = new THREE.Vector3();
  this.target = new THREE.Vector3();
  this.angle = 0;
  this.mesh = mesh;
  this.maxSpeed = 60;
  this.maxForce = 60;

  this.setTarget = function(target) {
    this.target.copy(target);
  }

  this.update = function(dt) {
    // compute force
    this.force = this.target.clone().sub(this.pos).setLength(this.maxSpeed).sub(this.vel);

    // collision avoidance
    // (for each obstacle)

    var tmp = obCen.clone().sub(this.pos);
    var tmpProj = tmp.clone().projectOnVector(this.vel);

    if (tmp.dot(this.vel) > 0) {
      if (tmpProj.clone().sub(tmp).length() < obRad + 3) {
        if (tmpProj.length() < 5 * this.vel.length()) {
          //console.log ('block & close');
          this.force.add(tmpProj.clone().sub(tmp).multiplyScalar(2));
        }
      }
    }

    var tmp2 = obCen2.clone().sub(this.pos);
    var tmpProj2 = tmp2.clone().projectOnVector(this.vel);

    if (tmp2.dot(this.vel) > 0) {
      if (tmpProj2.clone().sub(tmp2).length() < obRad + 3) {
        if (tmpProj2.length() < 5 * this.vel.length()) {
          //console.log ('block & close');
          this.force.add(tmpProj2.clone().sub(tmp2).multiplyScalar(2));
        }
      }
    }

    var tmp3 = obCen3.clone().sub(this.pos);
    var tmpProj3 =...