carlmw/gitlactica

module.exports = function () {
  var locations = {},
      orbits = {};

  return function orbitShip (animation, renderer, login, planet, next) {
    if (planet === locations[login]) return next();
    if (orbits[login]) orbits[login].stop();
    renderer.rotateShip(login, 0, 0, 0);
    locations[login] = planet;
    var planetPos = renderer.planetPosition(planet),
        moveTo = animation.tween(
          { x: planetPos.x, y: planetPos.y + 25000, z: planetPos.z },
          { x: planetPos.x, y: planetPos.y, z: planetPos.z }, 2e3, function () {
            renderer.moveShip(login, this.x, this.y, this.z);
          },
          function () {
            log('Ship ' + login + ' orbiting ' + planet);
            animation.wait(5e3, next);
          }
        );

    var orbit = orbits[login] = animation.tween(
      { z: 0 },
      { z: -Math.PI * 2 }, 64e3,
      function () {
        renderer.rotateShip(login, 0, 0, this.z);
      }
    ).repeat(Number.POSITIVE_INFINITY);

    moveTo.chain(orbit);
    moveTo.start();
  };
};