window.gameState = {};
window.controller = {};

gameState.paused = false;
gameState.playing = false;
gameState.over = false;
gameState.ruin = 0;
gameState.phase = "p1";
gameState.flow = "freeLook";

gameState.ticker = new Date();
gameState.frame = new Date();

controller.up = false;
controller.down = false;
controller.right = false;
controller.left = false;
controller.start = false;
controller.q = false;
controller.w = false;
controller.x = false;
controller.y = false;
controller.z = false;

function isEmptyObject(obj)
{
  var name;
  for (name in obj)
  {
    if (obj.hasOwnProperty(name))
    {
      return false;
    }
  }
  return true;
}

function dist(a, b)
{
  return Math.sqrt(Math.pow(a.x - b.x, 2) + Math.pow(a.y - b.y, 2));
}

function xDist(a, b)
{
  return Math.abs(a.x - b.x);
}

function yDist(a, b)
{
  return Math.abs(a.y - b.y);
}

function endPhase()
{
  var i, totalE, tm;
  totalE = 0;
  switch(gameState.phase)
  {
    case "p1":
      tm = teams.p1;
      gameState.phase = "cpu";
      resetFlow();
      break;
    case "cpu":
      tm = teams.cpu;
      gameState.phase = "p1";
      resetFlow();
      break;
  }
  for (i = 0; i < tm.structs.length; i++)
  {
    totalE += tm.structs[i].energy;
    tm.energy += tm.structs[i].energy*tm.structs[i].rate;
  }
  if (tm.energy >= totalE) tm.energy = totalE;
  for (i = 0; i < tm.units.length; i++)
  {
    tm.units[i].hasMoved = false;
    tm.units[i].hasAttacked = false;
  }
}

function freeLook()
{
  mapCursor.manage();
  camera.manage();
  map.draw();
  mapCursor.draw();
  hud.draw();
}

function navigateMenu()
{
  menuSys.input();
  map.draw();
  mapCursor.draw();
  hud.draw();
  menuSys.draw();
}

function moveSelect()
{
  movement.listen();
  camera.manage();
  map.draw();
  movement.showChain();
  mapCursor.draw();
  hud.draw();
}

function moveAnim()
{
  movement.go();
  map.draw();
}

function miniMap()
{
  minimap.listen();
  map.draw();
  minimap.draw();
}

function attackSelect()
{
  attack.listen();
  map.draw();
  attack.drawPattern();
  mapCursor.draw();
}

function attackAnim()
{
  map.draw();
  attack.go();
}

function attackEnd()
{
  switch (gameState.phase)
  {
    case "cpu":
      gameState.flow = "cpuManageUnits";
      break;
    case "p1":
      gameState.flow = "freeLook";
      break;
  }
}

function loop()
{
  thisFrame = new Date();
  if (thisFrame - gameState.frame < 33.34)
  {
    requestAnimationFrame(loop);
  }
  else
  {
    gameState.frame = thisFrame;
    switch (gameState.flow)
    {
      case "freeLook":
        freeLook();
        break;
      case "miniMap":
        miniMap();
        break;
      case "mainMenu":
      case "buildMenu":
      case "fabricateMenu":
      case "equipmentMenu":
        navigateMenu();
        break;
      case "moveUnit":
        moveSelect();
        break;
      case "moveAnim":
        moveAnim();
        break;
      case "attackSelect":
        attackSelect();
        break;
      case "attackAnim":
        attackAnim();
        break;
      case "attackEnd":
        attackEnd();
        break;
    }

    requestAnimationFrame(loop);
  }
}