function vitesse() {
  var vi;
  vi = document.getElementsByName("vitesse")[0].value;
  vi = vi / 10;
  return(vi);
}

function target() {
  var galaxie;
  var systeme;
  var planete;

  galaxie = document.getElementsByName("galaxie_arr")[0].value;
  systeme = document.getElementsByName("systeme_arr")[0].value;
  planete = document.getElementsByName("planete_arr")[0].value;

  return("["+galaxie+":"+systeme+":"+planete+"]");
}

function setTarget(galaxie, ss, planete) {
  document.getElementsByName('galaxie_arr')[0].value = galaxie;
  document.getElementsByName('systeme_arr')[0].value = ss;
  document.getElementsByName('planete_arr')[0].value = planete;
}

function setMission(mission) {
  document.getElementsByName('ordre')[0].selectedIndex = mission;
  return;
}

function setUnion(unionid) {
  document.getElementsByName('union2')[0].selectedIndex = unionid;
}

function setTargetLong(galaxie, ss, planete, categorie, mission, cnt) {
  setTarget(galaxie, ss, planete, categorie);
  setMission(mission);
  setUnions(cnt);
}

function min(a, b) {
  a = a * 1;
  b = b * 1;
  if (a > b) {
    return b;
  } else {
    return a;
  }
}

function maxvitesse() {
  var msp = 1000000000;
  for (i = 1; i<=14; i++) {
    if (document.getElementsByName("vaisseau" + i)[0]) {
      if ((document.getElementsByName("vitesse" + i)[0].value * 1) >= 1
	  && (document.getElementsByName("vaisseau" + i)[0].value * 1) >= 1) {
	msp = min(msp, document.getElementsByName("vitesse" + i)[0].value);
      }
    }
  }

  return(msp);
}

function distance() {
  var galaxie_dep;
  var systeme_dep;
  var planete_dep;
  var galaxie_arr;
  var systeme_arr;
  var planete_arr;
  var dist;

  galaxie_dep = document.getElementsByName("galaxie_dep")[0].value;
  systeme_dep = document.getElementsByName("systeme_dep")[0].value;
  planete_dep = document.getElementsByName("planete_dep")[0].value;
  galaxie_arr = document.getElementsByName("galaxie_arr")[0].value;
  systeme_arr = document.getElementsByName("systeme_arr")[0].value;
  planete_arr = document.getElementsByName("planete_arr")[0].value;

  dist = 0;
  if ((galaxie_arr - galaxie_dep) != 0) {
    dist = Math.abs(galaxie_arr - galaxie_dep) * 20000;
  } else if ((systeme_arr - systeme_dep) != 0) {
    dist = Math.abs(systeme_arr - systeme_dep) * 95 + 2700;
  } else if ((planete_arr - planete_dep) != 0) {
    dist = Math.abs(planete_arr - planete_dep) * 5 + 1000;
  } else {
    dist = 5;
  }

  return(dist);
}

function duree() {
  var coef_vit;

  coef_vit = document.getElementsByName("facteurvitesse")[0].value;
  mvit = maxvitesse();
  vit = vitesse();
  dist = distance();
  return Math.ceil(((35000 / vit * Math.sqrt(dist * 10 / mvit) + 10) / coef_vit));
}

function conso() {
  var conso = 0;
  var conso_base = 0;
  var valeurs;
  var i;

  coef_vit = document.getElementsByName("facteurvitesse")[0].value;
  dist = distance();
  dur = duree();

  for (i = 1; i <= 14; i++) {
    if (document.getElementsByName("vaisseau" + i)[0]) {
      vitv = document.getElementsByName("vitesse" + i)[0].value;
      vite = 35000 / (dur * coef_vit - 10) * Math.sqrt(dist * 10 / vitv);
      conso_base = document.getElementsByName("conso" + i)[0].value
	* document.getElementsByName("vaisseau" + i)[0].value;
      conso += conso_base * dist / 35000 * ((vite / 10) + 1) * ((vite / 10) + 1);
    }
  }
  conso = Math.round(conso) + 1;
  return(conso);
}

function stockage() {
  var stockage = 0;

  for (i=1; i<=14; i++) {

    if (document.getElementsByName("vaisseau" + i)[0]) {
      if ((document.getElementsByName("vaisseau" + i)[0].value * 1) >= 1) {
	stockage
	  += document.getElementsByName("vaisseau" + i)[0].value
	  *  document.getElementsByName("capacite" + i)[0].value
      }
    }
  }

  stockage -= conso();

  return(stockage);
}

function Infov() {

  document.getElementById("distance").innerHTML = distance();
  var secondes = duree();
  document.forms["flotte"].elements["temps"].value = secondes;
  var heures = Math.floor(secondes / 3600);
  secondes -= heures * 3600;

  var minutes = Math.floor(secondes / 60);
  secondes -= minutes * 60;

  if (minutes < 10) minutes = "0" + minutes;
  if (secondes < 10) secondes = "0" + secondes;

  document.getElementById("duree").innerHTML = heures + ":" + minutes + ":" + secondes + " h";
  var stor = stockage();
  var cons = conso();

  document.getElementById("maxvitesse").innerHTML = maxvitesse();
  if (stor >= 0) {
    document.getElementById("conso").innerHTML = '<font color="lime">'+cons+'</font>';
    document.getElementById("stockage").innerHTML = '<font color="lime">'+stor+'</font>';
  } else {
    document.getElementById("conso").innerHTML = '<font color="red">'+cons+'</font>';
    document.getElementById("stockage").innerHTML = '<font color="red">'+stor+'</font>';
  }

}


function setRessource(id, val) {
  if (document.getElementsByName(id)[0]) {
    document.getElementsByName("ressource" + id + "_aff")[0].value = val;
  }
}

function maxRessource(id) {
  var ressource = document.getElementsByName("ressource" + id)[0].value;
  var ressourcechoisie = document.getElementsByName("ressource" + id + "_aff")[0].value;
  var stockCap = stockage();
  var r1Transport = document.getElementsByName("ressource1_aff")[0].value;
  var r2Transport = document.getElementsByName("ressource2_aff")[0].value;
  var r3Transport = document.getElementsByName("ressource3_aff")[0].value;

  var freeCapacity = Math.min(Math.max(stockCap - r1Transport - r2Transport - r3Transport + ressourcechoisie*1, 0), ressource);

  if (document.getElementsByName("ressource" + id + "_aff")[0]) {
    document.getElementsByName("ressource" + id + "_aff")[0].value = freeCapacity;
  }
  calculateTransportCapacity();
}


function maxTritium() {
    var stockCap = stockage(); // Capacitée de stoquage
    var r1toTransport = document.getElementsByName("ressource1_aff")[0].value; // valeur inscrite dans le titane a envoyé pas le titane qu'on a quai
    var r2toTransport = document.getElementsByName("ressource2_aff")[0].value; //pareille pour le carbone
    var r3Transport = document.getElementsByName("ressource3")[0].value - (conso()+1); //tritium a quai - conso
    var freeCapacity = stockCap - r1toTransport - r2toTransport; // capacitée de stoquage moins le titane/carbonne deja "a envoyer"
    // si on a plus de place pour foutre du tritium ça reste a 0
    if (freeCapacity < 0) {
        document.getElementsByName("ressource3_aff")[0].value = "0";
    }
    // si on a encore de la place
    if (freeCapacity > 0) {
        // si on a plus de place que de tritium a quai
        if (freeCapacity >= r3Transport){
            document.getElementsByName("ressource3_aff")[0].value = r3Transport;
            // si on a moins de place que de tritium a quai on calcule pour tritium 1000 avec une place de 500
        }
        if (freeCapacity < r3Transport){
            document.getElementsByName("ressource3_aff")[0].value = freeCapacity;
        }
    }
    
    calculateTransportCapacity();
}

function maxRessources() {
  var id;
  var stockCap = stockage();
  var r1Transport = document.getElementsByName("ressource1")[0].value;
  var r2Transport = document.getElementsByName("ressource2")[0].value;
  var r3Transport = document.getElementsByName("ressource3")[0].value - (conso()+1);
  var freeCapacity = stockCap - r1Transport - r2Transport - r3Transport;

  if (freeCapacity < 0) {
    r1Transport = Math.min(r1Transport, stockCap);
    r2Transport = Math.min(r2Transport, stockCap - r1Transport);
    r3Transport = Math.min(r3Transport, stockCap - r1Transport - r2Transport);
  }
  document.getElementsByName("ressource1_aff")[0].value = Math.max(r1Transport, 0);
  document.getElementsByName("ressource2_aff")[0].value = Math.max(r2Transport, 0);
  document.getElementsByName("ressource3_aff")[0].value = Math.max(r3Transport, 0);
  calculateTransportCapacity();
}

function calculateTransportCapacity() {
  var r1= Math.abs(document.getElementsByName("ressource1_aff")[0].value);
  var r2= Math.abs(document.getElementsByName("ressource2_aff")[0].value);
  var r3= Math.abs(document.getElementsByName("ressource3_aff")[0].value);

  tc =  stockage() - r1 - r2 - r3;

  if (tc < 0) {
    document.getElementById("reste_ressources").innerHTML="<font color=red>"+tc+"</font>";
  } else {
    document.getElementById("reste_ressources").innerHTML="<font color=lime>"+tc+"</font>";
  }
  return tc;
}