var spawn;
var target;

function getBaseById(id)
{
    for(var i in Game.spawns)
    {
        if (Game.spawns[i].id == id)
         return i;
    }
}

function harvest (i)
{
        target = i.pos.findNearest(Game.SOURCES);
        if(!target) return;
        i.moveTo(target);
        i.harvest(target);
}
function build (i, baseid)
{
    if (i.energy === 0)
    {
        spawn = Game.spawns[getBaseById(baseid)];
        i.moveTo(spawn);
        spawn.transferEnergy(i);
        return;
    }
    target = i.pos.findNearest(Game.CONSTRUCTION_SITES);
        if(!target) return;
    i.moveTo(target);
    i.build(target);
}

function haul (i, baseid)
{
    if (i.energy < i.energyCapacity)
    {
        target = i.pos.findNearest(Game.DROPPED_ENERGY);
        if(!target) return;
        i.moveTo(target);
        i.pickup(target);
        return;
    }
        spawn = Game.spawns[getBaseById(baseid)];
        if(!spawn) return;
        i.moveTo(spawn);
        i.transferEnergy(spawn);
}

var harvesters = [];
var builders = [];
var haulers = [];
var mem = [];
for(var i in Game.creeps)
{
    mem = Game.creeps[i].memory.split("|");
    if(mem[0] == 'harvester')
    {
        harvest(Game.creeps[i]);
        harvesters[mem[1]]++;
    }
    else if (mem[0] == 'hauler')
    {
        haul(Game.creeps[i], mem[1]);
        haulers[mem[1]]++;
    }
    else if (mem[0] == 'builder')
    {
        build(Game.creeps[i], mem[1]);
        builders[mem[1]]++;
    }
}

var baseId = 0;

for(var i in Game.spawns)
{
    spawn = Game.spawns[i];
    baseId = spawn.id;
    if (builders[baseId] === undefined) builders[baseId] = 0;
    if (haulers[baseId] === undefined) haulers[baseId] = 0;
    if (harvesters[baseId] === undefined) harvesters[baseId] = 0;

    if (harvesters[baseId] < 2)
        spawn.createCreep([Game.WORK, Game.WORK, Game.WORK, Game.MOVE], null, "harvester|"+baseId);
    else if (builders[baseId] < 1)
        spawn.createCreep([Game.WORK, Game.WORK, Game.CARRY, Game.CARRY, Game.MOVE], null, "builder|"+baseId);
    else if (haulers[baseId] < 1)
        spawn.createCreep([Game.CARRY, Game.CARRY, Game.MOVE,Game.MOVE,Game.MOVE], null, "hauler|"+baseId);
}