creep.action.withdrawing.js

var action = new Creep.Action('withdrawing');
action.maxPerTarget = 2;
action.isValidAction = function(creep){
    return ( creep.room.storage && creep.room.storage.store.energy > 0  && _.sum(creep.carry) < creep.carryCapacity && (creep.room.energyAvailable < creep.room.energyCapacityAvailable || creep.room.towerFreeCapacity > 500 )
    );
};
action.isValidTarget = function(target){
    return ( (target != null) && (target.store != null) && (target.store.energy > 0) );
};  
action.newTarget = function(creep){
    return creep.room.storage;
};
action.work = function(creep){
    return creep.withdraw(creep.target, RESOURCE_ENERGY);
};
module.exports = action;