role.wallRepairer.js

var roleBuilder = require('role.builder');

module.exports = {
    // a function to run the logic for this role
    run: function (creep) {
        // if creep is trying to repair something but has no energy left
        if (creep.memory.working == true && creep.carry.energy == 0) {
            // switch state
            creep.memory.working = false;
        }
        // if creep is harvesting energy but is full
        else if (creep.memory.working == false && creep.carry.energy == creep.carryCapacity) {
            // switch state
            creep.memory.working = true;
        }

        // if creep is supposed to repair something
        if (creep.memory.working == true) {
            // find all walls in the room
            var percentage = 0.0003;
            var target = creep.pos.findClosestByPath(FIND_STRUCTURES, {
                filter: (s) => s.structureType == STRUCTURE_WALL
                  //  || s.structureType == STRUCTURE_RAMPART
                    && s.hits / s.hitsMax < percentage
            });

            if (!target == 0) {
                if (creep.repair(target) == ERR_NOT_IN_RANGE) {
					creep.moveTo(target, { maxRooms: 1 });
                }
            }
            // if we can't fine one
            else {
                // look for construction sites
                roleBuilder.run(creep);
            }
        }
        // if creep is supposed to harvest energy from source
        else {
            creep.getEnergy(false, false, true, false);
        }
    }
};