creep.attacker.js

'use strict';
const FSM = require('creep.fsm');
const getDismantleTarget = require('creep.utilities').getDismantleTarget;

Creep.attacker = {
    body: (room) => {
        return Creep.parse('8A8M');
    },
    role: 'attacker',
    spawnCondition: (spawn, spawning) => {
        return spawn.room.energyAvailable >= spawning.getCost();
    },
    fsm: new FSM(
        ['moveTo', 'moveAttack'],
        initScope, transitionFunction, [
            (s) => deserialize(s[0], RoomPosition), _.identity
        ]
    )
};


function initScope(creep) {
    let home = creep.memory.home;
    if(!Game.rooms[home] || !Game.rooms[home].myOwned()) return [serialize(new RoomPosition(25, 25, home))];
}

/**
 *
 * @param creep {Creep}
 */
function transitionFunction(creep) {
    let scope = creep.memory.fsm.scope;
    let pos = deserialize(scope[0], RoomPosition);
    switch (creep.memory.fsm.state) {
        case 0: // moveTo
            if(creep.room.name === pos.roomName){
                return [1, getPosObjPair(getDismantleTarget(creep))];
            }
            return [0, scope];
        case 1: //moveAttack
            if(creep.room.name !== pos.roomName){
                return [0, scope];
            }
            let obj = deserialize(scope[1], Structure);
            if(!obj){
                return [1, getPosObjPair(getDismantleTarget(creep))];
            }
            return [1, scope];

    }
}