module.exports = {
	setup: function () { Room.prototype = _Room.prototype; }
}

class _Room extends Room {
	begin(){
		roomScan(this);
		jobScan(this);
		vacancyScan(this);
		this.memory.init = true;	
    }
    
    tick(){
		if(!this.memory.init) this.begin(); 
		if(Game.time%100 === 1) vacancyScan(this);
    }
}   

function roomScan(room){
	room.memory.layout = {
		sources: room.find(FIND_SOURCES).map(s=>s.id)
	};
}

function jobScan(room){
	if(!room.memory.jobs) room.memory.jobs = Array(10).fill({role: Role.HARVESTER})
		.concat(room.memory.layout.sources.map(s=> {return {role: Role.MINER, source: s}}));	
}

function vacancyScan(room){
	const activeJobs = room.find(FIND_MY_CREEPS).map(creep=>creep.memory.job);
	const jobs = [].concat(room.memory.jobs);
	activeJobs.forEach(job => {
		const index = jobs.indexOf(job);
		if(0 <= index) jobs.splice(index,1);
	});
	room.memory.vacancies = jobs;
}