module.exports = {
    begin(creep){},
    
    tick(creep){
        const source = Game.getObjectById(creep.memory.job.source);
        if(!creep.pos.isNearTo(source)) { creep.moveTo(source); return; }
        if(creep.memory.aboveContainer) { creep.harvest(source); return; }
        if(creep.memory.container) { moveToContainer(creep); return; }
        if(!(Game.time%100)) scanForContainer(creep, source);
        creep.harvest(source);
    }
}

function moveToContainer(creep){
    const container = Game.getObjectById(creep.memory.container);
    if(container.pos.x === creep.pos.x && container.pos.y === creep.pos.y) creep.memory.aboveContainer = true; 
    else creep.moveTo(container);
}

function scanForContainer(creep, source){
    const container = source.pos.findInRange(FIND_STRUCTURES, 1, {
        filter:{structureType:STRUCTURE_CONTAINER}
    })[0];            
    if(container) creep.memory.container = container.id;
}