Transferring energy to storage

NanoCraft

Why is the coding excessively cryptic? It seems that the command which works fine when transferring energy to STRUCTURE_EXTENSION does not also work for STRUCTURE_STORAGE or CONTAINER. Any help would be great, see my current code below:

run: function(creep) {
    if(creep.carry.energy < creep.carryCapacity) {
        var sources = creep.room.find(FIND_SOURCES);
        if(creep.harvest(sources[1]) == ERR_NOT_IN_RANGE) {
            creep.moveTo(sources[1], {visualizePathStyle: {stroke: '#ffaa00'}});
        }
    }
    else {
        var targets = creep.pos.findClosestByPath(FIND_STRUCTURES, {
                filter: (s) => (s.structureType == STRUCTURE_STORAGE) &&
                        s.energy < s.energyCapacity
        });
        if(targets) {
            if(creep.transfer(targets, RESOURCE_ENERGY) == ERR_NOT_IN_RANGE) {
                creep.moveTo(targets, {visualizePathStyle: {stroke: '#ffffff'}});

wtfrank

energy structures vs store structures

Terminal/Storage/Container/Tombstone have a "store" which works similar to a creep's "carry".

s.energy < s.energyCapacity would work for an energy structure like an extension but not for a store structure like a container. In this case you need s.store.energy < s.storeCapacity.

Saruss

Or better remember if there is some mineral in there too, maybe use lowdash container.storeCapacity - _.sum(container.store) for free space.

Famine

The reason that containers/storage/terminals are different is because they can store minerals. Extensions and spawns and towers can only store energy, so there's no need for the store object.

For store, store[RESOURCE_ENERGY] is always defined, 0 if it's empty. If the other minerals/compounds aren't present, those values are undefined. So if there's no lemergium, then store[RESOURCE_LEMERGIUM] would be undefined

NanoCraft

@wtfrank @Saruss @famine Thanks a lot for the explanation guys now I understand why it is different and the code is working all good also.