Staging and Modules

The ctl/ directory has vessel-wide controls. Module directories are the per-part view. They only appear when the vessel has that kind of module, which is rather better than a lie-filled directory.

/sim (in guest)

# One-shot: activates the next KSA stage.
echo 1 > /sim/vessels/active/ctl/stage

# Master switches, then individual fitted modules.
echo 1 > /sim/vessels/active/ctl/lights
ls /sim/vessels/active/lights
cat /sim/vessels/active/lights/0/on
echo 0 > /sim/vessels/active/lights/0/on

ls /sim/vessels/active/engines
cat /sim/vessels/active/engines/0/active

HTTP (host)

curl -X POST --data '1' http://127.0.0.1:4242/v1/fs/vessels/active/ctl/stage
curl -X POST --data '1' http://127.0.0.1:4242/v1/fs/vessels/active/ctl/lights
curl http://127.0.0.1:4242/v1/fs/vessels/active/lights/0/on
curl -X POST --data '0' http://127.0.0.1:4242/v1/fs/vessels/active/lights/0/on

stage is a one-shot, so firing it again while KSA cannot advance returns EBUSY. Do not use a shell glob with > to fan out a command: redirection wants exactly one target. You will meet the proper same-tick fan-out tool in Atomic batches.

Note

Module indexes describe the current vessel, not a universal part catalogue. Staging can change them. Discover them again after a separation or a dock.

Next, let the onboard computer do some steering: Attitude modes.

Next: Attitude modesAsk KSA's flight computer to keep a named orientation for you.