Alarms and sounds

A display is only seen by whoever stands in front of it. If the pressure drops in the storage while you are out mining ice, you need something louder: the klaxon speaker.

The klaxon#

You pick the sound with names from the Sound. namespace:

Set the sound once before the main loop, inside the loop you only switch On. There is a reason for that in the game code: every write of SoundAlert triggers the sound again, even with the same value.

sbn HORN HASH("Hupe") SoundAlert Sound.PressureLow

Warning light#

You switch the flashing light (StructureFlashingLight) through On like any light. It stays on as long as the fault persists – even when the horn has gone quiet.

Acknowledging#

An alarm that keeps honking for minutes while you are already on your way to the repair is annoying. With a button you acknowledge it: the horn goes quiet, the light stays on. When the fault disappears, the acknowledgement is forgotten. If it comes back, the horn sounds again.

For that a register remembers whether it was acknowledged:

slt alarm press LIMIT          # fault right now?
lbn button BUTTON HASH("Quittieren") Activate Average
or ack ack button              # remember the press
and ack ack alarm              # forget it once all is well
seqz tmp ack
and horn alarm tmp             # honk only when not acknowledged
sbn HORN HASH("Hupe") On horn
sbn LIGHT HASH("Warnlicht") On alarm

Activate is only 1 for about one tick. Because the or holds on to the press in ack, that one tick is enough.