Fix UNS

GLONASS/README.md

@@ -1 +1,3 @@
-I originally made this project in 2022 as a proof of concept.
+# Unitary Navigational System
+
+I originally made this project in 2022 as a proof of concept, but now it's *mostly* ready for production. It's a very basic script.

GLONASS/UNS.lua

@@ -1,39 +1,29 @@
 --[[
-Unitary Navigational System v0.0
+Unitary Navigational System v0
 
 This basic script attempts to consolidate a GPS constellation into a single computer. Because using 4 is plain wasteful!
-It was made out of project "GLONASS Tower" I made in 2022 after discovering CC
+It was made out of project "GLONASS Tower" I wrote back in 2022 after first discovering CC
 
 TODO: Bring back cool logging!
 ]]
 
--- Modems declaration. Edit this
+local UNS_VERSION = 0
+local UNS_HOST_ID = "lavender-1"
+
+-- Modems declaration. Edit this!
 local modems = {
     {
-        id = "modem_id_here",
+        id = "modem_id",
         pos = {
-            x = 1,
-            y = 1,
-            z = 1
+            1,  -- x
+            1,  -- y
+            1   -- z
         },
-        modem = nil,
-        primary = true  -- Highest modem, to increase coverage ever so slightly
+        primary = true,  -- The modem that does listening
+        modem = nil,  -- Declared below, leave as nil
     }
 }
 
--- Prepare all modems
-local primary_modem = nil
-for i = 1 .. #modems do
-    modems[i].modem = peripheral.wrap(modems[i].id)
-    if modems[i].primary then
-        primary_modem = modems[i].modem
-    end
-end
-if primary_modem == nil then
-    primary_modem = modems[0].modem
-end
-primary_modem.open(gps.CHANNEL_GPS)  -- Only *listen* on 1 modem to avoid repeats
-
 -- Simple logging. It's not ideal but will do as a "temporary" solution
 local function log(message)
     term.write(message)
@@ -45,19 +35,39 @@ local function log(message)
 end
 term.clear()
 term.setCursorPos(1, 1)
-log("UNS v0.0 starting...")
+log("UNS v" .. UNS_VERSION)
+
+-- Prepare all modems
+local primary_modem = nil
+for i, modem in ipairs(modems) do
+    modems[i].modem = peripheral.wrap(modems[i].id)
+    if modems[i].primary then
+        primary_modem = modems[i].modem
+    end
+    log("load <" .. modem.id .. "> pos - " .. textutils.serialise(modem.pos))
+end
+if primary_modem == nil then
+    primary_modem = modems[0].modem
+end
+primary_modem.open(gps.CHANNEL_GPS)  -- Only *listen* on 1 modem to avoid repeats
 
 while true do
-    -- Wait for a GPS query
+    -- Wait for a request on channel
     local event, side, channel, replyChannel, message, distance
     repeat
         event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
-    until channel == gps.CHANNEL_GPS and message == "PING"
-    log("Recieved request, distance: " .. distance)
+    until channel == gps.CHANNEL_GPS
 
-    -- Send data from all modems
-    for _, modem in ipairs(modems) do
-        modem.transmit(channel, replyChannel, modem.pos)
-        log("Modem ID <" .. modem.id .. "> transmitted location")
+    if message == "PING" then  -- Normal location request
+        log("Recieved location request, d-" .. distance)
+        for _, modem in ipairs(modems) do
+            modem.modem.transmit(channel, replyChannel, modem.pos)
+            log("Modem <" .. modem.id .. "> transmitted location")
+        end
+    elseif message == "INFO" then  -- Host query
+        log("Recieved info request, d-" .. distance)
+        primary_modem.transmit(channel, replyChannel, {version = UNS_VERSION, host = UNS_HOST_ID, modems = modems})
+    elseif distance > 30 then  -- TODO: How do I and *should* I even ensure I don't recieve my own messages?
+        log("Recieved broken request, d-" .. distance)
     end
 end