Added terminal rendering.

quantum-beacon.lua

@@ -10,13 +10,83 @@ local RECEIVE_CHANNEL = 101
 local NODE_NAME = "TMP"
 local TRANSMIT_INTERVAL = 15
 
+local function drawScreen(online)
+    local w, h = term.getSize()
+    term.setBackgroundColor(colors.black)
+    term.clear()
+    
+    term.setCursorPos(1, 1)
+    term.setBackgroundColor(colors.gray)
+    term.setTextColor(colors.white)
+    term.clearLine()
+    term.write("Quantum Beacon")
+
+    
+    term.setBackgroundColor(colors.black)
+    term.setTextColor(colors.lightGray)
+    term.setCursorPos(1, 3)
+    term.write("Node:")
+    term.setCursorPos(1, 5)
+    term.write("Channel:")
+    term.setCursorPos(1, 7)
+    term.write("Transmit Interval:")
+    term.setCursorPos(1, 9)
+    term.write("Online Status:")
+
+    term.setTextColor(colors.white)
+    term.setCursorPos(20, 3)
+    term.write(NODE_NAME)
+    term.setCursorPos(20, 5)
+    term.write(tostring(SEND_CHANNEL))
+    term.setCursorPos(20, 7)
+    term.write(tostring(TRANSMIT_INTERVAL))
+    local str = nil
+    if online then
+        str = "Online"
+        term.setTextColor(colors.lime)
+    else
+        str = "Offline"
+        term.setTextColor(colors.red)
+    end
+    term.setCursorPos(20, 9)
+    term.write(str)
+end
+
+local function clearMessageLine()
+    local _, h = term.getSize()
+    term.setCursorPos(1, h - 1)
+    term.setBackgroundColor(colors.gray)
+    term.clearLine()
+end
+
+local function showError(msg)
+    clearMessageLine()
+    local _, h = term.getSize()
+    term.setCursorPos(2, h - 1)
+    term.setBackgroundColor(colors.gray)
+    term.setTextColor(colors.red)
+    term.write(msg)
+end
+
+local function showMessage(msg)
+    clearMessageLine()
+    local _, h = term.getSize()
+    term.setCursorPos(2, h - 1)
+    term.setBackgroundColor(colors.gray)
+    term.setTextColor(colors.lightBlue)
+    term.write(msg)
+end
+
 local function getPeripheralOrWait(name)
     local p = nil
     repeat
         p = peripheral.find(name)
         if p == nil then
-            print("Error: Couldn't find an attached peripheral with name \"" .. name .. "\". Attach one please.")
+            showError("Error: Couldn't find an attached peripheral with name \"" .. name .. "\"")
             os.pullEvent("peripheral")
+            if p ~= nil then
+                showMessage("Peripheral \"" .. name .. "\" connected.")
+            end
         end
     until p ~= nil
     return p
@@ -29,6 +99,8 @@ local function meSystemConnected(meBridge)
     return craftingCpus ~= nil and #craftingCpus > 0
 end
 
+drawScreen(false)
+
 while true do
     local modem = getPeripheralOrWait("modem")
     local meBridge = getPeripheralOrWait("meBridge")
@@ -38,5 +110,6 @@ while true do
         online = meSystemConnected(meBridge)
     }
     modem.transmit(SEND_CHANNEL, RECEIVE_CHANNEL, packet)
+    drawScreen(packet.online)
     os.sleep(TRANSMIT_INTERVAL)
 end