feat: begin implementing console commands

lua/CC Tweaked/tutel/tutel-host.lua

@@ -231,12 +231,16 @@ registerEventListener("modem_message", handleMessages)
 --[[
     key handling
 ]]
+local GLFW_KEY_DOWN = 264
+local GLFW_KEY_UP = 265
+local GLFW_KEY_ENTER = 257
+
 local logOffset = 0
 
 function scrollLogs(key, isHeld)
-    if key == 264 then
+    if key == GLFW_KEY_DOWN then
         logOffset = logOffset - 1
-    elseif key == 265 then
+    elseif key == GLFW_KEY_UP then
         logOffset = logOffset + 1
     end
 
@@ -246,6 +250,29 @@ end
 
 registerEventListener("key", scrollLogs)
 
+--[[
+    console
+]]
+local commandBuffer = ""
+function drawConsole(y)
+
+end
+
+
+function handleConsoleInput(char)
+    commandBuffer = commandBuffer..char
+end
+registerEventListener("char", handleConsoleInput)
+
+function handleConsoleKeys(key)
+    if key == GLFW_KEY_ENTER then
+        -- executeCommand(commandBuffer)
+        log.info("Executed command: %s", commandBuffer)
+        commandBuffer = ""
+    end
+end
+registerEventListener("key", handleConsoleKeys)
+
 --[[
     drawing functions
 ]]
@@ -323,6 +350,23 @@ function drawStatusBar(y)
     term.write(str)
 end
 
+function drawCommandBar(w, y)
+    term.setCursorPos(0, y)
+    term.clearLine()
+
+    term.setBackgroundColor(colors.white)
+    term.setTextColor(colors.black)
+
+    term.write("$ ")
+
+    local startingIndex = commandBuffer:len() - w - 3
+    if startingIndex < 0 then 
+        startingIndex = 0
+    end
+
+    term.write(commandBuffer:sub(startingIndex))
+end
+
 --[[
     main loop functions
 ]]
@@ -352,8 +396,9 @@ function updateScreen()
     term.setBackgroundColor(colors.black)
     term.setTextColour(colors.white)
 
-    drawLogs(1, 2, w, h - 1)
-    drawStatusBar(h)
+    drawLogs(1, 2, w, h - 2)
+    drawStatusBar(2)
+    drawCommandBar(w, h)
 end
 
 function pollEvents()