ALPHA 3.0.0 - Added Inter-Process Communication and fixed the bug where the shell would continue taking in input when a command was still running.

init.lua

@@ -1,25 +1,6 @@
 local gpu = component.proxy(component.list("gpu")())
 local resX, resY = gpu.getResolution()
 
--- Architecture check
-local foundArchitecture = false
-for _, arch in pairs(computer.getArchitectures()) do
-  if arch == "Lua 5.3" then
-    foundArchitecture = true
-    break
-  end
-end
-
-if foundArchitecture then
-  computer.setArchitecture("Lua 5.3")
-else
-  gpu.set(1, 1, "Required architecture (Lua 5.3) is not supported.")
-  gpu.set(1, 2, "Halting.")
-  while true do
-    computer.pullSignal()
-  end
-end
-
 local function loadfile(file)
   checkArg(1, file, "string")
   local handle = component.invoke(computer.getBootAddress(), "open", file, "r")
@@ -37,6 +18,26 @@ local function handleError(errorMessage)
 end
 
 function loadBoot()
+  local foundArchitecture = false
+  for _, arch in pairs(computer.getArchitectures()) do
+    if arch == "Lua 5.3" then
+      foundArchitecture = true
+      break
+    end
+  end
+
+  if foundArchitecture then
+    local _, errorMesage = computer.setArchitecture("Lua 5.3")
+    if errorMessage then
+      error(errorMessage)
+    end
+  else
+    gpu.set(1, 1, "Required architecture (Lua 5.3) is not supported.")
+    gpu.set(1, 2, "Halting.")
+    while true do
+      computer.pullSignal()
+    end
+  end
   loadfile("/halyde/kernel/boot.lua")(loadfile)
 end
 
@@ -45,28 +46,43 @@ gpu.fill(1, 1, resX, resY, " ")
 
 -- Copying low-level functions in case of post-preload failure
 local pullSignal = computer.pullSignal
-local shutdown = computer.shutdown
+local beep = computer.beep
 
 local result, reason = xpcall(loadBoot, handleError)
 if not result then
-  gpu.setBackground(0x000000)
-  gpu.fill(1, 1, resX, resY, " ")
-  gpu.setBackground(0x800000)
-  gpu.setForeground(0xFFFFFF)
-  gpu.set(2,2,"A critical error has occurred.")
-  local i = 4
-  reason = tostring(reason):gsub("\t", "  ")
-  for line in string.gmatch(reason or "unknown error", "([^\n]*)\n?") do
-    gpu.set(2,i,line)
-    i = i + 1
+  local bgColor
+  if gpu.getDepth() == 1 then
+    bgColor = 0x000000
+  else
+    bgColor = 0x000080
   end
-  gpu.set(2,i+1, "Press any key to restart.")
-  local evname
-  repeat
-    evname = pullSignal()
-  until evname == "key_down"
-  shutdown(true)
-  while true do
-    coroutine.yield()
+  gpu.setBackground(bgColor)
+  gpu.fill(1, 1, resX, resY, " ")
+  local function render()
+    gpu.setForeground(0xFFFFFF)
+    local i = 2
+    reason = "A fatal error has occurred.\nHalyde cannot continue.\n \n" .. tostring(reason or "unknown error"):gsub("\t", "  ")
+    for line in string.gmatch(reason, "([^\n]*)\n?") do
+      gpu.set(2, i, line)
+      i = i + 1
+    end
+    gpu.set(1, resY - 1, string.rep("─", resX))
+    gpu.setForeground(bgColor)
+    gpu.setBackground(0xFFFFFF)
+    gpu.set(2, resY, "🠅   🠄   🠇   🠆")
+    gpu.setForeground(0xFFFFFF)
+    gpu.setBackground(bgColor)
+    gpu.set(4, resY, " / ")
+    gpu.set(9, resY, " / ")
+    gpu.set(14, resY, " / ")
+    gpu.set(20, resY, "Scroll" .. string.rep(" ", resX - 21))
+  end
+  render()
+  beep(440, 0.2)
+  beep(465, 0.2)
+  beep(440, 0.2)
+  beep(370, 0.5)
+  while true do -- TODO: Make this scrollable
+    pullSignal()
   end
 end