3 replies to this topic

[KingofGamesYami]

Stuff[1] = coroutine.resume()

Stuff[1]

'=' expected.

Is there any way of doing something similar to this, executing a line stored in a table?

[CometWolf]

Stuff[1]()

It's a function pointer like any other, why would calling it be any different?

Note that this

Stuff[1] = coroutine.resume()

would store the result of coroutine.resume() in your table, not the function iself.

Edited by CometWolf, 23 April 2014 - 09:51 PM.

[KingofGamesYami]

Ok, I get that, but I can't use that in my program (see spoiler). Any ideas on how to do this? *note: this code is definitely full of bugs, because while trying to debug I ran into this error.

Spoiler

local modem = peripheral.wrap('top')
if not modem.isOpen(os.getID()) then
 modem.open(os.getID())
end

function newButton( maxx, minx, miny, maxy, name, active, inactive, func )
 buttons[#buttons+1] = {}
  local b = buttons[#buttons]
  b['mx'] = maxx
  b['sx'] = minx
  b['my'] = maxy
  b['sy'] = miny
  b['name'] = name
  b['ic'] = inactive
  b['ac'] = active
  b['b'] = false
  b['clicked'] = func
  return #buttons
end

function showButtons()
 for i = 1, #buttons do
  if buttons[i]['b'] then
   term.setBackgroundColor(buttons[i]['ic'])
   term.setCursorPos(buttons[i]['sx'], buttons[i]['sy'])
   for l = 0, buttons[i]['mx'] - buttons[i]['sx'], 1 do
    for m = 0, buttons[i]['my'] - buttons[i]['sy'], 1 do 
     term.setCursorPos(buttons[i]['sx'] + l, buttons[i]['my'] + m)
     term.write(' ')
    end
   end
   term.setCursorPos((buttons[i]['mx'] + buttons[i]['sx'] - string.len(buttons[i]['name'])) / 2, (buttons[i]['my'] + buttons[i]['sy'] - 1) / 2)
   term.write(buttons[i]['name'])
  end
 end
end

function resolve(event)
 local x, y, clicked = event[2], event[3]
 for i = 1, #buttons do
  if buttons[i][mx] >= x and buttons[i][sx] <= x and buttons[i][my] >= y and buttons[i][sy] <= y then
   clicked = i 
  end
 end
 buttons[clicked]['clicked']
end

function event()
 local r = ''
 local event = {os.pullEvent()}
 if event[1] == "modem_message" then
  recieveChat(event)
 elseif event[1] == "char" then
  r = r..event[2]
 elseif event[1] == "mouse_click" then
  resolve(event)
 elseif event[1] == "key" and event[2] == 28 then
  sendChat(r, sendID)
 end
end

function sendChat(text, sendID)
 while true do
  local w, h = term.getSize()
  term.setCursorPos(x, y)
  local msg = getKeys()
  local modem = peripheral.wrap('top')
  modem.transmit(sendID, os.getID(), msg)
  coroutine.yield()
 end
end

function receiveChat(event)
 while true do
  local x, y = term.getCursorPos()
  local w, h = term.getSize()
  if y >= h - 2 then
   term.clear()
   term.setCursorPos(1, 1)
  else
   term.setCursorPos(1, y+1)
  end
  print(contacts[event[3]]..": "..event[5])
 end
end

chat = coroutine.create(sendChat())
getChat = coroutine.create(receiveChat())

local contacts

if fs.exists("Chat") and fs.isDir("Chat") then
 local file = fs.open("Chat/contacts", "r")
 local data = file.readAll()
 contacts = textutils.unserialize(data)
 file.close()
else
 fs.mkDir("Chat")
 local file = fs.open("Chat/contacts", "w")
 file.writeLine("{ }")
 file.close()
 contacts = {}
end

function createContact()
 while true do 
  term.write("Name: ")
  local name = read()
  term.write("Computer ID: ")
  local ID = read()
  contacts[ID] = name
  file = fs.open("Chat/contacts", "w")
  file.write(textutils.serialize(contacts))
  file.close()
  coroutine.yeild()
 end
end

newContact = coroutine.create(createContact())

function reset()
 term.setBackgroundColor(colors.red)
 term.clear()
 term.setBackgroundColor(colors.blue)
 local w, h = term.getSize()
 for i = 1, h do
  term.setCursorPos(1, i)
  term.write(' ')
  term.setCursorPos(w, i)
  term.write(' ')
 end
 for i = 1, w do
  term.setCursorPos(i, 1)
  term.write(' ')
  term.setCursorPos(i, h/2 + 1)
  term.write(' ')
  term.setCursorPos(i, h)
  term.write(' ')
 end
 term.setBackgroundColor(colors.red)
 term.setCursorPos(2, h/2)
end

local w, h = term.getSize()
local text = "Enter a Connection ID"
term.setCursorPos((w - #text) / 2, (h - #text) / 2)
term.write(text)
term.setCursorPos(1, h)

coroutine.resume(chat, contact)

local bcontact = newButton(10, 20, 5, 10, "New Contact", colors.lime, colors.red, coroutine.resume(newContact))

[CometWolf]

This

local bcontact = newButton(10, 20, 5, 10, "New Contact", colors.lime, colors.red, coroutine.resume(newContact))

won't work as intended. Same as above, your passing the results of coroutine.resume(newContact), not the function itself.
Use an anonymous function if you wish to pass a function with parameters.

local bcontact = newButton(10, 20, 5, 10, "New Contact", colors.lime, colors.red, function() coroutine.resume(newContact) end)