Executing a function that is saved as a variable

buttons[name]["funcF"]

buttons[name]["funcF"]

getInfo("reactorComp", "turnOff")

----- Relevant Code -----
-- Buttons
buttons = {}
buttons["reactorToggle"] = {funcF = getInfo("reactorComp", "turnOff"), funcT = getInfo("reactorComp", "turnOn")}

-- Called when the monitor is clicked, used to check if a button is pressed, and if so execute the relative function
function checkButtons(x, y)
  for name, temp in pairs(buttons) do
	local button = buttons[name]
	if button["active"] == true and y == button["yPos"] then
	  if x >= button["xPos"] and x <= button["xPos"] + math.floor(button["width"]/2) then
		buttons[name]["funcF"] -- error
	  elseif x >= (button["xPos"] + math.ceil(button["width"]/2)) and x <= (button["xPos"] + button["width"]) then
		buttons[name]["funcT"]
	  end
	end
  end
end

-- Calling the creation of the button
displayButton("reactorToggle", "On", "Off", getInfo("reactorComp", "checkPower")[3], 3 + 3*percentBarLength/4 + 3, 5, 7)

----- Semi Relevant Code -----
function displayButton(name, textT, textF, state --[[T/F]], x, y, width)
  buttons[name] = {active = true, xPos = x, yPos = y, width = width}
  if state == true then
	monitor.setBackgroundColor(colors.black)
	monitor.setTextColor(colors.white)
  else
	monitor.setBackgroundColor(colors.red)
	monitor.setTextColor(colors.white)
  end
  monitor.setCursorPos(x, y)
  mWrite(textF..string.rep(" ", math.floor(width/2) - string.len(textF)))

  monitor.setBackgroundColor(colors.black)
  mWrite(" ")
  if state == true then
	monitor.setBackgroundColor(colors.green)
	monitor.setTextColor(colors.white)
  else
	monitor.setBackgroundColor(colors.black)
	monitor.setTextColor(colors.white)
  end
  mWrite(textT..string.rep(" ", width/2 - string.len(textT)))
end

buttons[ name ][ "FuncF" ]() --#calls it
buttons[ name ].FuncF() --#also calls it
local f = buttons[ name ][ "FuncF" ] --#puts it in another variable
f() --#also calls it

KingofGamesYami, on 21 September 2015 - 01:31 PM said:

buttons[ name ][ "FuncF" ] is a function pointer. To call a function in any variable, you use ().

-snip-

DARKHAWX, on 21 September 2015 - 01:45 PM said:

KingofGamesYami, on 21 September 2015 - 01:31 PM said:

buttons[ name ][ "FuncF" ] is a function pointer. To call a function in any variable, you use ().

-snip-

Interesting, I swear I tried using that… maybe I just had my variables messed up when I did…

buttons["reactorToggle"] = {funcF = function() getInfo("reactorComp", "turnOff") end, function() funcT = getInfo("reactorComp", "turnOn") end}

valithor, on 21 September 2015 - 02:19 PM said:

Due to the way you define the table and more specifically the functions in the table, is why it did not work. When you define the table you are actually calling the function and setting funcF and FuncT to what these functions return. So as King said, that is how you should call them, but in order for it to function how you want, you would also need to define the functions like the following if you want it to call them without having to manually pass the arguments.

buttons["reactorToggle"] = {funcF = function() getInfo("reactorComp", "turnOff") end, function() funcT = getInfo("reactorComp", "turnOn") end}

buttons[name]["funcT"]()

buttons[name].funcT()

buttons["reactorToggle"] = {funcF = function() getInfo("reactorComp", "turnOff") end, funcT = function() getInfo("reactorComp", "turnOn") end}

Bomb Bloke, on 21 September 2015 - 11:42 PM said:

Can't say I've reviewed the whole script, but I see a little typo in valithor's line that'd lead to that error:

buttons["reactorToggle"] = {funcF = function() getInfo("reactorComp", "turnOff") end, funcT = function() getInfo("reactorComp", "turnOn") end}

TYKUHN2, on 22 September 2015 - 03:43 AM said:

Where is the error? Should be something like :scriptName:lineNumber Error (Though I cannot remember off the top of my head, I have been working with other stuff lately)

Extraneous information

Technically a function IS a variable. :)/>

TYKUHN2, on 22 September 2015 - 03:55 AM said:

No attempt to call nil here. Only hundreds upon hundreds of replacing Montior with Term because CCEmuRedux and non-functioning buttons (probably becuase I am clicking a terminal)

DARKHAWX, on 22 September 2015 - 09:59 AM said:

Huh?

TYKUHN2, on 23 September 2015 - 12:39 AM said:

What is the monitor size intended to be? It throws a negative array error because apparently mine is too small.

DARKHAWX, on 23 September 2015 - 02:33 AM said:

Mine is currently 6 wide and 3 tall…

buttons[name][funcF]

buttons[name][funcT]

buttons[name]["reactorToggle"][funcT]
buttons[name]["reactorToggle"][funcT]

TYKUHN2, on 23 September 2015 - 09:59 PM said:

buttons[name][funcF]

and

buttons[name][funcT]

are nil

buttons[name]["reactorToggle"][funcT]
buttons[name]["reactorToggle"][funcT]

Are the functions your looking for. Again there IS weirdness so be careful.

P.S. Sorry it took so long for something so simple. I had to brutalize your code to get it to work. That and relearning the Rednet API

buttons[name]["tFunc"]()
buttons[name]["fFunc"]()

print(type(buttons[name]["tFunc"]))
print(type(buttons[name]["fFunc"]))

for k,v in pairs(buttons[name]) print(k) end

TYKUHN2, on 23 September 2015 - 11:19 PM said:

Valithor on what lines would you like me to inject them into? Right as they are called?

And I do not have it set up as I said in the solution. I actually deleted "reactorToggle" and put it on a higher level of the table, and I also had it reset everytime DisplayButton() was called.

  local updateTable = {active = true, xPos = x, yPos = y, width = width}
  for k,v in pairs(updateTable) do
	buttons[name][k] = v
  end

buttons[name] = {active = true, xPos = x, yPos = y, width = width, funcF = function () funcT = getInfo("reactorComp", "turnOff") end, funcT = function () funcT = getInfo("reactorComp", "turnOn") end}

TYKUHN2, on 24 September 2015 - 02:58 AM said:

I barely read the code, execpt the parts that didn't work without spoofing/minor editing.

But I fixed it by moving the definitions to

buttons[name] = {active = true, xPos = x, yPos = y, width = width, funcF = function () funcT = getInfo("reactorComp", "turnOff") end, funcT = function () funcT = getInfo("reactorComp", "turnOn") end}

TYKUHN2, on 24 September 2015 - 04:15 AM said:

Passing variables about the table and handling them from the function itself would work… or just different function names.