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- local mside = "back" --NFC Modem Side
- local channel = 4021--NFC Send Channel(must match with the NFC Receive Channel of NFC Receiver Device)
- local rchannel = 4022--NFC Response Channel
- local menu_options = { --This is our menu table. It contains basic data about the menu
- [1] = {text="Pay and Open Gate", color=colors.green},
- [2] = {text="Exit", color=colors.red},
- }
- term.clear()
- term.setBackgroundColor(colors.white)
- term.clear()
- local termX, termY = term.getSize() --The x/y size of the terminal
- local function menuDraw(selected) --Our main draw function
- local yPos = termY/2 - #menu_options/2 --The initial y position
- for index, data in pairs(menu_options) do
- menu_options[index].bounds = { --Create a new table in each option with the boundary data
- x1 = termX/2 - (#data.text+4)/2;
- x2 = termX/2 + (#data.text+4)/2;
- y = yPos;
- }
- term.setTextColor(data.color)
- term.setCursorPos(data.bounds.x1, data.bounds.y)
- local text =
- index==selected and "[ "..data.text.." ]" or
- " "..data.text.." " --Essentially an if statement, but in a contracted form
- term.write(text)
- yPos = yPos+1 --Increment the initial y pos so we can move on the next line
- end
- end
- local function checkClick(x,y) --Check the mouse click to see if there's a menu option
- for index, data in pairs(menu_options) do
- if x>= data.bounds.x1 and x<= data.bounds.x2 and y==data.bounds.y then
- return index --Returns the index of the clicked option
- end
- end
- return false --If it went through the entire for loop without success, return false
- end
- local selector = 1 --Our selector
- while true do --The main loop. I would generally put this inside of a function for a program.
- menuDraw(selector) --Draw the menu first
- local e = {os.pullEvent()} --Pull an event and put the returned values into a table
- if e[1] == "key" then --If it's a key...
- if e[2] == keys.down then -- ... and it's the down arrow
- selector = selector < #menu_options and selector+1 or 1 --Increment the selector if the selector < #menu_options. Otherwise reset it to 1
- elseif e[2] == keys.up then
- selector = selector > 1 and selector-1 or #menu_options --Decrement the selector if the selector > 1. Otherwise, reset it to #menu_options
- elseif e[2] == keys.enter then
- break --Break out of the loop
- end
- elseif e[1] == "mouse_click" then
- local value = checkClick(e[3], e[4]) --Check the mouse click
- if value then --If checkClick returns a value and not false
- selector = value --Set the selector to that value and break out of the loop
- break --um what was this
- end
- end
- end
- term.setTextColor(colors.green)
- term.setBackgroundColor(colors.cyan)
- term.clear()
- if selector == 1 then
- local modem = peripheral.wrap("back")
- modem.open(rchannel)
- -- Asking how far it is
- local printcentred =
- function(text)
- local maxw, maxh = term.getSize() --screen dimensions
- local curx, cury = term.getCursorPos() --cursor pos
- term.setCursorPos((maxw-#text)/2,cury) --set it to the point where write will make the text centred
- term.write(text) --write the text
- term.setCursorPos(curx,cury+1) --return the cursor to the same position on the next line
- end
- print("Put your device over the terminal.")
- --Wait for reply
- while true do
- modem.transmit(channel, rchannel, "hey")
- local checkevent, dmside, drschannel, drchannel, dmessage, ddistance = os.pullEvent("modem_message")
- if ddistance < 3 and dmessage == "okay fam" then
- --Send that ship
- modem.transmit(channel, rchannel, "open plz")
- end
- if dmessage == "failure" then
- sleep(0.5)
- end
- end
- end
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