4 replies to this topic

[KingofGamesYami]

Alright, so I was bored and I saw a post in Ask A Pro where someone was creating a menu, and I thought, "You know, I could probably make a simple yet flexible menu". It turned out a bit better than I expected, and a lot more challanging. However, I present the final result to you today.

Here's how it works: You give the function a title and a bunch of options. It displays the title and allows the users to scroll through the options, creating multiple pages if necessary. Additionally, if you run it on an advanced computer (this is compatible with normal computer), it will color the brackets yellow. There's probably a million different ways to code this thing, but here's what I've come up with: Demo with GravityScore & 1lann's HTML Emulator

code

function menu( title, ... )
    --edit the background color to make the GUI more unique
	term.setBackgroundColor( colors.black )
	local debug = false --#turn to true to see what it's thinking
	local tArgs = { ... }
	local pages = {[1]={}}
	for i = 1, #tArgs, 1 do
		if #pages[ #pages ] == 7 then
			pages[ #pages + 1 ] = {}
		end
		pages[ #pages ][ #pages[#pages] + 1 ] = tArgs[ i ]
	end
	local maxLen = 0
	for k, v in ipairs( tArgs ) do
		if #v > maxLen then maxLen = #v end
	end
	local maxx, maxy = term.getSize()
	if maxLen > maxx - 20 then
		error( 'largest string is too large', 2 )
	end
	local centerx = math.ceil( maxx/2 )
	local centery
	local yValue = {}
	local page = 1
	local selected = math.ceil( #pages[ page ] / 2 )
	local function render()
		local tbl = pages[ page ]
		centery = (maxy/2) - #tbl/2
		term.clear()
		term.setCursorPos( centerx - #title/2 + 1, 2 )
		term.write( title )
		for i = 1, #tbl do
			term.setCursorPos( centerx - (#tbl[i]/2), centery + i )
			yValue[ i ] = centery + i
			term.write( tbl[ i ] )
		end
		if pages[ page - 1 ] then
			term.setCursorPos( 3, centery + #tbl/2 + 1 )
			term.write( "previous" )
		end
		if pages[ page + 1 ] then
			term.setCursorPos( maxx - 5, centery + #tbl/2 + 1 )
			term.write( "next" )
		end
		local str = "(" .. page .. "/" .. #pages .. ")"
		term.setCursorPos( centerx - (#str/2), maxy )
		term.write( str )
	end
	while true do
		render()
		if debug then
			term.setCursorPos( 1, 1 )
			term.write( selected )
			term.setCursorPos( 1, 2 )
			term.write( page )
		end
		if term.isColor() then
			term.setTextColor( colors.yellow )
		end
		if selected == "previous" and not pages[ page - 1 ] then
			selected = math.ceil( #pages[ page ]/2 )
		elseif selected == "next" and not pages[ page + 1 ] then
			selected = math.ceil( #pages[ page ]/2 )
		end
		if type( selected ) == "number" then
			term.setCursorPos( centerx - (#pages[page][selected]/2) - 3, yValue[ selected ] )
			term.write( "[" )
			term.setCursorPos( centerx + (#pages[page][selected]/2) + 2, yValue[ selected ] )
			term.write( "]" )
		elseif selected == "previous" then
			term.setCursorPos( 1, centery + #pages[ page ]/2 + 1 )
			term.write( "[" )
			term.setCursorPos( 12, centery + #pages[ page ]/2 + 1 )
			term.write( "]" )
		elseif selected == "next" then
			term.setCursorPos( maxx - 7, centery + #pages[ page ]/2 + 1 )
			term.write( "[" )
			term.setCursorPos( maxx, centery + #pages[ page ]/2 + 1 )
			term.write( "]" )
		end
		if term.isColor() then
			term.setTextColor( colors.white )
		end
		local event, key = os.pullEvent( "key" )
		local old = selected
		if key == 200 and type( selected ) == "number" and pages[ page ][ selected - 1 ] then
			selected = selected - 1
		elseif key == 208 and type( selected ) == "number" and pages[ page ][ selected + 1 ] then
			selected = selected + 1
		elseif key == 28 then
			if type( selected ) == "number" then
				return pages[ page ][ selected ]
			elseif selected == "next" and pages[ page + 1 ] then
				page = page + 1
			elseif selected == "previous" and pages[ page - 1 ] then
				page = page - 1
			end
		elseif key == 203 then
			if selected == "next" then
				selected = math.ceil( #pages[ page ]/2 )
			elseif type( selected ) == "number" and pages[ page - 1 ] then
				selected = "previous"
			end
		elseif key == 205 then
			if selected == "previous" then
				selected = math.ceil( #pages[ page ]/2 )
			elseif type( selected ) == "number" and pages[ page + 1 ] then
				selected = "next"
			end
		end
	end
end

pastebin get gbxiZJtc

Better description of usage:

local option = menu( "Select an option", "option_1", "option_2", "option_3" )
if option == "option_3" then
--#do stuff
elseif option == "option_2" then
--#do stuff
elseif option == "option_1" then
--#do stuff
end

Edited by KingofGamesYami, 22 August 2014 - 02:17 PM.

[KingofGamesYami]

Update: Now with Dynamic Brackets!

[rhyleymaster]

Screenshots pls

[Lignum]

rhyleymaster, on 21 August 2014 - 05:41 PM, said:

Screenshots pls

The post links to a demo. No screenshots necessary.

[KingofGamesYami]

Updated the pastebin with Dynamic Brackets (man, I thought I already did, but...)