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editor.p8
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editor.p8
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pico-8 cartridge // http://www.pico-8.com
version 32
__lua__
local content = {
"todo: editor",
"",
"press esc to quit"
}
local caretx = 1
local carety = 1
local caretbig = false
local normalmode = {}
local inputmode = {}
local commandmode = {}
local mode = normalmode
local nextmode = mode
local commandline = ""
local commandlinecaret = 1
local isctrldown = false
local isshiftdown = false
local prevkey = nil
function resetblink()
tc = 0
end
function _init()
tc = 0
-- enable keyboard
poke(0x5f2d, 1)
end
function setmode(mode)
nextmode = mode
end
function updatemode()
mode = nextmode
end
function _update()
tc += 1
end
function returntomain()
load("nocart.p8")
run()
end
function updatecaret()
local posaftertext = 1
if nextmode ~= inputmode then
posaftertext = 0
end
carety = max(min(carety, #content), 1)
caretx = max(min(caretx, #content[carety] + posaftertext), 1)
caretbig = caretx == 1 or caretx <= #content[carety]
end
function normalmode._keydown(key)
if prevkey ~= nil then
if key == "lshift" or key == "rshift" or
key == "lctrl" or key == "rctrl" or
key == "lalt" or key == "ralt" then
return
elseif key >= "0" and key <= "9" then
prevkey = prevkey .. key
elseif prevkey == "escape" and key == "escape" then
returntomain()
elseif prevkey == "d" and key == "d" then
deli(content, carety)
if #content == 0 then
content[1] = ""
end
caretx = 1
updatecaret()
elseif prevkey == "d" and key == "w" then
local delstartpos = caretx
local delendpos = nil
local foundpos = content[carety]:find(" ", caretx)
if foundpos ~= nil then
delendpos = foundpos
elseif #content[carety] == 0 and #content == 1 then
caretx = 1
carety = 1
content[1] = ""
delstartpos = nil
elseif #content[carety] == 0 then
caretx = 1
deli(content, carety)
delstartpos = nil
else
delendpos = #content[carety] + 1
end
if delstartpos ~= nil then
if delendpos ~= nil then
content[carety] = content[carety]:sub(1, delstartpos - 1) .. "" .. content[carety]:sub(delendpos + 1)
else
content[carety] = content[carety]:sub(1, delstartpos - 1)
end
end
updatecaret()
elseif prevkey == "g" and key == "g" then
carety = 1
caretx = 1
updatecaret()
elseif isshiftdown and key == "g" then
local num = tonum(prevkey)
if num ~= nil then
carety = num
caretx = 1
updatecaret()
end
end
prevkey = nil
elseif key >= "1" and key <= "9" then
prevkey = key
elseif key == "h" then
if caretx == 1 and carety > 1 then
carety -= 1
caretx = #content[carety]
else
caretx -= 1
end
updatecaret()
elseif key == "j" then
carety += 1
updatecaret()
elseif key == "k" then
carety -= 1
updatecaret()
elseif key == "l" then
if caretx == #content[carety] and carety < #content then
carety += 1
caretx = 1
else
caretx += 1
end
updatecaret()
elseif key == "d" then
prevkey = key
elseif key == "w" then
local pos, posend = content[carety]:find(" %S", caretx)
if pos ~= nil then
caretx = posend
elseif carety < #content then
carety += 1
caretx = 1
else
caretx = #content[carety]
end
updatecaret()
elseif key == "e" then
local pos, posend = content[carety]:find("%S ", caretx + 1)
if pos ~= nil then
caretx = pos
elseif caretx >= #content[carety] and carety < #content then
carety += 1
caretx = 1
else
caretx = #content[carety]
end
updatecaret()
elseif key == "b" then
if caretx == 1 and carety > 1 then
carety -= 1
caretx = #content[carety]
end
local pos, posend = content[carety]:reverse():find("%S ", #content[carety] - caretx + 2)
if pos == nil then
caretx = 1
else
caretx = #content[carety] - posend + 2
end
updatecaret()
elseif key == "escape" then
prevkey = key
elseif key == "a" then
if isshiftdown then
caretx = #content[carety] + 1
else
caretx += 1
end
setmode(inputmode)
updatecaret()
elseif key == "i" then
setmode(inputmode)
elseif isshiftdown and key == "g" then
carety = #content
caretx = 1
elseif key == "g" then
prevkey = key
elseif key == "o" then
if not isshiftdown then
carety += 1
end
add(content, "", carety)
setmode(inputmode)
updatecaret()
elseif key == "x" and caretbig then
if caretbig then
if carety < #content and #content[carety] == 0 then
deli(content, carety)
else
content[carety] = content[carety]:sub(1, caretx - 1) .. content[carety]:sub(caretx + 1)
end
end
updatecaret()
end
end
function normalmode._keyup(key)
end
function normalmode._textinput(text)
if text == ":" then
commandline = ":"
setmode(commandmode)
end
if text == "0" then
caretx = 1
updatecaret()
elseif text == "$" then -- TODO: fix input filtering
caretx = #content[carety]
updatecaret()
end
end
function normalmode._drawstatusline()
print("line " .. carety .. "/" .. #content, 1, 122, 2)
print(" 6/8192 ", 65, 122, 2)
print("-", 123, 120, 6)
print("-", 123, 122, 2)
print("-", 123, 124, 2)
end
function normalmode._drawcaret()
if nextmode == inputmode then
nextmode._drawcaret()
elseif tc % 16 < 8 or tc < 16 then
if caretbig then
rectfill(caretx*4-4, carety*6 + 2, caretx*4, carety*6 + 2 + 5, 8)
else
rectfill(caretx*4-4, carety*6 + 3, caretx*4, carety*6 + 3 + 4, 8)
end
end
end
function inputmode._keydown(key)
if key == "escape" or (isctrldown and key == "c") then
caretx -= 1
setmode(normalmode)
updatecaret()
elseif key == "backspace" then
if caretx > 1 then
content[carety] = content[carety]:sub(1, caretx - 2) .. content[carety]:sub(caretx)
caretx -= 1
updatecaret()
end
elseif key == "return" then
add(content, content[carety]:sub(caretx), carety + 1)
content[carety] = content[carety]:sub(1, caretx - 1)
carety += 1
caretx = 1
updatecaret()
end
end
function inputmode._keyup(key)
end
function inputmode._textinput(text)
content[carety] = content[carety]:sub(1, caretx - 1) .. text .. content[carety]:sub(caretx)
caretx += 1
updatecaret()
end
function inputmode._drawstatusline()
print("-- insert --", 1, 122, 2)
end
function inputmode._drawcaret()
if nextmode == normalmode then
nextmode._drawcaret()
elseif tc % 16 < 8 or tc < 16 then
if caretbig then
rectfill(caretx*4-4, carety*6 + 2, caretx*4-4, carety*6 + 2 + 5, 8)
else
rectfill(caretx*4-4, carety*6 + 3, caretx*4-4, carety*6 + 3 + 4, 8)
end
end
end
function commandmode._keydown(key)
if key == "escape" then
commandlinecaret = 1
setmode(normalmode)
elseif key == "return" then
commandlinecaret = 1
if commandline == ":q" then
returntomain()
else
setmode(normalmode)
end
elseif key == "delete" then
commandline = commandline:sub(1, commandlinecaret) .. commandline:sub(commandlinecaret + 2)
elseif key == "backspace" then
if commandlinecaret > 1 then
commandline = commandline:sub(1, commandlinecaret - 1) .. commandline:sub(commandlinecaret + 1)
commandlinecaret -= 1
commandlinecaret = max(commandlinecaret, 1)
elseif #commandline <= 1 then
setmode(normalmode)
end
elseif key == "left" then
commandlinecaret -= 1
commandlinecaret = max(commandlinecaret, 1)
elseif key == "right" then
commandlinecaret += 1
commandlinecaret = min(commandlinecaret, #commandline)
end
end
function commandmode._keyup(key)
end
function commandmode._textinput(text)
commandline = commandline:sub(1,commandlinecaret) .. text .. commandline:sub(commandlinecaret + 1)
commandlinecaret += 1
commandlinecaret = min(commandlinecaret, #commandline)
end
function commandmode._drawstatusline()
commandmode._drawcaretextra()
print(commandline, 1, 122, 2)
end
function commandmode._drawcaret()
--no op
end
function commandmode._drawcaretextra()
if tc % 16 < 8 or tc < 16 then
if commandlinecaret == #commandline then
rectfill(commandlinecaret * 4, 121, commandlinecaret * 4 + 4, 126, 14)
else
rectfill(commandlinecaret * 4, 121, commandlinecaret * 4, 126, 14)
end
end
end
function _keydown(key)
resetblink()
updatemode()
if key == "lctrl" or key == "rctrl" then
isctrldown = true
elseif key == "lshift" or key == "rshift" then
isshiftdown = true
end
mode._keydown(key)
end
function _keyup(key)
updatemode()
if key == "lctrl" or key == "rctrl" then
isctrldown = false
elseif key == "lshift" or key == "rshift" then
isshiftdown = false
end
mode._keyup(key)
end
function _textinput(text)
mode._textinput(text)
end
function _touchup()
end
function _draw()
-- render background
cls(1)
rectfill(0, 0, 128, 7, 8)
mode._drawcaret()
-- render dummy content
color(6)
for i,v in ipairs(content) do
print(v, 1, 3 + i*6)
end
-- render toolbar
rectfill(3, 1, 10, 7, 14)
print("+", 2, -1, 8)
print("0", 6, 2, 8)
print("+", 15, 2, 14)
rectfill(0, 121, 128, 128, 8)
mode._drawstatusline()
end
__gfx__
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