I made a program that can run code in the esoteric language of BrainF***.
EDIT: Forgot to mention that there are no loops or byte write functions yet.
EDIT 2: V0.2 adds byte reading compability (aka the dot OR . )
EDIT 3: V0.3 adds an output screen, which means that you don’t have to restart the program to return to your code.
EDIT 4: V0.4 makes compiling slower, but adds graphical improvements and loops.
-- v0.4
function setup()
displayMode(FULLSCREEN_NO_BUTTONS)
supportedOrientations(PORTRAIT_ANY)
code = ""
out = {}
outstr = ""
p=0
trueinfalseout=true
run=false
i=0
loopStart = 0
btns = {Button("Edit", WIDTH-50, 25, color(0, 0, 0, 100), showKeyboard),
Button("Close", WIDTH/2, 25, color(0, 0, 0, 100), close),
Button("Cmpl", 50, 25, color(0, 0, 0, 100), compile),
Button("Clear", WIDTH/2, 100, color(0, 0, 0, 100), clr),
Button("Output", 75, 100, color(0, 0, 0, 100), switchmode),
Button("Paste", WIDTH-63, 100, color(0,0,0,100), paste)}
backbtn = Button("< Back", 100, 75, color(245, 0, 0, 240), switchmode)
textWrapWidth(WIDTH-30)
code = readGlobalData("bfCodeSave") or ""
noStroke()
end
function draw()
if (trueinfalseout) then
background(255, 255, 255, 255)
fill(0, 0, 0, 255)
fontSize(96)
textMode(CENTER)
font("ArialMT")
text("BrainF*** Editor", WIDTH/2, HEIGHT-100)
fill(160, 160, 160, 255)
rect(WIDTH/2, 60, WIDTH, 150)
fill(0, 0, 0, 255)
fontSize(36)
textMode(CORNER)
text(code, 15, HEIGHT/2)
fontSize(24)
for i,v in pairs(btns) do
v:draw()
end
if (run) then
text("Compiling... "..i.."/"..string.len(code), 150, 150)
end
else
background(0, 0, 0, 255)
fill(255, 255, 255, 255)
fontSize(36)
textMode(CENTER)
font("Inconsolata")
text(outstr, WIDTH/2, HEIGHT/2)
fontSize(24)
if (run) then
text("Compiling... "..i.."/"..string.len(code), WIDTH-150, 50)
end
backbtn:draw()
end
if (run) then
c=string.sub(code, i, i)
if (c=="+") then
out[p] = out[p] + 1
elseif (c=="-") then
out[p] = out[p] - 1
elseif (c=="<") then
p = p - 1
if (out[p]==nil) then
out[p]=0
end
elseif (c==">") then
p = p + 1
if (out[p]==nil) then
out[p]=0
end
elseif (c==".") then
outstr = outstr .. string.char(out[p]) .. " "
elseif (i > string.len(code)) then
saveGlobalData("bfCodeSave", code)
for k,v in pairs(out) do
outstr = outstr .. "[" .. k .. "]" .. "=" .. v ..", "
end
run=false
elseif (c=="[") then
loopStart = i
elseif (c=="]") then
if (out[p] < 0 or out[p] > 0) then
i = loopStart
end
end
i = i + 1
end
end
function touched(touch)
if (trueinfalseout) then
for i,v in pairs(btns) do
v:touched(touch)
end
else
backbtn:touched(touch)
end
end
function keyboard(key)
if (key==RETURN) then
hideKeyboard()
elseif (key==BACKSPACE) then
code=string.sub(code, 0, -2)
else
code=code..key
end
end
function compile()
i=0
p=0
out = {}
out[0]=0
outstr = ""
run = true
--[[for i=0, string.len(code) do
c=string.sub(code, i, i)
if (c=="+") then
out[p] = out[p] + 1
elseif (c=="-") then
out[p] = out[p] - 1
elseif (c=="<") then
p = p - 1
if (out[p]==nil) then
out[p]=0
end
elseif (c==">") then
p = p + 1
if (out[p]==nil) then
out[p]=0
end
elseif (c==".") then
outstr = outstr .. string.char(out[p]) .. " "
end
end
saveGlobalData("bfCodeSave", code)
for k,v in pairs(out) do
outstr = outstr .. k .. ": " .. v ..", "
end ]]--
end
function paste()
code = pasteboard.text
end
function clr()
code=""
end
function switchmode()
if (trueinfalseout) then trueinfalseout = false else trueinfalseout=true end
end
--# Button
Button = class()
function Button:init(t,x,y,col,cb)
-- you can accept and set parameters here
self.text = t
self.x = x
self.y = y
self.color = col
self.callback = cb or function() end
end
function Button:draw()
-- Codea does not automatically call this method
noStroke()
rectMode(CENTER)
fill(self.color)
rect(self.x, self.y, string.len(self.text)*fontSize(), fontSize()*1.75)
textMode(CENTER)
fill(0, 0, 0, 118)
text(self.text, self.x, self.y)
end
function Button:touched(touch)
-- Codea does not automatically call this method
if (touch.x > self.x-string.len(self.text)*fontSize()/2 and
touch.x < self.x+string.len(self.text)*fontSize()/2 and
touch.y > self.y-string.len(self.text)*fontSize()/2 and
touch.y < self.y+string.len(self.text)*fontSize()/2 and
touch.state == BEGAN) then
self.callback()
end
end
