Screensaver

local size={term.getSize()}
local tPixels={}
for x=1,size[1]-1 do
tPixels[x]={}
for y=1,size[2] do
tPixels[x][y]=' '
end
end

local function render()
term.clear()
term.setCursorPos(1,1)
for y=1,#tPixels[1] do
if y~=1 then
print('')
end
for x=1,#tPixels do
write(tPixels[x][y])
end
end
end

local function cycle()
for x=1,#tPixels do
for y=#tPixels[x],2,-1 do
tPixels[x][y]=(tPixels[x][y-1]==' ' and ' ') or ((tPixels[x][y]~=' ' and tPixels[x][y]) or string.char(math.random(32,126)))
end
--[[for x=1,#tPixels do
local intC=nil
for y=2,5 do
if tPixels[x][y]==' ' then
intC=true
end
end
if not intC then
tPixels[x][1]=' '
end
end]]
end
end

local function create()
tPixels[math.random(1,#tPixels)][1]=string.char(math.random(32,126))
tPixels[math.random(1,#tPixels)][1]=' '
tPixels[math.random(1,#tPixels)][1]=' '
end

local bRunning=true
while bRunning do
cycle()
create()
render()
    local timer=os.startTimer(.1)
while true do
local sEvent, param = os.pullEvent()
if (sEvent=='timer' and param==timer) then
break
elseif sEvent=='key' then
bRunning=nil
break
end
end
end