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mirror of https://github.com/LDDestroier/CC/ synced 2024-11-18 07:44:53 +00:00
ldd-CC/screensaver.lua
2018-12-12 17:49:20 -05:00

112 lines
2.7 KiB
Lua

local tArg = {...}
local scr_x, scr_y = term.getSize()
local mx, my = scr_x/2, scr_y/2
-- special modes for special people
local mouseMode = tArg[1] == "mouse" or tArg[2] == "mouse"
local fuck = tArg[1] == "fuck" or tArg[2] == "fuck"
-- localize functions to increase speed, maybe, I think
local concat, blit = table.concat, term.blit
local sin, cos, rad, abs, sqrt, floor = math.sin, math.cos, math.rad, math.abs, math.sqrt, math.floor
-- rainbow pattern
local palette = {"e","1","4","5","d","9","b","a","2"}
local distance = function(x1, y1, x2, y2)
return sqrt( (x2 - x1) ^ 2 + (y2 - y1) ^ 2 )
end
local randCase = function(str)
local output = ""
for i = 1, #str do
output = output .. ((math.random(0,1) == 1) and str:sub(i,i):upper() or str:sub(i,i):lower())
end
return output
end
local render = function(iterate, xscroll1, yscroll1, xscroll2, yscroll2)
local buffer, cx, cy = {{},{},{}}
for y = 1, scr_y do
buffer[1][y] = {}
buffer[2][y] = {}
buffer[3][y] = {}
for x = 1, scr_x do
cx = 0.66 * ((x - mx) > 0 and 1 or -1) * (abs(x - mx) ^ 1.2)
cy = ((y - my) > 0 and 1 or -1) * (abs(y - my) ^ 1.2)
buffer[1][y][x] = fuck and randCase("fuck"):sub(1+(cx%4),1+(cx%4)) or "\127"
buffer[2][y][x] = palette[1 + floor(
iterate + distance( cx + xscroll1, cy + yscroll1, 0, 0 )
) % #palette] or " "
buffer[3][y][x] = palette[1 + floor(
iterate + distance( cx + xscroll2, cy + yscroll2, 0, 0 )
) % #palette] or " "
end
end
for y = 1, scr_y do
term.setCursorPos(1,y)
-- suka
blit(
concat(buffer[1][y]),
concat(buffer[2][y]),
concat(buffer[3][y])
)
end
end
local main = function()
term.clear()
local wave, evt = 0
local xscroll1, yscroll1, xscroll2, yscroll2 = 0, 0, 0, 0
if mouseMode then
parallel.waitForAny(function()
while true do
evt = {os.pullEvent()}
if evt[1] == "mouse_click" or evt[1] == "mouse_drag" then
if evt[2] == 1 then
xscroll1 = mx - evt[3]
yscroll1 = my - evt[4]
elseif evt[2] == 2 then
xscroll2 = mx - evt[3]
yscroll2 = my - evt[4]
end
end
end
end,
function()
while true do
render(wave, xscroll1, yscroll1, xscroll2, yscroll2)
wave = (wave + 1) % (360 * 7)
sleep(0.05)
end
end)
else
while true do
xscroll1 = -sin(rad(wave * 2)) * scr_x * 0.4
yscroll1 = -cos(rad(wave * 3.5)) * scr_y * 0.4
xscroll2 = -xscroll1
yscroll2 = -yscroll1
render(wave, xscroll1, yscroll1, xscroll2, yscroll2)
wave = (wave + 1) % (360 * 7)
sleep(0.05)
end
end
end
-- wait for keypress to exit program
local waitForInput = function()
local evt
sleep(0.25)
os.pullEvent("key")
end
parallel.waitForAny(main, waitForInput)
term.clear()
term.setCursorPos(1,1)
sleep(0.05)