epas

-- Trapdoor Visualizer for CC:Tweaked Monitors
-- Creates a full screen grid that animates satisfying waves

local mon = peripheral.find("monitor")
if not mon then
    print("No monitor found!")
    return
end

mon.setTextScale(0.5)
mon.setBackgroundColor(colors.white)
mon.clear()

local w, h = mon.getSize()

-- Each "trapdoor" is a 2x2 block of characters
local tiles = {}

-- Build tile map
local function initTiles()
    for y = 1, h do
        tiles[y] = {}
        for x = 1, w do
            tiles[y][x] = false -- false = closed, true = open/dark
        end
    end
end

local function draw()
    for y = 1, h do
        mon.setCursorPos(1, y)
        for x = 1, w do
            if tiles[y][x] then
                mon.setBackgroundColor(colors.gray)
                mon.write(" ")
            else
                mon.setBackgroundColor(colors.lightGray)
                mon.write(" ")
            end
        end
    end
end

-- Create a sweeping diagonal wave (like your screenshot)
local function carveWave()
    local col = math.random(1, w)

    for row = 1, h do
        tiles[row][col] = true

        -- drift left/right
        local r = math.random(3)
        if r == 1 and col > 1 then