forked from hkc/cc-stuff
90 lines
2.4 KiB
Lua
90 lines
2.4 KiB
Lua
local drive = peripheral.find("tape_drive")
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if not drive then
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printError("no tape drive found")
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printError("it's kinda required to play tapes, you know?")
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return
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end
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local running = true
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local table_of_contents = {}
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local function read32()
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local v = 0
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for i = 1, 4 do
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local b = drive.read()
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v = bit32.bor(bit32.lshift(v, 8), b)
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end
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return v
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end
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local function bytes2time(b)
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local s = math.floor(b / 6000)
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if s < 60 then return string.format("%ds", s) end
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return string.format("%dm, %ds", math.floor(s / 60), s % 60)
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end
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local screen_w, screen_h = term.getSize()
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parallel.waitForAll(
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function()
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while running do
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for i = 1, math.min(screen_h, 48) do
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term.setCursorPos(1, i)
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local song = table_of_contents[i]
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if song then
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term.write(string.format("#%2d %9s %s", i, bytes2time(song.length), song.title))
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end
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end
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os.sleep(0.1)
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end
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end,
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function()
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while running do
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local evd = { os.pullEvent() }
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local ev, evd = table.remove(evd, 1), evd
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if ev == "mouse_click" then
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local x, y = table.unpack(evd, 1)
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elseif ev == "term_resize" then
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screen_w, screen_h = term.getSize()
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elseif ev == "tape_present" then
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table_of_contents = {}
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if evd[1] then
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drive.stop()
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drive.seek(-drive.getSize())
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for i = 1, 48 do
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local offset = read32()
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local length = read32()
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local title = drive.read(117)
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table.insert(table_of_contents, {
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title = length > 0 and title or nil,
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offset = offset,
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length = length,
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ending = offset + length
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})
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end
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end
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end
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end
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end,
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function()
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local tape_was_present = nil
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local drive_old_state = nil
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while running do
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local tape_present = drive.isReady()
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if tape_present ~= tape_was_present then
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os.queueEvent("tape_present", tape_present)
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tape_was_present = tape_present
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end
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local drive_state = drive.getState()
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if drive_old_state ~= drive_state then
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os.queueEvent("drive_state", drive_state)
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drive_old_state = drive_state
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end
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os.sleep(0.25)
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end
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end)
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