forked from hkc/cc-stuff
139 lines
4.1 KiB
Lua
139 lines
4.1 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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term.clear()
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local screen_w, screen_h = term.getSize()
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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 function textProgress(p, c1, c2, fmt, ...)
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local tw = term.getSize()
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local str = string.format(fmt, ...)
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local w1 = math.ceil(p * tw)
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local w2 = tw - w1
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local bg = term.getBackgroundColor()
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term.setBackgroundColor(c1)
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term.write(str:sub(1, w1))
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local rem = w1 - #str
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if rem > 0 then
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term.write(string.rep(" ", rem))
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end
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term.setBackgroundColor(c2)
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term.write(str:sub(w1 + 1, w1 + w2))
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rem = math.min(tw - #str, w2)
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if rem > 0 then
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term.write(string.rep(" ", rem))
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end
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term.setBackgroundColor(bg)
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end
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parallel.waitForAll(
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function()
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while running do
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if drive.isReady() then
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local pos, size = drive.getPosition(), drive.getSize()
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for i = 1, math.min(screen_h - 2, 48) do
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term.setCursorPos(1, i)
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term.clearLine()
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local song = table_of_contents[i]
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if song then
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local is_playing = pos >= song.offset and pos < song.ending
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local s = string.format("#%2d %9s %s", i, bytes2time(song.length), song.title)
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if is_playing then
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local p = (pos - song.offset) / song.length
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textProgress(p, colors.lime, colors.lightGray, s)
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else
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term.setBackgroundColor(i % 2 == 0 and colors.gray or colors.black)
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term.write(s)
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end
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end
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end
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term.setCursorPos(1, screen_h)
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textProgress(pos / size, colors.red, colors.gray, "%8d / %8d [%s]", pos, size, drive.getState())
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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, 2)
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if drive.isReady() and y <= #table_of_contents then
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drive.seek(-drive.getSize())
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drive.seek(table_of_contents[y].offset)
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drive.play()
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end
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elseif ev == "term_resize" then
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term.clear()
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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):gsub("\x00", "")
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if length > 0 then
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table.insert(table_of_contents, {
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title = title,
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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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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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