More compatibility mode stuff, also should work

In game I mean

mess/tmpc.lua

@@ -27,6 +27,54 @@ settings.define("mplayer.colors.status", {
     default = 0x80EF80, -- #80EF80
     type = number
 })
+local drive = peripheral.find("disk_drive")
+if not drive then
+    printError("No drive found, starting in dummy mode")
+    local fp = io.open("noita.dfpwm", "rb")
+    if fp == nil then
+        printError("No sample file found, are you running it on a real* computer without a tape drive?")
+        return
+    end
+    local size = fp:seek("end", 0)
+    fp:seek("set", 0)
+    drive = {
+        _pos = 0,
+        _fp = fp,
+        _state = "STOPPED",
+        seek = function(howMuch)
+            drive._pos = math.min(drive.getSize(), math.max(0, drive._pos + howMuch))
+        end,
+        getPosition = function()
+            return drive._pos
+        end,
+        read = function(n)
+            local out = { drive._fp:read(n) }
+            drive.seek(n or 1)
+            return table.unpack(out)
+        end,
+        getSize = function()
+            return size
+        end,
+        getState = function()
+            return drive._state
+        end,
+        play = function()
+            drive._state = "PLAYING"
+        end,
+        stop = function()
+            drive._state = "STOPPED"
+        end,
+        isReady = function()
+            return true
+        end,
+        _tick = function()
+            if drive._state == "PLAYING" then
+                drive.read(600)
+            end
+        end,
+    }
+    os.sleep(1)
+end
 
 local function time2str(ti)
     ti = math.floor(ti)
@@ -34,36 +82,15 @@ local function time2str(ti)
     return string.format("%02d:%02d", m, s)
 end
 
-local function read32(fp)
+local function read32()
     local v = 0
     for i = 1, 4 do
-        local b = string.byte(fp:read(1), 1)
+        local b = string.byte(drive.read(1), 1)
         v = bit32.bor(bit32.lshift(v, 8), b)
     end
     return v
 end
 
-local drive = peripheral.find("disk_drive")
-if not drive then
-    printError("No drive found, starting in dummy mode")
-    drive = {
-        _pos = 0,
-        seek = function(howMuch)
-            drive._pos = math.min(drive.getSize(), math.max(0, drive._pos + howMuch))
-        end,
-        getPosition = function()
-            return drive._pos
-        end,
-        getSize = function()
-            return 360000 * 64
-        end,
-        _tick = function()
-            drive._pos = drive._pos + 600
-        end
-    }
-    os.sleep(1)
-end
-
 local help = {}
 
 for line in ([[# Movement:
@@ -198,6 +225,7 @@ local mplayer = {
                 elseif key == keys.enter then
                     drive.seek(-drive.getSize())
                     drive.seek(self.songs[self.screens[2].cursor].offset)
+                    drive.play()
                     self.currentSong = self.screens[2].cursor
                 end
             end,
@@ -263,21 +291,6 @@ local function setupTerminal()
     term.clear()
 end
 
-local fp = io.open("noita.dfpwm", "rb")
-if fp ~= nil then
-    for i = 1, 24 do
-        local offset = read32(fp)
-        local length = read32(fp)
-        local title = fp:read(117)
-        local zero = math.min(64, title:find("\x00") or 0)
-        title = title:sub(1, zero)
-        if length > 0 and offset > 0 then
-            mplayer.songs[i] = { offset = offset, length = length, title = title }
-        end
-    end
-    fp:close()
-end
-
 setupTerminal()
 
 local tw, th = term.getSize()
@@ -309,6 +322,9 @@ function()
         -- Statusline
         term.setCursorPos(1, th)
         term.clearLine()
+
+        local timeString = string.format("[%s:%s]", time2str(time), time2str(duration))
+        if drive.getState() == "PLAYING" then
             term.setTextColor(mplayer.colors.status)
             term.write("Playing: ") -- 9 characters
 
@@ -324,7 +340,6 @@ function()
 
             -- Statusline text
             term.setCursorPos(10, th)
-        local timeString = string.format("[%s:%s]", time2str(time), time2str(duration))
             local w = tw - #timeString - 10 -- "Playing: " plus extra space
 
             term.setTextColor(mplayer.colors.current)
@@ -335,6 +350,7 @@ function()
                 local txt = title .. " ::: " .. title
                 term.write(txt:sub(off, off + w - 1))
             end
+        end
         term.setTextColor(mplayer.colors.status)
         term.setCursorPos(tw - #timeString + 1, th)
         term.write(timeString)
@@ -396,6 +412,24 @@ function()
             end
         elseif ev == "term_resize" then
             tw, th = term.getSize()
+        elseif ev == "tape_removed" then
+            mplayer.songs = {}
+        elseif ev == "tape_inserted" then
+            drive.stop()
+            drive.seek(-drive.getSize())
+            for i = 1, 48 do
+                local offset = read32()
+                local length = read32()
+                local title = drive.read(117)
+                title = title:sub(1, title:find("\x00"))
+                if length > 0 and offset > 0 then
+                    mplayer.songs[i] = {
+                        title = title,
+                        offset = offset,
+                        length = length
+                    }
+                end
+            end
         elseif ev ~= "timer" then
             local m = term.redirect(peripheral.wrap("right"))
             io.write(ev .. " ")
@@ -413,19 +447,36 @@ function()
 end,
 function()
     local oldSong = nil
+    local oldDriveState = nil
+    local oldTapeState = nil
     while true do
         mplayer.currentSong = 0
-        if drive._tick then drive._tick() end
+        if drive._tick then drive._tick() end -- dummy mode
+
+        local tapeState = drive.isReady()
+        if tapeState ~= oldTapeState then
+            os.queueEvent(tapeState and "tape_inserted" or "tape_removed")
+            oldTapeState = tapeState
+        end
+
+        local driveState = drive.getState()
+        if driveState ~= oldDriveState then
+            os.queueEvent("drive_state", driveState)
+            oldDriveState = driveState
+        end
+
         local pos = drive.getPosition()
         for i, song in ipairs(mplayer.songs) do
             if pos >= song.offset and pos < (song.offset + song.length) then
                 mplayer.currentSong = i
             end
         end
+
         if oldSong ~= mplayer.currentSong then
             os.queueEvent("song_change")
             oldSong = mplayer.currentSong
         end
+
         os.sleep(0.1)
     end
 end