Added progressbar

tape-playlist.lua

@@ -7,8 +7,11 @@ end
 
 local running = true
 
+term.clear()
+local screen_w, screen_h = term.getSize()
 local table_of_contents = {}
 
+
 local function read32()
     local v = 0
     for i = 1, 4 do
@@ -24,23 +27,56 @@ local function bytes2time(b)
     return string.format("%dm, %ds", math.floor(s / 60), s % 60)
 end
 
-term.clear()
-local screen_w, screen_h = term.getSize()
+local function textProgress(p, c1, c2, fmt, ...)
+    local tw = term.getSize()
+    local str = string.format(fmt, ...)
+    local w1 = math.ceil(p * tw)
+    local w2 = tw - w1
+
+    local bg = term.getBackgroundColor()
+    term.setBackgroundColor(c1)
+    term.write(str:sub(1, w1))
+    local rem = w1 - #str
+    if rem > 0 then
+        term.write(string.rep(" ", rem))
+    end
+
+    term.setBackgroundColor(c2)
+    term.write(str:sub(w1 + 1, w1 + w2))
+
+    rem = math.min(tw - #str, w2)
+    if rem > 0 then
+        term.write(string.rep(" ", rem))
+    end
+
+    term.setBackgroundColor(bg)
+end
+
 
 parallel.waitForAll(
 function()
     while running do
-        for i = 1, math.min(screen_h - 1, 48) do
-            term.setCursorPos(1, i)
-            term.clearLine()
-            local song = table_of_contents[i]
-            if song then
-                term.write(string.format("#%2d %9s %s", i, bytes2time(song.length), song.title))
+        if drive.isReady() then
+            local pos, size = drive.getPosition(), drive.getSize()
+            for i = 1, math.min(screen_h - 2, 48) do
+                term.setCursorPos(1, i)
+                term.clearLine()
+                local song = table_of_contents[i]
+                if song then
+                    local is_playing = pos >= song.offset and pos < song.ending
+                    local s = string.format("#%2d %9s %s", i, bytes2time(song.length), song.title)
+                    if is_playing then
+                        local p = (pos - song.offset) / song.length
+                        textProgress(p, colors.lime, colors.lightGray, s)
+                    else
+                        term.setBackgroundColor(i % 2 == 0 and colors.gray or colors.black)
+                        term.write(s)
+                    end
+                end
             end
+            term.setCursorPos(1, screen_h)
+            textProgress(pos / size, colors.red, colors.gray, "%8d / %8d [%s]", pos, size, drive.getState())
         end
-        term.setCursorPos(1, screen_h)
-        term.clearLine()
-        term.write(string.format("%s - %d", drive.getState(), drive.getPosition()))
         os.sleep(0.1)
     end
 end,