nbs format now saves song length again, fixed typo (nbt instead of nbs)

Author: HielkeMaps

scripts/draw_window_update/draw_window_update.gml

@@ -9,6 +9,7 @@ else draw_text(x1 + 8, y1 + 8, "Changelist")
 draw_set_font(fnt_main)
 if (window = w_update) draw_text(x1 + 32, y1 + 32, "Thank you for upgrading to version " + version + "!")
 fullstr = ""
+fullstr +=  "Changes in v3.5.2 (2019.08.06):\n* NBS format updated to version 3. Now stores song length again\n\n"
 fullstr +=  "Changes in v3.5.1 (2019.07.14):\n* Fixed MIDI Import crash\n\n"
 fullstr +=  "Changes in v3.5.0 (2019.07.11):\n* Added Stereo.\n* Stereo added to Datapack Export.\n* Improved MIDI import, again.\n* Added settings to enhance performance.\n New sprites for note blocks in the dark theme.\n\n"
 fullstr +=  "Changes in v3.4.0 (2019.05.11):\n* Added dark theme.\n* Datapack export: added option to let nearby players hear your music too.\n* Improved MIDI import.\n* NBS format now stores its version for future proofing. This means that\n   songs made here can't be opened in older versions of Note Block Studio.\n\n"

scripts/load_song/load_song.gml

@@ -25,14 +25,19 @@ if (file_ext = ".nbs") {
 	byte2 = buffer_read_byte()
 
 	if(byte1 = 0 && byte2 = 0){
-		song_nbt_version = buffer_read_byte()
-		if song_nbt_version < nbt_version message("Warning: You are opening an older NBS file. Saving this file will make it incompatible with older Note Block Studio versions.","Warning")
-		if song_nbt_version > nbt_version message("Warning: You are opening an NBS file created in a later version of Note Block Studio. It may crash when opening.","Warning")
+		song_nbs_version = buffer_read_byte()
+		if song_nbs_version < nbs_version message("Warning: You are opening an older NBS file. Saving this file will make it incompatible with older Note Block Studio versions.","Warning")
+		if song_nbs_version > nbs_version message("Warning: You are opening an NBS file created in a later version of Note Block Studio. It may crash when opening.","Warning")
 		song_first_custom_index = buffer_read_byte()
 		custom_index_diff = first_custom_index - song_first_custom_index
+		
+		//From nbt version 3, we save the song length again
+		if(song_nbs_version > 3){
+			buffer_read_short()
+		}
 	}else{
 		message("Warning: You are opening an older NBS file. Saving this file will make it incompatible with older Note Block Studio versions.","Warning")
-		song_nbt_version = 0
+		song_nbs_version = 0
 		custom_index_diff = 0
 		song_first_custom_index = 0
 	}
@@ -109,7 +114,7 @@ if (file_ext = ".nbs") {
         if (layervol[b] = -1) layervol[b] = 100
         layervol[b] = median(0, layervol[b], 100)
         if (layervol[b] < 100) realvolume = 1
-		if song_nbt_version>=2 {
+		if song_nbs_version>=2 {
 			layerstereo[b] = buffer_read_byte()
 		}
 		else {

scripts/macros/macros.gml

@@ -1,7 +1,7 @@
 #macro gm_runtime_version "2.1.5.246"
-#macro version_date "2019.05.11"
-#macro version "3.5.1"
-#macro nbt_version 2
+#macro version_date "2019.08.06"
+#macro version "3.5.2"
+#macro nbs_version 3
 
 #macro link_download "https://github.com/HielkeMinecraft/OpenNoteBlockStudio/releases/latest"
 #macro link_topic "https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-tools/2945101-open-minecraft-note-block-studio"

scripts/save_song/save_song.gml

@@ -11,10 +11,16 @@ if (fn = "" || filename_ext(filename) != ".nbs") {
 if (selected > 0) selection_place(0)
 buffer = buffer_create(8, buffer_grow, 1)
 
+//First 2 bytes 0 to indicate new nbs format
 buffer_write_short(0)
-buffer_write_byte(nbt_version)
+
+buffer_write_byte(nbs_version)
 buffer_write_byte(first_custom_index)
 
+//song length (ticks)
+buffer_write_short(enda)
+
+//layer count
 buffer_write_short(endb2)
 
 buffer_write_string_int(song_name)