OOB Support - Flatpak & Wine

Added oob support for default flatpak and wine paths
Added comments

auto_update.py

@@ -8,36 +8,62 @@
 import tarfile
 import hashlib
 
-try:
-    installation = str(sys.argv[1])
-except:
-    installation = '/.steam/root/steamapps/compatdata/284160/pfx/drive_c/users/steamuser/AppData/Local/BeamNG.drive/'
+home = os.path.expanduser("~")
+steam = 'steamapps/compatdata/284160/pfx/drive_c/users/steamuser'
+game = '/AppData/Local/BeamNG.drive/'
+
+custom = False
 
 tags = []
 hash_table = []
+#Names of default maps in the GitHub repo
 default = ['etk', 'jri', 'utah', 'derby', 'hirochi', 'industrial', 'gridmap_v2', 'small_island',]
 
-path = os.path.expanduser("~") + installation
+try:
+    path = str(sys.argv[1])
+    custom = True
+except:
+    path = home + '/.steam/root/' + steam + game
+    if not os.path.exists(path): #Flatpak?
+        path = home + '/.var/app/com.valvesoftware.Steam/.steam/root/' + steam + game
+        if not os.path.exists(path): #Wine?
+            path = home + '/.wine/drive_c/users/' + os.getlogin() + game
 
+#The path did not exist
 if not os.path.exists(path):
-    print('Please make sure that you entered the right path\npython3 auto_update.py PATH_TO_/AppData/Local/BeamNG.drive/')
+    print('\nWas looking for:')
+    if not custom:
+        print(' 1. STEAM .deb\n 2. STEAM flatpak\n 3. WINE  "' + path + '"\nbut found nothing.')
+        print('\nTry adding the equivalent of %LOCALAPPDATA%\LOCAL\BEAMNG.DRIVE as a parameter\n or try the troubleshooting section of the guide.')
+    else:
+        print(' "' + path + '"\nbut found nothing.')
+        print('Verify that your path leads to %LOCALAPPDATA%\LOCAL\BEAMNG.DRIVE')
+    print('\n')
     quit()
 
+#Get the current version to find the correct folder (I can see this breaking - would be better to use latest.lnk)
 with open(path + 'version.txt') as version_file:
   ver = version_file.read().split('.')
-
 version = ver[0] + '.' + ver[1] + '/'
+
+#Path of mods folder
 mods = path + version + 'mods/'
+
+#Path to extract the cache to
 cache = path + version + 'temp/art/'
 
+#Create folders if missing
 if not os.path.exists(cache + '/terrainMaterialCache'):
     os.makedirs(cache + '/terrainMaterialCache')
 
+#Get installed mods
 with open(mods + 'db.json') as file:
     repodb = json.load(file)
 
+#Get supported maps from GitHub
 response = requests.get('https://api.github.com/repos/snoutbug/beamng_terrainmaterialcache/tags').json()
 
+#tag = mod_id
 for tag in response:
     tags.append(str(tag['name']))
 
@@ -55,6 +81,8 @@ def md5(fname):
 for dds in os.listdir(cache + 'terrainMaterialCache/'):
     hash_table.append(md5(cache + 'terrainMaterialCache/' + dds) + '  ' + dds)
 
+#If a used mod is supported by the repo, then only download the textures when there is at least one
+#   texture missing or changed
 try:
     for mod in repodb['mods']:
         mod_id = str(repodb['mods'][mod]['modData'].get('resource_id'))
@@ -78,6 +106,7 @@ def md5(fname):
                     os.remove(filename)
                     break #continue with next mod
 
+    #Same as mods but with different naming conventions
     print('\nLooking for default maps...')
     url = 'https://github.com/SnoutBug/BeamNG_terrainMaterialCache/releases/download/default/'
     for filename in default:
@@ -99,6 +128,8 @@ def md5(fname):
                 break #continue with next map
 
     print('All Done!')
+
+#Remove all partially downloaded files when cancelled
 except KeyboardInterrupt:
     try:
         os.remove(filename)