Also handle older engine version with the app script.

misc/scripts_app/app/SConstruct

@@ -64,6 +64,91 @@ def setup_repository(data, clone_path, branch = 'master'):
 
     os.chdir(cwd)
 
+
+def update_repository(data, clone_path, branch = 'master'):
+    cwd = os.getcwd()
+
+    full_path = cwd + clone_path + data[1] + '/'
+    
+    if not os.path.isdir(full_path):
+        os.chdir(cwd + clone_path)
+
+        subprocess.call(clone_command.format(data[0][repository_index], data[1]), shell=True)
+
+    os.chdir(full_path)
+
+    subprocess.call('git reset', shell=True)
+    subprocess.call('git reset --hard', shell=True)
+    subprocess.call('git clean -f -d', shell=True)
+    subprocess.call('git checkout -B ' + branch + ' origin/' + branch, shell=True)
+    subprocess.call('git reset', shell=True)
+    subprocess.call('git reset --hard', shell=True)
+    subprocess.call('git clean -f -d', shell=True)
+    subprocess.call('git pull origin ' + branch, shell=True)
+
+    process = subprocess.Popen('git rev-parse HEAD', shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    output = process.communicate()[0].decode().strip()
+
+    if data[1] not in target_commits:
+        target_commits[data[1]] = {}
+
+    target_commits[data[1]][branch] = output
+
+    os.chdir(cwd)
+
+def validate_repository_origin(data, clone_path, branch = 'master'):
+    full_path = os.path.abspath(clone_path)
+
+    if not os.path.isdir(full_path):
+        return
+
+    cwd = os.getcwd()
+    os.chdir(full_path)
+
+    res = subprocess.run('git remote -v', shell=True, capture_output=True)
+
+    resstr = res.stdout.decode('ascii')
+    resarr = resstr.split("\n")
+    res_orig = []
+
+    for l in resarr:
+        if "origin" in l:
+            res_orig.append(l)
+
+    if len(res_orig) == 0:
+        print("The repository " + clone_path + " does not seem to have an origin remote. Adding it.")
+
+        subprocess.call('git remote add origin ' + data[0][repository_index], shell=True)
+
+        os.chdir(cwd)
+
+        return
+
+    for l in data[0]:
+        for ll in res_orig:
+            if l in ll:
+                os.chdir(cwd)
+
+                return
+
+    rind = 0
+
+    if 'git@' in res_orig[0]:
+        rind = 1
+
+    subprocess.call('git remote remove origin', shell=True)
+    subprocess.call('git remote add origin ' + data[0][rind], shell=True)
+    subprocess.call('git pull origin', shell=True)
+    subprocess.call('git checkout origin/' + branch, shell=True)
+
+    print('Updated git remote origin in ' + clone_path)
+
+    os.chdir(cwd)
+
+def update_engine():
+    validate_repository_origin(module_config.engine_repository, './pandemonium_engine/', module_config.pandemonium_branch)
+    update_repository(module_config.engine_repository, '/', module_config.pandemonium_branch)
+
 engine_abspath = os.path.abspath(module_config.engine_repository[1])
 
 if not os.path.isdir(engine_abspath):
@@ -78,6 +163,9 @@ if not os.path.isdir(engine_abspath):
         repository_index = 1
 
     setup_repository(module_config.engine_repository, '/', module_config.pandemonium_branch)
+else:
+    if not os.path.isfile('pandemonium_engine/misc/scripts_app/SConstruct'):
+        update_engine()
 
 
 SConscript("pandemonium_engine/misc/scripts_app/SConstruct")