Added a module to check DCS environment, to be completed.

userdata/dcs_environment.py

@@ -0,0 +1,49 @@
+"""
+This utility classes provides methods to check players installed DCS environment.
+
+TODO : add method 'is_using_open_beta', 'is_using_stable'
+TODO : [NICE to have] add method to check list of installed DCS modules (could be done either through window registry, or through filesystem analysis)
+TODO : add method 'get DCS install path'
+TODO : add method 'get DCS save path'
+
+"""
+
+import winreg
+
+
+def is_using_dcs_steam_edition():
+    """
+    Check if DCS World : Steam Edition version is installed on this computer
+    :return True if DCS Steam edition is installed,
+            -1 if DCS Steam Edition is registered in Steam apps but not installed,
+            False if never installed in Steam
+    """
+    try:
+        # Note : Steam App ID for DCS World is 223750
+        dcs_path_key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, "Software\\Valve\\Steam\\Apps\\223750")
+        installed = winreg.QueryValueEx(dcs_path_key, "Installed")
+        winreg.CloseKey(dcs_path_key)
+        if installed[0] == 1:
+            return True
+        else:
+            return False
+    except FileNotFoundError as fnfe:
+        return False
+
+
+def is_using_dcs_standalone_edition():
+    """
+    Check if DCS World standalone edition is installed on this computer
+    :return True if Standalone is installed, False if it is not
+    """
+    try:
+        dcs_path_key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, "Software\\Eagle Dynamics\\DCS World")
+        winreg.CloseKey(dcs_path_key)
+        return True
+    except FileNotFoundError as fnfe:
+        return False
+
+
+if __name__ == "__main__":
+    print("Using STEAM Edition : " + str(is_using_dcs_steam_edition()))
+    print("Using Standalone Edition : " + str(is_using_dcs_standalone_edition()))