Update TS2-Redux-Installer.iss

Changes:
- User can now optionally add shortcuts to desktop and/or start menu
- Web links added to start menu for Discord/GitHub
- lsao_cached.pak file now checked to make sure it's the right version before patching.

To-do:
- move MD5 calculation to occur while the installation process is happening. It's ok that it happens when changing pages, but it's slow so it should happen during the other "slow" procedures during install. Applies to lsao and homefront exe.
- (maybe) convert ripper to Pascal (Inno). Add additional checks.
- when uninstalling, check if Ripped folder is present and move ripped files back.
- (maybe) split mods from the Components page into its own custom page when more explanation can take place about what the mods are and how to use them (briefly). Also makes people less likely to not notice them during install.

Install/TS2-Redux-Installer.iss

@@ -1,5 +1,5 @@
 #define MyAppName "TS2 Redux"
-#define MyAppVersion "0.2.4"
+#define MyAppVersion "0.2.5"
 #define MyAppPublisher "Redux Tech Team"
 #define GitHubURL "https://github.com/HFTSRedux/TS2Redux"
 #define DiscordURL "https://discord.gg/fBnFZBYht5"
@@ -62,6 +62,8 @@ Name: "menu\optsave"; Description: "Enable Options Menu and Progress Save/Load";
 ; EXE + theme
 Name: "theme"; Description: "Game Executable Mods"; Flags:; Types: main extended
 Name: "theme\launcher"; Description: "Create TS2 Launcher"; Flags:;  Types:  main extended
+Name: "theme\shortcut1"; Description: "Add TS2 Shortcut to Start Menu"; Types:  main extended
+Name: "theme\shortcut2"; Description: "Add TS2 Shortcut to Desktop";
 Name: "theme\ripper"; Description: "Remove Homefront Game Files (saves 42.5GB)"; Flags: disablenouninstallwarning;
 ; UI
 Name: "ui"; Description: "User Interface Enhancements"; Flags:; Types: main extended
@@ -126,8 +128,11 @@ Type: files; Name: "{app}\Bin64\TimeSplitters2.exe"; Components: theme\launcher
 Type: files; Name: "{app}\gamehf2\ts2_neotokyo_fix.pak"; Components: fix\neopatch
 
 [Icons]
-Name: "{group}\TimeSplitters 2"; Filename: "{app}\Bin64\TimeSplitters2.exe"; WorkingDir: "{app}"; Flags: createonlyiffileexists;
-Name: "{group}\{cm:UninstallProgram,{#MyAppName}}"; Filename: "{uninstallexe}"
+Name: "{group}\TimeSplitters 2"; Filename: "{app}\Bin64\TimeSplitters2.exe"; WorkingDir: "{app}"; Components: theme\shortcut1;
+Name: "{group}\TimeSplitters Online Discord Server"; Filename: "{#DiscordURL}"; Components: theme\shortcut1;
+Name: "{group}\TS2 Redux GitHub Page"; Filename: "{#GitHubURL}"; Components: theme\shortcut1;
+Name: "{commondesktop}\TimeSplitters 2"; Filename: "{app}\Bin64\TimeSplitters2.exe"; WorkingDir: "{app}"; Flags: createonlyiffileexists; Components: theme\shortcut2;
+Name: "{group}\{cm:UninstallProgram,{#MyAppName}}"; Filename: "{uninstallexe}"; Components: theme\shortcut1;
 
 [Run]
 Filename: "{#DiscordURL}"; Description: "Join TimeSplitters Online Discord Server"; Flags: postinstall shellexec runasoriginaluser;
@@ -141,27 +146,49 @@ Filename: "{cmd}"; Parameters:"/c rd /s /q ""{app}\ripped"""; Description: "Dele
 
 [Code]
 const
-  MD5_Expected = '0326ea202fcd7ceb3760d14bc8d07f63';
+  MD5_HomefrontStock = '0326ea202fcd7ceb3760d14bc8d07f63';
+  MD5_LsaoStock = '8a92c275b504c96092d2398a169c0433';
 
 var
-  MD5_Calc: string;
+  MD5_HomefrontTarget: string;
+  MD5_LsaoTarget: string;
 
 function NextButtonClick(PageId: Integer): Boolean;
 begin
     Result := True;
+    
     if (PageId = wpSelectDir) then begin
         if not FileExists(ExpandConstant('{app}\Bin64\Homefront2_Release.exe')) then begin
           MsgBox('Warning: Could not find Homefront game EXE within the selected folder. Please check your install path and try again.', mbCriticalError, MB_OK);
           Result := False;
         end else begin
-          MD5_Calc := GetMD5OfFile(ExpandConstant('{app}\Bin64\Homefront2_Release.exe'));
-          if Result and (MD5_Calc <> MD5_Expected) then begin
-            if MsgBox('Warning: MD5 Check Failed! The game EXE you are using is different than what was expected. Proceed anyway?', mbConfirmation, MB_YESNO) = IDNO then begin
+          MD5_HomefrontTarget := GetMD5OfFile(ExpandConstant('{app}\Bin64\Homefront2_Release.exe'));
+          if Result and (MD5_HomefrontTarget <> MD5_HomefrontStock) then begin
+            if MsgBox('Warning: MD5 Check Failed! The game EXE you are using is different than what was expected. Proceed anyway? Generated checksum: ' + MD5_HomefrontTarget, mbConfirmation, MB_YESNO) = IDNO then begin
               Result := False;
             end;
           end;
         end;
     end;
+    
+    if (PageId = wpSelectComponents) then begin
+      if IsComponentSelected('fix\neopatch') then begin
+        if not FileExists(ExpandConstant('{app}\gamehf2\lsao_cached.pak')) then begin
+            MsgBox('Warning: Could not find file "lsao_cached.pak" within the given folder. This file contains important TS2 game files and is required in order to continue. Please check your install path and try again.', mbCriticalError, MB_OK);
+            Result := False;
+          end else begin
+            MsgBox('Setup needs to verify your TS2 game files. This may take a moment.', mbInformation, MB_OK);
+            MD5_LsaoTarget := GetMD5OfFile(ExpandConstant('{app}\gamehf2\lsao_cached.pak'));
+            if Result and (MD5_LsaoTarget <> MD5_LsaoStock) then begin
+              if MsgBox('Warning: MD5 Check Failed! The game data file "lsao_cached.pak" you are using is different than what was expected. Proceed anyway? Generated checksum: ' + MD5_LsaoTarget, mbConfirmation, MB_YESNO) = IDNO then begin
+                Result := False;
+              end;
+            end else begin
+              MsgBox('File verification complete. Game files are compatible and ready to be patched.', mbInformation, MB_OK);
+            end;
+        end;
+      end;
+    end;
 end;