Rework `-vanilla` to be a vanilla compatibility mode (#601)

Old `-vanilla` behaviour is now handled by `-nonorthstardll`.

New squirrel constant called `VANILLA`. Set to true when in vanilla compatibility mode.

Differences when in vanilla compatibility mode:
- Doesn't restrict server commands (same as `-norestrictservercommands`)
- Doesn't block FairFight screenshot functions 
- Doesn't do Atlas-related stuff (except for mainmenupromos)

1 files changed, 8 insertions, 0 deletions

diff --git a/NorthstarDLL/shared/exploit_fixes/exploitfixes.cpp b/NorthstarDLL/shared/exploit_fixes/exploitfixes.cpp
index 2a0a9c2c..8821a40d 100644
--- a/NorthstarDLL/shared/exploit_fixes/exploitfixes.cpp
+++ b/NorthstarDLL/shared/exploit_fixes/exploitfixes.cpp
@@ -5,6 +5,7 @@
 #include "engine/r2engine.h"
 #include "client/r2client.h"
 #include "core/math/vector.h"
+#include "core/vanilla.h"
 
 AUTOHOOK_INIT()
 
@@ -33,6 +34,8 @@ AUTOHOOK(CLC_Screenshot_WriteToBuffer, engine.dll + 0x22AF20,
 bool, __fastcall, (void* thisptr, void* buffer)) // 48 89 5C 24 ? 57 48 83 EC 20 8B 42 10
 // clang-format on
 {
+	if (g_pVanillaCompatibility->GetVanillaCompatibility())
+		return CLC_Screenshot_WriteToBuffer(thisptr, buffer);
 	return false;
 }
 
@@ -41,6 +44,8 @@ AUTOHOOK(CLC_Screenshot_ReadFromBuffer, engine.dll + 0x221F00,
 bool, __fastcall, (void* thisptr, void* buffer)) // 48 89 5C 24 ? 48 89 6C 24 ? 48 89 74 24 ? 57 48 83 EC 20 48 8B DA 48 8B 52 38
 // clang-format on
 {
+	if (g_pVanillaCompatibility->GetVanillaCompatibility())
+		return CLC_Screenshot_ReadFromBuffer(thisptr, buffer);
 	return false;
 }
 
@@ -261,6 +266,9 @@ bool, __fastcall, (const char* pModName)) // 48 83 EC 28 48 8B 0D ? ? ? ? 48 8D
 	R2::g_pModName = new char[iSize + 1];
 	strcpy(R2::g_pModName, pModName);
 
+	if (g_pVanillaCompatibility->GetVanillaCompatibility())
+		return false;
+
 	return (!strcmp("r2", pModName) || !strcmp("r1", pModName)) && !Tier0::CommandLine()->CheckParm("-norestrictservercommands");
 }