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-rw-r--r--NorthstarDLL/server/alltalk.cpp28
1 files changed, 28 insertions, 0 deletions
diff --git a/NorthstarDLL/server/alltalk.cpp b/NorthstarDLL/server/alltalk.cpp
new file mode 100644
index 00000000..6283a1a2
--- /dev/null
+++ b/NorthstarDLL/server/alltalk.cpp
@@ -0,0 +1,28 @@
+#include "core/convar/convar.h"
+#include "engine/r2engine.h"
+
+size_t __fastcall ShouldAllowAlltalk()
+{
+ // this needs to return a 64 bit integer where 0 = true and 1 = false
+ static ConVar* Cvar_sv_alltalk = R2::g_pCVar->FindVar("sv_alltalk");
+ if (Cvar_sv_alltalk->GetBool())
+ return 0;
+
+ // lobby should default to alltalk, otherwise don't allow it
+ return strcmp(R2::g_pGlobals->m_pMapName, "mp_lobby");
+}
+
+ON_DLL_LOAD_RELIESON("engine.dll", ServerAllTalk, ConVar, (CModule module))
+{
+ // replace strcmp function called in CClient::ProcessVoiceData with our own code that calls ShouldAllowAllTalk
+ MemoryAddress base = module.Offset(0x1085FA);
+
+ base.Patch("48 B8"); // mov rax, 64 bit int
+ // (uint8_t*)&ShouldAllowAlltalk doesn't work for some reason? need to make it a uint64 first
+ uint64_t pShouldAllowAllTalk = reinterpret_cast<uint64_t>(ShouldAllowAlltalk);
+ base.Offset(0x2).Patch((uint8_t*)&pShouldAllowAllTalk, 8);
+ base.Offset(0xA).Patch("FF D0"); // call rax
+
+ // nop until compare (test eax, eax)
+ base.Offset(0xC).NOP(0x7);
+}