Allow bot_add to be used without nav meshes

AMBuilder

@@ -80,6 +80,7 @@ for sdk_target in MMSPlugin.sdk_targets:
     os.path.join(builder.sourcePath, 'src', 'utils', 'detours.cpp'),
     os.path.join(builder.sourcePath, 'src', 'utils', 'schema.cpp'),
     os.path.join(builder.sourcePath, 'src', 'utils', 'simplecmds.cpp'),
+    os.path.join(builder.sourcePath, 'src', 'utils', 'mempatch.cpp'),
 
     os.path.join(builder.sourcePath, 'src', 'movement', 'mv_hooks.cpp'),
     os.path.join(builder.sourcePath, 'src', 'movement', 'mv_manager.cpp'),

src/utils/addresses.h

@@ -99,7 +99,9 @@ namespace sigs
 	// Find handler for setang console command
 	DECLARE_SIG(SnapViewAngles, "\x48\x89\x5C\x24\x20\x55\x56\x57\x41\x56\x41\x57\x48\x8D\x6C\x24\xC9\x48\x81\xEC\xD0\x00\x00\x00\xBF\xFF\xFF\xFF\xFF");
 
-
+	// bot_add
+	DECLARE_SIG(CreateBotPatch, "\x0F\x84\x2A\x2A\x2A\x2A\x80\xB8\x08\x01\x00\x00\x00\x0F\x84\x2A\x2A\x2A\x2A\x80\x3D\x2A\x2A\x2A\x2A\x00\x74");
+
 	/* Trace related stuff */
 
 	// TODO

src/utils/mempatch.cpp

@@ -0,0 +1,41 @@
+#include "mempatch.h"
+#include "plat.h"
+
+#include "tier0/memdbgon.h"
+
+MemPatch::MemPatch(Signature sig, CModule *module, u32 patchLength) : sig(sig), module(module), patchLength(patchLength)
+{
+	if (!this->address)
+	{
+		this->address = (void*)this->module->FindSignature((const byte *)this->sig.data, this->sig.length); 
+		if (!this->address) 
+		{
+			return;
+		}
+	}
+	this->oldBytes = new byte[this->patchLength];
+	V_memcpy(this->oldBytes, this->address, this->patchLength);
+}
+
+bool MemPatch::Patch()
+{
+	if (!this->address)
+	{
+		return false;
+	}
+
+	byte *patchBytes = new byte[this->patchLength];
+	for (u32 i = 0; i < this->patchLength; i++)
+	{
+		patchBytes[i] = 0x90;
+	}
+	Plat_WriteMemory(this->address, patchBytes, this->patchLength);
+	delete patchBytes;
+	return true;
+}
+
+
+void MemPatch::Unpatch()
+{
+	Plat_WriteMemory(this->address, this->oldBytes, this->patchLength);
+}

src/utils/mempatch.h

@@ -0,0 +1,18 @@
+#include "common.h"
+#include "module.h"
+#include "addresses.h"
+
+class MemPatch
+{
+public:
+	MemPatch(Signature sig, CModule *module, u32 patchLength);
+
+	bool Patch();
+	void Unpatch();
+private:
+	Signature sig;
+	u32 patchLength;
+	CModule *module;
+	void *address{};
+	byte *oldBytes{};
+};

src/utils/utils.cpp

@@ -12,6 +12,7 @@
 #include "module.h"
 #include "detours.h"
 #include "virtual.h"
+#include "mempatch.h"
 
 #include "tier0/memdbgon.h"
 
@@ -27,7 +28,7 @@ SnapViewAngles_t *utils::SnapViewAngles = NULL;
 EmitSoundFunc_t *utils::EmitSound = NULL;
 TracePlayerBBox_t *utils::TracePlayerBBox = NULL;
 FindEntityByClassname_t *FindEntityByClassnameFunc = NULL;
-
+MemPatch *botAddPatch = NULL;
 
 void modules::Initialize()
 {
@@ -79,12 +80,15 @@ bool utils::Initialize(ISmmAPI *ismm, char *error, size_t maxlen)
 	RESOLVE_SIG(modules::server, sigs::EmitSound, utils::EmitSound);
 	RESOLVE_SIG(modules::server, sigs::FindEntityByClassname, FindEntityByClassnameFunc);
 
+	botAddPatch = new MemPatch(sigs::CreateBotPatch, modules::server, 19);
+	botAddPatch->Patch(); 
 	InitDetours();
 	return true;
 }
 
 void utils::Cleanup()
 {
+	botAddPatch->Unpatch();
 	FlushAllDetours();
 }