Merge pull request #148 from diamante0018/feature/elevators

[Feature] Add options to disable elevators

src/Components/Loader.cpp

@@ -105,6 +105,7 @@ namespace Components
 		Loader::Register(new Chat());
 		Loader::Register(new TextRenderer());
 		Loader::Register(new Movement());
+		Loader::Register(new Elevators());
 
 		Loader::Register(new Client());
 

src/Components/Loader.hpp

@@ -133,6 +133,7 @@ namespace Components
 #include "Modules/Chat.hpp"
 #include "Modules/TextRenderer.hpp"
 #include "Modules/Movement.hpp"
+#include "Modules/Elevators.hpp"
 
 #include "Modules/Gamepad.hpp"
 #include "Modules/Client.hpp"

src/Components/Modules/Elevators.cpp

@@ -0,0 +1,55 @@
+#include "STDInclude.hpp"
+
+namespace Components
+{
+	Game::dvar_t* Elevators::SV_DisableElevators;
+
+	__declspec(naked) void Elevators::PM_GroundTraceStub()
+	{
+		__asm
+		{
+			push eax
+			mov eax, Elevators::SV_DisableElevators
+			cmp byte ptr [eax + 16], 1
+			pop eax
+
+			// Always skip PM_CorrectAllSolid if SV_DisableElevators is set to 1
+			je noElevators
+
+			// Original code
+			cmp byte ptr [esp + 0x50], 0
+			rep movsd
+			mov esi, [esp + 0x58]
+
+			// Original code flow
+			push 0x573694 
+			retn
+
+		noElevators:
+
+			// Original code
+			rep movsd
+			mov esi, [esp + 0x58]
+
+			// Jump over call to PM_CorrectAllSolid
+			push 0x5736AE
+			retn
+		}
+	}
+
+	Elevators::Elevators()
+	{
+		Dvar::OnInit([]
+		{
+			Elevators::SV_DisableElevators = Game::Dvar_RegisterBool("sv_disableElevators",
+				false, Game::DVAR_FLAG_REPLICATED, "Disable elevators");
+		});
+
+		// Hook PM_GroundTrace so me way skip PM_CorrectAllSolid (disable elevators)
+		Utils::Hook(0x573689, Elevators::PM_GroundTraceStub, HOOK_JUMP).install()->quick();
+	}
+
+	Elevators::~Elevators()
+	{
+	}
+}

src/Components/Modules/Elevators.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+namespace Components
+{
+	class Elevators : public Component
+	{
+	public:
+		Elevators();
+		~Elevators();
+
+	private:
+		static Game::dvar_t* SV_DisableElevators;
+
+		static void PM_GroundTraceStub();
+	};
+}