From de2ef7eaef1a53f4b0b45ded264be7f130fad6c6 Mon Sep 17 00:00:00 2001
From: Federico Cecchetto <fedecek3@gmail.com>
Date: Wed, 5 Jan 2022 17:11:40 +0100
Subject: [PATCH] Add bindings module

---
 src/client/component/binding.cpp | 130 +++++++++++++++++++++++++++++++
 src/client/game/symbols.hpp      |  14 +++-
 2 files changed, 143 insertions(+), 1 deletion(-)
 create mode 100644 src/client/component/binding.cpp

diff --git a/src/client/component/binding.cpp b/src/client/component/binding.cpp
new file mode 100644
index 00000000..36f9e06c
--- /dev/null
+++ b/src/client/component/binding.cpp
@@ -0,0 +1,130 @@
+#include <std_include.hpp>
+#include "loader/component_loader.hpp"
+#include "game/game.hpp"
+
+#include <utils/hook.hpp>
+#include <utils/string.hpp>
+
+namespace binding
+{
+	namespace
+	{
+		std::vector<std::string> custom_binds = {};
+
+		utils::hook::detour cl_execute_key_hook;
+		utils::hook::detour key_write_bindings_to_buffer_hook;
+
+		int key_write_bindings_to_buffer_stub(int /*localClientNum*/, char* buffer, const int buffer_size)
+		{
+			auto bytes_used = 0;
+			const auto buffer_size_align = static_cast<std::int32_t>(buffer_size) - 4;
+
+			for (auto key_index = 0; key_index < 256; ++key_index)
+			{
+				const auto* const key_button = game::Key_KeynumToString(key_index, 0, 1);
+				auto value = game::playerKeys->keys[key_index].binding;
+
+				if (value && value < 100)
+				{
+					const auto len = sprintf_s(&buffer[bytes_used], (buffer_size_align - bytes_used),
+					                           "bind %s \"%s\"\n", key_button, game::command_whitelist[value]);
+
+					if (len < 0)
+					{
+						return bytes_used;
+					}
+
+					bytes_used += len;
+				}
+				else if (value >= 100)
+				{
+					value -= 100;
+					if (static_cast<size_t>(value) < custom_binds.size() && !custom_binds[value].empty())
+					{
+						const auto len = sprintf_s(&buffer[bytes_used], (buffer_size_align - bytes_used),
+						                           "bind %s \"%s\"\n", key_button, custom_binds[value].data());
+
+						if (len < 0)
+						{
+							return bytes_used;
+						}
+
+						bytes_used += len;
+					}
+				}
+			}
+
+			buffer[bytes_used] = 0;
+			return bytes_used;
+		}
+
+		int get_binding_for_custom_command(const char* command)
+		{
+			auto index = 0;
+			for (auto& bind : custom_binds)
+			{
+				if (bind == command)
+				{
+					return index;
+				}
+
+				index++;
+			}
+
+			custom_binds.emplace_back(command);
+			index = static_cast<unsigned int>(custom_binds.size()) - 1;
+
+			return index;
+		}
+
+		int key_get_binding_for_cmd_stub(const char* command)
+		{
+			// original binds
+			for (auto i = 0; i <= 100; i++)
+			{
+				if (game::command_whitelist[i] && !strcmp(command, game::command_whitelist[i]))
+				{
+					return i;
+				}
+			}
+
+			// custom binds
+			return 100 + get_binding_for_custom_command(command);
+		}
+
+		void cl_execute_key_stub(const int local_client_num, int key, const int down, const unsigned int time)
+		{
+			if (key >= 100)
+			{
+				key -= 100;
+
+				if (static_cast<size_t>(key) < custom_binds.size() && !custom_binds[key].empty())
+				{
+					game::Cbuf_AddText(local_client_num, utils::string::va("%s\n", custom_binds[key].data()));
+				}
+
+				return;
+			}
+
+			cl_execute_key_hook.invoke<void>(local_client_num, key, down, time);
+		}
+	}
+
+	class component final : public component_interface
+	{
+	public:
+		void post_unpack() override
+		{
+			// write all bindings to config file
+			key_write_bindings_to_buffer_hook.create(0x3D3840_b, key_write_bindings_to_buffer_stub);
+
+			// links a custom command to an index
+			utils::hook::jump(0x59AE30_b, key_get_binding_for_cmd_stub, true);
+
+			// execute custom binds
+			cl_execute_key_hook.create(0x3CF1E0_b, &cl_execute_key_stub);
+		}
+	};
+}
+
+REGISTER_COMPONENT(binding::component)
diff --git a/src/client/game/symbols.hpp b/src/client/game/symbols.hpp
index 48c6eac3..f02a47b1 100644
--- a/src/client/game/symbols.hpp
+++ b/src/client/game/symbols.hpp
@@ -72,17 +72,25 @@ namespace game
 		G_GivePlayerWeapon{0x51B660};
 	WEAK symbol<void(void* ps, const unsigned int weapon, int hadWeapon)> G_InitializeAmmo{0x4C4110};
 	WEAK symbol<void(int clientNum, const unsigned int weapon)> G_SelectWeapon{0x51C0D0};
+	WEAK symbol<bool(int localClientNum, ScreenPlacement* screenPlacement, const float* worldDir, float* outScreenPos)> WorldPosToScreenPos{0x36F310};
+
+	WEAK symbol<void(int* hitNum, const float* start, const float* end, int passEntityNum, 
+		int passEntityNum1, int contentmask)> G_SightTrace{0x4CBCA0};
 
 	WEAK symbol<char*(char* string)> I_CleanStr{0x620660};
 
 	WEAK symbol<char* (GfxImage* image, uint32_t width, uint32_t height, uint32_t depth, uint32_t mipCount, 
 		uint32_t imageFlags, DXGI_FORMAT imageFormat, int a8, const char* name, const void* initData)> Image_Setup{0x74B2A0};
 
+	WEAK symbol<const char* (int, int, int)> Key_KeynumToString{0x3D32D0};
+
 	WEAK symbol<void(int clientNum, const char* menu, int a3, int a4, unsigned int a5)> LUI_OpenMenu{0x5F0EE0};
 	WEAK symbol<bool(int clientNum, const char* menu)> Menu_IsMenuOpenAndVisible{0x5EE1A0};
 
 	WEAK symbol<Material*(const char* material)> Material_RegisterHandle{0x759BA0};
 
+	WEAK symbol<void(pathnode_t*, float* out)> PathNode_WorldifyPosFromParent{0x525830};
+
 	WEAK symbol<const float* (const float* v)> Scr_AllocVector{0x5C3220};
 	WEAK symbol<void()> Scr_ClearOutParams{0x5C6E50};
 	WEAK symbol<scr_entref_t(unsigned int entId)> Scr_GetEntityIdRef{0x5C56C0};
@@ -112,7 +120,8 @@ namespace game
 	WEAK symbol<void(const void* obj, void* pose, unsigned int entnum, unsigned int renderFxFlags, float* lightingOrigin, 
 		float materialTime, __int64 a7, __int64 a8)> R_AddDObjToScene{0x775C40};
 
-	WEAK symbol<ScreenPlacement* ()> ScrPlace_GetViewPlacement{0x3E16A0};
+	WEAK symbol<ScreenPlacement*()> ScrPlace_GetViewPlacement{0x3E16A0};
+	WEAK symbol<ScreenPlacement*()> ScrPlace_GetView{0x3E1660};
 
 	WEAK symbol<const char*(scr_string_t stringValue)> SL_ConvertToString{0x5BFBB0};
 	WEAK symbol<scr_string_t(const char* str, unsigned int user)> SL_GetString{0x5C0170};
@@ -138,6 +147,7 @@ namespace game
 
 	WEAK symbol<cmd_function_s*> cmd_functions{0xAD17BB8};
 	WEAK symbol<CmdArgs> cmd_args{0xAD17A60};
+	WEAK symbol<const char*> command_whitelist{0xBF84E0};
 
 	WEAK symbol<HWND> hWnd{0xCCF81C0};
 
@@ -145,10 +155,12 @@ namespace game
 	WEAK symbol<int> g_poolSize{0xBF2E40};
 
 	WEAK symbol<gentity_s> g_entities{0x52DDDA0};
+	WEAK symbol<PathData> pathData{0x52CCDA0};
 
 	WEAK symbol<DWORD> threadIds{0xB11DC80};
 
 	WEAK symbol<GfxDrawMethod_s> gfxDrawMethod{0xEDF9E00};
+	WEAK symbol<refdef_t> refdef{0x1BC2500};
 
 	WEAK symbol<int> keyCatchers{0x203F3C0};