tweak(extra-natives/five): implement [GET/SET]_VEHICLE_XMAS_SNOW_FACTOR

citizenfx · Dec 14, 2024 · 181a3c2 · 181a3c2
1 parent 1baa5c8
commit 181a3c2
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Showing 3 changed files with 47 additions and 0 deletions.
diff --git a/code/components/extra-natives-five/src/VehicleExtraNatives.cpp b/code/components/extra-natives-five/src/VehicleExtraNatives.cpp
@@ -242,6 +242,7 @@ static void writeVehicleMemory(fx::ScriptContext& context, std::string_view nn)
 }
 
 static float* PassengerMassPtr;
+static float* SnowGripFactor;
 
 static int StreamRenderGfxPtrOffset;
 static int HandlingDataPtrOffset;
@@ -775,6 +776,12 @@ static HookFunction initFunction([]()
 		PassengerMassPtr = hook::get_address<float*>(location);
 	}
 
+	{
+		SnowGripFactor = (float*)hook::AllocateStubMemory(4);
+		static uint8_t* location = hook::get_pattern<uint8_t>("F3 0F 5C C8 48 3B C8", 4);
+		hook::put<int32_t>(location, (intptr_t)SnowGripFactor - (intptr_t)location - 4);
+	}
+
 	{
 		std::initializer_list<PatternPair> list = {
 			{ "44 38 ? ? ? ? 02 74 ? F3 0F 10 1D", 13 },
@@ -1581,6 +1588,22 @@ static HookFunction initFunction([]()
 		context.SetResult<float>(*PassengerMassPtr);
 	});
 
+	fx::ScriptEngine::RegisterNativeHandler("SET_VEHICLE_XMAS_SNOW_FACTOR", [](fx::ScriptContext& context)
+	{
+		float gripFactor = context.GetArgument<float>(0);
+
+		if (gripFactor < 0.0)
+		{
+			gripFactor = 0.0;
+		}
+		*SnowGripFactor = gripFactor;
+	});
+
+	fx::ScriptEngine::RegisterNativeHandler("GET_VEHICLE_XMAS_SNOW_FACTOR", [](fx::ScriptContext& context)
+	{
+		context.SetResult<float>(*SnowGripFactor);
+	});
+
 	static struct : jitasm::Frontend
 	{
 		static bool ShouldSkipRepairFunc(fwEntity* VehPointer)
@@ -1660,6 +1683,7 @@ static HookFunction initFunction([]()
 		g_globalFuelConsumptionMultiplier = 1.f;
 
 		*PassengerMassPtr = 0.05f;
+		*SnowGripFactor = 0.2f;
 	});
 
 	fx::ScriptEngine::RegisterNativeHandler("SET_VEHICLE_AUTO_REPAIR_DISABLED", [](fx::ScriptContext& context)

diff --git a/ext/native-decls/GetVehicleXmasSnowFactor.md b/ext/native-decls/GetVehicleXmasSnowFactor.md
@@ -0,0 +1,12 @@
+---
+ns: CFX
+apiset: client
+game: gta5
+---
+## GET_VEHICLE_XMAS_SNOW_FACTOR
+```c
+float GET_VEHICLE_XMAS_SNOW_FACTOR();
+```
+A getter for [SET_VEHICLE_XMAS_SNOW_FACTOR](#_80cc4c9e).
+## Return value
+Returns the grip factor for the vehicles wheels during xmas weather. default value is 0.2.
diff --git a/ext/native-decls/SetVehicleXmasSnowFactor.md b/ext/native-decls/SetVehicleXmasSnowFactor.md
@@ -0,0 +1,11 @@
+---
+ns: CFX
+apiset: client
+game: gta5
+---
+## SET_VEHICLE_XMAS_SNOW_FACTOR
+```c
+void SET_VEHICLE_XMAS_SNOW_FACTOR(float gripFactor);
+```
+## Parameters
+* **gripFactor**: amount of grip strength vehicle wheels have when xmas weather is active, 1.0 being normal weather grip. 0.2 is the default.