FFBArcadePlugin/Game Files/GRIDReal.cpp

/*This file is part of FFB Arcade Plugin.
FFB Arcade Plugin is free software : you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
FFB Arcade Plugin is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FFB Arcade Plugin.If not, see < https://www.gnu.org/licenses/>.
*/

#include <string>
#include "GRIDReal.h"
#include "SDL.h"
#include <Xinput.h>

static EffectTriggers* myTriggers;
static EffectConstants* myConstants;
static Helpers* myHelpers;

extern int EnableDamper;
extern int DamperStrength;
extern int FFBOrRumble;

static bool init;

static int FFBCounter;

static int(__stdcall* Out32Ori)(DWORD device, DWORD data);
static int __stdcall Out32Hook(DWORD device, DWORD data)
{
	if (FFBOrRumble)
		return 0;

	if (device == 0x1020)
	{
		++FFBCounter;

		if (FFBCounter == 5)
		{
			FFBCounter = 0;

			if (data > 15)
			{
				double percentForce = (31 - data) / 15.0;
				double percentLength = 100;
				myTriggers->Rumble(percentForce, 0, percentLength);
				myTriggers->Constant(myConstants->DIRECTION_FROM_LEFT, percentForce);
			}
			else if (data > 0)
			{
				double percentForce = (16 - data) / 15.0;
				double percentLength = 100;
				myTriggers->Rumble(0, percentForce, percentLength);
				myTriggers->Constant(myConstants->DIRECTION_FROM_RIGHT, percentForce);
			}
		}
	}

	return 0;
}

static int(__fastcall* EnableFFBOri)(int a1, double a2);
static int __fastcall EnableFFBHook(int a1, double a2)
{
	EnableFFBOri(a1, a2);
	
	*(BYTE*)(a1 + 92) = 1; // FFB

	if (FFBOrRumble)
		*(BYTE*)(a1 + 12) = 1; // Rumble

	return 0;
}

static DWORD WINAPI XInputSetStateGRID(DWORD dwUserIndex, XINPUT_VIBRATION* pVibration)
{
	myTriggers->Rumble(pVibration->wLeftMotorSpeed / 65535.0, pVibration->wRightMotorSpeed / 65535.0, 100.0);

	return ERROR_SUCCESS;
}

void GRIDReal::FFBLoop(EffectConstants* constants, Helpers* helpers, EffectTriggers* triggers) {
	if (!init)
	{
		init = true;

		DWORD ImageBase = (DWORD)GetModuleHandleA(0);

		MH_Initialize();
		MH_CreateHook((void*)(ImageBase + 0x79CDE0), EnableFFBHook, (void**)&EnableFFBOri);
		MH_CreateHookApi(L"inpout32.dll", "Out32", Out32Hook, (void**)&Out32Ori);
		if (FFBOrRumble)
			MH_CreateHookApi(L"xinput1_3.dll", "XInputSetState", &XInputSetStateGRID, NULL);
		MH_EnableHook(MH_ALL_HOOKS);
	}

	myTriggers = triggers;
	myConstants = constants;
	myHelpers = helpers;
}