Function BigGunControl

TombEngine/Objects/TR3/Vehicles/big_gun.cpp:180–332

	}

	bool BigGunControl(ItemInfo* laraItem, CollisionInfo* coll)
	{
		auto* lara = GetLaraInfo(laraItem);
		auto* bigGunItem = &g_Level.Items[lara->Context.Vehicle];
		auto* bigGun = GetBigGunInfo(bigGunItem);

		if (bigGun->Flags & BGUN_FLAG_UP_DOWN)
		{
			if (bigGun->IsBarrelRotating)
				bigGun->BarrelRotation--;

			if (!bigGun->BarrelRotation)
				bigGun->IsBarrelRotating = false;

			if (IsHeld(In::Brake) || laraItem->HitPoints <= 0)
				bigGun->Flags = BGUN_FLAG_AUTO_ROT;
			else
			{
				if ((IsHeld(In::Accelerate) || IsHeld(In::Fire)) && !bigGun->FireCount)
				{
					BigGunFire(bigGunItem, laraItem);
					bigGun->FireCount = BGUN_RECOIL_TIME;
					bigGun->BarrelRotation = BGUN_RECOIL_Z;
					bigGun->IsBarrelRotating = true;
				}

				if (IsHeld(In::Forward))
				{
					if (bigGun->TurnRate.x < 0)
						bigGun->TurnRate.x /= 2;

					bigGun->TurnRate.x += BGUN_TURN_RATE_ACCEL;
					if (bigGun->TurnRate.x > (BGUN_TURN_RATE_MAX / 2))
						bigGun->TurnRate.x = (BGUN_TURN_RATE_MAX / 2);
				}
				else if (IsHeld(In::Back))
				{
					if (bigGun->TurnRate.x > 0)
						bigGun->TurnRate.x /= 2;

					bigGun->TurnRate.x -= BGUN_TURN_RATE_ACCEL;
					if (bigGun->TurnRate.x < (-BGUN_TURN_RATE_MAX / 2))
						bigGun->TurnRate.x = (-BGUN_TURN_RATE_MAX / 2);
				}
				else
				{
					bigGun->TurnRate.x -= bigGun->TurnRate.x / 3;
					if (abs(bigGun->TurnRate.x) < BGUN_TURN_RATE_ACCEL)
						bigGun->TurnRate.x = 0;
				}

				if (IsHeld(In::Left))
				{
					if (bigGun->TurnRate.y > 0)
						bigGun->TurnRate.y /= 2;

					bigGun->TurnRate.y -= BGUN_TURN_RATE_ACCEL;
					if (bigGun->TurnRate.y < -BGUN_TURN_RATE_MAX)