Function DoObjectCollision

TombEngine/Game/collision/collide_item.cpp:1812–1988

}

void DoObjectCollision(ItemInfo* item, CollisionInfo* coll)
{
	item->HitStatus = false;
	coll->HitStatic = false;

	bool isPlayer = item->IsLara();
	bool isHarmless = !isPlayer && (item->Data.is<KayakInfo>() || item->Data.is<UPVInfo>());

	if (isPlayer)
	{
		GetLaraInfo(*item).HitDirection = NO_VALUE;

		if (item->HitPoints <= 0)
			return;
	}

	if (Objects[item->ObjectNumber].intelligent)
		return;

	const auto& room = g_Level.Rooms[item->RoomNumber];
	for (int neighborRoomNumber : room.NeighborRoomNumbers)
	{
		auto& neighborRoom = g_Level.Rooms[neighborRoomNumber];
		if (!neighborRoom.Active())
			continue;

		int nextItemNumber = neighborRoom.itemNumber;
		while (nextItemNumber != NO_VALUE)
		{
			auto& linkItem = g_Level.Items[nextItemNumber];
			int itemNumber = nextItemNumber;

			// HACK: For some reason, sometimes an infinite loop may happen here.
			if (nextItemNumber == linkItem.NextItem)
				break;

			nextItemNumber = linkItem.NextItem;

			if (&linkItem == item)
				continue;

			if (!(linkItem.Collidable && linkItem.Status != ITEM_INVISIBLE))
				continue;

			const auto& object = Objects[linkItem.ObjectNumber];

			if (object.collision == nullptr)
				continue;

			if (Vector3i::Distance(linkItem.Pose.Position, item->Pose.Position) >= COLLISION_CHECK_DISTANCE)
				continue;

			if (isPlayer)
			{
				// Ignore all non-intelligent objects, if player is on a vehicle. This way we avoid
				// any collision routine calls for any interactable objects, as in original, but fix
				// the issue with enemies not hurting Lara on a vehicle via hand combat.
				if (GetLaraInfo(*item).Context.Vehicle != NO_VALUE && !object.intelligent)