Function GetCollidedObjects

TombEngine/Game/collision/collide_item.cpp:92–221

}

CollidedObjectData GetCollidedObjects(ItemInfo& collidingItem, bool onlyVisible, bool ignorePlayer, float customRadius, ObjectCollectionMode mode)
{
	constexpr auto ROUGH_BOX_HEIGHT_MIN = BLOCK(1 / 8.0f);

	auto collObjects = CollidedObjectData{};

	int itemCount	= 0;
	int staticCount = 0;

	// Establish parameters of colliding item.
	const auto& collidingBounds = GetClosestKeyframe(collidingItem).BoundingBox;

	// Quickly discard collision if colliding item bounds are below tolerance threshold.
	if (!customRadius && collidingBounds.GetExtents().Length() <= COLLIDABLE_BOUNDS_THRESHOLD)
		return collObjects;

	// Convert bounding box to DX bounds.
	auto convertedBounds = collidingBounds.ToBoundingOrientedBox(collidingItem.Pose);

	// Create conservative AABB for rough tests.
	auto collidingAabb = collidingBounds.ToConservativeBoundingBox(collidingItem.Pose);

	// Override extents if specified.
	if (customRadius > 0.0f)
	{
		collidingAabb = BoundingBox(collidingItem.Pose.Position.ToVector3(), Vector3(customRadius));
		convertedBounds.Extents = Vector3(customRadius);
	}

	// Run through neighboring rooms.
	const auto& room = g_Level.Rooms[collidingItem.RoomNumber];
	for (int roomNumber : room.NeighborRoomNumbers)
	{
		auto& neighborRoom = g_Level.Rooms[roomNumber];
		if (!neighborRoom.Active())
			continue;

		// Collect items.
		if (mode == ObjectCollectionMode::All ||
			mode == ObjectCollectionMode::Items)
		{
			int itemNumber = neighborRoom.itemNumber;
			if (itemNumber != NO_VALUE)
			{
				do
				{
					auto& item = g_Level.Items[itemNumber];
					const auto& object = Objects[item.ObjectNumber];

					itemNumber = item.NextItem;

					// Ignore player (if applicable).
					if (ignorePlayer && item.IsLara())
						continue;

					// Ignore invisible item (if applicable).
					if (onlyVisible && item.Status == ITEM_INVISIBLE)
						continue;