Function KeyHoleCollision

TombEngine/Objects/Generic/puzzles_keys.cpp:471–572

// Keys

void KeyHoleCollision(short itemNumber, ItemInfo* laraItem, CollisionInfo* coll)
{
	auto* keyHoleItem = &g_Level.Items[itemNumber];
	auto* player = GetLaraInfo(laraItem);

	short* triggerIndexPtr = GetTriggerIndex(keyHoleItem);

	if (triggerIndexPtr == nullptr)
		return;

	short triggerType = (*(triggerIndexPtr++) >> 8) & TRIGGER_BITS;

	auto interactionMode = (triggerType == TRIGGER_TYPES::SWITCH) ? InteractionMode::Always : InteractionMode::Activation;
	g_Hud.InteractionHighlighter.Test(*laraItem, *keyHoleItem, interactionMode);

	bool isUnderwater = (player->Control.WaterStatus == WaterStatus::Underwater);
	const auto& activeBounds = isUnderwater ? WaterKeyHoleBounds : KeyHoleBounds;
	const auto& pos = isUnderwater ? WaterKeyHolePosition : KeyHolePosition;

	// HACK: Check player state and anim number.
	bool isPlayerAvailable = isUnderwater ?
		(laraItem->Animation.ActiveState == LS_UNDERWATER_IDLE && laraItem->Animation.AnimNumber == LA_UNDERWATER_IDLE) :
		(laraItem->Animation.ActiveState == LS_IDLE && laraItem->Animation.AnimNumber == LA_STAND_IDLE);

	if ((player->Control.IsMoving && player->Context.InteractedItem == itemNumber) ||
		((IsHeld(In::Action) || g_Gui.GetInventoryItemChosen() != NO_VALUE) &&
			(player->Control.Look.OpticRange == 0 && isPlayerAvailable)))
	{
		if (TestLaraPosition(activeBounds, keyHoleItem, laraItem))
		{
			if (!player->Control.IsMoving)
			{
				if (keyHoleItem->Status != ITEM_NOT_ACTIVE && triggerType != TRIGGER_TYPES::SWITCH)
					return;

				if (g_Gui.GetInventoryItemChosen() == NO_VALUE)
				{
					if (g_Gui.IsObjectInInventory(keyHoleItem->ObjectNumber - (ID_KEY_HOLE1 - ID_KEY_ITEM1)))
						g_Gui.SetEnterInventory(keyHoleItem->ObjectNumber - (ID_KEY_HOLE1 - ID_KEY_ITEM1));
					else if (IsClicked(In::Action))
						SayNo();

					return;
				}

				if (g_Gui.GetInventoryItemChosen() != keyHoleItem->ObjectNumber - (ID_KEY_HOLE1 - ID_KEY_ITEM1))
					return;

				player->Context.InteractedItem = itemNumber;
			}

			if (player->Context.InteractedItem != itemNumber)
				return;

			if (MoveLaraPosition(pos, keyHoleItem, laraItem))
			{
				if (triggerType = TRIGGER_TYPES::SWITCH)
					keyHoleItem->ItemFlags[1] = true;