Function IsTargetOccludedByObjects

TombEngine/Game/Lara/lara_fire.cpp:923–974

}

bool IsTargetOccludedByObjects(ItemInfo& playerItem, Vector3 origin, Vector3 target, float distance)
{
	constexpr auto playerSize = LARA_RADIUS * 2.0f;

	if (!g_GameFlow->GetSettings()->Gameplay.TargetObjectOcclusion)
		return false;

	auto dir = target - origin;
	dir.Normalize();

	// We need to subtract Lara's radius from distance to avoid near plane false negatives.
	distance -= playerSize;

	// Get raw LOS data.
	auto los = GetLosCollision(origin, playerItem.RoomNumber, dir, distance, true, true, true);
	
	// Assess static mesh line of sight.
	if (!los.Statics.empty() && los.Statics.front().Distance < distance)
	{
		auto& staticLos = los.Statics.front();

		// Don't filter out shatterables.
		if (Statics[staticLos.Static->Slot].shatterType == ShatterType::None)
		{
			// Filter out statics that are too small.
			auto extents = staticLos.Static->GetCollisionAabb().GetExtents();
			auto radius = Vector2(extents.x, extents.z).Length();

			if (radius > playerSize && extents.y > playerSize)
				return true;
		}
	}

	// Assess moveable line of sight.
	if (!los.Items.empty() && los.Items.front().Distance < distance)
	{
		auto& moveableLos = los.Items.front();

		// Don't filter out creatures.
		if (!Objects[moveableLos.Item->ObjectNumber].intelligent)
		{
			// Filter out moveables that are too small.
			auto extents = moveableLos.Item->GetAabb().Extents;
			auto radius = Vector2(extents.x, extents.z).Length();

			if (radius > playerSize && extents.y > playerSize)
				return true;
		}
	}

	return false;
}

void FindNewTarget(ItemInfo& laraItem, const WeaponInfo& weaponInfo)
{