Function GuideControl

TombEngine/Objects/TR4/Entity/tr4_guide.cpp:106–830

	}

	void GuideControl(short itemNumber)
	{
		if (!CreatureActive(itemNumber))
			return;

		auto* item = &g_Level.Items[itemNumber];
		auto* creature = GetCreatureInfo(item);
		auto* object = &Objects[item->ObjectNumber];

		short angle = 0;
		short tilt = 0;
		short joint0 = 0;
		short joint1 = 0;
		short joint2 = 0;

		// Ignite torch.
		if (item->ItemFlags[1] == 2)
		{
			auto pos = GetJointPosition(item, GuideBite1);
			TriggerFireFlame(pos.x, pos.y - 20, pos.z, FlameType::Trail);
			SoundEffect(SFX_TR4_LOOP_FOR_SMALL_FIRES, &item->Pose);

			short random = GetRandomControl();
			SpawnDynamicLight(
				pos.x, pos.y, pos.z,
				15,
				255 - ((random >> 4) & 0x1F),
				192 - ((random >> 6) & 0x1F),
				random & 0x3F);

			if (item->Animation.AnimNumber == GUIDE_ANIM_LIGHTING_TORCH)
			{
				if (item->Animation.FrameNumber > 32 &&
					item->Animation.FrameNumber < 42)
				{
					TriggerFireFlame(
						(random & 0x3F) + pos.x - 32,
						((random / 8) & 0x3F) + pos.y - 128,
						pos.z + ((random / 64) & 0x3F) - 32,
						FlameType::Trail);
				}
			}
		}

		item->AIBits = FOLLOW;
		item->HitPoints = NOT_TARGETABLE;

		GetAITarget(creature);

		AI_INFO AI;
		AI_INFO laraAI;

		int dx = LaraItem->Pose.Position.x - item->Pose.Position.x;
		int dz = LaraItem->Pose.Position.z - item->Pose.Position.z;

		laraAI.angle = phd_atan(dz, dx) - item->Pose.Orientation.y;

		laraAI.ahead = true;