TombEngine/TR5Main/Objects/knight.cpp

#include "newobjects.h"
#include "../Game/Box.h"
#include "../Game/items.h"
#include "../Game/lot.h"
#include "../Game/control.h"
#include "../Game/effects.h"
#include "../Game/draw.h"
#include "../Game/sphere.h"
#include "../Game/effect2.h"
#include "../Game/people.h"
#include "../Game/debris.h"

BITE_INFO knightTemplarBite = { 0, 0, 0, 11 };

void __cdecl InitialiseKnightTemplar(short itemNum)
{
	ITEM_INFO* item = &Items[itemNum];

	ClearItem(itemNum);

	item->animNumber = Objects[ID_KNIGHT_TEMPLAR].animIndex + 2;
	item->goalAnimState = 1;
	item->currentAnimState = 1;
	item->frameNumber = Anims[item->animNumber].frameBase;
	item->meshBits &= 0xF7FF;
}

void __cdecl KnightTemplarControl(short itemNum)
{
	if (!CreatureActive(itemNum))
		return;

	ITEM_INFO* item = &Items[itemNum];
	OBJECT_INFO* obj = &Objects[item->objectNumber];

	if (item->animNumber == obj->animIndex ||
		item->animNumber - obj->animIndex == 1 ||
		item->animNumber - obj->animIndex == 11 ||
		item->animNumber - obj->animIndex == 12)
	{
		if (GetRandomControl() & 1)
		{
			PHD_VECTOR pos;

			pos.x = 0;
			pos.y = 48;
			pos.z = 448;

			GetJointAbsPosition(item, &pos, 10);

			TriggerMetalSparks(pos.x, pos.y, pos.z,
				(GetRandomControl() & 0x1FF) - 256,
				-128 - (GetRandomControl() & 0x7F),
				(GetRandomControl() & 0x1FF) - 256,
				0);
		}
	}

	CREATURE_INFO* creature = (CREATURE_INFO*)item->data;

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

	// Knight is immortal
	if (item->hitPoints < obj->hitPoints)
		item->hitPoints = obj->hitPoints;

	if (item->aiBits)
		GetAITarget(creature);
	else if (creature->hurtByLara)
		creature->enemy = LaraItem;

	AI_INFO info;
	AI_INFO laraInfo;

	CreatureAIInfo(item, &info);

	int a = 0;
	if (creature->enemy != LaraItem)
		a = ATAN(item->pos.zPos - LaraItem->pos.zPos, item->pos.xPos - LaraItem->pos.xPos);

	GetCreatureMood(item, &info, VIOLENT);
	CreatureMood(item, &info, VIOLENT);

	angle = CreatureTurn(item, creature->maximumTurn);

	if (info.ahead)
	{
		joint0 = info.angle >> 1;
		joint2 = info.angle >> 1;
		joint1 = info.xAngle;
	}

	short frameBase = 0;
	short frameNumber = 0;

	switch (item->currentAnimState)
	{
	case 1:
		creature->flags = 0;
		creature->maximumTurn = ANGLE(2);

		item->goalAnimState = 2;

		if (info.distance > SQUARE(682))
		{
			if (Lara.target == item)
				item->goalAnimState = 6;
		}
		else if (GetRandomControl() & 1)
		{
			item->goalAnimState = 4;
		}
		else if (GetRandomControl() & 1)
		{
			item->goalAnimState = 3;
		}
		else
		{
			item->goalAnimState = 5;
		}

		break;

	case 2:
		creature->maximumTurn = ANGLE(7);

		if (Lara.target == item || info.distance <= SQUARE(682))
		{
			item->goalAnimState = 1;
		}

		break;

	case 3:
	case 4:
	case 5:
		creature->maximumTurn = 0;

		if (abs(info.angle) >= ANGLE(1))
		{
			if (info.angle >= 0)
			{
				item->pos.yRot += ANGLE(1);
			}
			else
			{
				item->pos.yRot -= ANGLE(1);
			}
		}
		else
		{
			item->pos.yRot += info.angle;
		}

		frameNumber = item->frameNumber;
		frameBase = Anims[item->animNumber].frameBase;

		if (frameNumber > frameBase + 42 && frameNumber < frameBase + 51)
		{
			PHD_VECTOR pos;
			pos.x = 0;
			pos.y = 0;
			pos.z = 0;

			GetJointAbsPosition(item, &pos, 11);

			ROOM_INFO* room = &Rooms[item->roomNumber];

			FLOOR_INFO* currentFloor = &room->floor[((pos.z - room->z) >> WALL_SHIFT) +
				((pos.z - room->x) >> WALL_SHIFT) * room->xSize];

			if (currentFloor->stopper)
			{
				MESH_INFO* mesh = room->mesh;

				for (int i = 0; i < room->numMeshes; i++)
				{
					if (floor(pos.x) == floor(mesh->x) &&
						floor(pos.z) == floor(mesh->z) &&
						mesh->staticNumber >= 50)
					{
						ShatterObject(NULL, mesh, -64, LaraItem->roomNumber, 0);
						SoundEffect(SFX_TR4_HIT_ROCK_ID347, &item->pos, 0);

						mesh->Flags &= ~1;
						currentFloor->stopper = false;
						int height = GetFloorHeight(currentFloor, pos.x, pos.y, pos.z);
						TestTriggers(TriggerIndex, 1, 0);
					}

					mesh++;
				}
			}

			if (!creature->flags)
			{
				if (item->touchBits & 0xC00)
				{
					LaraItem->hitPoints -= 120;
					LaraItem->hitStatus = true;

					CreatureEffect2(
						item,
						&knightTemplarBite,
						20,
						-1,
						DoBloodSplat);

					creature->flags = 1;
				}
			}
		}

	case 6:
		creature->maximumTurn = 0;

		if (abs(info.angle) >= ANGLE(1))
		{
			if (info.angle >= 0)
			{
				item->pos.yRot += ANGLE(1);
			}
			else
			{
				item->pos.yRot -= ANGLE(1);
			}
		}
		else
		{
			item->pos.yRot += info.angle;
		}

		if (item->hitStatus)
		{
			if (GetRandomControl() & 1)
			{
				item->goalAnimState = 7;
			}
			else
			{
				item->goalAnimState = 8;
			}
		}
		else if (info.distance <= SQUARE(682) || Lara.target != item)
		{
			item->goalAnimState = 1;
		}
		else
		{
			item->goalAnimState = 6;
		}
		break;

	default:
		break;

	}

	CreatureTilt(item, 0);

	CreatureJoint(item, 0, joint0);
	CreatureJoint(item, 1, joint1);
	CreatureJoint(item, 2, joint2);

	CreatureAnimation(itemNum, angle, 0);
}