#include "traps.h"
#include "..\Global\global.h"
#include "items.h"
#include "collide.h"

static short CeilingTrapDoorBounds[12] = {-256, 256, 0, 900, -768, -256, -1820, 1820, -5460, 5460, -1820, 1820};
static PHD_VECTOR CeilingTrapDoorPos = {0, 1056, -480};
static short FloorTrapDoorBounds[12] = {-256, 256, 0, 0, -1024, -256, -1820, 1820, -5460, 5460, -1820, 1820};
static PHD_VECTOR FloorTrapDoorPos = {0, 0, -655};

void LaraBurn()
{
	if (!Lara.burn && !Lara.burnSmoke)
	{
		short fxNum = CreateNewEffect(LaraItem->roomNumber);
		if (fxNum != NO_ITEM)
		{
			Effects[fxNum].objectNumber = ID_FLAME;
			Lara.burn = true;
		}
	}
}

void InitialiseTrapDoor(short itemNumber)
{
	ITEM_INFO* item;

	item = &Items[itemNumber];
	CloseTrapDoor(item);
}

void TrapDoorCollision(short itemNumber, ITEM_INFO* l, COLL_INFO* coll)
{
	ITEM_INFO* item;

	item = &Items[itemNumber];
	if (item->currentAnimState == 1 && item->frameNumber == Anims[item->animNumber].frameEnd)
		ObjectCollision(itemNumber, l, coll);
}

void CeilingTrapDoorCollision(short itemNumber, ITEM_INFO* l, COLL_INFO* coll)
{
	ITEM_INFO* item;
	int result, result2;

	item = &Items[itemNumber];
	result = TestLaraPosition(CeilingTrapDoorBounds, item, l);
	l->pos.yRot += ANGLE(180);
	result2 = TestLaraPosition(CeilingTrapDoorBounds, item, l);
	l->pos.yRot += ANGLE(180);
	if (TrInput & IN_ACTION && item->status != ITEM_DEACTIVATED && l->currentAnimState == STATE_LARA_JUMP_UP && l->gravityStatus && Lara.gunStatus == LG_NO_ARMS && (result || result2))
	{
		AlignLaraPosition(&CeilingTrapDoorPos, item, l);
		if (result2)
			l->pos.yRot += ANGLE(180);
		Lara.headYrot = 0;
		Lara.headXrot = 0;
		Lara.torsoYrot = 0;
		Lara.torsoXrot = 0;
		Lara.gunStatus = LG_HANDS_BUSY;
		l->gravityStatus = false;
		l->fallspeed = 0;
		l->animNumber = ANIMATION_LARA_CEILING_TRAPDOOR_OPEN;
		l->frameNumber = Anims[l->animNumber].frameBase;
		l->currentAnimState = STATE_LARA_FREEFALL_BIS;
		AddActiveItem(itemNumber);
		item->status = ITEM_ACTIVE;
		item->goalAnimState = 1;

		UseForcedFixedCamera = 1;
		ForcedFixedCamera.x = item->pos.xPos - SIN(item->pos.yRot) / 16;
		ForcedFixedCamera.y = item->pos.yPos + 1024;
		ForcedFixedCamera.z = item->pos.zPos - COS(item->pos.yRot) / 16;
		ForcedFixedCamera.roomNumber = item->roomNumber;
	}
	else
	{
		if (item->currentAnimState == 1)
			UseForcedFixedCamera = 0;
	}

	if (item->currentAnimState == 1 && item->frameNumber == Anims[item->animNumber].frameEnd)
		ObjectCollision(itemNumber, l, coll);
}

void FloorTrapDoorCollision(short itemNumber, ITEM_INFO* l, COLL_INFO* coll)
{
	ITEM_INFO* item;

	item = &Items[itemNumber];
	if (TrInput & IN_ACTION && item->status != ITEM_DEACTIVATED && l->currentAnimState == STATE_LARA_STOP && l->animNumber == ANIMATION_LARA_STAY_IDLE && Lara.gunStatus == LG_NO_ARMS
		|| Lara.isMoving && Lara.generalPtr == (void *) itemNumber)
	{
		if (TestLaraPosition(FloorTrapDoorBounds, item, l))
		{
			if (MoveLaraPosition(&FloorTrapDoorPos, item, l))
			{
				l->animNumber = ANIMATION_LARA_FLOOR_TRAPDOOR_OPEN;
				l->frameNumber = Anims[l->animNumber].frameBase;
				l->currentAnimState = STATE_LARA_TRAPDOOR_FLOOR_OPEN;
				Lara.isMoving = false;
				Lara.headYrot = 0;
				Lara.headXrot = 0;
				Lara.torsoYrot = 0;
				Lara.torsoXrot = 0;
				Lara.gunStatus = LG_HANDS_BUSY;
				AddActiveItem(itemNumber);
				item->status = ITEM_ACTIVE;
				item->goalAnimState = 1;

				UseForcedFixedCamera = 1;
				ForcedFixedCamera.x = item->pos.xPos - SIN(item->pos.yRot) / 8;
				ForcedFixedCamera.y = item->pos.yPos - 2048;
				if (ForcedFixedCamera.y < Rooms[item->roomNumber].maxceiling)
					ForcedFixedCamera.y = Rooms[item->roomNumber].maxceiling;
				ForcedFixedCamera.z = item->pos.zPos - COS(item->pos.yRot) / 8;
				ForcedFixedCamera.roomNumber = item->roomNumber;
			}
			else
			{
				Lara.generalPtr = (void *) itemNumber;
			}
		}
	}
	else
	{
		if (item->currentAnimState == 1)
			UseForcedFixedCamera = 0;
	}

	if (item->currentAnimState == 1 && item->frameNumber == Anims[item->animNumber].frameEnd)
		ObjectCollision(itemNumber, l, coll);
}

void TrapDoorControl(short itemNumber)
{
	ITEM_INFO* item;

	item = &Items[itemNumber];
	if (TriggerActive(item))
	{
		if (!item->currentAnimState && item->triggerFlags >= 0)
		{
			item->goalAnimState = 1;
		}
		else if (item->frameNumber == Anims[item->animNumber].frameEnd && CurrentLevel == 14 && item->objectNumber == ID_TRAPDOOR1)
		{
			item->status = ITEM_INVISIBLE;
		}
	}
	else
	{
		item->status = ITEM_ACTIVE;

		if (item->currentAnimState == 1)
		{
			item->goalAnimState = 0;
		}
	}

	AnimateItem(item);

	if (item->currentAnimState == 1 && (item->itemFlags[2] || JustLoaded))
	{
		OpenTrapDoor(item);
	}
	else if (!item->currentAnimState && !item->itemFlags[2])
	{
		CloseTrapDoor(item);
	}
}

void CloseTrapDoor(ITEM_INFO* item)
{
	ROOM_INFO* r;
	FLOOR_INFO* floor;
	unsigned short pitsky;

	r = &Rooms[item->roomNumber];
	floor = &XZ_GET_SECTOR(r, item->pos.xPos - r->x, item->pos.zPos - r->z);
	pitsky = 0;

	if (item->pos.yPos == r->minfloor)
	{
		pitsky = floor->pitRoom;
		floor->pitRoom = NO_ROOM;
		r = &Rooms[pitsky];
		floor = &XZ_GET_SECTOR(r, item->pos.xPos - r->x, item->pos.zPos - r->z);
		pitsky |= floor->skyRoom << 8;
		floor->skyRoom = NO_ROOM;
	}
	else if (item->pos.yPos == r->maxceiling)
	{
		pitsky = floor->skyRoom;
		floor->skyRoom = NO_ROOM;
		r = &Rooms[pitsky];
		floor = &XZ_GET_SECTOR(r, item->pos.xPos - r->x, item->pos.zPos - r->z);
		pitsky = pitsky << 8 | floor->pitRoom;
		floor->pitRoom = NO_ROOM;
	}

	item->itemFlags[2] = 1;
	item->itemFlags[3] = pitsky;
}

void OpenTrapDoor(ITEM_INFO* item)
{
	ROOM_INFO* r;
	FLOOR_INFO* floor;
	unsigned short pitsky;

	r = &Rooms[item->roomNumber];
	floor = &XZ_GET_SECTOR(r, item->pos.xPos - r->x, item->pos.zPos - r->z);
	pitsky = item->itemFlags[3];

	if (item->pos.yPos == r->minfloor)
	{
		floor->pitRoom = (unsigned char) pitsky;
		r = &Rooms[floor->pitRoom];
		floor = &XZ_GET_SECTOR(r, item->pos.xPos - r->x, item->pos.zPos - r->z);
		floor->skyRoom = pitsky >> 8;
	}
	else
	{
		floor->skyRoom = pitsky >> 8;
		r = &Rooms[floor->skyRoom];
		floor = &XZ_GET_SECTOR(r, item->pos.xPos - r->x, item->pos.zPos - r->z);
		floor->pitRoom = (unsigned char) pitsky;
	}

	item->itemFlags[2] = 0;
}