TombEngine/TR5Main/Objects/Generic/Object/generic_trapdoor.cpp

#include "framework.h"
#include "Objects/Generic/Object/generic_trapdoor.h"
#include "Game/Lara/lara.h"
#include "Game/Lara/lara_helpers.h"
#include "Game/collision/floordata.h"
#include "Specific/input.h"
#include "Game/camera.h"
#include "Game/control/control.h"
#include "Specific/level.h"
#include "Game/animation.h"
#include "Game/items.h"
#include "Renderer/Renderer11.h"
#include "Game/collision/collide_item.h"

using namespace TEN::Renderer;

using namespace TEN::Floordata;

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

void InitialiseTrapDoor(short itemNumber)
{
	ITEM_INFO* item;

	item = &g_Level.Items[itemNumber];
	TEN::Floordata::UpdateBridgeItem(itemNumber);
	CloseTrapDoor(itemNumber);
}

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

	item = &g_Level.Items[itemNumber];
	if (item->ActiveState == 1 && item->FrameNumber == g_Level.Anims[item->AnimNumber].frameEnd)
		ObjectCollision(itemNumber, l, coll);
}

void CeilingTrapDoorCollision(short itemNumber, ITEM_INFO* l, COLL_INFO* coll)
{
	auto item = &g_Level.Items[itemNumber];
	bool itemIsAbove = item->Position.yPos <= l->Position.yPos - LARA_HEIGHT + LARA_HEADROOM;
	bool result = TestLaraPosition(&CeilingTrapDoorBounds, item, l);
	l->Position.yRot += ANGLE(180);
	bool result2 = TestLaraPosition(&CeilingTrapDoorBounds, item, l);
	l->Position.yRot += ANGLE(180);

	if (TrInput & IN_ACTION && item->Status != ITEM_ACTIVE && l->ActiveState == LS_JUMP_UP && l->Airborne && Lara.Control.HandStatus == HandStatus::Free && itemIsAbove && (result || result2))
	{
		AlignLaraPosition(&CeilingTrapDoorPos, item, l);
		if (result2)
			l->Position.yRot += ANGLE(180);
		
		ResetLaraFlex(l);
		Lara.Control.HandStatus = HandStatus::Busy;
		l->Airborne = false;
		l->VerticalVelocity = 0;
		l->AnimNumber = LA_TRAPDOOR_CEILING_OPEN;
		l->FrameNumber = g_Level.Anims[l->AnimNumber].frameBase;
		l->ActiveState = LS_FREEFALL_BIS;
		AddActiveItem(itemNumber);
		item->Status = ITEM_ACTIVE;
		item->TargetState = 1;

		UseForcedFixedCamera = 1;
		ForcedFixedCamera.x = item->Position.xPos - phd_sin(item->Position.yRot) * 1024;
		ForcedFixedCamera.y = item->Position.yPos + 1024;
		ForcedFixedCamera.z = item->Position.zPos - phd_cos(item->Position.yRot) * 1024;
		ForcedFixedCamera.roomNumber = item->RoomNumber;
	}
	else
	{
		if (item->ActiveState == 1)
			UseForcedFixedCamera = 0;
	}

	if (item->ActiveState == 1 && item->FrameNumber == g_Level.Anims[item->AnimNumber].frameEnd)
		ObjectCollision(itemNumber, l, coll);
}

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

	item = &g_Level.Items[itemNumber];
	if (TrInput & IN_ACTION && item->Status != ITEM_ACTIVE && l->ActiveState == LS_IDLE && l->AnimNumber == LA_STAND_IDLE && Lara.Control.HandStatus == HandStatus::Free
		|| Lara.Control.IsMoving && Lara.interactedItem == itemNumber)
	{
		if (TestLaraPosition(&FloorTrapDoorBounds, item, l))
		{
			if (MoveLaraPosition(&FloorTrapDoorPos, item, l))
			{
				l->AnimNumber = LA_TRAPDOOR_FLOOR_OPEN;
				l->FrameNumber = g_Level.Anims[l->AnimNumber].frameBase;
				l->ActiveState = LS_TRAPDOOR_FLOOR_OPEN;
				Lara.Control.IsMoving = false;
				ResetLaraFlex(l);
				Lara.Control.HandStatus = HandStatus::Busy;
				AddActiveItem(itemNumber);
				item->Status = ITEM_ACTIVE;
				item->TargetState = 1;

				UseForcedFixedCamera = 1;
				ForcedFixedCamera.x = item->Position.xPos - phd_sin(item->Position.yRot) * 2048;
				ForcedFixedCamera.y = item->Position.yPos - 2048;
				if (ForcedFixedCamera.y < g_Level.Rooms[item->RoomNumber].maxceiling)
					ForcedFixedCamera.y = g_Level.Rooms[item->RoomNumber].maxceiling;
				ForcedFixedCamera.z = item->Position.zPos - phd_cos(item->Position.yRot) * 2048;
				ForcedFixedCamera.roomNumber = item->RoomNumber;
			}
			else
			{
				Lara.interactedItem =itemNumber;
			}
		}
	}
	else
	{
		if (item->ActiveState == 1)
			UseForcedFixedCamera = 0;
	}

	if (item->ActiveState == 1 && item->FrameNumber == g_Level.Anims[item->AnimNumber].frameEnd)
		ObjectCollision(itemNumber, l, coll);
}

void TrapDoorControl(short itemNumber)
{
	ITEM_INFO* item;

	item = &g_Level.Items[itemNumber];
	if (TriggerActive(item))
	{
		if (!item->ActiveState && item->TriggerFlags >= 0)
		{
			item->TargetState = 1;
		}
		else if (item->FrameNumber == g_Level.Anims[item->AnimNumber].frameEnd && CurrentLevel == 14 && item->ObjectNumber == ID_TRAPDOOR1)
		{
			item->Status = ITEM_INVISIBLE;
		}
	}
	else
	{
		item->Status = ITEM_ACTIVE;

		if (item->ActiveState == 1)
		{
			item->TargetState = 0;
		}
	}

	AnimateItem(item);

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

void CloseTrapDoor(short itemNumber)
{
	ITEM_INFO* item = &g_Level.Items[itemNumber];
	item->ItemFlags[2] = 1;
}

void OpenTrapDoor(short itemNumber)
{
	ITEM_INFO* item = &g_Level.Items[itemNumber];
	item->ItemFlags[2] = 0;
}

int TrapDoorFloorBorder(short itemNumber)
{
	return GetBridgeBorder(itemNumber, false);
}

int TrapDoorCeilingBorder(short itemNumber)
{
	return GetBridgeBorder(itemNumber, true);
}

std::optional<int> TrapDoorFloor(short itemNumber, int x, int y, int z)
{
	ITEM_INFO* item = &g_Level.Items[itemNumber];
	if (!item->MeshBits || item->ItemFlags[2] == 0)
		return std::nullopt;

	return GetBridgeItemIntersect(itemNumber, x, y, z, false);
}

std::optional<int> TrapDoorCeiling(short itemNumber, int x, int y, int z)
{
	ITEM_INFO* item = &g_Level.Items[itemNumber];

	if (!item->MeshBits || item->ItemFlags[2] == 0)
		return std::nullopt;

	return GetBridgeItemIntersect(itemNumber, x, y, z, true);
}