/*
** g_levellocals.h
** The static data for a level
**
**---------------------------------------------------------------------------
** Copyright 1998-2016 Randy Heit
** Copyright 2005-2017 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/

#pragma once

#include "doomdata.h"
#include "g_level.h"
#include "r_defs.h"
#include "r_sky.h"
#include "portal.h"
#include "p_blockmap.h"
#include "p_local.h"
#include "po_man.h"
#include "p_acs.h"
#include "p_tags.h"
#include "actor.h"
#include "p_destructible.h"
#include "r_data/r_sections.h"
#include "r_data/r_canvastexture.h"

class DACSThinker;
class DFraggleThinker;
class DSpotState;

struct FLevelData
{
	TArray<vertex_t> vertexes;
	TArray<sector_t> sectors;
	TArray<line_t*> linebuffer;	// contains the line lists for the sectors.
	TArray<subsector_t*> subsectorbuffer;	// contains the subsector lists for the sectors.
	TArray<line_t> lines;
	TArray<side_t> sides;
	TArray<seg_t *> segbuffer;	// contains the seg links for the sidedefs.
	TArray<seg_t> segs;
	TArray<subsector_t> subsectors;
	TArray<node_t> nodes;
	TArray<subsector_t> gamesubsectors;
	TArray<node_t> gamenodes;
	node_t *headgamenode;
	TArray<uint8_t> rejectmatrix;
	TArray<zone_t>	Zones;
	TArray<FPolyObj> Polyobjects;

	TArray<FSectorPortal> sectorPortals;
	TArray<FLinePortal> linePortals;

	// Portal information.
	FDisplacementTable Displacements;
	FPortalBlockmap PortalBlockmap;
	TArray<FLinePortal*> linkedPortals;	// only the linked portals, this is used to speed up looking for them in P_CollectConnectedGroups.
	TArray<FSectorPortalGroup *> portalGroups;
	TArray<FLinePortalSpan> linePortalSpans;
	FSectionContainer sections;
	FCanvasTextureInfo canvasTextureInfo;

	// [ZZ] Destructible geometry information
	TMap<int, FHealthGroup> healthGroups;

	FBlockmap blockmap;
	TArray<polyblock_t *> PolyBlockMap;

	// These are copies of the loaded map data that get used by the savegame code to skip unaltered fields
	// Without such a mechanism the savegame format would become too slow and large because more than 80-90% are normally still unaltered.
	TArray<sector_t>	loadsectors;
	TArray<line_t>	loadlines;
	TArray<side_t>	loadsides;

	// Maintain single and multi player starting spots.
	TArray<FPlayerStart> deathmatchstarts;
	FPlayerStart		playerstarts[MAXPLAYERS];
	TArray<FPlayerStart> AllPlayerStarts;

	FBehaviorContainer Behaviors;
};

struct FLevelLocals : public FLevelData
{
	void Tick();
	void Mark();
	void AddScroller(int secnum);
	void SetInterMusic(const char *nextmap);
	void SetMusicVolume(float v);
	void ClearLevelData();
	void ClearPortals();
	bool CheckIfExitIsGood(AActor *self, level_info_t *newmap);
	void FormatMapName(FString &mapname, const char *mapnamecolor);
	void ClearAllSubsectorLinks();
	void TranslateLineDef (line_t *ld, maplinedef_t *mld, int lineindexforid = -1);

	FSectorTagIterator GetSectorTagIterator(int tag)
	{
		return FSectorTagIterator(tag);
	}
	FSectorTagIterator GetSectorTagIterator(int tag, line_t *line)
	{
		return FSectorTagIterator(tag, line);
	}
	FLineIdIterator GetLineIdIterator(int tag)
	{
		return FLineIdIterator(tag);
	}
	template<class T> TThinkerIterator<T> GetThinkerIterator(FName subtype = NAME_None)
	{
		if (subtype == NAME_None) return TThinkerIterator<T>();
		else return TThinkerIterator<T>(subtype);
	}
	FActorIterator GetActorIterator(int tid)
	{
		return FActorIterator(tid);
	}
	NActorIterator GetActorIterator(FName type, int tid)
	{
		return NActorIterator(type, tid);
	}
	bool SectorHasTags(sector_t *sector)
	{
		return tagManager.SectorHasTags(sector);
	}
	bool SectorHasTag(sector_t *sector, int tag)
	{
		return tagManager.SectorHasTag(sector, tag);
	}
	bool SectorHasTag(int sector, int tag)
	{
		return tagManager.SectorHasTag(sector, tag);
	}
	int GetFirstSectorTag(const sector_t *sect) const
	{
		return tagManager.GetFirstSectorTag(sect);
	}
	int GetFirstSectorTag(int i) const
	{
		return tagManager.GetFirstSectorTag(i);
	}
	int GetFirstLineId(const line_t *sect) const
	{
		return tagManager.GetFirstLineID(sect);
	}

	bool LineHasId(int line, int tag)
	{
		return tagManager.LineHasID(line, tag);
	}
	bool LineHasId(line_t *line, int tag)
	{
		return tagManager.LineHasID(line, tag);
	}

	int FindFirstSectorFromTag(int tag)
	{
		auto it = GetSectorTagIterator(tag);
		return it.Next();
	}
	
	int FindFirstLineFromID(int tag)
	{
		auto it = GetLineIdIterator(tag);
		return it.Next();
	}

	sector_t *PointInSector(const DVector2 &pos)
	{
		return P_PointInSector(pos);
	}
	
	FPolyObj *GetPolyobj (int polyNum)
	{
		auto index = Polyobjects.FindEx([=](const auto &poly) { return poly.tag == polyNum; });
		return index == Polyobjects.Size()? nullptr : &Polyobjects[index];
	}


	uint8_t		md5[16];			// for savegame validation. If the MD5 does not match the savegame won't be loaded.
	int			time;			// time in the hub
	int			maptime;		// time in the map
	int			totaltime;		// time in the game
	int			starttime;
	int			partime;
	int			sucktime;
	uint32_t	spawnindex;

	level_info_t *info;
	int			cluster;
	int			clusterflags;
	int			levelnum;
	int			lumpnum;
	FString		LevelName;
	FString		MapName;			// the lump name (E1M1, MAP01, etc)
	FString		NextMap;			// go here when using the regular exit
	FString		NextSecretMap;		// map to go to when used secret exit
	FString		F1Pic;
	EMapType	maptype;

	uint64_t	ShaderStartTime = 0;	// tell the shader system when we started the level (forces a timer restart)

	static const int BODYQUESIZE = 32;
	TObjPtr<AActor*> bodyque[BODYQUESIZE];
	int bodyqueslot;

	int NumMapSections;

	uint32_t		flags;
	uint32_t		flags2;
	uint32_t		flags3;

	uint32_t		fadeto;					// The color the palette fades to (usually black)
	uint32_t		outsidefog;				// The fog for sectors with sky ceilings

	uint32_t		hazardcolor;			// what color strife hazard blends the screen color as
	uint32_t		hazardflash;			// what color strife hazard flashes the screen color as

	FString		Music;
	int			musicorder;
	int			cdtrack;
	unsigned int cdid;
	FTextureID	skytexture1;
	FTextureID	skytexture2;

	float		skyspeed1;				// Scrolling speed of sky textures, in pixels per ms
	float		skyspeed2;

	int			total_secrets;
	int			found_secrets;

	int			total_items;
	int			found_items;

	int			total_monsters;
	int			killed_monsters;

	double		gravity;
	double		aircontrol;
	double		airfriction;
	int			airsupply;
	int			DefaultEnvironment;		// Default sound environment.

	TArray<DVector2>	Scrolls;		// NULL if no DScrollers in this level

	int8_t		WallVertLight;			// Light diffs for vert/horiz walls
	int8_t		WallHorizLight;

	bool		FromSnapshot;			// The current map was restored from a snapshot
	bool		HasHeightSecs;			// true if some Transfer_Heights effects are present in the map. If this is false, some checks in the renderer can be shortcut.
	bool		HasDynamicLights;		// Another render optimization for maps with no lights at all.

	double		teamdamage;

	// former OpenGL-exclusive properties that should also be usable by the true color software renderer.
	int fogdensity;
	int outsidefogdensity;
	int skyfog;

	FName		deathsequence;
	float		pixelstretch;
	float		MusicVolume;

	// Hardware render stuff that can either be set via CVAR or MAPINFO
	ELightMode	lightMode;
	bool		brightfog;
	bool		lightadditivesurfaces;
	bool		notexturefill;
	int			ImpactDecalCount;

	FDynamicLight *lights;

	// links to global game objects
	TArray<TObjPtr<AActor *>> CorpseQueue;
	TObjPtr<DFraggleThinker *> FraggleScriptThinker = nullptr;
	TObjPtr<DACSThinker*> ACSThinker = nullptr;

	TObjPtr<DSpotState *> SpotState = nullptr;

	bool		IsJumpingAllowed() const;
	bool		IsCrouchingAllowed() const;
	bool		IsFreelookAllowed() const;

	node_t		*HeadNode() const
	{
		return nodes.Size() == 0 ? nullptr : &nodes[nodes.Size() - 1];
	}
	node_t		*HeadGamenode() const
	{
		return headgamenode;
	}

	// Returns true if level is loaded from saved game or is being revisited as a part of a hub
	bool		IsReentering() const
	{
		return savegamerestore
			|| (info != nullptr && info->Snapshot.mBuffer != nullptr && info->isValid());
	}
};

#ifndef NO_DEFINE_LEVEL

extern FLevelLocals level;

inline FSectorPortal *line_t::GetTransferredPortal()
{
	return portaltransferred >= level.sectorPortals.Size() ? (FSectorPortal*)nullptr : &level.sectorPortals[portaltransferred];
}

inline FSectorPortal *sector_t::GetPortal(int plane)
{
	return &level.sectorPortals[Portals[plane]];
}

inline double sector_t::GetPortalPlaneZ(int plane)
{
	return level.sectorPortals[Portals[plane]].mPlaneZ;
}

inline DVector2 sector_t::GetPortalDisplacement(int plane)
{
	return level.sectorPortals[Portals[plane]].mDisplacement;
}

inline int sector_t::GetPortalType(int plane)
{
	return level.sectorPortals[Portals[plane]].mType;
}

inline int sector_t::GetOppositePortalGroup(int plane)
{
	return level.sectorPortals[Portals[plane]].mDestination->PortalGroup;
}

inline bool sector_t::PortalBlocksView(int plane)
{
	if (GetPortalType(plane) != PORTS_LINKEDPORTAL) return false;
	return !!(planes[plane].Flags & (PLANEF_NORENDER | PLANEF_DISABLED | PLANEF_OBSTRUCTED));
}

inline bool sector_t::PortalBlocksSight(int plane)
{
	return PLANEF_LINKED != (planes[plane].Flags & (PLANEF_NORENDER | PLANEF_NOPASS | PLANEF_DISABLED | PLANEF_OBSTRUCTED | PLANEF_LINKED));
}

inline bool sector_t::PortalBlocksMovement(int plane)
{
	return PLANEF_LINKED != (planes[plane].Flags & (PLANEF_NOPASS | PLANEF_DISABLED | PLANEF_OBSTRUCTED | PLANEF_LINKED));
}

inline bool sector_t::PortalBlocksSound(int plane)
{
	return PLANEF_LINKED != (planes[plane].Flags & (PLANEF_BLOCKSOUND | PLANEF_DISABLED | PLANEF_OBSTRUCTED | PLANEF_LINKED));
}

inline bool sector_t::PortalIsLinked(int plane)
{
	return (GetPortalType(plane) == PORTS_LINKEDPORTAL);
}

inline FLinePortal *line_t::getPortal() const
{
	return portalindex >= level.linePortals.Size() ? (FLinePortal*)NULL : &level.linePortals[portalindex];
}

// returns true if the portal is crossable by actors
inline bool line_t::isLinePortal() const
{
	return portalindex >= level.linePortals.Size() ? false : !!(level.linePortals[portalindex].mFlags & PORTF_PASSABLE);
}

// returns true if the portal needs to be handled by the renderer
inline bool line_t::isVisualPortal() const
{
	return portalindex >= level.linePortals.Size() ? false : !!(level.linePortals[portalindex].mFlags & PORTF_VISIBLE);
}

inline line_t *line_t::getPortalDestination() const
{
	return portalindex >= level.linePortals.Size() ? (line_t*)NULL : level.linePortals[portalindex].mDestination;
}

inline int line_t::getPortalAlignment() const
{
	return portalindex >= level.linePortals.Size() ? 0 : level.linePortals[portalindex].mAlign;
}

inline bool line_t::hitSkyWall(AActor* mo) const
{
	return backsector &&
		backsector->GetTexture(sector_t::ceiling) == skyflatnum &&
		mo->Z() >= backsector->ceilingplane.ZatPoint(mo->PosRelative(this));
}
#endif