#ifndef NET_MINECRAFT_WORLD_LEVEL__Level_H__
#define NET_MINECRAFT_WORLD_LEVEL__Level_H__

//package net.minecraft.world.level;

#include <set>
#include <string>

//#include "world/Difficulty.h"

#include "LevelSettings.h"
#include "LevelConstants.h"
#include "ChunkPos.h"
#include "TickNextTickData.h"
#include "storage/LevelData.h"
#include "LightUpdate.h"
#include "LevelSource.h"
#include "../Pos.h"
#include "../../SharedConstants.h"

#include "biome/Biome.h"

class BiomeSource;
class Dimension;
class ChunkSource;
class LevelStorage;
class LightLayer;
class Path;
class TripodCamera;
class Player;
class PathFinder;
class LevelListener;
class IRakNetInstance;
class Zombie;
class TileEntity;

typedef std::vector<Entity*> EntityList;
typedef std::map<int, Entity*> EntityMap;
typedef std::vector<TileEntity*> TileEntityList;
typedef std::vector<Player*> PlayerList;
typedef std::vector<LevelListener*> ListenerList;
typedef std::set<ChunkPos> ChunkPosSet;
typedef std::set<TickNextTickData> TickDataSet;
typedef std::vector<LightUpdate> LightUpdateList;

typedef struct PRInfo {
 	PRInfo(Entity* e, int ticks): e(e), ticks(ticks) {}
	Entity* e;
	int ticks;
} PRInfo;
typedef std::vector<PRInfo> PendingList;

typedef struct AdventureSettings {
    AdventureSettings();

    bool doTickTime;
    bool noPvP;
	bool noPvM;
	bool noMvP;
    bool immutableWorld;
	bool showNameTags;
} AdventureSettings;

class Level: public LevelSource
{
	static const int MAX_TICK_TILES_PER_TICK = 100; // was 1000

public:
    static const int MAX_LEVEL_SIZE = 32000000;
    static const short DEPTH = LEVEL_HEIGHT;
    static const short SEA_LEVEL = DEPTH / 2 - 1;

    static const int MAX_BRIGHTNESS = 15;
    static const int TICKS_PER_DAY = SharedConstants::TicksPerSecond * 60 * 16;// SharedConstants::TicksPerSecond * 60 * 12; // ORG:20*60*20
	static const int MIDDLE_OF_NIGHT_TIME = 12000;
	static const int genDepthBits = 7;
	static const int genDepthBitsPlusFour = genDepthBits + 4;
	static const int genDepth = 1 << genDepthBits;
	static const int genDepthMinusOne = genDepth - 1;


    Level(LevelStorage* levelStorage, const std::string& levelName, const LevelSettings& settings, int generatorVersion, Dimension* fixedDimension = NULL);
	virtual ~Level();

	void _init(const std::string& levelName, const LevelSettings& settings, int levelVersion, Dimension* fixedDimension);

	void validateSpawn();

	int getTopTile(int x, int z);
	int getTopTileY(int x, int z);
    int getTopSolidBlock(int x, int z);

	bool isEmptyTile(int x, int y, int z);
	bool isSolidRenderTile(int x, int y, int z);
	bool isSolidBlockingTile(int x, int y, int z);

	int getTile(int x, int y, int z);
    bool setTile(int x, int y, int z, int tile);

	bool hasChunkAt(int x, int y, int z);
    bool hasChunksAt(int x, int y, int z, int r);
    bool hasChunksAt(int x0, int y0, int z0, int x1, int y1, int z1);
    bool hasChunk(int x, int z);
    LevelChunk* getChunkAt(int x, int z);
    LevelChunk* getChunk(int x, int z);

	bool setTileAndDataNoUpdate(int x, int y, int z, int tile, int data);
    bool setTileNoUpdate(int x, int y, int z, int tile);

    int getData(int x, int y, int z);
	void setData(int x, int y, int z, int data);
    bool setDataNoUpdate(int x, int y, int z, int data);
    bool setTileAndData(int x, int y, int z, int tile, int data);
	void sendTileUpdated(int x, int y, int z);

    void lightColumnChanged(int x, int z, int y0, int y1);

    void setTileDirty(int x, int y, int z);
    void setTilesDirty(int x0, int y0, int z0, int x1, int y1, int z1);

    const Material* getMaterial(int x, int y, int z);

	void loadPlayer(Player* player, bool doAddPlayer);

	void swap(int x1, int y1, int z1, int x2, int y2, int z2);

    void updateNeighborsAt(int x, int y, int z, int tile);

    int getHeightmap(int x, int z);
	BiomeSource* getBiomeSource();
	Biome* getBiome(int x, int z);

	int getRawBrightness(int x, int y, int z);
	int getRawBrightness(int x, int y, int z, bool propagate);
    float getBrightness(int x, int y, int z);
    int getBrightness(const LightLayer& layer, int x, int y, int z);
    void setBrightness(const LightLayer& layer, int x, int y, int z, int brightness);
    void updateLightIfOtherThan(const LightLayer& layer, int x, int y, int z, int expected);

	int getLightsToUpdate();
	bool updateLights();
	void setUpdateLights(bool doUpdate);
	void updateLight(const LightLayer& layer, int x0, int y0, int z0, int x1, int y1, int z1);
	void updateLight(const LightLayer& layer, int x0, int y0, int z0, int x1, int y1, int z1, bool join);

    //HitResult clip(const Vec3& a, const Vec3& b);
    HitResult clip(const Vec3& a, const Vec3& b, bool liquid = false, bool solidOnly = false);

    bool addEntity(Entity* e);
    void removeEntity(Entity* e);
	void removePlayer( Player* player );
    //void removeEntityImmediately(Entity* e);
	//void removeAllPendingEntityRemovals();
	Entity* getEntity(int entityId);
	Mob* getMob(int entityId);

	Biome::MobSpawnerData getRandomMobSpawnAt(const MobCategory& mobCategory, int x, int y, int z);

	void addListener(LevelListener* listener);
    void removeListener(LevelListener* listener);

	void dispatchEntityData(Entity* e);

	std::vector<AABB> boxes;
	std::vector<AABB>& getCubes(const Entity* source, const AABB& box);

    bool isDay();
    float getTimeOfDay(float a);

	float getSunAngle(float a);
	int getSkyDarken(float a);

	Vec3 getFogColor(float a);
    Vec3 getCloudColor(float a);
    Vec3 getSkyColor(Entity* source, float a);

	bool canSeeSky(int x, int y, int z);
	int getLightDepth(int x, int z);
    float getStarBrightness(float a);
	bool updateSkyBrightness();
	bool isSkyLit(int x, int y, int z);

    void tickEntities();
	virtual void tick();
    void tick(Entity* e);
    void tick(Entity* e, bool actual);
	bool tickPendingTicks(bool force);
	void animateTick(int xt, int yt, int zt);
    void addToTickNextTick(int x, int y, int z, int tileId, int tickDelay);

	bool isUnobstructed(const AABB& aabb);
	float getSeenPercent(const Vec3& center, const AABB& bb);

	void explode(Entity* source, float x, float y, float z, float r);
	void explode(Entity* source, float x, float y, float z, float r, bool fire);

    bool containsAnyLiquid(const AABB& box);
    bool containsFireTile(const AABB& box);
	bool containsMaterial(const AABB& box, const Material* material);
    bool containsLiquid(const AABB& box, const Material* material);

	bool checkAndHandleWater(const AABB& box, const Material* material, Entity* e);
    void extinguishFire(int x, int y, int z, int face);

	//void addEntities(const EntityList& list);
	//void removeEntities(const EntityList& list);
	//void ensureAdded(Entity* entity);
	EntityList& getEntities(Entity* except, const AABB& bb);
	const EntityList& getAllEntities();

	TileEntity* getTileEntity(int x, int y, int z);
	void setTileEntity(int x, int y, int z, TileEntity* tileEntity);
	void removeTileEntity(int x, int y, int z);
	void tileEntityChanged(int x, int y, int z, TileEntity* te);

	void prepare();
	bool isNew() { return _isNew; }

	int getSeaLevel();
    
	bool mayPlace(int tileId, int x, int y, int z, bool ignoreEntities, unsigned char face);
	bool mayInteract(Player* player, int xt, int yt, int zt);

	bool findPath(Path* path, Entity* from, Entity* to, float maxDist, bool canOpenDoors, bool avoidWater);
    bool findPath(Path* path, Entity* from, int xBest, int yBest, int zBest, float maxDist, bool canOpenDoors, bool avoidWater);

    bool getDirectSignal(int x, int y, int z, int dir);
    bool hasDirectSignal(int x, int y, int z);
    bool getSignal(int x, int y, int z, int dir);
	bool hasNeighborSignal(int x, int y, int z);

	Player* getNearestPlayer(Entity* source, float maxDist);
	Player* getNearestPlayer(float x, float y, float z, float maxDist);
	int getEntitiesOfType(int entityType, const AABB& bb, EntityList& list);
	int getEntitiesOfClass(int type, const AABB& bb, EntityList& list);
	int countInstanceOfType(int typeId);
	int countInstanceOfBaseType(int baseTypeId);
	
	// Not currently used in MC either but will perhaps be used later.
	virtual void updateSleepingPlayerList() {}
    long getTime();
    void setTime(long time);
    long getSeed();
    Pos getSharedSpawnPos();
    void setSpawnPos(Pos spawnPos);
	void setSpawnSettings(bool spawnEnemies, bool spawnFriendlies);

	ChunkSource* getChunkSource();
	LevelStorage* getLevelStorage();
    LevelData* getLevelData();

	void saveLevelData();
	//void savePlayerData();
	void saveGame();
	void loadEntities();

	void addParticle(const std::string& id, float x, float y, float z, float xd, float yd, float zd, int data = 0);
	void addParticle(ParticleType::Id id, float x, float y, float z, float xd, float yd, float zd, int data = 0);
	void playSound(Entity* entity, const std::string& name, float volume, float pitch);
	void playSound(float x, float y, float z, const std::string& name, float volume, float pitch);
    void levelEvent(Player* source, int type, int x, int y, int z, int data);
	void tileEvent(int x, int y, int z, int b0, int b1);
	void broadcastEntityEvent(Entity* e, char eventId);

	void awakenAllPlayers();

	void takePicture( TripodCamera* cam, Entity* e );
    /**
     * Sets the initial spawn, created this method so we could do a special
     * location for the demo version.
     */
	/*virtual*/ void setInitialSpawn();
	bool inRange(int x, int y, int z);
protected:
	void setZombieAi(std::vector<Zombie*>& zombies);
	/*virtual*/ void entityAdded(Entity* e);
	/*virtual*/ void entityRemoved(Entity* e);
	/*virtual*/ void tileUpdated(int x, int y, int z, int tile);
	void updateSkyDarken();

	virtual ChunkSource* createChunkSource();

private:
	void neighborChanged(int x, int y, int z, int type);
	//void saveAllChunks();
	void tickTiles();
public:
	bool instaTick;
	bool isClientSide;
	bool isGeneratingTerrain;
	int difficulty;
    AdventureSettings adventureSettings;

	int isNightMode();
	void setNightMode(bool isNightMode);

	EntityList entities;
	EntityMap entityIdLookup;
	TileEntityList tileEntities;
	TileEntityList pendingTileEntities;
	bool updatingTileEntities;
	PlayerList players;

	int skyDarken;
	bool noNeighborUpdate;

	Dimension* dimension;
	IRakNetInstance* raknetInstance;
	Random random;
protected:
	bool isFindingSpawn;

	ListenerList _listeners;
	ChunkSource* _chunkSource;
	LevelStorage* const levelStorage;
	LevelData levelData;

	bool allPlayersAreSleeping;

	bool _spawnFriendlies;
	bool _spawnEnemies;

	int _randValue;
	int _addend;
private:
	EntityList  _es;
	//EntityList  _entitiesToRemove;
	TickDataSet _tickNextTickSet;
	ChunkPosSet _chunksToPoll;
	LightUpdateList _lightUpdates;
	EntityMap _pendingEntityData;
	bool _updateLights;

	int  _maxRecurse;
	bool _isNew;
	bool _nightMode;
	PathFinder* _pathFinder;

	float _lastSavedPlayerTime;
	PendingList _pendingPlayerRemovals;
};

#endif /*NET_MINECRAFT_WORLD_LEVEL__Level_H__*/