Initial commit

Minecraft.World/LevelChunk.h

@@ -0,0 +1,260 @@
+#pragma once
+using namespace std;
+
+class DataLayer;
+class TileEntity;
+class Random;
+class ChunkSource;
+#include "SparseLightStorage.h"
+#include "CompressedTileStorage.h"
+#include "SparseDataStorage.h"
+
+#include "LightLayer.h"
+#include "Entity.h"
+#include "Level.h"
+
+#define SHARING_ENABLED
+class TileCompressData_SPU;
+
+#if 0//__PSVITA__
+#define _ENTITIES_RW_SECTION
+#endif
+
+class LevelChunk
+{
+	friend class TileCompressData_SPU;
+	friend class LevelRenderer;
+public:
+	byteArray biomes; // 4J Stu - Made public
+
+	// 4J Stu - No longer static in 1.8.2
+	const int ENTITY_BLOCKS_LENGTH;
+	static const int BLOCKS_LENGTH = Level::CHUNK_TILE_COUNT;	// 4J added
+
+    static bool touchedSky;
+
+	enum EColumnFlag
+	{
+		eColumnFlag_recheck = 1,
+		eColumnFlag_biomeOk = 2,
+		eColumnFlag_biomeHasSnow = 4,
+		eColumnFlag_biomeHasRain = 8,
+	};
+
+//    byteArray blocks;
+	// 4J - actual storage for blocks is now private with public methods to access it
+private:
+	CompressedTileStorage *lowerBlocks; // 0 - 127
+	CompressedTileStorage *upperBlocks; // 128 - 255
+public:
+	bool isRenderChunkEmpty(int y);
+	void setBlockData(byteArray data);	// Set block data to that passed in in the input array of size 32768
+	void getBlockData(byteArray data);	// Sets data in passed in array of size 32768, from the block data in this chunk
+	int getBlocksAllocatedSize(int *count0, int *count1, int *count2, int *count4, int *count8);
+
+    bool loaded;
+	unsigned char rainHeights[16*16];		// 4J - optimisation brought forward from 1.8.2 (was int arrayb in java though)
+	unsigned char columnFlags[16*8];		// 4J - lighting update brought forward from 1.8.2, was a bool array but now mixed with other flags in our version, and stored in nybbles
+    Level *level;
+
+	// 4J - actual storage for data is now private with public methods to access it
+private:
+	SparseDataStorage *lowerData; // 0 - 127
+	SparseDataStorage *upperData; // 128 - 255
+public:
+	void setDataData(byteArray data);		// Set data to that passed in in the input array of size 32768
+	void getDataData(byteArray data);		// Sets data in passed in array of size 16384, from the data in this chunk
+
+//    DataLayer *data;
+private:
+	// 4J - actual storage for sky & block lights is now private with new methods to be able to access it.
+
+	SparseLightStorage *lowerSkyLight; // 0 - 127
+	SparseLightStorage *upperSkyLight; // 128 - 255
+	SparseLightStorage *lowerBlockLight; // 0 - 127
+	SparseLightStorage *upperBlockLight; // 128 - 255
+public:
+	void getSkyLightData(byteArray data);	// Get a byte array of length 16384 ( 128 x 16 x 16 x 0.5 ), containing sky light data. Ordering same as java version.
+	void getBlockLightData(byteArray data);	// Get a byte array of length 16384 ( 128 x 16 x 16 x 0.5 ), containing block light data. Ordering same as java version.
+	void setSkyLightData(byteArray data);	// Set sky light data to data passed in input byte array of length 16384. This data must be in original (java version) order
+	void setBlockLightData(byteArray data);	// Set block light data to data passed in input byte array of length 16384. This data must be in original (java version) order
+	void setSkyLightDataAllBright();							// Set sky light data to be all fully lit
+	bool isLowerBlockStorageCompressed();
+	int isLowerBlockLightStorageCompressed();
+	int isLowerDataStorageCompressed();
+
+	void writeCompressedBlockData(DataOutputStream *dos);
+	void writeCompressedDataData(DataOutputStream *dos);
+	void writeCompressedSkyLightData(DataOutputStream *dos);
+	void writeCompressedBlockLightData(DataOutputStream *dos);
+
+	void readCompressedBlockData(DataInputStream *dis);
+	void readCompressedDataData(DataInputStream *dis);
+	void readCompressedSkyLightData(DataInputStream *dis);
+	void readCompressedBlockLightData(DataInputStream *dis);
+
+    byteArray heightmap;
+    int minHeight;
+    int x, z;
+private:
+	bool hasGapsToCheck;
+public:
+
+    unordered_map<TilePos, shared_ptr<TileEntity>, TilePosKeyHash, TilePosKeyEq> tileEntities;
+    vector<shared_ptr<Entity> > **entityBlocks;
+	
+	static const int sTerrainPopulatedFromHere		= 2;
+	static const int sTerrainPopulatedFromW			= 4;
+	static const int sTerrainPopulatedFromS			= 8;
+	static const int sTerrainPopulatedFromSW		= 16;
+	static const int sTerrainPopulatedAllAffecting	= 30;			// All the post-processing that can actually place tiles in this chunk are complete
+	static const int sTerrainPopulatedFromNW		= 32;		
+	static const int sTerrainPopulatedFromN			= 64;
+	static const int sTerrainPopulatedFromNE		= 128;
+	static const int sTerrainPopulatedFromE			= 256;
+	static const int sTerrainPopulatedFromSE		= 512;
+	static const int sTerrainPopulatedAllNeighbours	= 1022;			// The post-processing passes of all neighbours to this chunk are complete
+	static const int sTerrainPostPostProcessed		= 1024;			// This chunk has been post-post-processed, which is only done when all neighbours have been post-processed
+
+    short terrainPopulated;			// 4J - changed from bool to bitfield within short
+	short *serverTerrainPopulated;	// 4J added
+
+	void setUnsaved(bool unsaved); // 4J added
+protected:
+	// 4J Stu - Stopped this being private so we can add some more logic to it
+    bool m_unsaved;
+
+public:
+    bool dontSave;
+    bool lastSaveHadEntities;
+#ifdef SHARING_ENABLED
+	bool sharingTilesAndData;						// 4J added
+#endif
+	bool emissiveAdded;								// 4J added
+	void stopSharingTilesAndData();					// 4J added
+	virtual void reSyncLighting();					// 4J added
+	void startSharingTilesAndData(int forceMs = 0);	// 4J added
+	__int64 lastUnsharedTime;						// 4J added
+    __int64 lastSaveTime;
+	bool seenByPlayer;
+
+#ifdef _LARGE_WORLDS
+	bool m_bUnloaded;
+	CompoundTag *m_unloadedEntitiesTag;
+#endif
+
+	//static const int LIGHT_CHECK_MAX_POS = NUM_SECTIONS * 16 * 16;
+private:
+	int checkLightPosition;
+
+public:
+	virtual void init(Level *level, int x, int z);
+    LevelChunk(Level *level, int x, int z);
+    LevelChunk(Level *level, byteArray blocks, int x, int z);
+	LevelChunk(Level *level, int x, int z, LevelChunk *lc);
+	~LevelChunk();
+
+    virtual bool isAt(int x, int z);
+
+    virtual int getHeightmap(int x, int z);
+	int getHighestSectionPosition();
+    virtual void recalcBlockLights();
+
+    virtual void recalcHeightmapOnly();
+
+    virtual void recalcHeightmap();
+
+    virtual void lightLava();
+
+private:
+    void lightGaps(int x, int z);
+	// 4J - changes for lighting brought forward from 1.8.2
+public:
+	void recheckGaps(bool bForce = false);	// 4J - added parameter, made public
+private:
+    void lightGap(int x, int z, int source);
+	void lightGap(int x, int z, int y1, int y2);
+
+    void recalcHeight(int x, int yStart, int z);
+
+public:
+	virtual int getTileLightBlock(int x, int y, int z);
+    virtual int getTile(int x, int y, int z);
+    virtual bool setTileAndData(int x, int y, int z, int _tile, int _data);
+    virtual bool setTile(int x, int y, int z, int _tile);
+    virtual int getData(int x, int y, int z);
+    virtual bool setData(int x, int y, int z, int val, int mask, bool *maskedBitsChanged);		// 4J added mask
+    virtual int getBrightness(LightLayer::variety layer, int x, int y, int z);
+	virtual void getNeighbourBrightnesses(int *brightnesses, LightLayer::variety layer, int x, int y, int z);	// 4J added
+    virtual void setBrightness(LightLayer::variety layer, int x, int y, int z, int brightness);
+    virtual int getRawBrightness(int x, int y, int z, int skyDampen);
+    virtual void addEntity(shared_ptr<Entity> e);
+    virtual void removeEntity(shared_ptr<Entity> e);
+    virtual void removeEntity(shared_ptr<Entity> e, int yc);
+    virtual bool isSkyLit(int x, int y, int z);
+    virtual void skyBrightnessChanged();
+    virtual shared_ptr<TileEntity> getTileEntity(int x, int y, int z);
+    virtual void addTileEntity(shared_ptr<TileEntity> te);
+    virtual void setTileEntity(int x, int y, int z, shared_ptr<TileEntity> tileEntity);
+    virtual void removeTileEntity(int x, int y, int z);
+    virtual void load();
+    virtual void unload(bool unloadTileEntities) ;	// 4J - added parameter
+#ifdef _LARGE_WORLDS
+	virtual bool isUnloaded();
+#endif
+    virtual void markUnsaved();
+    virtual void getEntities(shared_ptr<Entity> except, AABB *bb, vector<shared_ptr<Entity> > &es);
+	virtual void getEntitiesOfClass(const type_info& ec, AABB *bb, vector<shared_ptr<Entity> > &es);
+    virtual int countEntities();
+    virtual bool shouldSave(bool force);
+    virtual int getBlocksAndData(byteArray *data, int x0, int y0, int z0, int x1, int y1, int z1, int p, bool includeLighting = true);	// 4J - added includeLighting parameter
+	static void tileUpdatedCallback(int x, int y, int z, void *param, int yparam);		// 4J added
+    virtual int setBlocksAndData(byteArray data, int x0, int y0, int z0, int x1, int y1, int z1, int p, bool includeLighting = true);	// 4J - added includeLighting parameter
+	virtual bool testSetBlocksAndData(byteArray data, int x0, int y0, int z0, int x1, int y1, int z1, int p);	// 4J added
+	virtual void setCheckAllLight();
+
+    virtual Random *getRandom(__int64 l);
+    virtual bool isEmpty();
+    virtual void attemptCompression();
+
+#ifdef SHARING_ENABLED
+	static CRITICAL_SECTION m_csSharing;	// 4J added
+#endif
+	// 4J  added
+#ifdef _ENTITIES_RW_SECTION
+	static CRITICAL_RW_SECTION m_csEntities;	// AP - we're using a RW critical so we can do multiple reads without contention
+#else
+	static CRITICAL_SECTION m_csEntities;
+#endif
+	static CRITICAL_SECTION m_csTileEntities;	// 4J  added
+	static void staticCtor();
+	void checkPostProcess(ChunkSource *source, ChunkSource *parent, int x, int z);
+	void checkChests(ChunkSource *source, int x, int z );		// 4J added
+	int getTopRainBlock(int x, int z); // 4J - optimisation brought forward from 1.8.2
+	void tick();	// 4J - lighting change brought forward from 1.8.2
+	ChunkPos *getPos();
+	bool isYSpaceEmpty(int y1, int y2);
+	virtual Biome *getBiome(int x, int z, BiomeSource *biomeSource);
+	byteArray getBiomes();
+	void setBiomes(byteArray biomes);
+	bool biomeHasRain(int x, int z);	// 4J added
+	bool biomeHasSnow(int x, int z);	// 4J added	
+private:
+	void updateBiomeFlags(int x, int z);	// 4J added	
+public:
+	void compressLighting();		// 4J added
+	void compressBlocks();			// 4J added
+	void compressData();			// 4J added
+	int getHighestNonEmptyY();
+	byteArray getReorderedBlocksAndData(int x, int y, int z, int xs, int &ys, int zs);
+	static void reorderBlocksAndDataToXZY(int y0, int xs, int ys, int zs, byteArray *data);
+#ifdef LIGHT_COMPRESSION_STATS
+	int getBlockLightPlanesLower() { return lowerBlockLight->count; }
+	int getSkyLightPlanesLower() { return lowerSkyLight->count; }
+	int getBlockLightPlanesUpper() { return upperBlockLight->count; }
+	int getSkyLightPlanesUpper() { return upperSkyLight->count; }
+#endif
+#ifdef DATA_COMPRESSION_STATS
+	int getDataPlanes() { return data->count; }
+#endif
+};