world_define

const (
	// KeyVersion holds a single byte of data with the version of the chunk.
	KeyVersion = ',' // 2c
	// KeyVersionOld was replaced by keyVersion. It is still used by vanilla to check compatibility, but vanilla no
	// longer writes this tag.
	KeyVersionOld = 'v' // 76
	// KeyBlockEntities holds n amount of NBT compound tags appended to each other (not a TAG_List, just appended). The
	// compound tags contain the position of the block entities.
	KeyBlockEntities = '1' // 31
	// KeyEntitiesOld holds n amount of NBT compound tags appended to each other (not a TAG_List, just appended). The
	// compound tags contain the position of the entities.
	KeyEntitiesOld = '2' // 32
	// KeyPendingScheduledTicks holds an NBT structure containing all scheduled
	// ticks that were pending in the chunk.
	KeyPendingScheduledTicks = '3'
	// keyFinalisation contains a single LE int32 that indicates the state of generation of the chunk. If 0, the chunk
	// needs to be ticked. If 1, the chunk needs to be populated and if 2 (which is the state generally found in world
	// saves from vanilla), the chunk is fully finalised.
	KeyFinalisation = '6' // 36
	// key3DData holds 3-dimensional biomes for the entire chunk.
	Key3DData = '+' // 2b
	// key2DData is no longer used in worlds with world height change. It was replaced by key3DData in newer worlds
	// which has 3-dimensional biomes.
	Key2DData = '-' // 2d
	// keyChecksum holds a list of checksums of some sort. It's not clear of what data this checksum is composed or what
	// these checksums are used for.
	KeyChecksums = ';' // 3b

	KeyEntityIdentifiers = "digp"
	KeyEntity            = "actorprefix"

	KeyChunkTimeStamp       = 'T'              // time stamp
	KeyDeltaUpdateTimeStamp = "dutsp"          // delta update time stamp prefix
	KeyDeltaUpdate          = "dup"            // delta update prefix
	KeyBlobHash             = "blobhashprefix" // blob hash prefix
)

const (
	KeyAutonomousEntities = "AutonomousEntities"
	KeyOverworld          = "Overworld"
	KeyMobEvents          = "mobevents"
	KeyBiomeData          = "BiomeData"
	KeyScoreboard         = "scoreboard"
	KeyLocalPlayer        = "~local_player"
)

const (
	FinalisationNeedsTicked = iota
	FinalisationNeedsPopulated
	FinalisationGenerated
)

const ChunkVersion = 41

const (
	KeySubChunkData = '/' // 2f
)