Data Types Table

Type	Usual Size	Description
bool	0x1	Literally just bytes that only contain 0 or 1
byte	0x1	Normal Byte (0-255)
short	0x2	Normal Signed Short (-32768 - 32767)
int	0x4	Normal Signed Integer (-2147483648 - 2147483647)
long	0x8	Normal Signed Long (-9223372036854775808 - 9223372036854775807)
d-long	0x10	Double Long (you get the idea)
float	0x4	Floating Point Number (varies)
struct	0x??	Structures, varies in size
ptr	0x4	Pointer Address

Structs

NOTE: This is HIGHLY unfinished and rushed.

Descriptions suffixed with "(?)" means that I am unsure if that is the actual meaning or I haven't really looked into it. If that is the case then the descriptions may be a little weird since I pull them straight from the disassembly. :P

Hint: Add the offset 0x502500 to pointers in IDA to get the actual addresses

ItemInstance

(Max Size: ???)

Type	Offset	Description	Size
int	0x8	Item Amount	0x4
int	0xC	"Pop Time"?	0x4
int	0x10	Item Pointer	0x4
int?	0x14	CompoundTag containing NBT data	0x4
byte	0x18	Is Item Empty	0x1
int	0x1C	Damage/Data Value	0x4

*from reading the disassembly, it seems like this is probably a string

Item

(Max Size: ???)

Type	Offset	Description	Size
int	0x8	Item Amount	0x4
int	0xC	Max Stack Count	0x4
int	0x10	Max Damage Count	0x4
int?	0x14	Item Icon(?)	0x4
int?	0x18	Base Item Type(?)	0x4
byte	0x21	Is Stacked via Data Value	0x1
byte	0x22	Can Place in Offhand	0x1
int?	0x24	Crafting Remaining Item(?)	0x4
int?	0x48	Description ID(?)	0x4
int?	0x4C	Use Description ID(?)	0x4

InsomniaComponent

(Max Size: 0x10)

Type	Offset	Description	Size
ptr	0x0	Pointer to the LivingEntity this is related to	0x4
int	0x4	Ticks Since Last Sleep	0x4
float	0x8	??? (seems to always be 3.0, MAYBE amount of days?)	0x4
int	0xC	Ticks For Insomnia To Occur	0x4

Inventory

(Max Size: ???)

Type	Offset	Description	Size
int	0x8	Items Vector Start Address(?)	0x4
int	0x38	???	0x4
int	0x3C	Max Slots Count	0x4
int	0x40	???	0x4
int	0x44	???	0x4
int	0x6C	Selected Slot Index	0x4

Level

(Max Size: ???)

Type	Offset	Description	Size
ptr	0x148	ClientChunkCache Pointer	0x4
ptr	0x14C	LevelStorage Pointer	0x4
ptr	0x154	LevelData Pointer	0x4

ClientChunkCache

(Max Size: ???)

Type	Offset	Description	Size

LevelChunk

(Max Size: ???)

Type	Offset	Description	Size
ptr	0x0	Biomes Pointer	0x4
ptr	0xC	ElementStorage Pointer	0x4
ptr	0x194	Current Level Pointer	0x4
ptr	0x1A8	HeightMap Pointer	0x4
int	0x1B8	Chunk Pos X	0x4
int	0x1BC	Chunk Pos Z	0x4
bool	0x1C0	Has Gaps To Check(?)	0x1
int	0x1C4	Biome Present Flag(?)	0x4
int	0x1C8	Block Entities (pointer??? idk)	0x4
byte	0x1ED	Is Ready(???)	0x1
byte	0x1EE	Is Unsaved	0x1
byte	0x1EF	???	0x1
byte	0x1F0	Last Save Had Entities(?)	0x1
long	0x200	Last Save Time	0x8
int	0x20C	Lowest Heightmap	0x4
long	0x210	Inhabited Time	0x8
int	0x228	Chunk Version	0x4
bool	0x241	Has Lighting Been Dropped(?)	0x1

LevelData

(Max Size: ???)

Type	Offset	Description	Size
long	0x0	World Seed	0x8
bool	0x81	Hardcore Mode	0x1
bool	0x82	Commands Allowed	0x1
bool	0x83	Initialized	0x1
int	0x84	Difficulty	0x4
bool	0x88	Difficulty Locked	0x1
int	0xA4	Cloud Height	0x4
bool	0xA8	Using New Sea Level	0x1
bool	0xA9	Has been in Creative Previously	0x1
bool	0xAA	Has Bonus Chest	0x1
int	0xAC	XZ Size	0x4
int	0xB0	Nether Scale	0x4

CMinecraftApp

(Max Size: 0x690)

Address: 0x10A2AFC0

Type	Offset	Description	Size
bool	0x184	Is Game Started	0x1
byte	0x185	=== Unused ===	0x1
bool	0x186	Is App Paused	0x1
int	0x1C0	Gamemode(?)	0x4
bool	0x1C4	Load Saves from Folder	0x1
int	0x1CC	Disconnection Reason	0x4
bool	0x268	Live Link Required(?)	0x1
byte	0x42D	Player Colour 1(?)	0x1
byte	0x42E	Player Colour 2(?)	0x1
byte	0x42F	Player Colour 3(?)	0x1
byte	0x430	Player Colour 4(?)	0x1
byte	0x431	Player Colour 5(?)	0x1
byte	0x432	Player Colour 6(?)	0x1
byte	0x433	Player Colour 7(?)	0x1
byte	0x434	Player Colour 8(?)	0x1
bool	0x62C	Reset The Nether(?)	0x1
bool	0x62D	Reset The End(?)	0x1
int	0x630	Current Texture Pack ID	0x4
int	0x68C	Previously-Played Minigame ID	0x4

Minecraft

(Max Size: ???)

Pointer: 0x109CD8E4

Type	Offset	Description	Size
ptr?	0x104	??? (Something to do with fonts)	0x4
ptr	0x144	'Gui' Pointer	0x4
ptr	0x160	'TexturePackRepository' Pointer	0x4
ptr	0x24C	'Minigame' Pointer	0x4
ptr	0x250	'ClientMasterGameMode' Pointer	0x4

Entity

(Max Size: 0x350)

Type	Offset	Description	Size
int	0xC	Entity ID	0x4
struct	0x48	Duplicate of 0x54(?)	0xC
struct	0x54	Current Position (BlockPos)	0xC
ptr	0xF0	Current Entity Riding Pointer	0x4
ptr	0xF8	Current Level Pointer	0x4
float	0x1D8	Step Height	0x4
bool	0x1EC	Is in Water	0x1
bool	0x1ED	Is Head in Water	0x1
int	0x1F0	Invulnerability Frames in Ticks	0x4
bool	0x1F5	Is Immune to Fire	0x1
int	0x1F8	???	0x4
ptr?	0x26C	Display Name Pointer (i think)	0x4
ptr?	0x348	LivingEntity Pointer(???, could be wrong)	0x4

LivingEntity

Inherits Entity (Max Size: 0x5F0)

Type	Offset	Description	Size
int	0x3BC	Attack Strength Ticker(?)	0x4
int	0x3E0	Body Rotation	0x4
int	0x3E4	Duplicate of 0x3E0(?)	0x4
int	0x3E8	Head Rotation	0x4
int	0x3EC	Duplicate of 0x3E8(?)	0x4
bool	0x4A4	Currently Jumping	0x1
ptr	0x4A8	'InsomniaComponent' Pointer	0x4

Player

Inherits LivingEntity
(Max Size: 0x868)

Type	Offset	Description	Size
ptr	0x5F0	'Inventory' Pointer	0x4
ptr	0x600	InventoryMenu Pointer	0x4
ptr?	0x604	Current Container Interacting With	0x4
struct	0x608	'FoodData' Structure	0x14
bool	0x6C0	Is Sleeping	0x1
int	0x6C8	Sleeping Timer (max 0x64)	0x4
int	0x6CC	Death Fade Timer	0x4
int?	0x6E0	Respawn Position	0x4?
bool	0x6E4	Is Respawn Forced	0x1
struct	0x70C	'Abilities' Structure	0x10
int	0x71C	Current XP Level	0x4
int	0x720	Current Raw XP Amount	0x4
float	0x724	Current XP Bar Fullness	0x4
int?	0x728	???	0x4
int?	0x72C	???	0x4
int	0x730	Enchantment Seed	0x4
float	0x734	Air Speed (can be modified, default is usually 0.02)	0x4
ptr	0x738	'ItemCooldowns' Pointer	0x4
int?	0x73C	???	0x4
bool	0x760	IsReducedDebugInfo(???)	0x1
byte[]	0x761	???	0x3
ptr?	0x764	Current Held Item	0x4
ptr?	0x768	Current Held Item 2(?)	0x4
int?	0x76C	Something to do with "hand slots"	0x4
int?	0x770	Something to do with "hand slots"	0x4
byte	0x781	???	0x1
byte[]	0x782	???	0x2
d-long	0x784	UUID	0x10
d-long	0x798	UUID (Duplicate? I'd rely on the previous one though)	0x10
int	0x7D8	Skin ID from Default Skin Pack (1 = steve, 2 = tennis steve, etc.) (Max 0x12)	0x4
int	0x7DC	Current Equipped Skin ID (custom skins are in hex and ORed with 0x80000000)	0x4
int	0x7E0	Current Equipped Cape ID (same format as skin id)	0x4
int	0x7E4	Player Colour Index (Max 0x7, idk why it isn't just a byte lmao)	0x4
int	0x7E8	Unused(?)	0x4
byte	0x7EC	Something about Minigames? look into 0x0270F0BC	0x1
int	0x7F0	Something about Minigame Points? look into 0x027112DC	0x4
int	0x7F4	Something about Minigame Checkpoints (glide?)? look into 0x02711638	0x4
byte	0x7F8	???	0x1
byte[]	0x7F9	???	0x3
int	0x7FC	'Player Privileges'	0x4
int	0x800	AdditionalModelParts(?) see 0x02728EC8	0x4
byte	0x804	Related to 0x800, see 0x0272B9D0	0x1
byte	0x805	Related to 0x800, see 0x0272B9D8	0x1
byte[]	0x806	???	0x2
int	0x808	Something related to round ending/camera??? look into 0x0270F76C	0x4
ptr(?)	0x80C	Current Entity Spectating	0x4
int	0x810	Something related to 0x80C and camera? look into 0x0272BDE0	0x4
bool	0x814	Is Position Locked	0x1
bool	0x815	Able to take Collision Damage from Gliding	0x1
byte[]	0x816	Unused(?)	0x2
float	0x818	Lift Force Modifier(?)	0x4
int	0x81C	Unused(?)	0x4
float	0x820	dupe of 0x120(?????) HIGHLY unsure, only ever mentioned here: 0x0270F1A0	0x4
int	0x824	Unused(?)	0x4
int	0x828	Collision Box Shape (0 is default, 1 is small (for spectators), 2 is none (buggy!))	0x4
byte	0x82C	Unused(?)	0x1
byte[]	0x82D	Unused(?)	0x3
byte[]	0x830	Unused(?)	0xC
byte	0x83C	Glide Ring Score Sound Variation (only 0 and 1 seem to be used)	0x1
byte[]	0x83D	Unused(?)	0x3
float	0x840	Used for Calculating "Flapping" (like when running while jumping in the air)	0x4
float	0x844	Also used for Calculating "Flapping"	0x4
float	0x848	Duplicate of 0x844	0x4
float	0x84C	Duplicate of 0x840	0x4
float	0x850	Again, used for "flapping"	0x4
float	0x854	Underwater Light Level	0x4
float	0x858	Underwater Vision Scale	0x4
bool	0x85C	Has Eaten Dried Kelp Before (used for Castaway achievement)	0x1
byte/bool	0x85D	Something to do with "Sleep with the Fishies" achievement	0x1
byte	0x85E	???	0x1
byte	0x85F	???	0x1
int	0x860	???	0x4
int	0x864	???	0x4

FoodData

(Max Size: 0x14)

Type	Offset	Description	Size
int	0x0	Current Hunger Amount	0x4
float	0x4	Current Saturation	0x4
int	0x8	Current Exhaustion	0x4
int	0xC	???	0x4
int	0x10	Last Hunger Amount	0x4

FoodItem

(Max Size: 0x8C)

Type	Offset	Description	Size
bool	0x80	Is Meat (used for feeding wolves)	0x1
bool	0x81	Can Eat Even If Full?	0x1
bool	0x82	Faster Eat Duration (dried kelp only)	0x1
byte	0x83	Unused	0x1

Player Privileges

(Max Size: 0x4)

Bit Position	Description
3	Can attack players
4	"Moderator"
5	"Can Fly"
6	"Disable Exhaustion"
7	"Invisible"
8	"Invulnerable"
10	Can attack animals

Abilities

(Max Size: 0x10)

Type	Offset	Description	Size
bool	0x0	Is Invulnerable (doesn't seem to work)	0x1
bool	0x1	Currently Flying	0x1
bool	0x2	Can Fly (not related to the host permission)	0x1
bool	0x3	Can Use Command Blocks	0x1
bool	0x4	??? (seems to always be set to 1)	0x1
byte[]	0x5	Unused	0x3
float	0x8	Current Flying Speed (doesn't seem to work)	0x4
float	0xC	Current Walking Speed (only changes FOV)	0x4

BlockPos

(Max Size: 0xC)

Type	Offset	Description	Size
int	0x0	X Position	0x4
int	0x4	Y Position	0x4
int	0x8	Z Position	0x4