diff --git a/LiteLoader/include/liteloader/Offset.h b/LiteLoader/include/liteloader/Offset.h
new file mode 100644
index 0000000..d34afb9
--- /dev/null
+++ b/LiteLoader/include/liteloader/Offset.h
@@ -0,0 +1,158 @@
+#pragma once
+#include <cstdint>
+#include <utility>
+
+/*
+ * 偏移量命名规则：使用的文件名_函数名_(如有多个)第几个使用或者知道的成员名
+ * */
+
+namespace ll{
+    namespace offset{
+
+        // ->header/llapi/mc
+
+        // Null
+        constexpr uint64_t ATTRIBUTE_getName = 0x8;
+        // BaseCommandBlock::_setCommand a4 is Command
+        constexpr uint64_t BASECOMMANDBLOCK_getCommand = 0x38;
+        // ItemStackBase::init(ItemStackBase*, BlockLegacy *, int) Line14
+        constexpr uint64_t BLOCKLEGAC_getBlockItemId = 0x10C;
+        // LevelChunk::_removeCallbacks Line28
+        constexpr uint64_t BLOCKLEGAC_getBlockEntityType = 0xA8;
+        // Null
+        constexpr uint64_t BLOCKSOURCE_getDimension = 0x20;
+        // BegGoal::canUse Line6
+        constexpr uint64_t BLOCKSOURCE_getDimensionConst = 0x328;
+        // DayLockCommand::execute Line91
+        constexpr uint64_t COMMANDOUTPUT_getSuccessCount = 0x28;
+        // Null
+        constexpr uint64_t COMPOUNDTAGVARIANT_getTagType = 0x28;
+        // ExplorationMapFunction::apply Line57
+        constexpr uint64_t DIMENSION_getBlockSourceFromMainChunkSource = 0x48;
+        // Null
+        constexpr uint64_t DIMENSION_getHeight = 0xCA;
+        // Player::checkSpawnBlock Line19
+        constexpr uint64_t DIMENSION_getDimensionId = 0xC0;
+        // ItemRegistry::registerItem Line25
+        constexpr uint64_t ITEM_getFullItemName = 0xD8;
+        // Null
+        constexpr uint64_t LEVEL_getSpawner = 0x7B0;
+        // CommandAreaFactory::_getArea Line156
+        constexpr uint64_t LEVELCHUNK_getLastTick = 0x90;
+        // lambda_b490644342a3912d59dc52eb79c3a67f_::operator() Line410
+        constexpr uint64_t MINECRAFT_getNetworkHandler = 0x18;
+        // mob::die Line83
+        constexpr uint64_t MOB_getDead = 0x73A;
+        // EffectCommand::execute Line247
+        constexpr uint64_t MOBEFFECT_getResourceName = 0x50;
+        // MobEffect::MobEffect Line43
+        constexpr uint64_t MOBEFFECT_getComponentName = 0x98;
+        // ScoreboardCommand::applyPlayerOperation Line186
+        constexpr uint64_t OBJECTIVE_getName = 0x40;
+        // Objective::serialize Line55
+        constexpr uint64_t OBJECTIVE_getDisplayName = 0x60;
+        // Null
+        constexpr uint64_t PACKET_OBJECTIVE_getDisplayName = 0x10;
+        // AddPlayerPacket::AddPlayerPacket Line58
+        constexpr uint64_t PLAYER_getDeviceId = 0x1EC0;
+        // Actor::onAboveBubbleColumn Line5 照抄的，不知行不行
+        constexpr uint64_t PLAYER_isFlying_1 = 0x8B4;
+        constexpr uint64_t PLAYER_isFlying_2 = 0x8B8;
+        constexpr uint64_t PLAYER_isFlying_3 = 0x914;
+        constexpr uint64_t PLAYER_isFlying_4 = 0x918;
+        // PropertiesSettings::PropertiesSettings Line550
+        constexpr uint64_t PROPERTIESSETTINGS_useOnlineAuthentication = 0x1A1;
+        // PropertiesSettings::PropertiesSettings Line518
+        constexpr uint64_t PROPERTIESSETTINGS_getLevelName = 0x20;
+        // Null
+        constexpr uint64_t RAKNET_getAdr = 0x8;
+        // ResourcePackRepository::_initializeWorldPackSource Line62
+        constexpr uint64_t RESOURCEPACKREPOSITORY_getPackSourceFactory = 0x170;
+        // ServerScoreboard::_unpackIdentityDefToScorePacket Line30~31 16+72
+        constexpr uint64_t SCOREBOARDIDENTITYREF_getIdentityType = 0x58;
+
+        // ->src/EventAPI
+
+        // Null
+        constexpr uint64_t EVENTAPI_PlayerInteractEntity_1 = 0x68;
+        // Null
+        constexpr uint64_t EVENTAPI_PlayerInteractEntity_2 = 0x70;
+        // Hopper::Hopper
+        constexpr uint64_t EVENTAPI_HopperSearchItem = 0x5;
+
+        // ->src/llapi/mc
+
+        // Null
+        constexpr uint64_t BIOMEAPI_getID = 0x78;
+        // Null
+        constexpr uint64_t BIOMEAPI_getName = 0x8;
+        // Null
+        constexpr uint64_t BLOCKAPI_getTileData = 0x8;
+        // Actor::_playFlySound Line7
+        constexpr uint64_t BLOCKAPI_getRuntimeId = 0x30;
+        // Null
+        constexpr uint64_t BLOCKLEGACYAPI_getRuntimeId = 0x80;
+        // Container::Container
+        constexpr uint64_t CONTAINERAPI_getTypeName= 0x8;
+        // Null
+        constexpr uint64_t GAMEMODEAPI_getPlayer= 0x8;
+        // Null
+        constexpr uint64_t HITRESULTAPI_getFacing= 0x1C;
+        // Null
+        constexpr uint64_t HITRESULTAPI_getPos= 0x2C;
+        // Null
+        constexpr uint64_t HITRESULTAPI_isHitLiquid= 0x50;
+        // Null
+        constexpr uint64_t HITRESULTAPI_getBlockPos= 0x20;
+        // Null
+        constexpr uint64_t HITRESULTAPI_getLiquidPos= 0x54;
+        // Null
+        constexpr uint64_t HITRESULTAPI_getLiquidFacing= 0x51;
+        // Player::take Line127
+        constexpr uint64_t ITEMACTORAPI_getItemStack= 0x620;
+        // ItemActor::NormalTick Line258
+        constexpr uint64_t ITEMACTORAPI_getDespawnTime = 0x6C4;
+        // ItemActor::NormalTick Line258 也许是？
+        constexpr uint64_t ITEMACTORAPI_getLatestSpawnTime = 0x6B0;
+        // Null
+        constexpr uint64_t ITEMSTACKAPI_getCount = 0x22;
+        // MovingBlockActor::load Line69
+        constexpr uint64_t LEVELAPI_getBlockPalettePtr = 0x7D0;
+        // ServerPlayer::isHostingPlayer
+        constexpr uint64_t PLAYERAPI_getNetworkIdentifier = 0x980;
+        // KickCommand::_kickPlayer Line116
+        constexpr uint64_t PLAYERAPI_getCertificate = 0xAB0;
+        // AddPlayerPacket::AddPlayerPacket Line59
+        constexpr uint64_t PLAYERAPI_getPlatform = 0x838;
+        // InventoryContainerModel::_getContainer  2928 + 176
+        constexpr uint64_t PLAYERAPI_getInventory = 0xC20;
+        // ServerNetworkHandler::_sendLevelData Line316
+        constexpr uint64_t PLAYERAPI_getSpawnPosition = 0x1C14;
+        // ServerNetworkHandler::_sendLevelData Line310
+        constexpr uint64_t PLAYERAPI_getSpawnDimension = 0x1C20;
+        // Null
+        constexpr uint64_t PLAYERAPI_getClientUUID = 0xAA0;
+        // ServerPlayer::sendNetworkPacket 参4
+        constexpr uint64_t PLAYERAPI_getClientSubId = 0xDC0;
+        // Null
+        constexpr uint64_t PLAYERAPI_crashClient = 0X38;
+        // Null
+        constexpr uint64_t PLAYERAPI_sendTransferPacket_port = 0X24;
+        // Null
+        constexpr uint64_t PLAYERAPI_sendTransferPacket_address = 0X28;
+        // Null
+        constexpr uint64_t PLAYERAPI_sendSetScorePacket_type = 0X30;
+        // Null
+        constexpr uint64_t PLAYERAPI_sendSetScorePacket_data = 0X38;
+        // Null
+        constexpr uint64_t PLAYERAPI_sendCommandRequestPacket_cmd = 0X30;
+        // Null
+        constexpr uint64_t RESOURCEPACKREPOSITORYAPI_setCustomResourcePackPath = 0x30;
+
+        // ->src/llapi/nbt
+
+        // Block::Block?
+        constexpr uint64_t COMPOUNDTAGAPI_fromBlock = 0x18;
+    }
+}
+
diff --git a/LiteLoader/include/llapi/HookAPI.h b/LiteLoader/include/llapi/HookAPI.h
index 49d05f1..dbdd12b 100644
--- a/LiteLoader/include/llapi/HookAPI.h
+++ b/LiteLoader/include/llapi/HookAPI.h
@@ -1,11 +1,15 @@
 #pragma once
-#include "Global.h"
-#include "utils/Hash.h"
-#include <ModUtils/ModUtils.h>
+
 #include <vector>
 #include <string>
 #include <thread>
 
+#include <ModUtils/ModUtils.h>
+#include <liteloader/Offset.h>
+
+#include "Global.h"
+#include "utils/Hash.h"
+
 // The core api of the hook function
 //__declspec(dllimport) int HookFunction(void* oldfunc, void** poutold, void* newfunc);
 // Used to get a server-defined specific function by name
diff --git a/LiteLoader/include/llapi/mc/Attribute.hpp b/LiteLoader/include/llapi/mc/Attribute.hpp
index 8b8526e..834ed47 100644
--- a/LiteLoader/include/llapi/mc/Attribute.hpp
+++ b/LiteLoader/include/llapi/mc/Attribute.hpp
@@ -12,7 +12,7 @@ class Attribute {
 #define AFTER_EXTRA
 public:
     inline class HashedString const & getName() const{
-        return dAccess<HashedString>(this, 8);
+        return dAccess<HashedString>(this, ll::offset::ATTRIBUTE_getName);
     }
 
 #undef AFTER_EXTRA
diff --git a/LiteLoader/include/llapi/mc/BaseCommandBlock.hpp b/LiteLoader/include/llapi/mc/BaseCommandBlock.hpp
index 79e0469..8c2cca2 100644
--- a/LiteLoader/include/llapi/mc/BaseCommandBlock.hpp
+++ b/LiteLoader/include/llapi/mc/BaseCommandBlock.hpp
@@ -13,7 +13,7 @@ class BaseCommandBlock {
 public:
     inline std::string const & getCommand() const{
         //BaseCommandBlock::_setCommand a4 is Command;
-        return dAccess<std::string>(this,56);
+        return dAccess<std::string>(this,ll::offset::BASECOMMANDBLOCK_getCommand);
     };
 #undef AFTER_EXTRA
 #ifndef DISABLE_CONSTRUCTOR_PREVENTION_BASECOMMANDBLOCK
diff --git a/LiteLoader/include/llapi/mc/BlockLegacy.hpp b/LiteLoader/include/llapi/mc/BlockLegacy.hpp
index 80c7a8a..ef85993 100644
--- a/LiteLoader/include/llapi/mc/BlockLegacy.hpp
+++ b/LiteLoader/include/llapi/mc/BlockLegacy.hpp
@@ -163,7 +163,7 @@ public:
 
     inline int getBlockItemId() const{
         //ItemStackBase::init(ItemStackBase *this, const struct BlockLegacy *a2, int a3) Line14
-        unsigned int id = dAccess<int>(this,268);//mID
+        unsigned int id = dAccess<int>(this,ll::offset::BLOCKLEGAC_getBlockItemId);//mID
         // unsigned int id = this->mID;
         if(id < 256u)
             return id;
@@ -176,7 +176,7 @@ public:
     }
     inline enum BlockActorType getBlockEntityType() const{
         // LevelChunk::_removeCallbacks Line28
-        return dAccess<BlockActorType>(this,168);
+        return dAccess<BlockActorType>(this,ll::offset::BLOCKLEGAC_getBlockEntityType);
         //return this->mBlockEntityType;
     };
 
diff --git a/LiteLoader/include/llapi/mc/BlockSource.hpp b/LiteLoader/include/llapi/mc/BlockSource.hpp
index 9c996a1..bc91453 100644
--- a/LiteLoader/include/llapi/mc/BlockSource.hpp
+++ b/LiteLoader/include/llapi/mc/BlockSource.hpp
@@ -22,7 +22,7 @@ public:
 // };
     LIAPI BlockInstance getBlockInstance(BlockPos);
     inline Dimension* getDimension() const{
-        return dAccess< Dimension*>(this, 32);
+        return dAccess< Dimension*>(this, ll::offset::BLOCKSOURCE_getDimension);
     }
     inline AutomaticID<class Dimension, int> getDimensionId() const{
         //Dimension::onBlockEvent Line24
@@ -42,7 +42,7 @@ public:
     }
     inline Dimension const & getDimensionConst() const{
         //BegGoal::canUse Line6
-        return dAccess<Dimension>(this,808);
+        return dAccess<Dimension>(this,ll::offset::BLOCKSOURCE_getDimensionConst);
     };
 //    inline short getHeightmap(class BlockPos const &bs) const{
 //        auto levelchunk = getChunkAt(bs);
diff --git a/LiteLoader/include/llapi/mc/CommandOutput.hpp b/LiteLoader/include/llapi/mc/CommandOutput.hpp
index 87cb5cd..392ac5c 100644
--- a/LiteLoader/include/llapi/mc/CommandOutput.hpp
+++ b/LiteLoader/include/llapi/mc/CommandOutput.hpp
@@ -23,13 +23,13 @@ public:
 
     inline int getSuccessCount() const{
         //DayLockCommand::execute Line91
-        return dAccess<int>(this,0x28);
+        return dAccess<int>(this,ll::offset::COMMANDOUTPUT_getSuccessCount);
     };
 
     inline void success(){
-        int successCount = dAccess<int>(this,0x28);
+        int successCount = dAccess<int>(this,ll::offset::COMMANDOUTPUT_getSuccessCount);
         ++successCount;
-        dAccess<int>(this,0x28) = successCount;
+        dAccess<int>(this,ll::offset::COMMANDOUTPUT_getSuccessCount) = successCount;
     };
 
     inline bool empty() const{
diff --git a/LiteLoader/include/llapi/mc/CompoundTagVariant.hpp b/LiteLoader/include/llapi/mc/CompoundTagVariant.hpp
index f3c6666..494fb86 100644
--- a/LiteLoader/include/llapi/mc/CompoundTagVariant.hpp
+++ b/LiteLoader/include/llapi/mc/CompoundTagVariant.hpp
@@ -12,7 +12,7 @@ class CompoundTagVariant {
 #define AFTER_EXTRA
 public:
     inline Tag::Type getTagType() {
-        return dAccess<Tag::Type, 40>(this);
+        return dAccess<Tag::Type, ll::offset::COMPOUNDTAGVARIANT_getTagType>(this);
     }
     inline Tag* asTag() {
         return (Tag*)this;
diff --git a/LiteLoader/include/llapi/mc/Dimension.hpp b/LiteLoader/include/llapi/mc/Dimension.hpp
index 31fd74e..b2073e0 100644
--- a/LiteLoader/include/llapi/mc/Dimension.hpp
+++ b/LiteLoader/include/llapi/mc/Dimension.hpp
@@ -22,15 +22,15 @@ class Dimension {
 public:
     inline BlockSource& getBlockSourceFromMainChunkSource() const{
         //ExplorationMapFunction::apply Line57
-        return *dAccess<BlockSource*>(this, 72);
+        return *dAccess<BlockSource*>(this, ll::offset::DIMENSION_getBlockSourceFromMainChunkSource);
     };
     inline int getHeight(){
-        return dAccess<int>(this,202);
+        return dAccess<int>(this,ll::offset::DIMENSION_getHeight);
     };
     inline AutomaticID<class Dimension, int> getDimensionId() const{
         //Player::moveSpawnView Line33
         //Player::checkSpawnBlock Line19
-        return dAccess<AutomaticID<Dimension,int>>(this,192);
+        return dAccess<AutomaticID<Dimension,int>>(this,ll::offset::DIMENSION_getDimensionId);
     };
     inline DimensionHeightRange const & getHeightRange() const{
         // 0为主世界，1为下界，2为末地
diff --git a/LiteLoader/include/llapi/mc/Item.hpp b/LiteLoader/include/llapi/mc/Item.hpp
index 1ebefdd..4a916ae 100644
--- a/LiteLoader/include/llapi/mc/Item.hpp
+++ b/LiteLoader/include/llapi/mc/Item.hpp
@@ -20,7 +20,7 @@ class Item {
 public:
     inline std::string const & getFullItemName() const{
         //ItemRegistry::registerItem Line25
-        return dAccess<std::string>(this,216);
+        return dAccess<std::string>(this,ll::offset::ITEM_getFullItemName);
     };
 #undef AFTER_EXTRA
 #ifndef DISABLE_CONSTRUCTOR_PREVENTION_ITEM
diff --git a/LiteLoader/include/llapi/mc/Level.hpp b/LiteLoader/include/llapi/mc/Level.hpp
index 00aad7c..1a83d51 100644
--- a/LiteLoader/include/llapi/mc/Level.hpp
+++ b/LiteLoader/include/llapi/mc/Level.hpp
@@ -143,7 +143,7 @@ public:
     }
 
     inline Spawner& getSpawner() const{
-        return *dAccess<std::unique_ptr<Spawner>>(this,1968).get();
+        return *dAccess<std::unique_ptr<Spawner>>(this,ll::offset::LEVEL_getSpawner).get();
     };
     
 #undef AFTER_EXTRA
diff --git a/LiteLoader/include/llapi/mc/LevelChunk.hpp b/LiteLoader/include/llapi/mc/LevelChunk.hpp
index 85f3595..469591f 100644
--- a/LiteLoader/include/llapi/mc/LevelChunk.hpp
+++ b/LiteLoader/include/llapi/mc/LevelChunk.hpp
@@ -42,7 +42,7 @@ struct HardcodedSpawningArea {
 public:
     struct Tick const & getLastTick() const{
         //CommandAreaFactory::_getArea Line156
-        return *dAccess<Tick*>(this, 144);
+        return *dAccess<Tick*>(this, ll::offset::LEVELCHUNK_getLastTick);
     };
     inline int getHeightmap(const ChunkBlockPos *pos){
         //LevelChunk::_lightingCallbacks Line31 应该是这样的
diff --git a/LiteLoader/include/llapi/mc/Minecraft.hpp b/LiteLoader/include/llapi/mc/Minecraft.hpp
index a54b823..5ca2e3a 100644
--- a/LiteLoader/include/llapi/mc/Minecraft.hpp
+++ b/LiteLoader/include/llapi/mc/Minecraft.hpp
@@ -14,7 +14,7 @@ class Minecraft {
 public:
     inline NetworkHandler & getNetworkHandler(){
         //lambda_b490644342a3912d59dc52eb79c3a67f_::operator() Line410
-        return dAccess<NetworkHandler>(this,24);
+        return dAccess<NetworkHandler>(this,ll::offset::MINECRAFT_getNetworkHandler);
     };
 #undef AFTER_EXTRA
 #ifndef DISABLE_CONSTRUCTOR_PREVENTION_MINECRAFT
diff --git a/LiteLoader/include/llapi/mc/Mob.hpp b/LiteLoader/include/llapi/mc/Mob.hpp
index 631885b..5b2adb5 100644
--- a/LiteLoader/include/llapi/mc/Mob.hpp
+++ b/LiteLoader/include/llapi/mc/Mob.hpp
@@ -28,7 +28,7 @@ public:
     }
     inline bool getDead(){
         //mob::die Line83
-        return dAccess<bool>(this,1850);
+        return dAccess<bool>(this,ll::offset::MOB_getDead);
     };
 
 #undef AFTER_EXTRA
diff --git a/LiteLoader/include/llapi/mc/MobEffect.hpp b/LiteLoader/include/llapi/mc/MobEffect.hpp
index f017165..191a834 100644
--- a/LiteLoader/include/llapi/mc/MobEffect.hpp
+++ b/LiteLoader/include/llapi/mc/MobEffect.hpp
@@ -53,11 +53,11 @@ public:
 
     inline std::string const & getResourceName() const{
         //EffectCommand::execute Line247
-        return dAccess<std::string>(this,80);
+        return dAccess<std::string>(this,ll::offset::MOBEFFECT_getResourceName);
     };
     inline HashedString const & getComponentName() const{
         //MobEffect::MobEffect Line43;
-        return dAccess<HashedString>(this,152);
+        return dAccess<HashedString>(this,ll::offset::MOBEFFECT_getComponentName);
     };
 
 #undef AFTER_EXTRA
diff --git a/LiteLoader/include/llapi/mc/Objective.hpp b/LiteLoader/include/llapi/mc/Objective.hpp
index 45aa346..91965de 100644
--- a/LiteLoader/include/llapi/mc/Objective.hpp
+++ b/LiteLoader/include/llapi/mc/Objective.hpp
@@ -14,14 +14,14 @@ class Objective {
 public:
     inline std::string getName(){
         //ScoreboardCommand::applyPlayerOperation Line186
-        return dAccess<std::string>(this, 64);
+        return dAccess<std::string>(this, ll::offset::OBJECTIVE_getName);
     };
 
     LIAPI bool setDisplay(const std::string& slotName, ObjectiveSortOrder sort);
 
     inline std::string const & getDisplayName() const{
         //Objective::serialize
-        return dAccess<std::string>(this,96);
+        return dAccess<std::string>(this,ll::offset::OBJECTIVE_getDisplayName);
     };
     
 #undef AFTER_EXTRA
diff --git a/LiteLoader/include/llapi/mc/Packet.hpp b/LiteLoader/include/llapi/mc/Packet.hpp
index d8bd2bb..ee06570 100644
--- a/LiteLoader/include/llapi/mc/Packet.hpp
+++ b/LiteLoader/include/llapi/mc/Packet.hpp
@@ -39,7 +39,7 @@ public:
 
     inline ServerPlayer* getPlayerFromPacket(ServerNetworkHandler* handler, NetworkIdentifier* netId)
     {
-        return handler->getServerPlayer(*netId, dAccess<char>(this, 16));
+        return handler->getServerPlayer(*netId, dAccess<char>(this, ll::offset::PACKET_OBJECTIVE_getDisplayName));
     }
     inline enum StreamReadResult _read(class ReadOnlyBinaryStream& binaryStream)
     {
diff --git a/LiteLoader/include/llapi/mc/Player.hpp b/LiteLoader/include/llapi/mc/Player.hpp
index c7f93ae..24f51c9 100644
--- a/LiteLoader/include/llapi/mc/Player.hpp
+++ b/LiteLoader/include/llapi/mc/Player.hpp
@@ -184,11 +184,13 @@ public:
     }
     inline std::string* getDeviceId(){
         //AddPlayerPacket::AddPlayerPacket Line58
-        return dAccess<std::string*>(this,7872);
+        return dAccess<std::string*>(this,ll::offset::PLAYER_getDeviceId);
     };
     inline bool isFlying(){
         //Actor::onAboveBubbleColumn Line5 照抄的，不知行不行
-        return (dAccess<int>(this,2228) == 1 || !dAccess<bool>(this,2232)) && (dAccess<int>(this, 2324) == 1 || !dAccess<bool>(this, 2328));
+        return (dAccess<int>(this,ll::offset::PLAYER_isFlying_1) == 1
+                || !dAccess<bool>(this,ll::offset::PLAYER_isFlying_2))
+                && (dAccess<int>(this, ll::offset::PLAYER_isFlying_3) == 1 || !dAccess<bool>(this, ll::offset::PLAYER_isFlying_4));
     };
     inline bool isHungry(){
         void* Player_HUNGER = dlsym("?HUNGER@Player@@2VAttribute@@B");
diff --git a/LiteLoader/include/llapi/mc/PropertiesSettings.hpp b/LiteLoader/include/llapi/mc/PropertiesSettings.hpp
index fa9de4e..f2bc672 100644
--- a/LiteLoader/include/llapi/mc/PropertiesSettings.hpp
+++ b/LiteLoader/include/llapi/mc/PropertiesSettings.hpp
@@ -13,11 +13,11 @@ class PropertiesSettings {
 public:
     inline bool useOnlineAuthentication(){
         //PropertiesSettings::PropertiesSettings Line550;
-        return dAccess<bool>(this, 417);
+        return dAccess<bool>(this, ll::offset::PROPERTIESSETTINGS_useOnlineAuthentication);
     }
     inline std::string getLevelName(){
         //PropertiesSettings::PropertiesSettings Line518
-        return dAccess<std::string>(this,32);
+        return dAccess<std::string>(this,ll::offset::PROPERTIESSETTINGS_getLevelName);
     }
 #undef AFTER_EXTRA
 #ifndef DISABLE_CONSTRUCTOR_PREVENTION_PROPERTIESSETTINGS
diff --git a/LiteLoader/include/llapi/mc/RakNet.hpp b/LiteLoader/include/llapi/mc/RakNet.hpp
index d2d03a6..7a5844c 100644
--- a/LiteLoader/include/llapi/mc/RakNet.hpp
+++ b/LiteLoader/include/llapi/mc/RakNet.hpp
@@ -41,7 +41,7 @@ namespace RakNet {
         RakPeer(RakPeer const&) = delete;
         RakPeer(RakPeer&&) = delete;
         SystemAddress getAdr(NetworkIdentifier const& ni) {
-            RakNetGUID const& guid = dAccess<RakNetGUID>(&ni, 8);
+            RakNetGUID const& guid = dAccess<RakNetGUID>(&ni, ll::offset::RAKNET_getAdr);
             return RakPeer::GetSystemAddressFromGuid(guid);
         }
         MCAPI virtual SystemAddress GetSystemAddressFromGuid(struct RakNet::RakNetGUID) const;
diff --git a/LiteLoader/include/llapi/mc/ResourcePackRepository.hpp b/LiteLoader/include/llapi/mc/ResourcePackRepository.hpp
index 8039412..677b6fc 100644
--- a/LiteLoader/include/llapi/mc/ResourcePackRepository.hpp
+++ b/LiteLoader/include/llapi/mc/ResourcePackRepository.hpp
@@ -21,7 +21,7 @@ public:
 
     inline class PackSourceFactory* getPackSourceFactory(){
         //ResourcePackRepository::_initializeWorldPackSource Line62
-        return dAccess<PackSourceFactory*>(this, 46 * 8);
+        return dAccess<PackSourceFactory*>(this, ll::offset::RESOURCEPACKREPOSITORY_getPackSourceFactory);
     };
 #undef AFTER_EXTRA
 #ifndef DISABLE_CONSTRUCTOR_PREVENTION_RESOURCEPACKREPOSITORY
diff --git a/LiteLoader/include/llapi/mc/ScoreboardIdentityRef.hpp b/LiteLoader/include/llapi/mc/ScoreboardIdentityRef.hpp
index 16155b9..162e836 100644
--- a/LiteLoader/include/llapi/mc/ScoreboardIdentityRef.hpp
+++ b/LiteLoader/include/llapi/mc/ScoreboardIdentityRef.hpp
@@ -13,7 +13,7 @@ class ScoreboardIdentityRef {
 public:
     enum IdentityDefinition::Type getIdentityType(){
         //ServerScoreboard::_unpackIdentityDefToScorePacket Line30~31 16+72
-        return dAccess<enum IdentityDefinition::Type>(this, 88);
+        return dAccess<enum IdentityDefinition::Type>(this, ll::offset::SCOREBOARDIDENTITYREF_getIdentityType);
     };
 
 #undef AFTER_EXTRA
diff --git a/LiteLoader/src/llapi/EventAPI.cpp b/LiteLoader/src/llapi/EventAPI.cpp
index 97bca2f..68402be 100644
--- a/LiteLoader/src/llapi/EventAPI.cpp
+++ b/LiteLoader/src/llapi/EventAPI.cpp
@@ -1129,8 +1129,8 @@ TInstanceHook(void, "?handle@ItemUseOnActorInventoryTransaction@@UEBA?AW4Invento
     IF_LISTENED(PlayerInteractEntityEvent) {
         PlayerInteractEntityEvent ev{};
         ev.mPlayer = sp;
-        ev.mTargetId = dAccess<ActorRuntimeID, 104>(this);//正确
-        ev.mInteractiveMode = static_cast<PlayerInteractEntityEvent::InteractiveMode>(dAccess<int, 112>(this));//看起来应该正确
+        ev.mTargetId = dAccess<ActorRuntimeID, ll::offset::EVENTAPI_PlayerInteractEntity_1>(this);//正确
+        ev.mInteractiveMode = static_cast<PlayerInteractEntityEvent::InteractiveMode>(dAccess<int, ll::offset::EVENTAPI_PlayerInteractEntity_2>(this));//看起来应该正确
         if (!ev.call())
             return;
     }
diff --git a/LiteLoader/src/llapi/mc/BiomeAPI.cpp b/LiteLoader/src/llapi/mc/BiomeAPI.cpp
index 33c1cd7..f4f1ef4 100644
--- a/LiteLoader/src/llapi/mc/BiomeAPI.cpp
+++ b/LiteLoader/src/llapi/mc/BiomeAPI.cpp
@@ -5,11 +5,11 @@
 #include <llapi/HookAPI.h>
 
 int Biome::getId() const {
-    return dAccess<int, 120>(this);
+    return dAccess<int, ll::offset::BIOMEAPI_getID>(this);
 }
 
 std::string const& Biome::getName() const {
-    return dAccess<std::string, 8>(this);
+    return dAccess<std::string, ll::offset::BIOMEAPI_getName>(this);
 }
 
 // Biome* Biome::fromId(int id) {
diff --git a/LiteLoader/src/llapi/mc/BlockAPI.cpp b/LiteLoader/src/llapi/mc/BlockAPI.cpp
index 955947f..8c62005 100644
--- a/LiteLoader/src/llapi/mc/BlockAPI.cpp
+++ b/LiteLoader/src/llapi/mc/BlockAPI.cpp
@@ -34,7 +34,7 @@ string Block::getTypeName() const {
 
 unsigned short Block::getTileData() {
     // 等待大佬改进
-    auto tileData = dAccess<unsigned short, 8>(this);
+    auto tileData = dAccess<unsigned short, ll::offset::BLOCKAPI_getTileData>(this);
     auto blk = &getLegacyBlock();
 
     if (((BlockLegacy*)blk)->toBlock(tileData) == (Block*)this) {
@@ -64,5 +64,5 @@ bool Block::setNbt(CompoundTag* nbt) {
 
 unsigned int const & Block::getRuntimeId() const{
     // Actor::_playFlySound Line7
-    return dAccess<unsigned int>(this, 48);
+    return dAccess<unsigned int>(this, ll::offset::BLOCKAPI_getRuntimeId);
 }
\ No newline at end of file
diff --git a/LiteLoader/src/llapi/mc/BlockLegacyAPI.cpp b/LiteLoader/src/llapi/mc/BlockLegacyAPI.cpp
index 206f68b..2e79b0c 100644
--- a/LiteLoader/src/llapi/mc/BlockLegacyAPI.cpp
+++ b/LiteLoader/src/llapi/mc/BlockLegacyAPI.cpp
@@ -13,7 +13,7 @@ Block* BlockLegacy::toBlock(unsigned short tileData) {
 }
 
 string BlockLegacy::getTypeName() {
-    return dAccess<string, 128>(this);
+    return dAccess<string, ll::offset::BLOCKLEGACYAPI_getRuntimeId>(this);
 }
 
 bool BlockLegacy::applyBoneMeal(BlockSource* a1, BlockPos* a2) {
diff --git a/LiteLoader/src/llapi/mc/ContainerAPI.cpp b/LiteLoader/src/llapi/mc/ContainerAPI.cpp
index 1ab210b..c3e4fdd 100644
--- a/LiteLoader/src/llapi/mc/ContainerAPI.cpp
+++ b/LiteLoader/src/llapi/mc/ContainerAPI.cpp
@@ -6,7 +6,7 @@
 #include <llapi/HookAPI.h>
 
  LIAPI std::string Container::getTypeName() {
-     ContainerType type = dAccess<ContainerType>(this, 8); //IDA Container::Container
+     ContainerType type = dAccess<ContainerType>(this, ll::offset::CONTAINERAPI_getTypeName); //IDA Container::Container
      // ContainerType type = getContainerType();
      return std::string{magic_enum::enum_name(type)};
  }
diff --git a/LiteLoader/src/llapi/mc/GameModeAPI.cpp b/LiteLoader/src/llapi/mc/GameModeAPI.cpp
index 3172ffd..c8f31af 100644
--- a/LiteLoader/src/llapi/mc/GameModeAPI.cpp
+++ b/LiteLoader/src/llapi/mc/GameModeAPI.cpp
@@ -3,5 +3,5 @@
 #include <llapi/HookAPI.h>
 
 ServerPlayer* GameMode::getPlayer() {
-    return dAccess<ServerPlayer*, 8>(this);
+    return dAccess<ServerPlayer*, ll::offset::GAMEMODEAPI_getPlayer>(this);
 }
\ No newline at end of file
diff --git a/LiteLoader/src/llapi/mc/HitResultAPI.cpp b/LiteLoader/src/llapi/mc/HitResultAPI.cpp
index de0ffca..622469b 100644
--- a/LiteLoader/src/llapi/mc/HitResultAPI.cpp
+++ b/LiteLoader/src/llapi/mc/HitResultAPI.cpp
@@ -2,13 +2,13 @@
 #include <llapi/HookAPI.h>
 
 FaceID HitResult::getFacing() {
-    return dAccess<FaceID>(this, 28);
+    return dAccess<FaceID>(this, ll::offset::HITRESULTAPI_getFacing);
 }
 Vec3 HitResult::getPos() {
-    return dAccess<Vec3>(this, 44);
+    return dAccess<Vec3>(this, ll::offset::HITRESULTAPI_getPos);
 }
 bool HitResult::isHitLiquid() {
-    return dAccess<bool>(this, 80);
+    return dAccess<bool>(this, ll::offset::HITRESULTAPI_isHitLiquid);
 }
 // LIAPI bool HitResult::isEntity() {
 //     return getHitResultType() == HitResultType::ENTITY;
@@ -17,13 +17,13 @@ bool HitResult::isHitLiquid() {
 //     return getHitResultType() == HitResultType::TILE;
 // }
 BlockPos HitResult::getBlockPos() {
-    return dAccess<BlockPos>(this, 32);
+    return dAccess<BlockPos>(this, ll::offset::HITRESULTAPI_getBlockPos);
 }
 BlockPos HitResult::getLiquidPos() {
-    return dAccess<BlockPos>(this, 84);
+    return dAccess<BlockPos>(this, ll::offset::HITRESULTAPI_getLiquidPos);
 }
 FaceID HitResult::getLiquidFacing() {
-    return dAccess<FaceID>(this, 81);
+    return dAccess<FaceID>(this, ll::offset::HITRESULTAPI_getLiquidFacing);
 }
 // LIAPI Vec3 HitResult::getLiquidHitPos();
 // LIAPI HitResultType HitResult::getHitResultType() {
diff --git a/LiteLoader/src/llapi/mc/ItemActorAPI.cpp b/LiteLoader/src/llapi/mc/ItemActorAPI.cpp
index 5b1bc5c..c584a2a 100644
--- a/LiteLoader/src/llapi/mc/ItemActorAPI.cpp
+++ b/LiteLoader/src/llapi/mc/ItemActorAPI.cpp
@@ -3,18 +3,18 @@
 #include <llapi/HookAPI.h>
 
 ItemStack* ItemActor::getItemStack() {
-    return (ItemStack*)((uintptr_t)this + 1568); // IDA Player::take Line127
+    return dAccess<ItemStack*>(this, ll::offset::ITEMACTORAPI_getItemStack); // IDA Player::take Line127
 }
 
 int ItemActor::getDespawnTime() {
-    return dAccess<int, 433*4>(this); // ItemActor::NormalTick Line258
+    return dAccess<int, ll::offset::ITEMACTORAPI_getDespawnTime>(this); // ItemActor::NormalTick Line258
 }
 
 bool ItemActor::setDespawnTime(int a1) {
-    dAccess<int, 433*4>(this) = a1;
+    dAccess<int, ll::offset::ITEMACTORAPI_getDespawnTime>(this) = a1;
     return true;
 }
 
 int ItemActor::getLatestSpawnTime() {
-    return dAccess<int, 428*4>(this);
+    return dAccess<int, ll::offset::ITEMACTORAPI_getLatestSpawnTime>(this);
 }
\ No newline at end of file
diff --git a/LiteLoader/src/llapi/mc/ItemStackAPI.cpp b/LiteLoader/src/llapi/mc/ItemStackAPI.cpp
index 7d8d437..dcdab50 100644
--- a/LiteLoader/src/llapi/mc/ItemStackAPI.cpp
+++ b/LiteLoader/src/llapi/mc/ItemStackAPI.cpp
@@ -84,7 +84,7 @@ int ItemStack::getAux() const {
 int ItemStack::getCount() const {
     if (this->isNull())
         return 0;
-    return dAccess<unsigned char, 34>(this);
+    return dAccess<unsigned char, ll::offset::ITEMSTACKAPI_getCount>(this);
 }
 
 bool ItemStack::setItem(ItemStack* newItem) {
@@ -112,7 +112,7 @@ bool ItemStack::setNbt(CompoundTag* nbt) {
 int ItemStackBase::getCount() const {
     if (this->isNull())
         return 0;
-    return dAccess<unsigned char, 34>(this);
+    return dAccess<unsigned char, ll::offset::ITEMSTACKAPI_getCount>(this);
 }
 
 // string ItemStack::getStandardName(const Localization& language) {
diff --git a/LiteLoader/src/llapi/mc/LevelAPI.cpp b/LiteLoader/src/llapi/mc/LevelAPI.cpp
index 94f0b63..6db672f 100644
--- a/LiteLoader/src/llapi/mc/LevelAPI.cpp
+++ b/LiteLoader/src/llapi/mc/LevelAPI.cpp
@@ -65,7 +65,7 @@ Block* Level::getBlock(const BlockPos& pos, BlockSource* blockSource) {
 
 BlockPalette* Level::getBlockPalettePtr(){
     // MovingBlockActor::load Line69
-    return dAccess<BlockPalette*>(Global<Level>,2000);
+    return dAccess<BlockPalette*>(Global<Level>,ll::offset::LEVELAPI_getBlockPalettePtr);
 };
 
 // Return nullptr when failing to get block
diff --git a/LiteLoader/src/llapi/mc/PlayerAPI.cpp b/LiteLoader/src/llapi/mc/PlayerAPI.cpp
index 682cdd9..26c0250 100644
--- a/LiteLoader/src/llapi/mc/PlayerAPI.cpp
+++ b/LiteLoader/src/llapi/mc/PlayerAPI.cpp
@@ -47,13 +47,13 @@ extern Logger logger;
 
 NetworkIdentifier* Player::getNetworkIdentifier() const{
     //ServerPlayer::isHostingPlayer
-    return dAccess<NetworkIdentifier*>(this, 2432);
+    return dAccess<NetworkIdentifier*>(this, ll::offset::PLAYERAPI_getNetworkIdentifier);
 }
 
 
 Certificate* Player::getCertificate() const{
     //KickCommand::_kickPlayer Line116
-    return dAccess<Certificate*>(this, 2736);
+    return dAccess<Certificate*>(this, ll::offset::PLAYERAPI_getCertificate);
 }
 
 std::string Player::getRealName() {
@@ -99,12 +99,12 @@ string Player::getServerAddress() {
 
 int Player::getPlatform(){
     //AddPlayerPacket::AddPlayerPacket Line59
-    return dAccess<int>(this, 2104);
+    return dAccess<int>(this, ll::offset::PLAYERAPI_getPlatform);
 }
 
 Container & Player::getInventory(){
     //InventoryContainerModel::_getContainer  2928 + 176
-    return dAccess<Container>(this, 3104);
+    return dAccess<Container>(this, ll::offset::PLAYERAPI_getInventory);
 }
 
 enum CommandPermissionLevel Player::getPlayerPermissionLevel(){
@@ -258,12 +258,12 @@ bool Player::transferServer(const string& address, unsigned short port) {
 
 BlockPos const & Player::getSpawnPosition(){
     //ServerNetworkHandler::_sendLevelData Line316
-    return dAccess<BlockPos>(this, 1797*4);
+    return dAccess<BlockPos>(this, ll::offset::PLAYERAPI_getSpawnPosition);
 }
 
 AutomaticID<Dimension, int> Player::getSpawnDimension(){
     //ServerNetworkHandler::_sendLevelData Line310
-    return dAccess<AutomaticID<Dimension, int>>(this, 1800*4);
+    return dAccess<AutomaticID<Dimension, int>>(this, ll::offset::PLAYERAPI_getSpawnDimension);
 }
 
 std::pair<BlockPos, int> Player::getRespawnPosition() {
@@ -322,12 +322,12 @@ string Player::getXuid() const{
 }
 
 mce::UUID Player::getClientUUID()const{
-    return dAccess<mce::UUID>(this,2720);
+    return dAccess<mce::UUID>(this,ll::offset::PLAYERAPI_getClientUUID);
 };
 
 unsigned char Player::getClientSubId() {
     //ServerPlayer::sendNetworkPacket 参4
-    return dAccess<unsigned char>(this,3520);
+    return dAccess<unsigned char>(this,ll::offset::PLAYERAPI_getClientSubId);
 }
 
 float Player::getAvgPacketLoss() {
@@ -442,7 +442,7 @@ size_t Player::getTotalXpNeededForLevel(int level) {
 
 bool Player::crashClient() {
     auto pkt = MinecraftPackets::createPacket(MinecraftPacketIds::LevelChunk);
-    dAccess<bool, 56>(pkt.get()) = 1;
+    dAccess<bool, ll::offset::PLAYERAPI_crashClient>(pkt.get()) = 1;
     sendNetworkPacket(*pkt);
     return true;
 }
@@ -684,8 +684,8 @@ bool Player::sendUpdateBlockPacket(BlockPos const& bpos, const Block& block, Upd
 
 bool Player::sendTransferPacket(const string& address, short port) const {
     auto packet = MinecraftPackets::createPacket(0x55);
-    dAccess<short>(packet.get(), 36) = port;
-    dAccess<string>(packet.get(), 40) = address;
+    dAccess<short>(packet.get(), ll::offset::PLAYERAPI_sendTransferPacket_port) = port;
+    dAccess<string>(packet.get(), ll::offset::PLAYERAPI_sendTransferPacket_address) = address;
     sendNetworkPacket(*packet);
     return true;
 }
@@ -698,8 +698,8 @@ bool Player::sendSetDisplayObjectivePacket(const string& title, const string& na
 
 bool Player::sendSetScorePacket(char type, const vector<ScorePacketInfo>& data) {
     auto packet = MinecraftPackets::createPacket(0x6c);
-    dAccess<char>(packet.get(), 48) = type;
-    dAccess<vector<ScorePacketInfo>>(packet.get(), 56) = data;
+    dAccess<char>(packet.get(), ll::offset::PLAYERAPI_sendSetScorePacket_type) = type;
+    dAccess<vector<ScorePacketInfo>>(packet.get(), ll::offset::PLAYERAPI_sendSetScorePacket_data) = data;
     sendNetworkPacket(*packet);
     return true;
 }
@@ -750,7 +750,7 @@ bool Player::sendSetScorePacket(char type, const vector<ScorePacketInfo>& data)
 
 bool Player::sendCommandRequestPacket(const string& cmd) {
     auto packet = MinecraftPackets::createPacket(0x4d);
-    dAccess<string, 48>(packet.get()) = cmd;
+    dAccess<string, ll::offset::PLAYERAPI_sendCommandRequestPacket_cmd>(packet.get()) = cmd;
     Global<ServerNetworkHandler>->handle(*getNetworkIdentifier(), *((CommandRequestPacket*)packet.get()));
     return true;
 }
diff --git a/LiteLoader/src/llapi/mc/ResourcePackRepositoryAPI.cpp b/LiteLoader/src/llapi/mc/ResourcePackRepositoryAPI.cpp
index aee1a14..5c309e9 100644
--- a/LiteLoader/src/llapi/mc/ResourcePackRepositoryAPI.cpp
+++ b/LiteLoader/src/llapi/mc/ResourcePackRepositoryAPI.cpp
@@ -6,7 +6,7 @@
 #include <llapi/HookAPI.h>
 
  void ResourcePackRepository::setCustomResourcePackPath(PackType type, const std::string& path) {
-     auto CompositePack = dAccess<CompositePackSource*>(this, 48);
+     auto CompositePack = dAccess<CompositePackSource*>(this, ll::offset::RESOURCEPACKREPOSITORYAPI_setCustomResourcePackPath);
      auto PackSourceFactory = getPackSourceFactory();
      auto& DirectoryPackSource = PackSourceFactory->createDirectoryPackSource(Core::Path(path), type, PackOrigin::PackOrigin_Dev, 0);
      CompositePack->addPackSource((PackSource*)&DirectoryPackSource);
diff --git a/LiteLoader/src/llapi/nbt/CompoundTagAPI.cpp b/LiteLoader/src/llapi/nbt/CompoundTagAPI.cpp
index 8192d79..898b966 100644
--- a/LiteLoader/src/llapi/nbt/CompoundTagAPI.cpp
+++ b/LiteLoader/src/llapi/nbt/CompoundTagAPI.cpp
@@ -142,12 +142,12 @@ void CompoundTag::setItemStack(ItemStack* item) {
 }
 
 std::unique_ptr<CompoundTag> CompoundTag::fromBlock(Block* block) {
-    auto tag = (CompoundTag*)((uintptr_t)block + 24); //dAccess Block::Block
+    auto tag = dAccess<CompoundTag*>(block, ll::offset::COMPOUNDTAGAPI_fromBlock); //dAccess Block::Block
     return tag->clone();
 }
 
 void CompoundTag::setBlock(Block* blk) {
-    auto tag = (CompoundTag*)((uintptr_t)blk + 24);//dAccess Block::Block
+    auto tag = dAccess<CompoundTag*>(blk, ll::offset::COMPOUNDTAGAPI_fromBlock);//dAccess Block::Block
     tag->deepCopy(*this);
 }