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Legacy 1.6.4 Corpus

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github-actions[bot] edited this page Nov 6, 2026 · 1 revision

1.6.4 corpus: what real 1.6.4 mods use

Measured 2026-11-06 with tools/compat/scan_164.py over 43 Forge 1.6.4 mod jars (test-mods-164/, gitignored; the list with versions and CurseForge URLs is test-mods-164/index.md, next to the jars). Companion of Legacy-1.6.4-Estimate; back to Home.

Corpus

43 files: IC2 (2.0.397 experimental, the 1.6.4 line), Tinkers' Construct EX.30, Forestry 2.3.1.1, Magic Bees, Binnie's Mods, Gendustry, Twilight Forest 1.20.3, Ender IO 1.0.6, Mystcraft 0.10.13, Witchery 0.20.5, Mo' Creatures 6.1, Lycanites Mobs, Custom NPCs, Thaumic Tinkerer, OpenBlocks + OpenPeripheralCore, BiblioCraft, Carpenter's Blocks, ICBM + Universal Electricity, Minechem, ExtrabiomesXL, Backpacks, Decocraft, Modular Turrets, Simply Jetpacks, Forge Essentials, the iChun mods (iChunUtil, Hats, Morph, Portal Gun, Gravity Gun, Mob Amputation), More Player Models, Dynamic Lights, CodeChickenCore + NEI + NEI Addons + ChickenChunks + Ender Storage, TreeCapitator, JourneyMap, VoxelMap (LiteLoader).

Not obtainable (CurseForge returns 403: the authors disabled third-party downloads): BuildCraft 4, Railcraft, Thermal Expansion 3, CoFHCore, Redstone Arsenal, Waila, Ars Magica 2, MineFactory Reloaded, ComputerCraft, Natura, Better Dungeons, Tinkers' Mechworks, MCA, MapWriter. Not on CurseForge/Modrinth with a 1.6.4 file under any slug tried: Biomes O' Plenty, Thaumcraft, Iron Chests, Applied Energistics, Mekanism, Pam's HarvestCraft, Galacticraft, GregTech, Inventory Tweaks, Flans, Rei's Minimap. So the corpus is thinner on the tech-pack mods (BuildCraft, Railcraft, TE) than a real FTB pack; those mostly use the same API families as IC2/Forestry/Ender IO, which are here.

Method and limits

The scanner parses each class's constant pool (class refs, field/method refs with owner, annotation descriptors; nested jars inside zips are included) and buckets every referenced net/minecraft, net/minecraftforge, cpw/mods/fml class: present (same path in src/main/java/legacyconnector/v1_7_10), renamed (known 1:1 1.6.4 to 1.7.10 rename or package move, table RENAMED in the script), removed (API gone in 1.7.10, needs a facade), moved (same simple name elsewhere in the shim), obfuscated (default-package notch names such as ye, atv: the jar was not reobfuscated to MCP class names), missing (none of these). Limits: "present" only says the class exists, not that every method the mod calls does (member names in the jars are SRG func_/field_ names of 1.6.4 that differ from 1.7.10's, so members are not compared; only the numeric-id members are recognised, by both MCP and 1.6.4 SRG names that the scanner lists); the loader also synthesizes API classes absent from the shim, so "missing" is an upper bound for what will not link.

Headline

  • The class surface is small. Of 1,020 distinct Minecraft/Forge classes the 40 non-obfuscated jars reference, 861 exist in the 1.7.10 shim under the same name, 74 are plain renames or package moves (Icon, IconRegister, Configuration, ForgeDirection, StepSound, EnumToolMaterial, INetworkManager, Attribute...), 10 moved package, 28 are removed APIs (the old tick/network/player-tracker/key-binding families, AABBPool, Vec3Pool, SoundPool) and only 47 are unaccounted for (61 class-file references in total, most single uses like BlockCactus, Packet15Place; the only ones used by more than one jar are EnchantmentThorns 4, ItemFlintAndSteel 3). By class-file references: 51,863 present, 5,204 renamed, 1,774 removed, 269 moved, 61 missing, 4,013 obfuscated.
  • Numeric ids: 31 of 43 jars (72%), i.e. 31 of 40 that are not LiteLoader/coremod libraries; 25 to 30 jars read blockID/itemID/Block.blocksList/World.getBlockId and 23 call the int setBlock. The constructors new Block(int, Material), new Item(int), new ItemStack(int, ...) appear in 18, 24 and 26 jars, biome/potion/enchantment ids in 7 to 17. This confirms the id facade as the biggest single item. Ids also come from the mod's config file in practically all of them.
  • Old network API: 35 of 43 jars (81%) (NetworkMod, IPacketHandler, Packet250CustomPayload, PacketDispatcher, Player; 23 jars touch Packet250CustomPayload itself, 25 PacketDispatcher). Plus the old tick API (ITickHandler, TickRegistry) in 34 jars, IPlayerTracker in 17, IConnectionHandler in 12, KeyBindingRegistry in 12. These need adapters; they are the second biggest item and not in the estimate's id-facade line.
  • Lifecycle annotations are a non-issue. 1.6.4 already has @Mod.EventHandler: 40 of 40 @Mod jars use it, only 1 (Mo' Creatures) still carries @PreInit/@Init/@PostInit as well. 0 jars use only the old forms. (The estimate's "1 to 2 days, old @PreInit forms" can shrink to a few hours.)
  • Event bus: 40 of 40 use @ForgeSubscribe and net.minecraftforge.event.Event/EventBus/EventPriority (all moved to cpw.mods.fml.common.eventhandler in 1.7.10), @SubscribeEvent in none. A single remap rule family.
  • Obfuscated (notch) class names: 9 of 43 jars (21%): CodeChickenCore, NEI, ChickenChunks, Ender Storage, TreeCapitator, Backpacks, Decocraft, Modular Turrets, VoxelMap (those jars are coremod/ASM-based or were built without reobfuscation to MCP class names). They reference 303 distinct short names (ye, atv, we...). Handling them needs the 1.6.4 notch to MCP class map (FML's joined.srg/fml_srg) in the loader, which the estimate did not list. NEI itself is bridged to JEI by project rule, so that jar needs only to be recognised, not translated.
  • Rendering API: Icon/IconRegister in 26/25 jars with 1,123/719 class-file uses, the heaviest single rename (a type-level alias or remap rule handles it); StepSound 19 jars; Vec3Pool/AABBPool 19/22 jars (call sites worldObj.getWorldVec3Pool().getVecFromPool become Vec3.createVectorHelper; needs a method-level rewrite, not only a class rename).
  • Largest jars add little new API: IC2, Tinkers', Forestry, Twilight Forest, Ender IO and Mystcraft are blocked by the same four things (renamed types, numeric ids, old packets, old tick handlers); see the per-jar list below.

Numbers

Regenerate: python tools/compat/scan_164.py <dir-with-jars> --md out.md.

Jars scanned: 43, shim classes (1.7.10 tree): 1339

Distinct referenced classes per bucket

Bucket Distinct classes Class-file references
present 861 51863
renamed 74 5204
removed 28 1774
moved 10 269
missing 47 61
obfuscated 303 4013

Per-jar share of Minecraft/Forge class references that are not present in the shim

Jar Classes present renamed+removed moved missing obfuscated numeric-id refs old net classes old lifecycle new lifecycle
BiblioCraft[v1.5.5].zip 244 132 15+8 1 2 0 110 IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, Packet, Packet250CustomPayload - yes
Carpenter's Blocks v3.2.8.6 - MC 1.6.4.jar 157 108 18+9 2 1 0 75 IPacketHandler, NetworkMod, Player, Packet, Packet250CustomPayload - yes
ChickenChunks-1.6.4-1.3.3.4-universal.jar 49 34 2+5 1 0 45 0 ITickHandler, NetworkMod, TickRegistry - yes
CodeChickenCore-1.6.4-0.9.0.9-universal.jar 101 44 2+3 1 0 56 0 ITickHandler, TickRegistry - -
CustomNPCs_1.6.2-1.6.4.zip 449 203 21+17 2 6 0 81 ITickHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
Decocraft_1.10.0_1.6.4.zip 256 20 3+4 1 0 38 0 IGuiHandler, IPacketHandler, NetworkMod, PacketDispatcher, Player - yes
DrZharks MoCreatures Mod v6.1.0 (1).zip 1233 203 27+15 3 0 0 229 ITickHandler, IGuiHandler, IPacketHandler, NetworkMod, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload yes yes
DynamicLights_1.6.4.zip 41 47 3+5 1 0 1 11 ITickHandler, TickRegistry - yes
EnderIO-1.6.4-1.0.6.376.jar 899 154 21+12 3 1 0 183 ITickHandler, IConnectionHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
EnderStorage-1.6.4-1.4.3.6-universal.jar 46 33 2+5 1 0 58 0 ITickHandler, NetworkMod, TickRegistry - yes
ExtrabiomesXL-1.6.4-3.15.9.jar 324 151 19+3 1 2 0 318 NetworkMod, Packet - yes
GravityGun2.0.0.zip 22 99 14+17 2 0 0 22 ITickHandler, IConnectionHandler, IPacketHandler, ITinyPacketHandler, NetworkMod, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
Hats2.1.8.zip 57 108 12+15 2 0 0 0 ITickHandler, IConnectionHandler, IPacketHandler, ITinyPacketHandler, NetworkMod, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
ICBM-1.4.2.386.jar 291 182 17+9 2 0 0 144 ITickHandler, IGuiHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet - yes
JourneyMap4.0.3_Unlimited_MC1.6.4.jar 376 127 14+7 1 3 0 6 ITickHandler, TickRegistry - yes
LycanitesMobsComplete 1.5.1h [1.6.4].jar 321 165 18+14 2 2 0 265 ITickHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
Minechem-1.6.4-5.0.5.FINAL.jar 317 165 16+13 1 0 0 121 ITickHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
MobAmputation2.0.1.zip 13 62 10+11 2 1 0 0 ITickHandler, IConnectionHandler, ITinyPacketHandler, NetworkMod, PacketDispatcher, Player, TickRegistry, Packet - yes
ModularTurrets-1.6.4-v1.0.1.zip 181 37 4+4 1 0 81 0 IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player - yes
MorePlayerModels_1.6.2-1.6.4.zip 95 114 11+14 2 0 0 5 ITickHandler, IConnectionHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
Morph-Beta-0.7.2.zip 54 141 17+18 3 2 0 0 ITickHandler, IConnectionHandler, IPacketHandler, ITinyPacketHandler, NetworkMod, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
NotEnoughItems-1.6.4-1.6.1.9-universal.jar 215 40 1+5 1 0 150 0 ITickHandler, TickRegistry - -
OpenBlocks-1.2.9.jar 582 259 25+10 5 2 0 105 ITickHandler, IGuiHandler, NetworkMod, NetworkRegistry, Player, TickRegistry, Packet - yes
OpenPeripheralCore-0.4.1.jar 256 66 5+4 1 1 0 4 ITickHandler, TickRegistry - yes
PortalGun2.0.1.zip 73 182 25+18 3 0 0 125 ITickHandler, IConnectionHandler, IPacketHandler, ITinyPacketHandler, NetworkMod, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
SimplyJetpacks-0.3.1.1.jar 35 61 10+11 1 0 0 5 ITickHandler, IPacketHandler, NetworkMod, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
TConstruct_mc1.6.4_EX.30.jar 543 356 33+15 4 4 0 450 ITickHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
ThaumicTinkerer-2.3-141.jar 726 211 24+13 2 1 0 175 ITickHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
Universal-Electricity-3.0.0.1-dev.jar 96 40 6+4 1 0 0 4 ITickHandler, TickRegistry - yes
[1.6.4]TreeCapitator.Forge.1.6.4.r06.Universal.jar 27 31 1+9 1 0 33 0 ITickHandler, IConnectionHandler, IPacketHandler, NetworkMod, PacketDispatcher, Player, TickRegistry - yes
backpacks 1.6.4 - 3.0.1.jar 206 40 8+10 1 0 104 0 ITickHandler, IConnectionHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry - yes
binnie-mods-1.8.0.jar 1036 162 22+9 1 1 0 194 ITickHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, Player, TickRegistry, Packet, Packet250CustomPayload - yes
forestry-A-2.3.1.1.jar 1275 252 27+10 1 2 0 433 ITickHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, Player, TickRegistry, Packet, Packet250CustomPayload - yes
forgeessentials-1.6.4-1.3.0.4-server.zip 1460 172 19+15 2 9 0 72 ITickHandler, IPacketHandler, NetworkMod, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
gendustry-mc164-1.1.3.fix1.jar 660 101 14+1 1 0 0 44 IGuiHandler, NetworkMod, NetworkRegistry - yes
iChunUtil2.4.0.zip 21 67 6+4 1 0 0 3 ITickHandler, TickRegistry - yes
industrialcraft-2_2.0.397-experimental.jar 811 268 30+18 2 1 0 435 ITickHandler, IConnectionHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
magicbees-2.1.13.jar 123 95 10+6 1 0 0 78 ITickHandler, IGuiHandler, NetworkMod, NetworkRegistry, TickRegistry - yes
mod_voxelMap_1.4.9_for_1.6.4.litemod 115 7 0+0 0 0 159 0 - - -
mystcraft-uni-1.6.4-0.10.13.01.zip 570 245 33+10 2 4 0 201 IConnectionHandler, IPacketHandler, NetworkMod, PacketDispatcher, Player, Packet, Packet250CustomPayload - yes
neiaddons-mc164-1.10.5.70.jar 91 60 6+10 0 0 0 30 ITickHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
twilightforest-1.20.3.jar 520 344 32+13 2 2 0 609 IConnectionHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, Player, TickRegistry, Packet, Packet250CustomPayload - yes
witchery-1.6.4-0.20.5.zip 742 394 31+15 4 5 0 661 ITickHandler, IGuiHandler, IPacketHandler, NetworkMod, NetworkRegistry, PacketDispatcher, Player, TickRegistry, Packet, Packet250CustomPayload - yes
  • numeric ids: 31 of 43 jars (72%)
  • old network API (Packet250CustomPayload / IPacketHandler / NetworkMod / PacketDispatcher): 35 of 43 jars (81%)
  • old lifecycle annotations (@PreInit/@Init/@PostInit): 1 of 43 jars (2%)
  • only old lifecycle annotations (no @EventHandler): 0 of 43 jars (0%)
  • new lifecycle annotation (@EventHandler): 40 of 43 jars (93%)
  • @ForgeSubscribe: 40 of 43 jars (93%)
  • @SubscribeEvent: 0 of 43 jars (0%)
  • obfuscated (notch) class names: 9 of 43 jars (20%)
  • a @Mod class at all: 40 of 43 jars (93%)

Numeric-id API references (all jars)

Reference Count Jars
itemID 1111 30
blockID 1096 26
World.getBlockId 719 25
Block.blocksList 490 27
World.setBlock(int ids) 423 23
new ItemStack(int ...) 406 26
new Item(int ...) 162 24
new PotionEffect(int ...) 160 17
new ItemBlock(int ...) 88 15
new Block(int ...) 84 18
Item.itemsList 83 22
new BlockContainer(int ...) 70 15
biomeID 43 11
new ItemArmor(int ...) 27 13
BiomeGenBase.biomeList 22 7
Enchantment.enchantmentsList 19 8
new BlockFlower(int ...) 14 5
new ItemFood(int ...) 14 9
Potion.potionTypes 11 7
new ItemSword(int ...) 11 5
new BlockLog(int ...) 10 3
new BlockLeavesBase(int ...) 9 5
new ItemPickaxe(int ...) 9 5
new Enchantment(int ...) 8 5
new BlockStairs(int ...) 6 6
new ItemAxe(int ...) 6 3
new BlockHalfSlab(int ...) 5 5
new ItemSlab(int ...) 5 3
new BlockBreakable(int ...) 5 4
new BiomeGenBase(int ...) 4 4
new ItemTool(int ...) 4 3
new BlockLeaves(int ...) 4 3
new BlockSapling(int ...) 4 4
new ItemSpade(int ...) 4 3
new BlockFence(int ...) 3 3
new BlockWoodSlab(int ...) 3 2
new Potion(int ...) 3 3
new ItemBucket(int ...) 3 3
new BlockDoor(int ...) 3 3
new ItemHoe(int ...) 3 2
new ItemRecord(int ...) 2 2
new BlockFenceGate(int ...) 2 2
new BlockWall(int ...) 2 2
new BlockVine(int ...) 2 2
new BlockWood(int ...) 2 2
new BlockChest(int ...) 2 2
new ItemMultiTextureTile(int ...) 2 2
new BlockTorch(int ...) 2 1
new ItemMapBase(int ...) 2 1
new ItemMap(int ...) 2 1
new BlockRotatedPillar(int ...) 2 1
new ItemFlintAndSteel(int ...) 1 1
new BlockStep(int ...) 1 1
new BlockPressurePlate(int ...) 1 1
new BlockRail(int ...) 1 1
new BlockButton(int ...) 1 1
new BlockFire(int ...) 1 1
new BlockTrapDoor(int ...) 1 1
new BlockRailBase(int ...) 1 1
new BlockSand(int ...) 1 1
new BlockLadder(int ...) 1 1
new BlockWeb(int ...) 1 1
new BlockCocoa(int ...) 1 1
new BlockOreStorage(int ...) 1 1
new ItemDoor(int ...) 1 1
new ItemLeaves(int ...) 1 1
new ItemMonsterPlacer(int ...) 1 1
new BlockDragonEgg(int ...) 1 1
new BlockLilyPad(int ...) 1 1
new BlockIce(int ...) 1 1
new ItemBow(int ...) 1 1
new ItemColored(int ...) 1 1
new ItemSeeds(int ...) 1 1

Top 60 missing classes by number of jars using them

Class Jars Class files Hint
net/minecraft/enchantment/EnchantmentThorns 4 8
net/minecraft/item/ItemFlintAndSteel 3 4
net/minecraft/item/ItemWritableBook 1 3
net/minecraft/util/EnumOS 1 2
net/minecraft/network/packet/Packet12PlayerLook 1 2
net/minecraft/block/BlockQuartz 1 1
net/minecraft/entity/ai/EntityAIDoorInteract 1 1
net/minecraft/entity/ai/EntityAINearestAttackableTargetSorter 1 1
net/minecraft/client/gui/GuiButtonMerchant 1 1
net/minecraft/network/packet/Packet103SetSlot 1 1
net/minecraft/tileentity/WeightedRandomMinecart 1 1
cpw/mods/fml/common/network/OpenGuiPacket 1 1
net/minecraft/block/BlockStep 1 1
net/minecraft/world/gen/feature/WorldGenDesertWells 1 1
net/minecraft/client/gui/GuiGameOver 1 1
net/minecraft/world/chunk/storage/RegionFileCache 1 1
net/minecraft/item/ItemSaddle 1 1
net/minecraft/network/packet/Packet7UseEntity 1 1
net/minecraftforge/client/GuiControlsScrollPanel 1 1
net/minecraft/client/model/ModelIronGolem 1 1
net/minecraft/network/packet/Packet62LevelSound 1 1
net/minecraft/block/BlockCactus 1 1
net/minecraft/tileentity/TileEntityDaylightDetector 1 1
net/minecraft/block/BlockBaseRailLogic 1 1
net/minecraft/block/BlockComparator 1 1
net/minecraft/entity/EntitySelectorArmoredMob 1 1
net/minecraftforge/client/EnumHelperClient 1 1
net/minecraft/client/resources/data/BaseMetadataSectionSerializer 1 1
net/minecraft/block/BlockRedstoneLogic 1 1
net/minecraft/block/BlockMelon 1 1
net/minecraft/network/packet/Packet201PlayerInfo 1 1
net/minecraft/item/ItemCarrotOnAStick 1 1
net/minecraft/network/packet/Packet20NamedEntitySpawn 1 1
net/minecraft/block/BlockOreStorage 1 1
net/minecraft/network/packet/Packet30Entity 1 1
net/minecraft/network/packet/Packet19EntityAction 1 1
net/minecraft/network/packet/Packet18Animation 1 1
net/minecraft/network/packet/Packet29DestroyEntity 1 1
net/minecraft/network/packet/Packet15Place 1 1
net/minecraft/block/BlockStationary 1 1
net/minecraft/network/packet/Packet9Respawn 1 1
net/minecraft/network/packet/Packet43Experience 1 1
net/minecraft/network/packet/Packet41EntityEffect 1 1
net/minecraft/world/gen/structure/ComponentStrongholdStairs2 1 1
net/minecraftforge/common/ForgeDummyContainer 1 1
net/minecraft/block/BlockSilverfish 1 1
net/minecraft/network/packet/Packet32EntityLook 1 1

Top 60 removed classes by number of jars using them

Class Jars Class files Hint
cpw/mods/fml/common/TickType 35 90 removed (tick events in 1.7.10)
cpw/mods/fml/common/registry/TickRegistry 35 70 removed (tick events in 1.7.10)
cpw/mods/fml/common/network/NetworkMod 35 51 removed (annotation)
cpw/mods/fml/common/ITickHandler 34 116 removed (tick events in 1.7.10)
cpw/mods/fml/common/network/Player 30 133 removed (EntityPlayer)
net/minecraft/network/packet/Packet 27 397 removed (Packet in net/minecraft/network)
cpw/mods/fml/common/network/IPacketHandler 27 39 removed (SimpleNetworkWrapper / FMLEventChannel)
cpw/mods/fml/common/network/PacketDispatcher 25 266 removed
net/minecraft/network/packet/Packet250CustomPayload 23 197 removed (FMLProxyPacket)
net/minecraft/util/AABBPool 22 123 removed (AxisAlignedBB.getBoundingBox is static)
net/minecraft/util/Vec3Pool 19 90 removed (Vec3.createVectorHelper)
cpw/mods/fml/common/IPlayerTracker 17 56 removed (PlayerEvent in 1.7.10)
cpw/mods/fml/client/registry/KeyBindingRegistry 12 26 removed (ClientRegistry.registerKeyBinding + KeyInputEvent)
cpw/mods/fml/client/registry/KeyBindingRegistry$KeyHandler 12 26 removed (ClientRegistry.registerKeyBinding + KeyInputEvent)
cpw/mods/fml/common/network/IConnectionHandler 12 17 removed (FMLNetworkEvent)
cpw/mods/fml/common/network/NetworkMod$SidedPacketHandler 10 10 removed (annotation)
net/minecraft/client/audio/SoundPool 8 8 removed (SoundHandler, sounds.json)
cpw/mods/fml/common/IScheduledTickHandler 7 25 removed (tick events in 1.7.10)
cpw/mods/fml/common/network/NetworkModHandler 6 6 removed
cpw/mods/fml/common/network/ITinyPacketHandler 5 5 removed
cpw/mods/fml/common/ICraftingHandler 3 6 removed (PlayerEvent.ItemCraftedEvent)
net/minecraft/crash/CallableMinecraftVersion 3 3 removed (crash report internals)
net/minecraft/block/EnumMobType 2 3 removed
net/minecraft/src/ModLoader 2 3 removed (ModLoader base mods)
net/minecraft/client/audio/SoundPoolEntry 2 2 removed (SoundHandler, sounds.json)
net/minecraft/logging/ILogAgent 2 2 removed (log4j)
cpw/mods/fml/common/registry/ItemData 2 2 removed
cpw/mods/fml/common/IPickupNotifier 1 2 removed (PlayerEvent.ItemPickupEvent)

Top 60 renamed classes by number of jars using them

Class Jars Class files Hint
net/minecraftforge/event/ForgeSubscribe 40 206 cpw/mods/fml/common/eventhandler/SubscribeEvent
net/minecraftforge/common/Configuration 32 293 net/minecraftforge/common/config/Configuration
net/minecraftforge/common/Property 30 120 net/minecraftforge/common/config/Property
net/minecraftforge/common/ForgeDirection 28 873 net/minecraftforge/common/util/ForgeDirection
net/minecraft/network/INetworkManager 27 140 net/minecraft/network/NetworkManager
net/minecraft/util/Icon 26 1123 net/minecraft/util/IIcon
net/minecraft/client/renderer/texture/IconRegister 25 719 net/minecraft/client/renderer/texture/IIconRegister
net/minecraft/network/NetServerHandler 23 66 net/minecraft/network/NetHandlerPlayServer
net/minecraftforge/event/Event 22 171 cpw/mods/fml/common/eventhandler/Event
net/minecraft/util/ChatMessageComponent 21 87 net/minecraft/util/IChatComponent / ChatComponentText
net/minecraft/block/StepSound 19 192 net/minecraft/block/Block$SoundType
net/minecraft/block/BlockFluid 18 71 net/minecraft/block/BlockLiquid
net/minecraft/block/BlockHalfSlab 17 53 net/minecraft/block/BlockSlab
net/minecraft/item/EnumArmorMaterial 14 43 net/minecraft/item/ItemArmor$ArmorMaterial
net/minecraftforge/event/Event$Result 13 28 cpw/mods/fml/common/eventhandler/Event
net/minecraft/client/multiplayer/NetClientHandler 13 14 net/minecraft/client/network/NetHandlerPlayClient
net/minecraft/network/packet/Packet132TileEntityData 12 75 net/minecraft/network/play/server/S35PacketUpdateTileEntity
net/minecraft/util/EnumMovingObjectType 12 64 net/minecraft/util/MovingObjectPosition$MovingObjectType
net/minecraft/entity/ai/attributes/Attribute 11 160 net/minecraft/entity/ai/attributes/IAttribute
net/minecraftforge/event/EventPriority 11 30 cpw/mods/fml/common/eventhandler/EventPriority
net/minecraft/item/EnumToolMaterial 10 69 net/minecraft/item/Item$ToolMaterial
net/minecraft/client/resources/ResourceManager 10 23 net/minecraft/client/resources/IResourceManager
net/minecraft/network/packet/NetHandler 10 16 net/minecraft/network/INetHandler
net/minecraft/network/NetLoginHandler 10 11 net/minecraft/network/NetHandlerLoginServer
net/minecraft/network/packet/Packet1Login 10 11 net/minecraft/network/play/server/S01PacketJoinGame
net/minecraft/entity/ai/attributes/AttributeInstance 9 155 net/minecraft/entity/ai/attributes/IAttributeInstance
net/minecraftforge/event/Cancelable 9 29 cpw/mods/fml/common/eventhandler/Cancelable
net/minecraftforge/common/EnumHelper 8 10 net/minecraftforge/common/util/EnumHelper
net/minecraft/entity/EntityLivingData 7 49 net/minecraft/entity/IEntityLivingData
net/minecraft/client/renderer/tileentity/TileEntityRenderer 7 31 net/minecraft/client/renderer/tileentity/TileEntityRendererDispatcher
net/minecraft/client/renderer/texture/TextureObject 7 13 net/minecraft/client/renderer/texture/ITextureObject
net/minecraft/network/packet/Packet131MapData 6 26 net/minecraft/network/play/server/S34PacketMaps
net/minecraft/client/resources/Resource 6 6 net/minecraft/client/resources/IResource
net/minecraft/world/gen/structure/ComponentVillageStartPiece 5 14 net/minecraft/world/gen/structure/StructureVillagePieces$Start
net/minecraft/world/gen/structure/ComponentVillage 5 8 net/minecraft/world/gen/structure/StructureVillagePieces$Village
net/minecraft/entity/EntityEggInfo 5 7 net/minecraft/entity/EntityList$EntityEggInfo
net/minecraft/world/gen/structure/StructureVillagePieceWeight 5 7 net/minecraft/world/gen/structure/StructureVillagePieces$PieceWeight
net/minecraft/entity/ai/EntityAITaskEntry 5 5 net/minecraft/entity/ai/EntityAITasks$EntityAITaskEntry
net/minecraft/world/biome/SpawnListEntry 4 29 net/minecraft/world/biome/BiomeGenBase$SpawnListEntry
net/minecraftforge/common/ConfigCategory 4 9 net/minecraftforge/common/config/ConfigCategory
net/minecraft/network/packet/Packet28EntityVelocity 4 7 net/minecraft/network/play/server/S12PacketEntityVelocity
net/minecraft/util/WeightedRandomItem 4 6 net/minecraft/util/WeightedRandom$Item
net/minecraft/entity/item/EntityFallingSand 3 9 net/minecraft/entity/item/EntityFallingBlock
net/minecraft/client/settings/EnumOptions 3 5 net/minecraft/client/settings/GameSettings$Options
net/minecraft/tileentity/TileEntityRecordPlayer 3 4 net/minecraft/block/BlockJukebox$TileEntityJukebox
net/minecraft/entity/EntityOwnable 3 4 net/minecraft/entity/IEntityOwnable
net/minecraft/entity/player/EnumStatus 3 3 net/minecraft/entity/player/EntityPlayer$EnumStatus
net/minecraftforge/client/event/sound/PlaySoundEvent 3 3 net/minecraftforge/client/event/sound/PlaySoundEvent17
net/minecraftforge/client/event/sound/PlayStreamingEvent 3 3 net/minecraftforge/client/event/sound/PlayStreamingSourceEvent
net/minecraft/server/management/PlayerInstance 3 3 net/minecraft/server/management/PlayerManager$PlayerInstance
net/minecraft/network/packet/Packet51MapChunk 3 3 net/minecraft/network/play/server/S21PacketChunkData
net/minecraft/client/resources/ResourceManagerReloadListener 3 3 net/minecraft/client/resources/IResourceManagerReloadListener
net/minecraft/block/BlockTripWireSource 3 3 net/minecraft/block/BlockTripWireHook
net/minecraft/world/EnumGameType 2 8 net/minecraft/world/WorldSettings$GameType
net/minecraft/network/packet/Packet100OpenWindow 2 6 net/minecraft/network/play/server/S2DPacketOpenWindow
net/minecraftforge/event/Event$HasResult 2 6 cpw/mods/fml/common/eventhandler/Event
net/minecraft/client/gui/GuiSmallButton 2 4 net/minecraft/client/gui/GuiOptionButton
net/minecraft/world/storage/MapCoord 2 4 net/minecraft/world/storage/MapData$MapCoord
net/minecraftforge/common/Property$Type 2 3 net/minecraftforge/common/config/Property
net/minecraft/world/storage/MapInfo 2 3 net/minecraft/world/storage/MapData$MapInfo

Top 60 moved classes by number of jars using them

Class Jars Class files Hint
net/minecraftforge/event/EventBus 40 206 ['cpw/mods/fml/common/eventhandler/EventBus']
net/minecraft/dispenser/IRegistry 7 19 ['net/minecraft/util/IRegistry']
net/minecraftforge/common/FakePlayer 6 17 ['net/minecraftforge/common/util/FakePlayer']
net/minecraft/item/ItemInWorldManager 6 11 ['net/minecraft/server/management/ItemInWorldManager']
cpw/mods/fml/common/network/FMLNetworkHandler 6 6 ['cpw/mods/fml/common/network/internal/FMLNetworkHandler']
net/minecraftforge/common/FakePlayerFactory 2 5 ['net/minecraftforge/common/util/FakePlayerFactory']
net/minecraft/client/gui/GuiSlider 2 2 ['cpw/mods/fml/client/config/GuiSlider']
net/minecraftforge/event/IEventListener 1 1 ['cpw/mods/fml/common/eventhandler/IEventListener']
net/minecraftforge/event/ASMEventHandler 1 1 ['cpw/mods/fml/common/eventhandler/ASMEventHandler']
net/minecraftforge/event/ListenerList 1 1 ['cpw/mods/fml/common/eventhandler/ListenerList']

Blockers of the most-used jars (non-present classes by number of class files, then numeric-id references)

  • industrialcraft-2_2.0.397-experimental.jar: Configuration (renamed, 146), Icon (renamed, 58), ForgeDirection (renamed, 57), EventBus (moved, 33), IconRegister (renamed, 27), StepSound (renamed, 27); numeric: itemID 132, blockID 75, World.getBlockId 67, Block.blocksList 55
  • TConstruct_mc1.6.4_EX.30.jar: Icon (renamed, 106), IconRegister (renamed, 66), ForgeDirection (renamed, 40), StepSound (renamed, 29), Packet (removed, 26), INetworkManager (renamed, 18); numeric: blockID 69, World.getBlockId 64, Block.blocksList 63, new ItemStack(int ...) 62
  • forestry-A-2.3.1.1.jar: ForgeDirection (renamed, 128), Icon (renamed, 124), IconRegister (renamed, 62), EventBus (moved, 15), Event (renamed, 14), Packet (removed, 11); numeric: blockID 106, itemID 89, World.getBlockId 60, new ItemStack(int ...) 47
  • twilightforest-1.20.3.jar: Icon (renamed, 82), IconRegister (renamed, 65), AttributeInstance (renamed, 44), Attribute (renamed, 44), StructurePieceBlockSelector (renamed, 35), Vec3Pool (removed, 24); numeric: blockID 237, itemID 110, World.getBlockId 57, World.setBlock(int ids) 47
  • EnderIO-1.6.4-1.0.6.376.jar: ForgeDirection (renamed, 151), Icon (renamed, 98), Packet (removed, 45), IconRegister (renamed, 44), PacketDispatcher (removed, 24), StepSound (renamed, 16); numeric: new ItemStack(int ...) 44, itemID 30, World.getBlockId 26, Block.blocksList 20
  • NotEnoughItems-1.6.4-1.6.1.9-universal.jar: ye (obfuscated, 91), by (obfuscated, 33), atv (obfuscated, 30), we (obfuscated, 27), uf (obfuscated, 26), uy (obfuscated, 24); numeric: none
  • witchery-1.6.4-0.20.5.zip: Packet (removed, 98), PacketDispatcher (removed, 94), Packet250CustomPayload (removed, 76), Icon (renamed, 59), EnumMovingObjectType (renamed, 44), IconRegister (renamed, 38); numeric: blockID 173, World.getBlockId 113, itemID 112, World.setBlock(int ids) 56
  • mystcraft-uni-1.6.4-0.10.13.01.zip: Packet (removed, 40), Icon (renamed, 27), IconRegister (renamed, 22), Event (renamed, 13), Player (removed, 13), Packet250CustomPayload (removed, 11); numeric: blockID 59, World.setBlock(int ids) 33, World.getBlockId 29, itemID 16
  • JourneyMap4.0.3_Unlimited_MC1.6.4.jar: ForgeSubscribe (renamed, 4), ResourceManager (renamed, 3), BlockFluid (renamed, 3), EnumOS (missing, 2), INetworkManager (renamed, 2), NetClientHandler (renamed, 2); numeric: Block.blocksList 4, blockID 2
  • DrZharks MoCreatures Mod v6.1.0 (1).zip: AttributeInstance (renamed, 55), Attribute (renamed, 55), Icon (renamed, 12), IconRegister (renamed, 12), EntityLivingData (renamed, 5), StepSound (renamed, 5); numeric: itemID 98, blockID 39, World.getBlockId 28, Block.blocksList 20

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