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MISSING_FEATURES.md

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Missing Features

Unfortunately not everything can be migrated, some things are not supported by the Minecraft Bedrock Edition, Nukkit or by the tool itself.

Some to address this issue some items and blocks will be replaced by others and some others will be removed from the world.

See also the list of replaced blocks, items, entities and biomes.

Unsupported by the tool

These things could be converted but are not supported by the tool yet:

  • Entities: No entity will be converted, with exception of item frames which are blocks in Bedrock Edition
  • Potion effects: They will be converted as water potion for now
  • Dropped items: Will loose the Owner and Thrower tags because Java Edition accounts are not the same as Bedrock Edition accounts.
  • Nether and The End: Only overworld dimensions are supported for now

Unsupported by Minecraft Bedrock Edition

These things have some differences from Java Edition and needs to be treated specially:

  • Item Frames: They are block in Bedrock Edition, not entities, so they must not overlap any block to be converted, otherwise it will be skipped. Item Frames facing down or up aren`t supported by Bedrock Edition and will be ignored.
  • Lever: Java Edition allows you to place them facing north, south, east and west when place on the bottom or the top part of a block. Bedrock Edition only supports south or east in that condition, so levers pointing to north will point to south and levers pointing to west will point to east.
  • Buttons: Bedrock Edition doesn't allow you to place rotated buttons on the top or bottom face of a block. They will always face to north (the larger sides will be to east-west axis).
  • HideFlags: The tag is not supported, it will be migrated but it will be ignored by the client
  • Debug Stick and customized states: The block states in Bedrock Edition are not so customizable as it is in Java, so customized blocks may have theirs properties reversed, for example if you made a disconnected fence wall, they will be connected after the conversion
  • Spawn Eggs: which spawns unsupported entities will be black and won't spawn anything.
  • Custom Player Head: Player head with skins will be skipped by default. The Bedrock Edition doesn't support it. This can be changed using --keep-custom-heads or WorldConverter.skipSkinHeads so the player heads will be converted as regular heads (Steve skin).
  • Blocks (+NBT): We are unable to pick blocks with it's NBT inside the item, so these blocks will loose the NBT tag.
  • Written Books and Signs: With custom events will loose their events as they are unsupported by Bedrock Edition (click and hover events)
  • Big mushroom blocks: doesn't have all possible states in Bedrock Edition. Only states which occur when a red big mushroom is grown are supported. Other custom states will be changed to show cap on all
  • mushroom_stem: will always be converted to the red mushroom stem as Java Edition has only one block type for both mushrooms while Bedrock Edition has stems for each of them.
  • Tipped Arrow: of type strong_slowness (-60% Speed) isn't supported by Bedrock Edition and will be converted to normal slowness.
  • Spectral Arrow: is missing on Bedrock Edition and will be converted to regular arrows
  • Fireworks rockets and stars: with customized colors will always be converted to blue because it's not supported by Bedrock Edition.
  • Suspicious Stew: Is not available in Bedrock Edition and will be converted to a normal mushroom stew
  • All potions types: Custom effects and colors aren't supported and they will revert back to the normal potion indicated in the Potion NBT tag. Also, some potions aren't supported and they will be converted as stated in the replacements file
  • Colored signs: They are unsupported by Bedrock but the tool will convert the color using the text color system instead of the dye colors. Some colors will be a little different and all them will be very bright. Brown is missing so it will be red and there are two pinks (magenta and pink).

Unsupported by Nukkit

These things won't work because it's a missing feature or a bug in Nukkit servers:

  • Pistons: All pistons will loose their head and will not work at all.
  • Dispensers: They will always face the same direction and will not work.
  • Water-logging: All water-logged blocks will loose they water on conversion.
  • Spawn Eggs: Custom JSON values for entities will not work.
  • Book and Quill: Writable Books will be converted and will be readable but won't be editable.
  • Attribute Modifiers: Nukkit doesn't seems to have any support to attribute modifiers.
  • Falling Block: Will not hurt entities on landing. Nukkit also supports only the block id and data value so TileEntityData, Time, DropItem, HurtEntities, FallHurtMax and FallHurtAmount will be ignored.
  • Experience orbs: Will be migrated but will loose it's value because Nukkit does not save and neither load it, so collecting it will give nothing.
  • Open maps: They are not supported by Nukkit so no map content will be migrated
  • Biomes: Biomes related to the end and oceans from aquatic update aren't supported and will be replaced by similar biomes.
  • generatorOptions: Is only supported by FLAT worlds without the structures and custom options sections. The blocks and biomes will be converted properly.
  • Banners: Nukkit does not send the patterns to the players, so they will see an empty colored banner. This will be fixed once this pull request gets accepted.