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portal

Create an item that will look like a blue book, with which you can create a portal to another dimension. This dimension will be called "otherworld", and...

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fabricServer1.21.1mod

Portal Mod Overview

  • Adds a server-side "Otherworld" dimension with perpetual dusk lighting, overworld-style biomes (trees, mobs, and structures), and full mob spawning.
  • Introduces a glowing portal block and a blue portal tome to open two-way gates between the overworld and the Otherworld.

Using the Portal Tome

  • Right-click any block with the portal tome to place a humming portal at that spot; a paired portal and small platform are also created in the Otherworld.
  • Right-click in the air to mark the block you’re looking at (within a short range) as a portal anchor, again creating a linked portal in the Otherworld.
  • Walk through the portal block to travel; players are given a short cooldown to prevent instant bouncing between worlds.
  • Operators can run /portalbook to receive the tome; it is not otherwise craftable.

Dimension & Portal Behavior

  • The Otherworld dimension is defined as a built-in data pack and loads automatically when the server runs with the mod.
  • Terrain generation mirrors overworld noise settings but with a fixed twilight time and softer ambient light to set it apart.
  • Portal blocks emit light, have no collision, and rest on a reinforced deepslate/lapis platform that is built for you when the portal is placed.
  • Portals try to place themselves at safe, open positions near the chosen coordinates in both worlds.

Notes and Limitations

  • Only players are teleported by the portal blocks; mobs are not moved through them.
  • The tome clears a two-block-tall column where the portal sits, so avoid using it directly inside fragile builds.
  • No crafting recipe is provided; distribution is via commands or server events.

Server Validation

Server validation passed - The mod was tested on a real Minecraft server and loaded successfully.