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spigot-base/design/user-stories/us-016-build-and-use-pocket-base-portals.md
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fix(pocket-base): clear fall distance after portal travel
2026-08-28 23:50:08 -04:00

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---
type: User Story
title: "US-016: Build and use Pocket Base portals"
description: Let an owner create one public portal between their normal base and persistent Pocket Base.
status: done
---
# US-016: Build and use Pocket Base portals
As a **Pocket Base owner**, I want to connect my normal base to my Pocket Base with a public portal so that I and other players can move between them naturally.
## Acceptance criteria
- [x] The entrance uses a standard 4-by-5 outer frame with a 2-by-3 interior and a configurable frame material that defaults to diamond blocks.
- [x] Only the Pocket Base owner can activate a complete entrance frame with flint and steel.
- [x] Every required frame block must be within the owner's current normal-base bounds when the entrance is activated.
- [x] Custom particles and collision provide portal-like visuals and travel without relying on vanilla Nether portal blocks.
- [x] Each owner has at most one active entrance portal.
- [x] Activating another valid entrance deactivates the previous entrance without removing its frame blocks.
- [x] Breaking any required frame block immediately deactivates the entrance.
- [x] Any player can use an active entrance without a separate visitor setting, warm-up, or cooldown.
- [x] Non-player living mobs entering an active entrance portal are teleported into that Pocket Base.
- [x] Portal cooldown handling prevents transported mobs from immediately bouncing back.
- [x] Items, projectiles, vehicles, and other non-living entities are not transported.
- [x] Visitors can build, break blocks, open containers, and otherwise interact normally inside the Pocket Base.
- [x] The generated return portal sends players safely to the owner's active entrance.
- [x] Non-player living mobs entering the active, intact return portal are teleported safely outside the normal-world entrance.
- [x] Mob return travel falls back safely to the server spawn when the owner has no valid normal-world entrance.
- [x] Only the owner can activate a complete portal frame inside their own Pocket Base with flint and steel.
- [x] Every required return-frame block must be within the owner's unlocked Pocket Base boundary.
- [x] Each Pocket Base has at most one active return portal, and activating another valid frame moves the active return location without removing the old frame.
- [x] Relocated return portals persist through restarts, while existing Pocket Bases use the generated portal as their default.
- [x] Breaking the active return frame disables return travel through it.
- [x] Return travel falls back to the server spawn when the owner has no valid normal-world entrance.
- [x] Falling below Y -64 performs the same safe return without void damage.
- [x] Portal and void-return travel clears accumulated fall distance so players do not take carried-over fall damage after landing at the destination.
- [x] Players who disconnect inside a Pocket Base remain there when they reconnect.
- [x] Moving the normal base deactivates its entrance while preserving the Pocket Base world and its contents.
- [x] Portal ownership and the active entrance location persist through restarts.
## Related
- [US-003: Expand the base](us-003-expand-the-base.md)
- [US-008: Unlock Base IV visitor access](us-008-unlock-visitor-access.md)
- [US-015: Unlock a Pocket Base](us-015-unlock-a-pocket-base.md)
- [US-017: Expand a Pocket Base](us-017-expand-a-pocket-base.md)