Hardcore Questing Mode: Moveable Quest Gates

Lets HQM Quest Gates move with pistons while preserving their questing data.

Description

A Minecraft mod that lets Hardcore Questing Mode quest gate blocks move with vanilla pistons while preserving their portal data.

Moveable Quest Gates: Allows hqm:quest_portal blocks to be moved by vanilla pistons.
Sticky Piston Support: Sticky pistons can push and retract quest gates.
Normal Piston Support: Normal pistons can push quest gates.
All Directions: Movement works in all six piston directions.
Vanilla Limits Preserved: The normal 12-block piston limit and unrelated piston rules still apply.
Scoped Behavior: Other tile entity blocks remain unpushable unless vanilla already allows them.
HQM Integration: Targets Hardcore Questing Mode 4.4.4 quest portals.

This mod is intentionally aggressive and is meant for controlled niche modpacks, not broad public-pack compatibility.

Vanilla Piston Patch: Uses UniMixins to patch vanilla piston logic directly.
Custom Movement Path: Replaces the vanilla piston move routine only when an HQM quest portal is part of the piston move.
Tile Entity Override: Adds custom data storage to vanilla moving piston tile entities so HQM portal NBT survives piston animation.
Targeted Risk: The aggressive behavior is scoped to hqm:quest_portal; unrelated piston moves should keep vanilla behavior.
Compatibility Target: Built and tested against Minecraft 1.7.10, Forge 10.13.4.1614, and HQM 4.4.4.

Quest gates keep their configured state while moving:

NBT Capture: Captures TileEntityPortal data before the piston replaces the source block.
Moving Piston Storage: Stores the captured portal data on the temporary moving piston tile entity.
Restore Queue: Restores the portal snapshot after movement finishes.
Quest Binding: Keeps the assigned quest.
Portal Settings: Preserves portal type, custom display item, collision flags, texture flags, and player data.
Save Safety: Persists custom moving-piston data through NBT if the world is saved mid-movement.