Construction Wand Legacy

Backport of Construction Wand features for Minecraft 1.12.2 (Forge).

Implemented Features

Items and Core Modules

• 4 wand types: Stone / Iron / Diamond / Infinity
• 4 cores: Angel / Destruction / AE / ProjectE
• Core overlay model and tinting (wand appearance changes after installing a core)

Placement and Destruction Logic

• Construction mode
• Angel mode: supports mid-air placement
• Destruction mode
• Optional Baubles compatibility: container items equipped in Baubles slots can supply building blocks
• Optional ProjectE compatibility: A building wand that can directly consume EMC to place blocks
• Uses an interaction flow close to the original implementation:
  • Placement goes through ItemBlock.placeBlockAt
  • Breaking goes through removedByPlayer + onPlayerDestroy
  • Integrated with Forge Place/Break events

Upgrades and Options

• Core installation upgrade (combine wand + core in the crafting grid)
• Toggleable options (lock/direction/replace/match/random/core)
• Wand GUI (open with key combo while right-clicking in air)

Undo and Preview

• Undo history
• Undo preview sync (triggered by key query)
• Automatic preview refresh after undo
• Preview colors:
  • Destruction core: red
  • Undo preview: green
  • Angel core supports air-target preview

Default Controls

• Shift + Ctrl + Mouse Wheel: toggle lock mode
• Shift + Ctrl + Left Click (swing in air): switch core
• Shift + Ctrl + Right Click (in air): open wand config GUI
• Hold Shift + Ctrl: show undo preview
• Shift + Right Click on block (while holding wand): perform undo