[Feature]: Rewrite BlockBench plugin to no longer use Geckolibs as a base

[AzureDoom]

Mod Version

All

Minecraft Version

All

Feature summary

Just part of the move Geckolibs systems completely as part of the rewrite done

Motivation and context

Just easier to maintain

Proposed solution or design

No response

Alternatives considered

No response

Additional context

No response

[AzureDoom]

Rewrite mostly finished now as per AzureLib/blockbench_plugin (1.21.1 branch)

Down to final verification and regression testing to ensure everything behaves correctly with Blockbench 5.0+ changes.

✅ AzureLib Blockbench Plugin Rewrite Testing Checklist

🧩 Core Export Functions

• Export .geo.json model file

  • File exports successfully
  • Geometry and bone data structure matches AzureLib runtime expectations

• Export .animation.json file

  • Rotation X/Y and position X axes are correctly inverted for BB 5.0+
  • No NaN or undefined keyframe outputs in resulting JSON

• Export .item display JSON

  • Y-offset adjustment (OFFSET_Y) applied correctly on export
  • Re-import restores translation and rotation accurately
  • Valid JSON structure with all display slots retained
  • Ensure particle texture file is included in export

• Export textures

  • Texture names/path strings are valid
  • Particle texture auto-selected when single texture is used

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🔁 Import & Conversion Behavior

• Import .bbmodel from Blockbench < 5.0

  • Animation rotation/position data normalized (no double inversion)
  • Bone keyframes appear visually correct after import

• Import .animation.json file

  • All keyframes (rotation, position, scale) deserialize properly
  • Easing and args persist after import

• Convert legacy AZURE_ITEM_BLOCK

  • Automatically converts to AZURE_ENTITY
  • Updated azurelibSettings saved back correctly

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🎞️ Animation Runtime & Editor Behavior

• Easing

  • Back, Elastic, Bounce, and step easings interpolate correctly
  • Easing curve matches preview expectations

• Undo/Redo

  • Easing and args remain intact after undo operations

• Reverse Keyframes Tool

  • Disabled (no effect) when Format.id === "azure_model"

• Animation Preview

  • Rotations, translations, and interpolations match in-game playback

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💥 Effect Channels

• Particle Channel

  • Keyframes export and re-import correctly
  • Particle pre_effect_script preserved

• Sound Channel

  • Sound events export and re-import correctly
  • Multiple sound entries at same timestamp supported

• Timeline / Instruction Channel

  • Timeline entries preserve script strings
  • Multiline script arrays joined with \n
  • Timestamps parse correctly on reload

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⚙️ Stability & Edge Cases

• Project Lifecycle

  • close_project resets AzureLib settings to defaults
  • new_project initializes fresh defaults

• invertMolang

  • Works correctly on numeric, string, and expression inputs
  • No double inversion in 5.0+ exports

• Version Detection

  • Blockbench.isNewerThan('4.99') check behaves correctly across versions

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🧪 Final Verification

• Open, edit, and re-save .bbmodel — confirm no structural corruption
• Compare exports between Blockbench 4.9.x and 5.0+ for parity
• Ensure all plugin logs ([AzureLib]) show expected messages

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