Mcbe Model Fundamentals

Bedrock model fundamentals

1. Read docs/01-coordinates-and-rotation.md and docs/02-x-mirror-and-face-uv.md. Two facts decide everything:

• a JSON rotation [rx, ry, rz] is applied as right-handed (-rx, ry, -rz), X then Y then Z; animation rotations are ADDED to the bind pose;
• the game draws the model mirrored in x: east UV shows on the low-x side, west on the high-x side; across a face the texture runs as data/face-mapping.json says.

1. Conventions: 16 units = 1 block, ground y = 0, front is −z, +x is the model's left in the JSON.
2. Skeleton: one bone per thing that moves, pivot at the real joint. Fixed structure on one bone.
3. Write a builder script (copy examples/build_demo_kart.py or examples/build_demo_drake.py): bones → boxes and tilted parts → FIXED colours, palette, decal → SPEC → run.
4. Loop: --check until clean → write → render (tools/preview/render_model.py) → LOOK → lint (tools/inspect_model.py).
5. If vanilla already has the thing (a wing, a fin, a banner), open the vanilla resource pack's model and texture first.

Never reason about which side a face shows from the JSON alone. Never report a look you did not render.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: iMasterProX
• Source: iMasterProX/mcbemodelingmasterAI
• License: MIT

Install and usage instructions live in the source repository linked above.