Collision layers

This skill owns stable collision/query category IDs and their interaction matrix. It does not own hit resolution (hitbox-hurtbox), world navigation/body motion, camera collision response or IK contact solving.

Matrix

Publish stable semantic categories and allowed interaction/query pairs, for example project-specific equivalents of:

pawn-body
world-solid
attack-volume
hurt-volume
grab-volume
projectile-volume
hazard/sensor
camera-query
ik-ground-query

Names and count are project data. Rendering/costume/material layers are not automatically gameplay collision layers.

Rules

1. hitbox-hurtbox owns attack/hurt/grab meaning and stable hit identity; this skill only allows/blocks candidate layer pairs.
2. World/pawn blocking and movement response stay with the movement/physics owner; hazard-volume owns hazard semantics.
3. Projectile friendly-fire/team policy is explicit project data rather than an assumed universal default.
4. camera-anti-clip and ik-foot-locking use dedicated query masks/categories so presentation probes do not accidentally trigger gameplay contacts.
5. Layer IDs/masks remain stable across asset/costume swaps; catalog reorder or visual skin changes do not silently alter collision behavior.

Accept

Export/draw the interaction matrix and replay representative allowed/blocked pairs. Changing render assets leaves layer IDs/pairs unchanged, and every gameplay contact still resolves through its domain owner rather than the mask alone.