big

characters/skin_leg_repair.gd

@@ -144,6 +144,7 @@ static func _knee_height(skeleton: Skeleton3D) -> float:
 static func _repair_mesh(mi: MeshInstance3D, skeleton: Skeleton3D, knee: float,
 		chain_l: PackedVector3Array, chain_r: PackedVector3Array,
 		limb_radius: float) -> Array:
+	var safe_bounds := mi.mesh.get_aabb()
 	var side := _side_map(mi.skin, skeleton)
 	var torso_bone := _torso_map(mi.skin, skeleton)
 	var surfaces: Array = []
@@ -169,6 +170,14 @@ static func _repair_mesh(mi: MeshInstance3D, skeleton: Skeleton3D, knee: float,
 		rebuilt.surface_set_material(i, entry["material"])
 		if entry["name"] != "":
 			rebuilt.surface_set_name(i, entry["name"])
+	# ArrayMesh rebuilds per-bind bone bounds from ARRAY_BONES. Some runtime
+	# GLBs have a sparse Skin bind table, so that derived array can be longer
+	# than the renderer skeleton and mesh_get_aabb rejects it. A padded bind-pose
+	# bound is conservative for humanoid animation and avoids that invalid path.
+	var padding := Vector3.ONE * maxf(safe_bounds.size.length() * 0.12, 0.25)
+	safe_bounds.position -= padding
+	safe_bounds.size += padding * 2.0
+	rebuilt.custom_aabb = safe_bounds
 	mi.mesh = rebuilt
 	return [snapped, removed]