DOF_LOCKED

const DOF_LOCKED = 0

import { DOF_LOCKED } from '@driftengine/physics';

In depth

Locked is zero so that a zero-filled array is a rigid joint. A joint somebody forgot to describe holds its bodies together rather than letting them fly apart, which is the safe direction for a default nobody chose.

Explicit rather than inferred from the bounds. The widespread convention is that lower > upper means free and lower === upper means locked, which needs no extra field and turns a caller who swapped their two numbers into a joint that silently does nothing. A mode is one byte and it cannot be mistyped into the wrong meaning.