Variable: DEG_TO_RAD

const DEG_TO_RAD: number;

Scalar math helpers used everywhere in game code. Free functions instead of methods so they're cheap to import individually and tree-shake when unused. Naming matches Unity / GLSL conventions to minimize friction for anyone bringing those mental models in. Angle conversion. Use these instead of inlining * (Math.PI / 180) — the constant is folded by the minifier and the named call documents intent.