# 07 Arcs

Living motion follows arcs.

| Moving part | Arc rule |
| --- | --- |
| Arms | Shoulder-driven curves. |
| Legs | Hip/knee swing arcs. |
| Weapons | Follow the attack path as one readable shape. |
| Projectiles | Straight only if mechanically intentional; otherwise use arc/curve. |

```text
arm arc

  1
    2
      3
    4
  5
```

Linear limb motion looks robotic unless the character or UI demands it.