Spikes Racket Position Per State

The racket hitbox shifts with Sam's crouch pose. The body collider stays fixed per 2026-06-06-paddle-animation-collision-spike.md.

Decision

A single LowRacketAnchor Marker2D child defines the low-swing racket position. The scene-authored RacketHitbox position is the default. On state change the paddle switches between the two.

The per-frame Y-override in player_paddle.gd._physics_move is removed. The racket position is set on state transition, not every physics tick.

Why Marker2D

The paddle scene already uses Node2D anchors (AnkleAnchor, GripAnchor, WristAnchor). LowRacketAnchor extends the same pattern. The designer drags the cross-gizmo in the 2D viewport to where the racket should sit during a low swing.

Editor tool

A @tool Marker2D subclass draws the collision rectangle so the designer sees the actual hitzone while dragging:

@tool
class_name RacketPositionMarker
extends Marker2D

@export var collision_size := Vector2(20, 20)

func _draw() -> void:
	draw_rect(Rect2(-collision_size * 0.5, collision_size), Color.RED, false, 2.0)

collision_size matches the RacketCollision RectangleShape2D. The draw is editor-only; it does not appear at runtime.

Scene shape

PlayerPaddle (CharacterBody2D)
├── Sprite (AnimatedSprite2D)
├── LowRacketAnchor (RacketPositionMarker)
├── RacketHitbox (Area2D)
│   └── RacketCollision (CollisionShape2D)
├── ...

Code shape

player_paddle.gd overrides a virtual _apply_racket_position(state) on paddle.gd. The override switches between the low anchor and the default:

func _apply_racket_position(state: StringName) -> void:
	if state in _low_states:
		racket_hitbox.position = low_anchor.position
	else:
		racket_hitbox.position = _default_racket_pos
	racket_hitbox.position += _dev_offset
	_refresh_overlay_shapes()

The base class calls _apply_racket_position(state) from _on_animation_state_changed after the sprite animation plays. Partner paddles inherit the no-op default.

_base_racket_y and the crouch formula in _physics_move are removed.