feat: emotive animations + anime speed lines — hit flinch, dance emote (B)

- SkinnedPlayerModel: generic play_oneshot() (generalizes the Land lock),
  Hit and Dance in the clip table (Dance loops), restartable clips
- Hit flinch: victims visibly react on every peer's screen via the existing
  damage broadcast — no new RPC
- Dance emote on B: toggles while grounded and idle, breaks on any movement;
  synced to remotes via synced_is_dancing (all three spawner configs)
- Anime radial speed-lines overlay (canvas shader): fades in past ~1.2x walk
  speed, spikes on dash, widescreen-corrected clear center
- New input action 'emote' (B) in project.godot

11/11 FSM tests, spawn smoke 0 failures.

Co-Authored-By: Claude Fable 5 <[email protected]>

movement/player_movement_controller.gd

@@ -75,6 +75,11 @@ var synced_position: Vector3 = Vector3.ZERO
 var synced_velocity: Vector3 = Vector3.ZERO
 var synced_is_ads: bool = false
 var synced_wall_side: float = 0.0  # -1 wall left, +1 wall right (wall-run lean)
+var synced_is_dancing: bool = false  # dance emote (B), shown on the model
+
+# Anime speed-lines overlay (local player only)
+var _speedlines: ColorRect = null
+var _speedline_burst: float = 0.0
 @export var synced_skin_id: String = ""
 @export var synced_weapon_path: String = ""
 
@@ -130,6 +135,7 @@ func _ready() -> void:
 		add_child(_damage_layer)
 		_setup_hit_marker()
 		_setup_hud()
+		_setup_speedlines()
 	else:
 		call_deferred("_hide_remote_weapons")
 
@@ -315,6 +321,18 @@ func _setup_audio() -> void:
 	add_child(grapple_swing_player)
 	grapple_swing_player.play()
 
+func _setup_speedlines() -> void:
+	_speedlines = ColorRect.new()
+	_speedlines.name = "SpeedLines"
+	_speedlines.set_anchors_preset(Control.PRESET_FULL_RECT)
+	_speedlines.mouse_filter = Control.MOUSE_FILTER_IGNORE
+	var mat := ShaderMaterial.new()
+	mat.shader = load("res://assets/shaders/speed_lines.gdshader")
+	mat.set_shader_parameter("intensity", 0.0)
+	_speedlines.material = mat
+	_damage_layer.add_child(_speedlines)
+
+
 func _setup_hit_marker() -> void:
 	hit_marker = Control.new()
 	hit_marker.set_anchors_preset(Control.PRESET_CENTER)
@@ -665,6 +683,12 @@ func rpc_take_damage(amount: float, hit_pos: Vector3, attacker_id: int, weapon_n
 	if attacker_id != 0:
 		recent_attackers[attacker_id] = Time.get_ticks_msec() / 1000.0
 
+	# Flinch: the victim's model plays a hit reaction on every screen.
+	if amount > 0.0:
+		var vm = get_visual_model()
+		if vm and vm.has_method("play_oneshot"):
+			vm.play_oneshot("Hit", 0.3)
+
 	# Knockback lands on the simulating peer (movement is client-authoritative)
 	if is_multiplayer_authority() and impulse.length_squared() > 0.01:
 		apply_impulse(impulse)
@@ -817,6 +841,22 @@ func _physics_process(_delta: float) -> void:
 			if Input.is_action_just_pressed("toggle_camera_view"):
 				set_third_person(not third_person)
 
+			# Dance emote (B): toggles while grounded and idle-ish; any
+			# movement/jump/crouch input breaks it.
+			if Input.is_action_just_pressed("emote"):
+				var m := _ensure_machine()
+				var slow: bool = Vector2(velocity.x, velocity.z).length() < 1.0
+				if not synced_is_dancing and m and m.current_state == "ground" and slow:
+					synced_is_dancing = true
+				else:
+					synced_is_dancing = false
+		if synced_is_dancing:
+			var m2 := _ensure_machine()
+			var moving := raw_input.length() > 0.1 or input_jump or input_crouch or input_dash
+			var airborne: bool = m2 and m2.current_state != "ground"
+			if moving or airborne:
+				synced_is_dancing = false
+
 		var machine := _ensure_machine()
 		if machine:
 			machine.input_dir = raw_input
@@ -834,6 +874,16 @@ func _physics_process(_delta: float) -> void:
 	if not wind_player.playing and wind_factor > 0.0:
 		wind_player.play()
 
+	# Anime speed lines: fade in past ~1.2x walk speed, spike on dash.
+	if is_instance_valid(_speedlines):
+		_speedline_burst = maxf(_speedline_burst - _delta * 2.5, 0.0)
+		var hs := Vector2(velocity.x, velocity.z).length()
+		var speed_intensity := clampf((hs - params.walk_speed * 1.2) / 12.0, 0.0, 0.85)
+		var target := maxf(speed_intensity, _speedline_burst)
+		var mat := _speedlines.material as ShaderMaterial
+		var cur: float = mat.get_shader_parameter("intensity")
+		mat.set_shader_parameter("intensity", lerpf(cur, target, 1.0 - exp(-10.0 * _delta)))
+
 	var sm := _ensure_machine()
 	if not sm:
 		return
@@ -879,6 +929,8 @@ func _physics_process(_delta: float) -> void:
 			visual.set_locomotion(d.x, d.y, 1.0 if synced_is_ads else 0.0)
 		if visual.has_method("set_wall_side"):
 			visual.set_wall_side(sm.wall_side)
+		if visual.has_method("set_dancing"):
+			visual.set_dancing(synced_is_dancing)
 
 	# Publish state for remote peers
 	synced_movement_state = sm.current_state
@@ -918,6 +970,8 @@ func _on_movement_event(ev: String, data: Dictionary) -> void:
 		grapple_shoot_player.play()
 	elif ev == "grapple_latch":
 		grapple_latch_player.play()
+	elif ev == "dash":
+		_speedline_burst = 1.0
 	elif ev == "land":
 		# Landing thud: reuse the footstep sample, pitched down and louder
 		# with impact. Ground state resets pitch/volume before each step.
@@ -960,6 +1014,8 @@ func _process(delta: float) -> void:
 				visual.set_locomotion(d.x, d.y, 1.0 if synced_is_ads else 0.0)
 			if visual.has_method("set_wall_side"):
 				visual.set_wall_side(synced_wall_side)
+			if visual.has_method("set_dancing"):
+				visual.set_dancing(synced_is_dancing)
 			# Check for weapon changes
 			if synced_weapon_path != "" and synced_weapon_path != visual.get_meta("current_weapon_path", ""):
 				visual.set_weapon(synced_weapon_path)