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]>

assets/shaders/speed_lines.gdshader

@@ -0,0 +1,38 @@
+shader_type canvas_item;
+
+// Anime-style radial speed lines. Fullscreen ColorRect overlay; `intensity`
+// (0..1) is driven by the player controller from horizontal speed + dash.
+// Lines live at the screen edges and jitter inward, center stays clear.
+
+uniform float intensity : hint_range(0.0, 1.0) = 0.0;
+uniform vec4 line_color : source_color = vec4(1.0, 1.0, 1.0, 1.0);
+
+float hash(float n) {
+	return fract(sin(n * 4310.17) * 43758.5453);
+}
+
+void fragment() {
+	vec2 uv = UV - vec2(0.5);
+	uv.x *= 1.6; // widescreen: keep the clear zone round-ish
+	float dist = length(uv);
+	float ang = atan(uv.y, uv.x);
+
+	// Quantize the circle into spokes; each spoke gets a stable random phase.
+	float spokes = 90.0;
+	float id = floor((ang / 6.2831853 + 0.5) * spokes);
+	float rnd = hash(id);
+
+	// Only some spokes draw, and they flicker over time.
+	float alive = step(0.55, fract(rnd + floor(TIME * 9.0) * 0.13));
+
+	// Thin line across the spoke's angular width.
+	float local = fract((ang / 6.2831853 + 0.5) * spokes);
+	float line = smoothstep(0.5, 0.05, abs(local - 0.5)) ;
+
+	// Radial extent: start further out for weak intensity, reach inward as it grows.
+	float start = mix(0.62, 0.34, intensity) + rnd * 0.12;
+	float mask = smoothstep(start, start + 0.25, dist);
+
+	float a = intensity * alive * line * mask;
+	COLOR = vec4(line_color.rgb, a * line_color.a * 0.55);
+}

assets/shaders/speed_lines.gdshader.uid

@@ -0,0 +1 @@
+uid://l1bq145iht8

characters/skinned_player_model.gd

@@ -44,10 +44,12 @@ const CLIP_FALLBACKS := {
 	"Grapple": ["Grapple", "Fall", "Jump", "Idle"],
 	"Dash": ["Dash", "Sprint", "Run", "Idle"],
 	"Death": ["Death", "Fall"],
+	"Hit": ["Hit", "Idle"],
+	"Dance": ["Dance", "Idle"],
 }
 
 const LOOPING_CLIPS := ["Idle", "Walk", "Run", "Sprint", "Fall", "Crouch",
-	"CrouchIdle", "CrouchWalk", "Slide", "WallRun", "WallCling", "Grapple"]
+	"CrouchIdle", "CrouchWalk", "Slide", "WallRun", "WallCling", "Grapple", "Dance"]
 
 const BLEND_TIME := 0.15
 
@@ -191,7 +193,23 @@ func _set_shadow_mode_recursive(node: Node, mode: int) -> void:
 # ── Animation state ───────────────────────────────────────────────────────────
 
 var _prev_state: String = ""
-var _land_lock: float = 0.0  # seconds left where the Land one-shot owns playback
+var _oneshot_lock: float = 0.0  # seconds left where a one-shot owns playback
+var _dancing: bool = false
+
+
+## Play a one-shot clip (Hit reaction, Land, ...) over locomotion for
+## `lock_time` seconds; locomotion resumes afterwards.
+func play_oneshot(canonical: String, lock_time: float = 0.35) -> void:
+	if not loaded or not _resolved_clips.has(canonical):
+		return
+	_oneshot_lock = lock_time
+	_play_clip(canonical, true)
+
+
+## Emote toggle (Dance). Shown while grounded and near-idle; any real
+## movement breaks it (the controller clears the flag too).
+func set_dancing(on: bool) -> void:
+	_dancing = on
 
 
 ## Same contract as HumanoidModel.update_state(). Called by the movement
@@ -200,15 +218,16 @@ func update_state(state: String, speed: float, is_crouching: bool = false) -> vo
 	if not loaded or not animation_player:
 		return
 
-	# A heavy landing plays the Land one-shot before locomotion resumes.
-	if _land_lock > 0.0:
-		_land_lock -= get_process_delta_time()
-		if _land_lock > 0.0 and state in ["ground", "idle"]:
+	# One-shots (Land, Hit) own playback briefly.
+	if _oneshot_lock > 0.0:
+		_oneshot_lock -= get_process_delta_time()
+		if _oneshot_lock > 0.0:
 			_prev_state = state
 			return
+	# A heavy landing plays the Land one-shot before locomotion resumes.
 	if state in ["ground", "idle"] and _prev_state == "air" \
 			and _vertical_speed() < -12.0 and _resolved_clips.has("Land"):
-		_land_lock = 0.25
+		_oneshot_lock = 0.25
 		_play_clip("Land")
 		_prev_state = state
 		return
@@ -217,7 +236,9 @@ func update_state(state: String, speed: float, is_crouching: bool = false) -> vo
 	var clip := "Idle"
 	match state:
 		"ground", "idle":
-			if is_crouching:
+			if _dancing and speed < 0.5 and not is_crouching:
+				clip = "Dance"
+			elif is_crouching:
 				clip = "CrouchWalk" if speed > 0.5 else "Crouch"
 			elif speed > run_anim_reference_speed * 1.35:
 				clip = "Sprint"
@@ -291,12 +312,14 @@ func _process(delta: float) -> void:
 	_pose_mod.wall = _cur_wall
 
 
-func _play_clip(canonical: String) -> void:
+func _play_clip(canonical: String, restart: bool = false) -> void:
 	if not animation_player or not _resolved_clips.has(canonical):
 		return
 	var clip_name: String = _resolved_clips[canonical]
-	if _current_clip == clip_name and animation_player.is_playing():
+	if not restart and _current_clip == clip_name and animation_player.is_playing():
 		return
+	if restart:
+		animation_player.stop()
 	animation_player.play(clip_name, BLEND_TIME)
 	_current_clip = clip_name
 

debug/test_level_builder.gd

@@ -281,6 +281,7 @@ func _spawn_player(pid: int) -> CharacterBody3D:
 	client_rep_config.add_property(":synced_is_crouching")
 	client_rep_config.add_property(":synced_is_ads")
 	client_rep_config.add_property(":synced_wall_side")
+	client_rep_config.add_property(":synced_is_dancing")
 	client_rep_config.add_property(":synced_grapple_point")
 	client_rep_config.add_property(":synced_is_grapple_shooting")
 	client_rep_config.add_property(":synced_skin_id")

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)

project.godot

@@ -113,6 +113,11 @@ toggle_camera_view={
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":86,"physical_keycode":0,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
 ]
 }
+emote={
+"deadzone": 0.0,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":66,"physical_keycode":0,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
 
 [physics]
 

scenes/maps/level_runtime.gd

@@ -119,6 +119,7 @@ func _spawn_player(pid: int) -> CharacterBody3D:
 	client_rep_config.add_property(":synced_is_crouching")
 	client_rep_config.add_property(":synced_is_ads")
 	client_rep_config.add_property(":synced_wall_side")
+	client_rep_config.add_property(":synced_is_dancing")
 	client_rep_config.add_property(":synced_grapple_point")
 	client_rep_config.add_property(":synced_is_grapple_shooting")
 	client_rep_config.add_property(":synced_skin_id")

scenes/maps/procedural_arena/procedural_arena_runtime.gd

@@ -93,6 +93,7 @@ func _spawn_player(pid: int) -> CharacterBody3D:
 	client_rep_config.add_property(":synced_is_crouching")
 	client_rep_config.add_property(":synced_is_ads")
 	client_rep_config.add_property(":synced_wall_side")
+	client_rep_config.add_property(":synced_is_dancing")
 	client_rep_config.add_property(":synced_grapple_point")
 	client_rep_config.add_property(":synced_is_grapple_shooting")
 	client_rep_config.add_property(":synced_skin_id")