feat(feedback): add responsive camera and impacts

Game/scenes/HUD.tscn

@@ -118,6 +118,17 @@ label_settings = SubResource("LabelSettings_kickoff")
 horizontal_alignment = 1
 vertical_alignment = 1
 
+[node name="ImpactFlash" type="ColorRect" parent="Control"]
+visible = false
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+mouse_filter = 2
+color = Color(0.72, 0.9, 1, 0)
+
 [node name="ResultOverlay" type="Control" parent="Control"]
 visible = false
 layout_mode = 1

Game/scripts/HUDController.gd

@@ -18,6 +18,7 @@ class_name HUDController
 @onready var result_panel = get_node_or_null("Control/ResultOverlay/Center/ResultPanel")
 @onready var result_label = get_node_or_null("Control/ResultOverlay/Center/ResultPanel/VBox/ResultLabel")
 @onready var final_score_label = get_node_or_null("Control/ResultOverlay/Center/ResultPanel/VBox/FinalScoreLabel")
+@onready var impact_flash = get_node_or_null("Control/ImpactFlash")
 
 @onready var heading_tape: HudHeadingTape = get_node_or_null("Control/Instruments/HeadingTape")
 @onready var attitude_indicator: HudAttitudeIndicator = get_node_or_null("Control/Instruments/Cluster/Dials/AttitudeIndicator")
@@ -28,6 +29,7 @@ class_name HUDController
 
 var ship: Node
 var _last_score := {0: 0, 1: 0}
+var _impact_flash_tween: Tween
 
 func _ready():
 	# Wait one frame to ensure ship is ready and added to group
@@ -170,6 +172,18 @@ func _flash_score_label(label: Label) -> void:
 	tween.tween_property(label, "scale", Vector2(1.4, 1.4), 0.1)
 	tween.tween_property(label, "scale", Vector2(1.0, 1.0), 0.2)
 
+
+func flash_impact(intensity: float) -> void:
+	if not impact_flash or not is_instance_valid(impact_flash):
+		return
+	if _impact_flash_tween and _impact_flash_tween.is_valid():
+		_impact_flash_tween.kill()
+	impact_flash.color = Color(0.72, 0.9, 1.0, lerpf(0.06, 0.24, intensity))
+	impact_flash.visible = true
+	_impact_flash_tween = create_tween()
+	_impact_flash_tween.tween_property(impact_flash, "color:a", 0.0, lerpf(0.08, 0.18, intensity))
+	_impact_flash_tween.tween_callback(func(): impact_flash.visible = false)
+
 func _on_overtime_started():
 	if timer_label and is_instance_valid(timer_label):
 		timer_label.text = "OT"

Game/scripts/game_mode.gd

@@ -17,6 +17,9 @@ var hud: HUDController
 var ball: RigidBody3D
 var ships: Array[Ship] = []
 var _ship_spawn_transforms := {}
+var _hit_stop_generation := 0
+var _hit_stop_active := false
+var _time_scale_before_hit_stop := 1.0
 
 # Shared by modes that keep score (Match, Spectate); Free Play never
 # references this or emits a score_changed signal, and HUDController relies
@@ -102,6 +105,7 @@ func spawn_camera_rig(target: Ship) -> ShipCameraRig:
 	var rig: ShipCameraRig = CAMERA_RIG_SCENE.instantiate()
 	add_child(rig)
 	rig.target = target
+	rig.impact_feedback.connect(_on_player_impact)
 	# Also wires the scene's static HUD (if any) to the same ship, rather
 	# than letting it guess via the "ship" group.
 	if hud:
@@ -109,6 +113,40 @@ func spawn_camera_rig(target: Ship) -> ShipCameraRig:
 	return rig
 
 
+func _on_player_impact(intensity: float) -> void:
+	if hud:
+		hud.flash_impact(intensity)
+	_run_hit_stop(intensity)
+
+
+func _run_hit_stop(intensity: float) -> void:
+	_hit_stop_generation += 1
+	var generation := _hit_stop_generation
+	if not _hit_stop_active:
+		_time_scale_before_hit_stop = Engine.time_scale
+		_hit_stop_active = true
+	Engine.time_scale = minf(
+		Engine.time_scale, lerpf(0.22, 0.06, clampf(intensity, 0.0, 1.0))
+	)
+	await get_tree().create_timer(
+		lerpf(0.025, 0.065, clampf(intensity, 0.0, 1.0)), true, false, true
+	).timeout
+	if generation == _hit_stop_generation:
+		_restore_hit_stop()
+
+
+func _restore_hit_stop() -> void:
+	if not _hit_stop_active:
+		return
+	Engine.time_scale = _time_scale_before_hit_stop
+	_hit_stop_active = false
+
+
+func _exit_tree() -> void:
+	# A scene change during the unscaled timer must never strand global time.
+	_restore_hit_stop()
+
+
 # Given an already-resolved (path, reaction_ticks, action_noise) — callers
 # apply their own GameSettings-override logic first, which differs between
 # modes (Match lets GameSettings override all three fields, Spectate only

Game/scripts/ship.gd

@@ -326,6 +326,14 @@ func _update_movement_vfx() -> void:
 		_engine_cores[i].scale = Vector3.ONE * (0.8 + thrust * 0.3 + (0.25 if turbo else 0.0))
 
 
+func get_speed_ratio() -> float:
+	return clampf(linear_velocity.length() / maxf(max_speed, 0.001), 0.0, 1.0)
+
+
+func is_turbo_active() -> bool:
+	return _current_action.turbo and _current_action.thrust.z > 0.05
+
+
 func _on_body_entered(body: Node) -> void:
 	if not body is Ball:
 		return

Game/scripts/ship_camera.gd

@@ -7,6 +7,7 @@ extends Node3D
 # themselves are camera-free (a headless/AI ship never needs one).
 
 signal camera_mode_changed(is_ball_cam: bool)
+signal impact_feedback(intensity: float)
 
 @export var camera_distance := 8.0
 @export var camera_height := 3.0
@@ -14,8 +15,24 @@ signal camera_mode_changed(is_ball_cam: bool)
 @export var orbit_smoothing := 6.0   # How fast the camera swings around the ship in ball cam
 @export var look_smoothing := 20.0   # How fast the camera re-centres its look target
 @export var min_camera_height := 1.0 # Keeps the camera from dipping through the arena floor
+@export_group("Speed Feel")
+@export var base_fov := 70.0
+@export var speed_fov_add := 11.0
+@export var turbo_fov_kick := 7.0
+@export var turbo_distance_kick := 0.9
+@export var feel_smoothing := 7.0
+@export_group("Impact Shake")
+@export var max_shake_offset := 0.32
+@export var shake_decay := 8.0
 
-var target: Ship
+var target: Ship:
+	set(value):
+		if target == value:
+			return
+		if is_instance_valid(target) and target.ball_contact.is_connected(_on_target_ball_contact):
+			target.ball_contact.disconnect(_on_target_ball_contact)
+		target = value
+		_connect_target()
 var ball_cam_enabled := true
 
 @onready var camera: Camera3D = $Camera3D
@@ -25,11 +42,34 @@ var _ball: Node3D
 # this so the camera swings smoothly around the ship instead of chasing a
 # raw position (which whips when ball and ship are close together).
 var _orbit_dir := Vector3.BACK
+var _turbo_blend := 0.0
+var _effective_distance := 8.0
+var _shake_strength := 0.0
+var _shake_noise := FastNoiseLite.new()
+var _shake_time := 0.0
+var _last_shake_offset := Vector3.ZERO
 
 
 func _ready():
 	# Group lets the HUD discover the rig for the camera-mode instrument
 	add_to_group("ship_camera")
+	camera.fov = base_fov
+	_effective_distance = camera_distance
+	_shake_noise.noise_type = FastNoiseLite.TYPE_SIMPLEX_SMOOTH
+	_shake_noise.frequency = 2.5
+	_connect_target()
+
+
+func _connect_target() -> void:
+	if not is_inside_tree() or not is_instance_valid(target):
+		return
+	if not target.ball_contact.is_connected(_on_target_ball_contact):
+		target.ball_contact.connect(_on_target_ball_contact)
+
+
+func _exit_tree() -> void:
+	if is_instance_valid(target) and target.ball_contact.is_connected(_on_target_ball_contact):
+		target.ball_contact.disconnect(_on_target_ball_contact)
 
 
 func _input(event):
@@ -39,8 +79,14 @@ func _input(event):
 
 
 func _physics_process(delta):
+	# Camera position smoothing operates on the unshaken chase position. Remove
+	# last frame's presentation-only offset first so shake never accumulates or
+	# exceeds its configured amplitude during a low-time-scale hit-stop.
+	camera.global_position -= _last_shake_offset
+	_last_shake_offset = Vector3.ZERO
 	if not is_instance_valid(target):
 		return
+	_update_speed_feel(delta)
 	var ball := _get_ball()
 	if ball_cam_enabled and ball:
 		_update_ball_cam(delta, ball)
@@ -77,11 +123,12 @@ func _update_ball_cam(delta, ball: Node3D):
 		var swing := _orbit_dir.signed_angle_to(flat.normalized(), Vector3.UP)
 		_orbit_dir = _orbit_dir.rotated(Vector3.UP, swing * t).normalized()
 
-	var camera_target_pos := ship_pos + _orbit_dir * camera_distance + Vector3.UP * camera_height
+	var camera_target_pos := ship_pos + _orbit_dir * _effective_distance + Vector3.UP * camera_height
 	camera_target_pos.y = maxf(camera_target_pos.y, min_camera_height)
 
 	var pos_t := 1.0 - exp(-camera_smoothing * delta)
 	camera.global_position = camera.global_position.lerp(camera_target_pos, pos_t)
+	_apply_shake(delta)
 
 	# Look slightly above the ball's centre; look smoothing is faster than
 	# position smoothing so the ball never drifts out of frame while the
@@ -95,11 +142,12 @@ func _update_ship_cam(delta):
 	var ship_forward: Vector3 = -target.global_transform.basis.z
 
 	# Position camera behind and above the ship
-	var camera_target_pos := ship_pos - ship_forward * camera_distance + Vector3.UP * camera_height
+	var camera_target_pos := ship_pos - ship_forward * _effective_distance + Vector3.UP * camera_height
 	camera_target_pos.y = maxf(camera_target_pos.y, min_camera_height)
 
 	var pos_t := 1.0 - exp(-camera_smoothing * delta)
 	camera.global_position = camera.global_position.lerp(camera_target_pos, pos_t)
+	_apply_shake(delta)
 
 	# Look ahead of the ship
 	_smooth_look_at(ship_pos + ship_forward * 10.0, delta)
@@ -115,3 +163,39 @@ func _smooth_look_at(point: Vector3, delta: float) -> void:
 	var look_basis := Basis.looking_at(dir, Vector3.UP)
 	var look_t := 1.0 - exp(-look_smoothing * delta)
 	camera.global_basis = camera.global_basis.slerp(look_basis, look_t).orthonormalized()
+
+
+func _update_speed_feel(delta: float) -> void:
+	var feel_t := 1.0 - exp(-feel_smoothing * delta)
+	var turbo_target := 1.0 if target.is_turbo_active() else 0.0
+	_turbo_blend = lerpf(_turbo_blend, turbo_target, feel_t)
+	var target_fov := base_fov + target.get_speed_ratio() * speed_fov_add + _turbo_blend * turbo_fov_kick
+	camera.fov = lerpf(camera.fov, target_fov, feel_t)
+	_effective_distance = lerpf(
+		_effective_distance, camera_distance + _turbo_blend * turbo_distance_kick, feel_t
+	)
+
+
+func _on_target_ball_contact(intensity: float, _world_position: Vector3) -> void:
+	_shake_strength = maxf(_shake_strength, clampf(intensity, 0.0, 1.0))
+	for device in Input.get_connected_joypads():
+		Input.start_joy_vibration(
+			device, lerpf(0.18, 0.65, intensity), lerpf(0.32, 1.0, intensity),
+			lerpf(0.08, 0.2, intensity)
+		)
+	impact_feedback.emit(intensity)
+
+
+func _apply_shake(delta: float) -> void:
+	if _shake_strength <= 0.001:
+		_shake_strength = 0.0
+		return
+	_shake_time += delta * 60.0
+	var amplitude := max_shake_offset * _shake_strength * _shake_strength
+	var noise := Vector2(
+		_shake_noise.get_noise_1d(_shake_time),
+		_shake_noise.get_noise_1d(_shake_time + 100.0)
+	).limit_length(1.0) * amplitude
+	_last_shake_offset = camera.global_basis.x * noise.x + camera.global_basis.y * noise.y
+	camera.global_position += _last_shake_offset
+	_shake_strength = move_toward(_shake_strength, 0.0, shake_decay * delta)

TODO.md

@@ -17,8 +17,8 @@ The largest gap between this and a AAA-feeling product is presentation, not code
 - [ ] **Audio — there is none.** Zero sound files, zero `AudioStreamPlayer` nodes, no bus layout. Needs: engine hum pitched to throttle, turbo whoosh, ball impacts scaled by collision impulse, wall scrapes, goal explosion, crowd bed, UI clicks, countdown beeps, music. Can be driven off `Ship`'s existing telemetry signals.
 - [x] SSAO/SSIL in the arena Environments — cheapest single perceived-quality win available; grounds the ships against the deck and gives the fillets and goal recesses real depth.
 - [x] VFX on anything that moves: throttle-reactive engine cores and plumes, distinct turbo flames, a speed-scaled ball trail, contact sparks and team-tinted goal bursts.
-- [ ] Impact feedback — screen shake, hit-stop, flash, controller rumble on ball contact.
-- [ ] Camera feel in `ship_camera.gd` — fixed distance/height/FOV today. Speed-based FOV widening, turbo kick, impact shake.
+- [x] Impact feedback — intensity-scaled screen shake, unscaled hit-stop, HUD flash and controller rumble on ball contact.
+- [x] Camera feel in `ship_camera.gd` — speed-based FOV widening, turbo kick-back and decaying impact shake.
 - [ ] Goal celebration sequence: today it's a `print()` and a label scale-pop. Wants an explosion, team-tinted screen flash, camera cut, slow-mo, title card. `HUDController`'s `ResultOverlay` animation is a reasonable template.
 - [x] Local lighting / dynamic GI — four local pitch lights plus SDFGI provide bounce and contact lighting for the runtime-generated arena shell; the shader's `hull_fill` stand-in is retired. (The shell is generated in `_ready`, so it cannot participate in an editor LightmapGI bake.)
 - [x] Dress `arena_03` — its asteroid field now has mining stations, debris clusters and a distant planet.