fix(vfx): remove ball contact sparks

Game/scripts/ship.gd

@@ -119,7 +119,6 @@ const THRUST_THRESHOLD = 1.0         # percent
 var _engine_cores: Array[MeshInstance3D] = []
 var _engine_flames: Array[MeshInstance3D] = []
 var _engine_lights: Array[OmniLight3D] = []
-var _impact_sparks: GPUParticles3D
 
 
 func _ready():
@@ -264,17 +263,6 @@ func _build_movement_vfx() -> void:
 		add_child(light)
 		_engine_lights.append(light)
 
-	_impact_sparks = _make_particles(
-		"ImpactSparks", Color(1.0, 0.72, 0.22, 1.0), Vector2(0.09, 0.3),
-		28, 0.32, Vector3.UP, 180.0, 5.0, 12.0
-	)
-	_impact_sparks.one_shot = true
-	_impact_sparks.explosiveness = 1.0
-	_impact_sparks.local_coords = false
-	_impact_sparks.emitting = false
-	add_child(_impact_sparks)
-
-
 func _vfx_material(color: Color, energy: float) -> StandardMaterial3D:
 	var mat := StandardMaterial3D.new()
 	mat.transparency = BaseMaterial3D.TRANSPARENCY_ALPHA
@@ -287,34 +275,6 @@ func _vfx_material(color: Color, energy: float) -> StandardMaterial3D:
 	return mat
 
 
-func _make_particles(
-	particle_name: String, color: Color, size: Vector2, amount: int,
-	lifetime: float, direction: Vector3, spread: float,
-	velocity_min: float, velocity_max: float
-) -> GPUParticles3D:
-	var quad := QuadMesh.new()
-	quad.size = size
-	quad.material = _vfx_material(color, 2.2)
-	var process := ParticleProcessMaterial.new()
-	process.direction = direction
-	process.spread = spread
-	process.initial_velocity_min = velocity_min
-	process.initial_velocity_max = velocity_max
-	process.gravity = Vector3.ZERO
-	process.scale_min = 0.35
-	process.scale_max = 1.0
-	var particles := GPUParticles3D.new()
-	particles.name = particle_name
-	particles.amount = amount
-	particles.lifetime = lifetime
-	particles.local_coords = true
-	particles.process_material = process
-	particles.draw_pass_1 = quad
-	particles.visibility_aabb = AABB(Vector3(-3, -3, -1), Vector3(6, 6, 12))
-	particles.emitting = false
-	return particles
-
-
 func _update_movement_vfx() -> void:
 	if _engine_flames.is_empty():
 		return
@@ -354,10 +314,6 @@ func _on_body_entered(body: Node) -> void:
 	var relative_speed := (linear_velocity - (body as Ball).linear_velocity).length()
 	var intensity := clampf(inverse_lerp(3.0, 24.0, relative_speed), 0.12, 1.0)
 	var contact_pos := (global_position + (body as Ball).global_position) * 0.5
-	if _impact_sparks:
-		_impact_sparks.position = to_local(contact_pos)
-		_impact_sparks.amount_ratio = lerpf(0.25, 1.0, intensity)
-		_impact_sparks.restart()
 	ball_contact.emit(intensity, contact_pos)
 
 

TODO.md

@@ -16,7 +16,7 @@ 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 simple rear flames, a speed-scaled ball trail, contact sparks and team-tinted goal bursts.
+- [x] VFX on anything that moves: throttle-reactive engine cores and simple rear flames, a speed-scaled ball trail and team-tinted goal bursts.
 - [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.
 - [x] Goal celebration sequence: goal burst, team-tinted flash/title card, dedicated camera cut and slow-motion beat after authoritative score registration and before reset/kickoff.