update

scripts/audio.gd

@@ -17,6 +17,7 @@ signal ready_for_play()
 var sounds: Dictionary = {}
 var music_on := true
 var loaded := false
+var music_loaded := false
 var clacks := 0                       ## Zähler, damit sich das testen lässt
 var last_played := ""                 ## zuletzt gestarteter Klang
 
@@ -63,28 +64,32 @@ func _exit_tree() -> void:
 
 ## Läuft im Thread: nur Rechnen, keine Godot-Knoten anfassen.
 func _build_async() -> void:
-	var pcm: Dictionary = Sfx.build_all()
+	call_deferred("_publish_sfx", Sfx.build_all())
-	pcm["music"] = Sfx.build_music()
+	call_deferred("_publish_music", Sfx.build_music())
-	call_deferred("_finish_build", pcm)
 
-func _finish_build(pcm: Dictionary) -> void:
+## Die kurzen Klänge sind schnell fertig - sie gehen zuerst live.
-	if _thread != null:
+func _publish_sfx(pcm: Dictionary) -> void:
-		_thread.wait_to_finish()
-		_thread = null
 	for name in pcm.keys():
-		var loop: bool = name == "music" or LOOPS.has(name)
+		sounds[name] = Synth.to_stream(pcm[name], LOOPS.has(name))
-		sounds[name] = Synth.to_stream(pcm[name], loop)
-	_music.stream = sounds["music"]
-	_music.volume_db = MUSIC_DB if music_on else -80.0
-	_music.play()
 	_rumble.stream = sounds["rumble"]
 	_rumble.play()
 	_squeal.stream = sounds["squeal"]
 	_squeal.play()
 	loaded = true
-	print("[audio] %d Klänge in %d ms erzeugt" % [sounds.size(), Time.get_ticks_msec() - _t0])
+	print("[audio] %d Klänge in %d ms" % [sounds.size(), Time.get_ticks_msec() - _t0])
 	ready_for_play.emit()
 
+func _publish_music(pcm: PackedByteArray) -> void:
+	if _thread != null:
+		_thread.wait_to_finish()
+		_thread = null
+	sounds["music"] = Synth.to_stream(pcm, true)
+	_music.stream = sounds["music"]
+	_music.volume_db = MUSIC_DB if music_on else -80.0
+	_music.play()
+	music_loaded = true
+	print("[audio] Musik in %d ms" % (Time.get_ticks_msec() - _t0))
+
 func toggle_music() -> bool:
 	music_on = not music_on
 	_music.volume_db = MUSIC_DB if music_on else -80.0

scripts/camera_rig.gd

@@ -11,6 +11,7 @@ var distance := 46.0
 
 var _cam: Camera3D
 var _focus := Vector3.ZERO
+var blocked := false      ## zuletzt an einem Hindernis abgefangen
 
 func _ready() -> void:
 	_cam = Camera3D.new()
@@ -51,11 +52,26 @@ func _process(delta: float) -> void:
 
 	if target:
 		_focus = _focus.lerp(target.global_position, clampf(delta * 5.0, 0.0, 1.0))
+	blocked = false
 	position = _focus
 	var dir := Vector3(0, 0, 1).rotated(Vector3.RIGHT, pitch).rotated(Vector3.UP, yaw)
-	_cam.position = dir * distance
+	var wanted: Vector3 = dir * distance
+	_cam.position = _clip_to_view(wanted)
 	_cam.look_at(global_position + Vector3(0, 2.5, 0), Vector3.UP)
 
+## Zieht die Kamera vor ein Hindernis, statt hindurchzuschauen.
+func _clip_to_view(local_target: Vector3) -> Vector3:
+	var from: Vector3 = global_position + Vector3(0, 2.5, 0)
+	var to: Vector3 = global_position + local_target
+	var space := get_world_3d().direct_space_state
+	var q := PhysicsRayQueryParameters3D.create(from, to, 2)
+	var hit := space.intersect_ray(q)
+	if hit.is_empty():
+		return local_target
+	var p: Vector3 = hit["position"] + (from - hit["position"]).normalized() * 0.7
+	blocked = true
+	return p - global_position
+
 func snap_to(p: Vector3) -> void:
 	_focus = p
 	position = p

scripts/deco.gd

@@ -92,4 +92,15 @@ static func house(wall: Color, roof: Color, w: float, d: float, h: float, chimne
 	if chimney:
 		n.add_child(_mi(box(Vector3(w * 0.16, h * 0.7, w * 0.16)), roof.darkened(0.3),
 			Vector3(w * 0.25, h + h * 0.45, 0)))
+	# Kollision nur fuer die Aussenkamera, damit sie nicht durch Waende schaut
+	var body := StaticBody3D.new()
+	body.collision_layer = 2
+	body.collision_mask = 0
+	var shape := CollisionShape3D.new()
+	var bs := BoxShape3D.new()
+	bs.size = Vector3(w * 1.14, h * 1.6, d * 1.06)
+	shape.shape = bs
+	shape.position = Vector3(0, h * 0.8, 0)
+	body.add_child(shape)
+	n.add_child(body)
 	return n

scripts/game.gd

@@ -22,18 +22,24 @@ const MenuScript = preload("res://scripts/menu.gd")
 
 enum Mode { MENU, SOLO, HOST, CLIENT }
 
-const TRACK_POINTS := [
+## Zwei Weichenpunkte, drei Abschnitte: Talstrecke und Bergstrecke fuehren
-	Vector2(-139, -77), Vector2(-53, -101), Vector2(38, -86), Vector2(110, -48),
+## beide von J1 nach J2, die Heimstrecke zurueck.
-	Vector2(144, 14), Vector2(101, 77), Vector2(14, 96), Vector2(-62, 77),
+const J1 := Vector2(-139, -77)
-	Vector2(-101, 34), Vector2(-154, -14),
+const J2 := Vector2(144, 14)
-]
+const T1 := Vector2(101, -87)     ## Fahrtrichtung an J1
+const T2 := Vector2(-9, 125)      ## Fahrtrichtung an J2
+const SEG_TAL := [J1, Vector2(-53, -101), Vector2(38, -86), Vector2(110, -48), J2]
+const SEG_BERG := [J1, Vector2(-85, -38), Vector2(-20, -14), Vector2(58, -12), Vector2(112, -24), J2]
+const SEG_HEIM := [J2, Vector2(101, 77), Vector2(14, 96), Vector2(-62, 77), Vector2(-101, 34), Vector2(-154, -14), J1]
 
+## name, abschnitt, anteil, produziert, akzeptiert, seite, wand, dach, schornstein
 const STATION_DEFS := [
-	["Waldkirch", 0.04, Cargo.Type.WOOD, [Cargo.Type.GRAIN], 1.0, "c9a06a", "8a4b2f", false],
+	["Waldkirch", 0, 0.10, Cargo.Type.WOOD, [Cargo.Type.GRAIN], 1.0, "c9a06a", "8a4b2f", false],
-	["Kohlberg", 0.22, Cargo.Type.COAL, [], -1.0, "6f6a63", "40393a", true],
+	["Kohlberg", 0, 0.55, Cargo.Type.COAL, [], -1.0, "6f6a63", "40393a", true],
-	["Eisenwerk", 0.40, -1, [Cargo.Type.COAL, Cargo.Type.WOOD], 1.0, "9aa0a6", "55606b", true],
+	["Eisenwerk", 0, 0.88, -1, [Cargo.Type.COAL, Cargo.Type.WOOD], 1.0, "9aa0a6", "55606b", true],
-	["Grüntal", 0.60, Cargo.Type.GRAIN, [], -1.0, "e8ddc4", "b4562f", false],
+	["Grüntal", 2, 0.33, Cargo.Type.GRAIN, [], -1.0, "e8ddc4", "b4562f", false],
-	["Ahornstadt", 0.80, -1, [Cargo.Type.GRAIN, Cargo.Type.WOOD], 1.0, "f0e6d2", "a83b30", true],
+	["Ahornstadt", 2, 0.67, -1, [Cargo.Type.GRAIN, Cargo.Type.WOOD], 1.0, "f0e6d2", "a83b30", true],
+	["Bergblick", 1, 0.50, -1, [], -1.0, "e6dcc2", "5c7a4e", false],
 ]
 
 const WORLD_SEED := 20260828
@@ -42,7 +48,21 @@ const BOARD_INTERVAL := 0.45
 const LOAD_INTERVAL := 0.35
 const DRINK_TIP := 14
 const START_MONEY := 1500
-const POSE_HZ := 15.0
+const POSE_HZ := 20.0
+const SAVE_PATH := "user://save.json"
+const AUTOSAVE_SEC := 20.0
+
+## Meilensteine. "kind" sagt, welcher Zähler zählt.
+const GOALS := [
+	{"id": "tickets10", "text": "10 Tickets kontrollieren", "kind": "tickets", "value": 10, "reward": 250},
+	{"id": "cargo30", "text": "30 Einheiten Fracht liefern", "kind": "cargo", "value": 30, "reward": 400},
+	{"id": "dining", "text": "Einen Speisewagen anhängen", "kind": "dining", "value": 1, "reward": 300},
+	{"id": "berg", "text": "Bergblick anfahren", "kind": "visit", "value": 1, "reward": 500},
+	{"id": "rep15", "text": "Ansehen 15 erreichen", "kind": "rep", "value": 15, "reward": 800},
+	{"id": "tickets60", "text": "60 Tickets kontrollieren", "kind": "tickets", "value": 60, "reward": 900},
+	{"id": "rep40", "text": "Ansehen 40 erreichen", "kind": "rep", "value": 40, "reward": 1500},
+	{"id": "final", "text": "Elektro-Express mit 5 Wagen und Ansehen 60", "kind": "final", "value": 60, "reward": 5000},
+]
 const STATE_HZ := 4.0
 
 var mode := Mode.MENU
@@ -53,6 +73,13 @@ var money := START_MONEY
 var reputation := 0
 var upgrades: Dictionary = {}
 var delivered_units := 0
+var tickets_checked := 0
+var visited: Dictionary = {}          ## Bahnhofsname -> true
+var goals_done: Dictionary = {}       ## Ziel-ID -> true
+var won := false
+var my_name := "Crew"
+var _autosave := AUTOSAVE_SEC
+var _load_on_begin := false
 
 var track: Node3D
 var world: Node3D
@@ -83,6 +110,7 @@ func _ready() -> void:
 	menu = MenuScript.new()
 	add_child(menu)
 	menu.solo_chosen.connect(_start_solo)
+	menu.continue_chosen.connect(_start_continue)
 	menu.host_chosen.connect(_start_host)
 	menu.join_chosen.connect(_start_join)
 	multiplayer.peer_connected.connect(_on_peer_connected)
@@ -104,6 +132,10 @@ func _start_solo() -> void:
 	my_id = 1
 	_begin()
 
+func _start_continue() -> void:
+	_load_on_begin = true
+	_start_solo()
+
 func _start_host(port: int) -> void:
 	var peer := ENetMultiplayerPeer.new()
 	var err := peer.create_server(port, 8)
@@ -140,6 +172,7 @@ func _on_server_gone() -> void:
 		hud.toast("Verbindung zum Host verloren.", Color("ff9a8a"))
 
 func _begin() -> void:
+	my_name = menu.player_name()
 	_rng.seed = WORLD_SEED
 	_build_environment()
 	_build_track()
@@ -152,10 +185,18 @@ func _begin() -> void:
 	_build_ui()
 	audio = AudioScript.new()
 	add_child(audio)
-	players[my_id] = {"s": player.s, "x": player.x, "yaw": 0.0, "carrying": 0, "avatar": null}
+	players[my_id] = _new_player_entry(my_name)
 	menu.hide_menu()
 	player.capture_mouse(true)
 	started = true
+	if _load_on_begin:
+		load_game()
+	if mode == Mode.CLIENT:
+		rpc_id(1, "net_hello", my_name)
+
+func _new_player_entry(pname: String) -> Dictionary:
+	return {"s": 0.0, "x": 0.0, "yaw": 0.0, "carrying": 0, "avatar": null,
+		"name": pname, "tpos": Vector3.ZERO, "tyaw": 0.0}
 
 # --- Aufbau ---------------------------------------------------------------
 
@@ -193,22 +234,26 @@ func _build_environment() -> void:
 func _build_track() -> void:
 	track = TrackScript.new()
 	add_child(track)
-	var pts := PackedVector2Array()
+	var tal: int = track.add_segment("Talstrecke", SEG_TAL, T1, T2)
-	for p in TRACK_POINTS:
+	var berg: int = track.add_segment("Bergstrecke", SEG_BERG, T1, T2)
-		pts.append(p)
+	var heim: int = track.add_segment("Heimstrecke", SEG_HEIM, T2, T1)
-	track.build(pts)
+	track.connect_segments(heim, tal)    # Nachfolger 0 = links
+	track.connect_segments(heim, berg)   # Nachfolger 1 = rechts
+	track.connect_segments(tal, heim)
+	track.connect_segments(berg, heim)
+	track.finish()
 
 func _build_stations() -> void:
-	var l: float = track.length()
 	for d in STATION_DEFS:
 		var st := StationScript.new()
 		add_child(st)
 		var acc: Array[int] = []
-		for t in d[3]:
+		for t in d[4]:
 			acc.append(int(t))
-		st.setup(String(d[0]), l * float(d[1]), int(d[2]), acc)
+		var seg_id := int(d[1])
-		st.build_visuals(track.sample(st.progress), float(d[4]),
+		st.setup(String(d[0]), seg_id, track.seg_length(seg_id) * float(d[2]), int(d[3]), acc)
-			Color(String(d[5])), Color(String(d[6])), bool(d[7]))
+		st.build_visuals(track.sample(seg_id, st.progress), float(d[5]),
+			Color(String(d[6])), Color(String(d[7])), bool(d[8]))
 		if st.produces >= 0:
 			st.stock = 8.0
 		stations.append(st)
@@ -223,8 +268,9 @@ func _build_train() -> void:
 
 ## Stellt den Zug mittig an einen Bahnsteig.
 func _park_at(st) -> void:
-	train.progress = fposmod(st.progress + train.total_length() * 0.5, track.length())
+	train.speed = 0.0
-	train.apply_snapshot(train.progress, 0.0)
+	train.place_head(st.seg, st.progress + train.total_length() * 0.5)
+	train._update_dock(0.0)
 
 func _build_player() -> void:
 	player = PlayerScript.new()
@@ -234,8 +280,8 @@ func _build_player() -> void:
 
 	cam_rig = CameraRig.new()
 	add_child(cam_rig)
-	cam_rig.target = train.followers[0]
+	cam_rig.target = train.cars[0]
-	cam_rig.snap_to(track.sample(train.progress).origin)
+	cam_rig.snap_to(train.cars[0].global_position)
 	player.camera.current = true
 
 func _build_ui() -> void:
@@ -257,6 +303,11 @@ func _process(delta: float) -> void:
 		_spawn_passengers(delta)
 		_update_passengers(delta)
 		_handle_station_stop(delta)
+		_track_visits()
+		_autosave -= delta
+		if _autosave <= 0.0:
+			_autosave = AUTOSAVE_SEC
+			save_game()
 	_handle_hold_actions(delta)
 	_update_audio(delta)
 	_sync_out(delta)
@@ -269,22 +320,38 @@ func _physics_process(delta: float) -> void:
 	var driving: bool = driver_id == my_id and not player.input_locked
 	var th := 0.0
 	var br := false
+	var sw: int = train.switch_choice
 	if driving:
 		th = 1.0 if Input.is_key_pressed(KEY_W) else 0.0
 		br = Input.is_key_pressed(KEY_S) or Input.is_key_pressed(KEY_SPACE)
+		if Input.is_key_pressed(KEY_A):
+			sw = 0
+		elif Input.is_key_pressed(KEY_D):
+			sw = 1
 	if is_server():
 		if driver_id == my_id:
 			train.throttle = th
 			train.braking = br
+			train.switch_choice = sw
 		train.drive(delta)
-	elif driving:
+	else:
-		rpc_id(1, "net_controls", th, br)
+		if driving:
+			rpc_id(1, "net_controls", th, br, sw)
+		train.client_tick(delta)
+
+func _notification(what: int) -> void:
+	if what == NOTIFICATION_WM_CLOSE_REQUEST and started and is_server():
+		save_game()
 
 func _unhandled_input(event: InputEvent) -> void:
 	if not started:
 		return
 	if event is InputEventKey and event.pressed and not event.echo:
 		match event.keycode:
+			KEY_F5:
+				if is_server():
+					save_game()
+					hud.toast("Gespeichert", Color("8fd8ff"))
 			KEY_H:
 				if driver_id == my_id:
 					request("whistle")
@@ -358,13 +425,13 @@ func _sync_out(delta: float) -> void:
 			players[my_id]["x"] = player.x
 			players[my_id]["yaw"] = player.yaw
 			rpc("net_poses", _pose_payload())
+			rpc("net_train", train.seg, train.progress, train.speed, train.switch_choice, train.history)
 		else:
 			rpc_id(1, "net_pose", player.s, player.x, player.yaw)
 	if is_server():
 		_state_timer -= delta
 		if _state_timer <= 0.0:
 			_state_timer = 1.0 / STATE_HZ
-			rpc("net_train", train.progress, train.speed)
 			rpc("net_state", _state_payload())
 			rpc("net_passengers", _passenger_payload())
 
@@ -379,10 +446,15 @@ func _state_payload() -> Dictionary:
 	var stock: Array = []
 	for st in stations:
 		stock.append(st.stock)
+	var names := {}
+	for id in players.keys():
+		names[int(id)] = String(players[id]["name"])
 	return {
 		"money": money, "rep": reputation, "upg": upgrades.keys(),
 		"driver": driver_id, "cargo": train.cargo.duplicate(), "stock": stock,
 		"loco": train.loco_id, "consist": train.consist.duplicate(),
+		"names": names, "goals": goals_done.keys(), "won": won,
+		"tickets": tickets_checked, "delivered": delivered_units,
 	}
 
 func _passenger_payload() -> Array:
@@ -402,7 +474,7 @@ func _passenger_payload() -> Array:
 func net_pose(s: float, x: float, yaw: float) -> void:
 	var id := multiplayer.get_remote_sender_id()
 	if not players.has(id):
-		players[id] = {"s": s, "x": x, "yaw": yaw, "carrying": 0, "avatar": null}
+		players[id] = _new_player_entry("Crew %d" % id)
 	players[id]["s"] = s
 	players[id]["x"] = x
 	players[id]["yaw"] = yaw
@@ -414,7 +486,7 @@ func net_poses(list: Array) -> void:
 		var id := int(e[0])
 		seen[id] = true
 		if not players.has(id):
-			players[id] = {"s": 0.0, "x": 0.0, "yaw": 0.0, "carrying": 0, "avatar": null}
+			players[id] = _new_player_entry("Crew %d" % id)
 		if id != my_id:
 			players[id]["s"] = float(e[1])
 			players[id]["x"] = float(e[2])
@@ -427,8 +499,8 @@ func net_poses(list: Array) -> void:
 			_drop_player(int(id))
 
 @rpc("authority", "call_remote", "unreliable_ordered")
-func net_train(p: float, v: float) -> void:
+func net_train(seg_id: int, p: float, v: float, sw: int, hist: Array) -> void:
-	train.apply_snapshot(p, v)
+	train.apply_snapshot(seg_id, p, v, sw, hist)
 
 @rpc("authority", "call_remote", "reliable")
 func net_state(d: Dictionary) -> void:
@@ -438,6 +510,16 @@ func net_state(d: Dictionary) -> void:
 	for k in d["upg"]:
 		upgrades[String(k)] = true
 	driver_id = int(d["driver"])
+	for id in d["names"].keys():
+		if not players.has(int(id)):
+			players[int(id)] = _new_player_entry(String(d["names"][id]))
+		players[int(id)]["name"] = String(d["names"][id])
+	goals_done.clear()
+	for g in d["goals"]:
+		goals_done[String(g)] = true
+	won = bool(d["won"])
+	tickets_checked = int(d["tickets"])
+	delivered_units = int(d["delivered"])
 	if driver_id != my_id and player.mode == PlayerScript.Mode.DRIVE:
 		player.mode = PlayerScript.Mode.WALK
 	elif driver_id == my_id:
@@ -498,13 +580,25 @@ func net_sfx(name: String, at_loco: bool, db: float) -> void:
 	_play_sfx(name, at_loco, db)
 
 @rpc("any_peer", "call_remote", "unreliable_ordered")
-func net_controls(th: float, br: bool) -> void:
+func net_controls(th: float, br: bool, sw: int) -> void:
 	if not is_server():
 		return
 	if multiplayer.get_remote_sender_id() != driver_id:
 		return
 	train.throttle = th
 	train.braking = br
+	train.switch_choice = sw
+
+@rpc("any_peer", "call_remote", "reliable")
+func net_hello(pname: String) -> void:
+	if not is_server():
+		return
+	var id := multiplayer.get_remote_sender_id()
+	if not players.has(id):
+		players[id] = _new_player_entry(pname)
+	players[id]["name"] = pname
+	_broadcast_toast("%s ist an Bord" % pname, Color("8fd8ff"))
+	_push_state()
 
 @rpc("any_peer", "call_remote", "reliable")
 func net_request(action: String, a: String, b: int, c: int) -> void:
@@ -549,17 +643,17 @@ func _make_passenger(pid: int):
 func _on_peer_connected(id: int) -> void:
 	if not is_server() or not started:
 		return
-	players[id] = {"s": 0.0, "x": 0.0, "yaw": 0.0, "carrying": 0, "avatar": null}
+	players[id] = _new_player_entry("Crew %d" % id)
 	rpc_id(id, "net_state", _state_payload())
 	rpc_id(id, "net_passengers", _passenger_payload())
-	hud.toast("Spieler %d ist an Bord" % id, Color("8fd8ff"))
 
 func _on_peer_disconnected(id: int) -> void:
+	var pname: String = String(players.get(id, {}).get("name", "Crew %d" % id))
 	_drop_player(id)
 	if driver_id == id:
 		driver_id = 0
 	if hud:
-		hud.toast("Spieler %d hat den Zug verlassen" % id, Color("ffd978"))
+		hud.toast("%s hat den Zug verlassen" % pname, Color("ffd978"))
 
 func _drop_player(id: int) -> void:
 	if id == my_id or not players.has(id):
@@ -576,16 +670,22 @@ func _update_avatars() -> void:
 		var e: Dictionary = players[id]
 		if e["avatar"] == null:
 			var av := AvatarScript.new()
-			av.build(int(id), "Crew %d" % int(id))
+			av.build(int(id), String(e["name"]))
 			add_child(av)
 			e["avatar"] = av
 		var av2 = e["avatar"]
 		var loc: Dictionary = train.locate(float(e["s"]))
 		var xf: Transform3D = train.car_transform(int(loc["index"]))
-		av2.global_position = xf * Vector3(float(e["x"]), 1.10, float(loc["local_z"]))
+		# Zielpose im Wagenraum; Bewegung wird geglättet, die Wagenlage nicht
-		av2.global_rotation = Vector3(0, xf.basis.get_euler().y + float(e["yaw"]), 0)
+		var tp: Vector3 = Vector3(float(e["x"]), 1.10, float(loc["local_z"]))
+		var ty: float = float(e["yaw"])
+		var k: float = clampf(get_process_delta_time() * 14.0, 0.0, 1.0)
+		e["tpos"] = (e["tpos"] as Vector3).lerp(tp, k) if e["tpos"] != Vector3.ZERO else tp
+		e["tyaw"] = lerp_angle(float(e["tyaw"]), ty, k)
+		av2.global_position = xf * (e["tpos"] as Vector3)
+		av2.global_rotation = Vector3(0, xf.basis.get_euler().y + float(e["tyaw"]), 0)
 		av2.set_carrying(int(e["carrying"]))
-		av2.set_label("Crew %d%s" % [int(id), "  (Führerstand)" if int(id) == driver_id else ""])
+		av2.set_label("%s%s" % [String(e["name"]), "  (Führerstand)" if int(id) == driver_id else ""])
 
 # --- Fahrgäste -----------------------------------------------------------
 
@@ -613,13 +713,12 @@ func spawn_passenger(idx: int, forced_dest := -1) -> bool:
 	p.fare = _fare(idx, dest)
 	var spot: Vector3 = st.waiting_spots[st.waiting.size()]
 	p.global_position = spot
-	p.global_rotation = Vector3(0, track.sample(st.progress).basis.get_euler().y + PI * 0.5 * st.side, 0)
+	p.global_rotation = Vector3(0, track.sample(st.seg, st.progress).basis.get_euler().y + PI * 0.5 * st.side, 0)
 	st.waiting.append(p)
 	return true
 
 func _fare(a: int, b: int) -> int:
-	var l: float = track.length()
+	var d: float = stations[a].global_position.distance_to(stations[b].global_position) * 1.6
-	var d: float = fposmod(stations[b].progress - stations[a].progress, l)
 	var bonus := 1.0
 	for c in train.cars:
 		if c.id == "saloon":
@@ -749,6 +848,7 @@ func _do_request(peer: int, action: String, a: String, b: int, c: int) -> void:
 		"buy_loco": _srv_buy_loco(peer, a)
 		"buy_car": _srv_buy_car(peer, a)
 		"sell_car": _srv_sell_car(peer, b)
+		"sell_loco": _srv_sell_loco(peer)
 		"buy_upgrade": _srv_buy_upgrade(peer, a)
 		"whistle": _srv_whistle(peer)
 
@@ -796,7 +896,7 @@ func _carrying(peer: int) -> int:
 
 func _set_carrying(peer: int, n: int) -> void:
 	if not players.has(peer):
-		players[peer] = {"s": 0.0, "x": 0.0, "yaw": 0.0, "carrying": 0, "avatar": null}
+		players[peer] = _new_player_entry("Crew %d" % peer)
 	players[peer]["carrying"] = n
 	if peer == my_id:
 		player.carrying = n
@@ -836,6 +936,7 @@ func _srv_use_seat(peer: int, car_index: int, seat_index: int) -> void:
 
 func _check_ticket(p, peer: int) -> void:
 	p.ticket_checked = true
+	tickets_checked += 1
 	money += p.fare
 	_toast_to(peer, "Ticket nach %s  +%d €" % [stations[p.dest_station].station_name, p.fare],
 		Color("aef2a0"))
@@ -849,6 +950,7 @@ func _check_all_tickets(peer: int) -> void:
 	for p in passengers:
 		if p.state == PassengerScript.State.SEATED and not p.ticket_checked:
 			p.ticket_checked = true
+			tickets_checked += 1
 			sum += p.fare
 			n += 1
 			p._refresh_label()
@@ -899,9 +1001,54 @@ func _srv_transfer_one(peer: int) -> void:
 			_push_state()
 
 func _push_state() -> void:
+	if is_server():
+		_check_goals()
 	if mode == Mode.HOST:
 		rpc("net_state", _state_payload())
 
+func _track_visits() -> void:
+	if train.docked_at != null and train.speed < 0.1:
+		var nm: String = train.docked_at.station_name
+		if not visited.has(nm):
+			visited[nm] = true
+			_check_goals()
+
+## Aktuelles Ziel und Fortschritt, für das HUD.
+func current_goal() -> Dictionary:
+	for g in GOALS:
+		if not goals_done.has(String(g["id"])):
+			return {"text": String(g["text"]), "progress": _goal_progress(g), "target": int(g["value"])}
+	return {}
+
+func _goal_progress(g: Dictionary) -> int:
+	match String(g["kind"]):
+		"tickets": return tickets_checked
+		"cargo": return delivered_units
+		"rep": return reputation
+		"dining": return 1 if train.has_dining() else 0
+		"visit": return 1 if visited.has("Bergblick") else 0
+		"final": return reputation if train.loco_id == "express" and train.consist.size() >= 5 else 0
+	return 0
+
+func _check_goals() -> void:
+	for g in GOALS:
+		var id := String(g["id"])
+		if goals_done.has(id):
+			continue
+		if _goal_progress(g) < int(g["value"]):
+			break   # Ziele kommen der Reihe nach
+		goals_done[id] = true
+		money += int(g["reward"])
+		if id == "final":
+			won = true
+			_broadcast_toast("Linie ausgebaut! Ihr habt es geschafft.  +%d €" % int(g["reward"]),
+				Color("ffd978"))
+		else:
+			_broadcast_toast("Ziel erreicht: %s  +%d €" % [String(g["text"]), int(g["reward"])],
+				Color("ffd978"))
+		_broadcast_sfx("bell", false, -8.0)
+		save_game()
+
 # --- Laden ----------------------------------------------------------------
 
 func _open_shop() -> void:
@@ -953,6 +1100,18 @@ func _srv_sell_car(peer: int, index: int) -> void:
 	_broadcast_sfx("coin", false, -5.0)
 	_push_state()
 
+## Die Lok geht zurück ans Depot, der Dampf-Veteran springt ein.
+func _srv_sell_loco(peer: int) -> void:
+	if train.loco_id == "steam":
+		return
+	var d: Dictionary = Defs.LOCOS[train.loco_id]
+	money += int(d["sell"])
+	train.loco_id = "steam"
+	_rebuild_train()
+	_broadcast_toast("Verkauft: %s  +%d €" % [String(d["name"]), int(d["sell"])], Color("ffd978"))
+	_broadcast_sfx("coin", false, -5.0)
+	_push_state()
+
 func _srv_buy_upgrade(peer: int, id: String) -> void:
 	if not Defs.UPGRADES.has(id):
 		return
@@ -986,6 +1145,76 @@ func buy_upgrade(id: String) -> bool:
 	request("buy_upgrade", id)
 	return upgrades.size() != before
 
+# --- Spielstand -------------------------------------------------------------
+
+func save_game() -> void:
+	if not is_server():
+		return
+	var stock: Array = []
+	for st in stations:
+		stock.append(st.stock)
+	var data := {
+		"money": money, "rep": reputation, "upg": upgrades.keys(),
+		"delivered": delivered_units, "tickets": tickets_checked,
+		"visited": visited.keys(), "goals": goals_done.keys(), "won": won,
+		"loco": train.loco_id, "consist": train.consist,
+		"seg": train.seg, "progress": train.progress, "cargo": train.cargo,
+		"stock": stock,
+	}
+	var f := FileAccess.open(SAVE_PATH, FileAccess.WRITE)
+	if f == null:
+		return
+	f.store_string(JSON.stringify(data))
+	f.close()
+
+func load_game() -> bool:
+	if not FileAccess.file_exists(SAVE_PATH):
+		return false
+	var f := FileAccess.open(SAVE_PATH, FileAccess.READ)
+	if f == null:
+		return false
+	var parsed = JSON.parse_string(f.get_as_text())
+	f.close()
+	if not (parsed is Dictionary):
+		return false
+	var d: Dictionary = parsed
+	money = int(d.get("money", START_MONEY))
+	reputation = int(d.get("rep", 0))
+	upgrades.clear()
+	for k in d.get("upg", []):
+		upgrades[String(k)] = true
+	delivered_units = int(d.get("delivered", 0))
+	tickets_checked = int(d.get("tickets", 0))
+	visited.clear()
+	for k in d.get("visited", []):
+		visited[String(k)] = true
+	goals_done.clear()
+	for k in d.get("goals", []):
+		goals_done[String(k)] = true
+	won = bool(d.get("won", false))
+	var loco := String(d.get("loco", "steam"))
+	if Defs.LOCOS.has(loco):
+		train.loco_id = loco
+	var typed: Array[String] = []
+	for c in d.get("consist", []):
+		if Defs.CARS.has(String(c)):
+			typed.append(String(c))
+	train.consist = typed
+	train.cargo.clear()
+	var cargo: Dictionary = d.get("cargo", {})
+	for k in cargo.keys():
+		train.cargo[int(k)] = int(cargo[k])
+	var stock: Array = d.get("stock", [])
+	for i in mini(stock.size(), stations.size()):
+		stations[i].stock = float(stock[i])
+	_rebuild_train()
+	var seg_id := int(d.get("seg", 0))
+	if seg_id >= 0 and seg_id < track.segments.size():
+		train.place_head(seg_id, float(d.get("progress", 0.0)))
+		train._update_dock(0.0)
+	hud.toast("Spielstand geladen", Color("8fd8ff"))
+	return true
+
 func _rebuild_train() -> void:
 	# Sitzende Gaeste zwischenparken, sonst verschwinden sie mit dem alten Wagen.
 	var riders: Array = []
@@ -1005,7 +1234,7 @@ func _rebuild_train() -> void:
 		p.seat_index = int(seat["index"])
 		train.cars[p.seat_car].seats[p.seat_index]["occupant"] = p
 		_finish_boarding(p)
-	cam_rig.target = train.followers[0]
+	cam_rig.target = train.cars[0]
 	player.snap_to_cab()
 	if driver_id == my_id:
 		player.mode = PlayerScript.Mode.DRIVE

scripts/hud.gd

@@ -129,7 +129,7 @@ func refresh(game) -> void:
 		_prompt.text = String(PROMPTS.get(String(h["kind"]), ""))
 
 	if game.player.mode == PlayerScript.Mode.DRIVE:
-		_drive.text = "W Gas    S Bremse    %3.0f km/h" % t.speed_kmh()
+		_drive.text = "W Gas    S Bremse    A/D Weiche    %3.0f km/h" % t.speed_kmh()
 		_drive.add_theme_color_override("font_color",
 			Color("aef2a0") if t.speed > 0.2 else Color("ffd978"))
 	else:

scripts/menu.gd

@@ -2,6 +2,7 @@ extends CanvasLayer
 ## Startmenue: Einzelspieler, Hosten oder einer Sitzung beitreten.
 
 signal solo_chosen()
+signal continue_chosen()
 signal host_chosen(port: int)
 signal join_chosen(address: String, port: int)
 
@@ -11,6 +12,8 @@ var _root: Control
 var _status := Label.new()
 var _addr := LineEdit.new()
 var _port := LineEdit.new()
+var _name := LineEdit.new()
+var _continue: Button
 
 func _ready() -> void:
 	layer = 3
@@ -47,6 +50,14 @@ func _ready() -> void:
 	vb.add_child(sub)
 
 	vb.add_child(_spacer(18))
+	_name.placeholder_text = "Dein Name"
+	_name.text = "Crew"
+	_name.max_length = 16
+	_name.alignment = HORIZONTAL_ALIGNMENT_CENTER
+	vb.add_child(_name)
+	_continue = _button("Weiterspielen", func(): continue_chosen.emit())
+	_continue.visible = FileAccess.file_exists("user://save.json")
+	vb.add_child(_continue)
 	vb.add_child(_button("Einzelspieler", func(): solo_chosen.emit()))
 	vb.add_child(_button("Sitzung hosten", func(): host_chosen.emit(_port_value())))
 
@@ -91,6 +102,10 @@ func _port_value() -> int:
 	var v := int(_port.text)
 	return v if v > 0 else DEFAULT_PORT
 
+func player_name() -> String:
+	var n := _name.text.strip_edges()
+	return n if n != "" else "Crew"
+
 func set_status(text: String) -> void:
 	_status.text = text
 

scripts/sfx.gd

@@ -32,6 +32,30 @@ const PROGRESSION := [
 		"melody": [440.00, 493.88, 587.33, 659.26, 783.99]},
 ]
 
+## Zweiter Teil: geht über Dm7 und Em7, kommt über G6 zurück.
+const PROGRESSION_B := [
+	{"name": "Dm7", "pad": [220.00, 261.63, 293.66, 349.23], "bass": 146.83,
+		"melody": [440.00, 523.25, 587.33, 659.26, 698.46, 783.99]},
+	{"name": "Em7", "pad": [196.00, 246.94, 293.66, 329.63], "bass": 164.81,
+		"melody": [493.88, 587.33, 659.26, 783.99, 880.00]},
+	{"name": "Fmaj7", "pad": [174.61, 220.00, 261.63, 329.63], "bass": 87.31,
+		"melody": [440.00, 523.25, 587.33, 659.26, 783.99, 880.00]},
+	{"name": "G6", "pad": [196.00, 246.94, 293.66, 329.63], "bass": 98.00,
+		"melody": [440.00, 493.88, 587.33, 659.26, 783.99]},
+	{"name": "Am7", "pad": [220.00, 261.63, 329.63, 392.00], "bass": 110.00,
+		"melody": [440.00, 493.88, 523.25, 587.33, 659.26, 783.99]},
+	{"name": "Em7", "pad": [196.00, 246.94, 293.66, 329.63], "bass": 164.81,
+		"melody": [493.88, 587.33, 659.26, 783.99, 880.00]},
+	{"name": "Fmaj7", "pad": [174.61, 220.00, 261.63, 329.63], "bass": 87.31,
+		"melody": [440.00, 523.25, 587.33, 659.26, 783.99, 880.00]},
+	{"name": "G6", "pad": [196.00, 246.94, 293.66, 329.63], "bass": 98.00,
+		"melody": [440.00, 493.88, 587.33, 659.26, 783.99]},
+]
+
+## Reihenfolge der Teile: A, B, A mit anderer Melodie.
+const FORM := [0, 1, 0]
+const SECTION_SEEDS := [7411, 9187, 3323]
+
 static func build_all() -> Dictionary:
 	var rng := RandomNumberGenerator.new()
 	rng.seed = 20260828
@@ -53,26 +77,29 @@ static func build_all() -> Dictionary:
 	}
 
 static func build_music() -> PackedByteArray:
-	var rng := RandomNumberGenerator.new()
+	var section_len := BAR * BARS
-	rng.seed = 7411
+	var loop_len := section_len * FORM.size()
-	var loop_len := BAR * BARS
 	var buf := Synth.buffer(loop_len + 3.0)
+	for sec in FORM.size():
+		var prog: Array = PROGRESSION if FORM[sec] == 0 else PROGRESSION_B
+		var rng := RandomNumberGenerator.new()
+		rng.seed = int(SECTION_SEEDS[sec])
+		_render_section(buf, sec * section_len, prog, rng)
+	return Synth.to_pcm(Synth.seamless(buf, loop_len))
 
+static func _render_section(buf: PackedFloat32Array, offset: float, prog: Array,
+		rng: RandomNumberGenerator) -> void:
 	for b in BARS:
-		var t0 := b * BAR
+		var t0 := offset + b * BAR
-		var stage: Dictionary = PROGRESSION[b]
+		var stage: Dictionary = prog[b]
 		var pad: Array = stage["pad"]
 		var bass: float = float(stage["bass"])
 		var melody: Array = stage["melody"]
-
-		# Flächen, leicht überlappend für weiche Übergänge
 		for i in pad.size():
 			var amp: float = 0.19 / (1.0 + i * 0.4)
 			Synth.add_pad(buf, t0 - 0.45, float(pad[i]), BAR + 1.0, amp, 1.2)
-		# Bass: Grundton auf 1, Quinte auf 3
 		Synth.add_tone(buf, t0, bass, 2.3, 0.36, 1.4, [1.0, 0.38, 0.12], 0.01)
 		Synth.add_tone(buf, t0 + BEAT * 2.0, bass * 1.5, 1.7, 0.20, 1.8, [1.0, 0.28], 0.01)
-		# Melodie: sparsame Glockentöne, immer aus dem Akkord
 		var beats := [0.0, 1.5, 2.5] if b % 2 == 0 else [0.5, 2.0, 3.0]
 		for k in beats.size():
 			if rng.randf() < 0.3:
@@ -80,13 +107,10 @@ static func build_music() -> PackedByteArray:
 			var f: float = float(melody[rng.randi() % melody.size()])
 			Synth.add_tone(buf, t0 + float(beats[k]) * BEAT, f, 2.4,
 				0.11, 2.2, [1.0, 0.45, 0.18, 0.07], 0.006)
-		# Sehr leiser Shaker auf jedem Schlag
 		for beat in 4:
 			Synth.add_noise(buf, t0 + beat * BEAT, 0.12,
 				0.032 if beat % 2 == 1 else 0.020, 34.0, 0.62, rng)
 
-	return Synth.to_pcm(Synth.seamless(buf, loop_len))
-
 # --- Einzelklänge ---------------------------------------------------------
 
 ## Ein Radstoß: tiefer Schlag, mittleres Klopfen, kurzer Metallanteil.

scripts/shop.gd

@@ -181,8 +181,12 @@ func _car_rows() -> Array:
 func _consist_rows() -> Array:
 	var rows: Array = []
 	var d: Dictionary = Defs.LOCOS[_game.train.loco_id]
-	rows.append(_row(String(d["name"]), "Lok - lässt sich nur ersetzen, nicht verkaufen",
+	var is_steam: bool = _game.train.loco_id == "steam"
-		"", "", false, func(): pass))
+	rows.append(_row(String(d["name"]),
+		"Lok - beim Verkauf springt der Dampf-Veteran ein" if not is_steam else "Lok - die Grundausstattung bleibt",
+		"" if is_steam else "Rücknahme %d €" % int(d["sell"]),
+		"Verkaufen", not is_steam,
+		func(): _game.request("sell_loco"); _rebuild()))
 	var list: Array = _game.train.consist
 	for i in list.size():
 		var cid: String = list[i]

scripts/station.gd

@@ -9,6 +9,7 @@ const PLATFORM_LEN := 44.0
 const PLATFORM_H := 0.95
 
 var station_name := ""
+var seg := 0
 var progress := 0.0
 var side := 1.0
 var produces := -1
@@ -19,8 +20,9 @@ var rate := 0.55
 var waiting_spots: Array[Vector3] = []   ## Weltpositionen auf dem Bahnsteig
 var waiting: Array = []                  ## wartende Passagiere
 
-func setup(nm: String, prog: float, prod: int, acc: Array[int]) -> void:
+func setup(nm: String, seg_id: int, prog: float, prod: int, acc: Array[int]) -> void:
 	station_name = nm
+	seg = seg_id
 	progress = prog
 	produces = prod
 	accepts = acc

scripts/track.gd

@@ -1,5 +1,6 @@
 extends Node3D
-## Baut aus 2D-Stuetzpunkten eine geschlossene Gleisschleife inkl. Optik.
+## Streckennetz aus Abschnitten. Ein Abschnitt hat einen oder zwei
+## Nachfolger - bei zweien steht dort eine Weiche.
 
 const Mat = preload("res://scripts/mat.gd")
 const Deco = preload("res://scripts/deco.gd")
@@ -9,37 +10,69 @@ const SLEEPER := Color("5e4130")
 const RAIL := Color("9a9da2")
 const STEP := 1.2
 
-var path: Path3D
+## Jeder Eintrag: { "name", "curve": Curve3D, "length", "next": [ids], "prev": [ids] }
+var segments: Array = []
 
-func build(points: PackedVector2Array) -> void:
+## Abschnitt anlegen. Anfangs- und Endrichtung werden vorgegeben, damit
-	path = Path3D.new()
+## sich mehrere Abschnitte an einer Weiche ohne Knick treffen.
-	path.name = "TrackPath"
+func add_segment(seg_name: String, points: Array, t_start: Vector2, t_end: Vector2) -> int:
 	var c := Curve3D.new()
 	var n := points.size()
-	# Catmull-Rom Tangenten -> weiche, geschlossene Schleife.
+	for i in n:
-	for i in n + 1:
+		var p: Vector2 = points[i]
-		var idx := i % n
+		var t: Vector2
-		var prev := points[(idx - 1 + n) % n]
+		if i == 0:
-		var nxt := points[(idx + 1) % n]
+			t = t_start.normalized() * p.distance_to(points[1]) / 3.0
-		var t := (nxt - prev) / 6.0
+		elif i == n - 1:
-		var p := points[idx]
+			t = t_end.normalized() * p.distance_to(points[n - 2]) / 3.0
+		else:
+			t = (points[i + 1] - points[i - 1]) / 6.0
 		c.add_point(Vector3(p.x, 0, p.y), Vector3(-t.x, 0, -t.y), Vector3(t.x, 0, t.y))
-	path.curve = c
+	segments.append({"name": seg_name, "curve": c, "length": c.get_baked_length(),
-	add_child(path)
+		"next": [], "prev": []})
-	_build_visuals()
+	return segments.size() - 1
 
-func length() -> float:
+func connect_segments(from: int, to: int) -> void:
-	return path.curve.get_baked_length()
+	segments[from]["next"].append(to)
+	segments[to]["prev"].append(from)
 
-func sample(offset: float) -> Transform3D:
+func finish() -> void:
-	return path.curve.sample_baked_with_rotation(fposmod(offset, length()), true, true)
+	for i in segments.size():
+		_build_visuals(i)
 
-func _build_visuals() -> void:
+func seg_length(i: int) -> float:
-	var count := int(length() / STEP)
+	return float(segments[i]["length"])
+
+func seg_name(i: int) -> String:
+	return String(segments[i]["name"])
+
+func next_of(i: int) -> Array:
+	return segments[i]["next"]
+
+func prev_of(i: int) -> Array:
+	return segments[i]["prev"]
+
+func is_switch(i: int) -> bool:
+	return segments[i]["next"].size() > 1
+
+func sample(i: int, offset: float) -> Transform3D:
+	var c: Curve3D = segments[i]["curve"]
+	return c.sample_baked_with_rotation(clampf(offset, 0.0, seg_length(i)), true, false)
+
+## Nächster Punkt auf irgendeinem Abschnitt - für die Deko-Verteilung.
+func distance_to_track(p: Vector2) -> float:
+	var best := INF
+	for s in segments:
+		var c: Curve3D = s["curve"]
+		var q: Vector3 = c.get_closest_point(Vector3(p.x, 0, p.y))
+		best = minf(best, Vector2(q.x, q.z).distance_to(p))
+	return best
+
+func _build_visuals(i: int) -> void:
+	var count := int(seg_length(i) / STEP)
 	var xf: Array[Transform3D] = []
-	for i in count:
+	for k in count:
-		xf.append(sample(i * STEP))
+		xf.append(sample(i, k * STEP + STEP * 0.5))
-
 	_multi(Deco.box(Vector3(2.7, 0.16, STEP * 1.12)), BALLAST, xf, [Vector3(0, 0.08, 0)])
 	_multi(Deco.box(Vector3(2.1, 0.09, 0.34)), SLEEPER, xf, [Vector3(0, 0.20, 0)])
 	_multi(Deco.box(Vector3(0.09, 0.11, STEP * 1.08)), RAIL, xf,

scripts/train.gd

@@ -1,6 +1,6 @@
 extends Node3D
-## Der Zugverband: Lok + Waggons auf der Strecke, Fahrphysik,
+## Der Zugverband auf dem Streckennetz: Fahrphysik, Weichenwahl und
-## und die Abbildung "Laengsposition im Zug" -> Weltkoordinate.
+## die Abbildung "Laengsposition im Zug" -> Weltkoordinate.
 
 const CarScene = preload("res://scripts/car.gd")
 const Defs = preload("res://scripts/car_defs.gd")
@@ -8,25 +8,33 @@ const Cargo = preload("res://scripts/cargo.gd")
 
 signal consist_changed()
 
-const GAP := 0.75              ## Abstand zwischen zwei Waggons
+const GAP := 0.75
 const DRAG := 0.6
 const DOCK_RANGE := 3.0
+const PLATFORM_HALF := 18.0    ## Bahnsteig reicht so weit um seine Mitte
+const HISTORY := 6            ## so viele Abschnitte merken wir uns rückwärts
 
 var loco_id := "steam"
-var consist: Array[String] = []   ## nur die Waggons, ohne Lok
+var consist: Array[String] = []
-var cars: Array = []              ## Car-Knoten, Index 0 = Lok
+var cars: Array = []
-var followers: Array[PathFollow3D] = []
 
-var progress := 0.0               ## Position der Zugspitze auf der Kurve
+var seg := 0                  ## Abschnitt der Zugspitze
+var progress := 0.0           ## Position der Spitze auf dem Abschnitt
+var history: Array = []       ## zuletzt befahrene Abschnitte, ältester zuerst
+var switch_choice := 0        ## 0 = links/erster Nachfolger, 1 = rechts
 var speed := 0.0
 var throttle := 0.0
 var braking := false
-var cargo: Dictionary = {}        ## Cargo.Type -> int
+var cargo: Dictionary = {}
 var stations: Array = []
 var docked_at: Node = null
+var sway_enabled := true
 
 var _track
 var _stand_time := 0.0
+var _last_yaw := 0.0
+var _roll := 0.0
+var _time := 0.0
 
 func setup(track, station_list: Array) -> void:
 	_track = track
@@ -68,14 +76,12 @@ func seat_count() -> int:
 		n += c.seats.size()
 	return n
 
-# --- Verband aufbauen -----------------------------------------------------
+# --- Verband --------------------------------------------------------------
 
 func rebuild() -> void:
-	for f in followers:
+	for c in cars:
-		f.queue_free()
+		c.queue_free()
-	followers.clear()
 	cars.clear()
-
 	var ids: Array[String] = [loco_id]
 	ids.append_array(consist)
 	var s := 0.0
@@ -85,16 +91,9 @@ func rebuild() -> void:
 		car.index = i
 		car.center_s = s - car.length * 0.5
 		s = car.center_s - car.length * 0.5 - GAP
-		var f := PathFollow3D.new()
+		add_child(car)
-		f.loop = true
-		f.rotation_mode = PathFollow3D.ROTATION_Y
-		f.use_model_front = true
-		f.cubic_interp = true
-		f.add_child(car)
-		_track.path.add_child(f)
-		followers.append(f)
 		cars.append(car)
-	_sync_followers()
+	_place_cars(0.0)
 	refresh_cargo_visuals()
 	consist_changed.emit()
 
@@ -102,9 +101,8 @@ func total_length() -> float:
 	if cars.is_empty():
 		return 0.0
 	var last = cars[cars.size() - 1]
-	return abs(last.center_s - last.length * 0.5)
+	return absf(last.center_s - last.length * 0.5)
 
-## Begehbarer Bereich als [hinten, vorne] in Zug-Laengskoordinaten.
 func walk_range() -> Vector2:
 	if cars.is_empty():
 		return Vector2.ZERO
@@ -112,7 +110,6 @@ func walk_range() -> Vector2:
 	var back = cars[cars.size() - 1]
 	return Vector2(back.center_s + back.inner_z0 + 0.35, front.center_s + front.inner_z1 - 0.35)
 
-## Findet den Waggon zu einer Laengsposition.
 func locate(s: float) -> Dictionary:
 	var best := 0
 	var best_d := INF
@@ -122,7 +119,7 @@ func locate(s: float) -> Dictionary:
 		var hi: float = c.center_s + c.inner_z1
 		if s >= lo and s <= hi:
 			return {"index": i, "local_z": s - c.center_s, "gangway": false}
-		var d: float = min(absf(s - lo), absf(s - hi))
+		var d: float = minf(absf(s - lo), absf(s - hi))
 		if d < best_d:
 			best_d = d
 			best = i
@@ -130,18 +127,95 @@ func locate(s: float) -> Dictionary:
 	return {"index": best, "local_z": s - c2.center_s, "gangway": true}
 
 func car_transform(i: int) -> Transform3D:
-	return followers[i].global_transform
+	return cars[i].global_transform
 
-## Weltposition eines Punktes im Zug (x quer, y hoch, s laengs).
 func world_point(s: float, x: float, y: float) -> Transform3D:
 	var loc := locate(s)
-	var xf: Transform3D = car_transform(int(loc["index"]))
+	return car_transform(int(loc["index"])).translated_local(Vector3(x, y, float(loc["local_z"])))
-	return xf.translated_local(Vector3(x, y, float(loc["local_z"])))
 
-func _sync_followers() -> void:
+# --- Position auf dem Netz -----------------------------------------------
-	var l: float = _track.length()
+
+## Spitze setzen und die Historie rückwärts auffüllen, damit auch der
+## letzte Wagen einen Abschnitt unter sich hat.
+func place_head(seg_id: int, prog: float) -> void:
+	seg = seg_id
+	progress = prog
+	while progress >= _track.seg_length(seg):
+		progress -= _track.seg_length(seg)
+		var nxt: Array = _track.next_of(seg)
+		history.append(seg)
+		seg = nxt[mini(switch_choice, nxt.size() - 1)]
+	history.clear()
+	var s := seg
+	for i in HISTORY:
+		var prev: Array = _track.prev_of(s)
+		if prev.is_empty():
+			break
+		s = prev[0]
+		history.push_front(s)
+	_place_cars(0.0)
+
+## Abschnitt und Position eines Punktes, der d Meter hinter der Spitze liegt.
+func point_behind(d: float) -> Array:
+	var s := seg
+	var p := progress - d
+	var k := history.size()
+	while p < 0.0 and k > 0:
+		k -= 1
+		s = history[k]
+		p += _track.seg_length(s)
+	return [s, maxf(p, 0.0)]
+
+## Weltlage eines Punktes d Meter hinter der Spitze.
+func transform_behind(d: float) -> Transform3D:
+	var sp := point_behind(d)
+	return _track.sample(int(sp[0]), float(sp[1]))
+
+func _advance() -> void:
+	while progress >= _track.seg_length(seg):
+		progress -= _track.seg_length(seg)
+		var nxt: Array = _track.next_of(seg)
+		if nxt.is_empty():
+			progress = _track.seg_length(seg)
+			speed = 0.0
+			return
+		history.append(seg)
+		if history.size() > HISTORY:
+			history.pop_front()
+		seg = nxt[mini(switch_choice, nxt.size() - 1)]
+
+## Der nächste Abschnitt mit Weiche, den die Spitze erreicht - oder -1.
+func upcoming_switch() -> int:
+	var s := seg
+	for i in 3:
+		if _track.is_switch(s):
+			return s
+		var nxt: Array = _track.next_of(s)
+		if nxt.is_empty():
+			return -1
+		s = nxt[0]
+	return -1
+
+func _place_cars(delta: float) -> void:
+	_time += delta
+	var f: float = clampf(speed / maxf(max_speed(), 1.0), 0.0, 1.0)
+	var head_xf: Transform3D = _track.sample(seg, progress)
+	var yaw: float = head_xf.basis.get_euler().y
+	if delta > 0.0:
+		var rate: float = wrapf(yaw - _last_yaw, -PI, PI) / delta
+		var target: float = clampf(-speed * rate * 0.018, -0.05, 0.05)
+		_roll = lerpf(_roll, target, clampf(delta * 3.0, 0.0, 1.0))
+	_last_yaw = yaw
 	for i in cars.size():
-		followers[i].progress = fposmod(progress + cars[i].center_s, l)
+		var car = cars[i]
+		var xf: Transform3D = transform_behind(-car.center_s)
+		if sway_enabled and speed > 0.2:
+			var ph: float = float(i) * 1.9
+			var roll: float = _roll + sin(_time * 1.7 + ph) * 0.006 * f
+			var pitch: float = sin(_time * 2.9 + ph) * 0.003 * f
+			var bounce: float = sin(_time * 3.3 + ph) * 0.014 * f
+			xf = xf * Transform3D(Basis.from_euler(Vector3(pitch, 0.0, roll)), Vector3(0, bounce, 0))
+		car.global_transform = xf
 
 # --- Ladung ---------------------------------------------------------------
 
@@ -188,39 +262,80 @@ func drive(delta: float) -> void:
 		speed = minf(speed + accel() * throttle * delta, max_speed())
 	else:
 		speed = maxf(speed - DRAG * delta, 0.0)
-	progress = fposmod(progress + speed * delta, _track.length())
+	progress += speed * delta
-	_sync_followers()
+	_advance()
+	_place_cars(delta)
 	_update_dock(delta)
 
-## Nur Anzeige aktualisieren (Clients im Netzspiel).
+## Client: Server-Stand übernehmen, dazwischen selbst weiterrechnen.
-func apply_snapshot(p: float, v: float) -> void:
+func apply_snapshot(seg_id: int, prog: float, v: float, sw: int, hist: Array) -> void:
-	progress = p
+	switch_choice = sw
+	if seg_id != seg:
+		seg = seg_id
+		progress = prog
+		history = hist.duplicate()
+	else:
+		progress = lerpf(progress, prog, 0.4)
 	speed = v
-	_sync_followers()
+
-	_update_dock(0.0)
+func client_tick(delta: float) -> void:
+	progress += speed * delta
+	_advance()
+	_place_cars(delta)
+	_update_dock(delta)
 
 func _update_dock(delta: float) -> void:
 	var near := nearest_station()
 	var st: Node = near[0]
-	var dist: float = near[1]
 	if st == null:
 		return
-	if speed > 0.15 or dist > DOCK_RANGE:
+	if speed > 0.15 or float(near[1]) > DOCK_RANGE:
 		_stand_time = 0.0
 		docked_at = null
 		return
 	_stand_time += delta
 	docked_at = st
 
-## Abstand eines Bahnhofs zum Zug. 0, solange der Bahnsteig neben dem
+## Abstand eines Bahnhofs zum Zug entlang der Strecke. 0, solange der
-## Zug liegt - sonst waere ein langer Zug nie richtig am Bahnsteig.
+## Bahnsteig neben dem Zug liegt.
 func station_gap(st) -> float:
-	var l: float = _track.length()
+	var ahead := distance_ahead(st)
-	var behind: float = fposmod(progress - st.progress, l)
+	if ahead == 0.0:
-	var len_train: float = total_length()
-	if behind <= len_train:
 		return 0.0
-	return minf(behind - len_train, l - behind)
+	var behind := _distance_behind(st)
+	if behind >= 0.0:
+		return maxf(behind - total_length() - PLATFORM_HALF, 0.0)
+	return maxf(ahead - PLATFORM_HALF, 0.0)
+
+## Wie weit vor der Spitze liegt der Bahnhof, entlang der gewählten Route?
+## 0 bedeutet: neben dem Zug oder direkt an der Spitze. INF: nicht auf dem Weg.
+func distance_ahead(st) -> float:
+	var behind := _distance_behind(st)
+	if behind >= 0.0 and behind <= total_length():
+		return 0.0
+	var s := seg
+	var d := -progress
+	for i in 4:
+		if st.seg == s and (i > 0 or st.progress >= progress):
+			return maxf(d + st.progress, 0.0)
+		d += _track.seg_length(s)
+		var nxt: Array = _track.next_of(s)
+		if nxt.is_empty():
+			break
+		s = nxt[mini(switch_choice, nxt.size() - 1)]
+	return INF
+
+## Abstand von der Spitze rückwärts bis zum Bahnhof, oder -1.
+func _distance_behind(st) -> float:
+	if st.seg == seg and st.progress <= progress:
+		return progress - st.progress
+	var d := progress
+	for k in range(history.size() - 1, -1, -1):
+		var s: int = history[k]
+		if st.seg == s:
+			return d + (_track.seg_length(s) - st.progress)
+		d += _track.seg_length(s)
+	return -1.0
 
 func nearest_station() -> Array:
 	var best: Node = null
@@ -235,10 +350,11 @@ func nearest_station() -> Array:
 func next_station() -> Array:
 	var best: Node = null
 	var best_d := INF
-	var l: float = _track.length()
 	for s in stations:
-		var d: float = fposmod(s.progress - progress, l)
+		var d: float = distance_ahead(s)
-		if d < best_d:
+		if d > 0.0 and d < best_d:
 			best_d = d
 			best = s
+	if best == null:
+		return nearest_station()
 	return [best, best_d]

scripts/world.gd

@@ -68,8 +68,7 @@ func _scatter(track, stations: Array) -> void:
 	while placed < 620 and tries < 12000:
 		tries += 1
 		var p := Vector2(_rng.randf_range(-EXTENT, EXTENT), _rng.randf_range(-EXTENT, EXTENT))
-		var closest: Vector3 = track.path.curve.get_closest_point(Vector3(p.x, 0, p.y))
+		if track.distance_to_track(p) < 11.0:
-		if Vector2(closest.x, closest.z).distance_to(p) < 11.0:
 			continue
 		if p.distance_to(Vector2(-230, 150)) < 78.0:
 			continue

tests/audio_test.gd

@@ -7,6 +7,7 @@ var ok := 0
 var fail := 0
 var worst := 0.0
 var elapsed := 0.0
+var sfx_first := false
 
 func chk(n: String, c: bool, i := "") -> void:
 	if c: ok += 1; print("  OK   %s %s" % [n, i])
@@ -23,11 +24,14 @@ func _process(d):
 	if not main.started:
 		main._start_solo()
 		return
-	if not main.audio.loaded:
+	if not main.audio.music_loaded:
 		elapsed += d
 		worst = maxf(worst, d)
+		if main.audio.loaded:
+			sfx_first = true
 		return
 	if step == 0:
+		chk("Klänge vor der Musik verfügbar", sfx_first)
 		chk("Kein Ruckler beim Erzeugen", worst < 0.2,
 			"längster Frame %.0f ms in %.1f s Ladezeit" % [worst * 1000.0, elapsed])
 	if wait > 0.0:
@@ -56,7 +60,7 @@ func _process(d):
 			chk("Thread beendet", a._thread == null)
 			var m: AudioStreamWAV = a._music.stream
 			chk("Musik ist eine Schleife", m.loop_mode == AudioStreamWAV.LOOP_FORWARD)
-			chk("Musik lang genug", m.data.size() / 2 > 20 * 22050,
+			chk("Musik hat drei Teile", m.data.size() / 2 > 75 * 22050,
 				"%.1f s" % (m.data.size() / 2.0 / 22050.0))
 			chk("Musik nicht stumm", _peak(m) > 3000, "peak=%d" % _peak(m))
 			chk("Rumble läuft leise", a._rumble.playing and a._rumble.volume_db < -40.0,
@@ -134,7 +138,7 @@ func _peak(w: AudioStreamWAV) -> int:
 func _check_harmony() -> void:
 	var Sfx = load("res://scripts/sfx.gd")
 	var bad: Array[String] = []
-	for stage in Sfx.PROGRESSION:
+	for stage in Sfx.PROGRESSION + Sfx.PROGRESSION_B:
 		var voices: Array[float] = []
 		for f in stage["pad"]:
 			voices.append(float(f))

tests/net_test.gd

@@ -31,6 +31,7 @@ func _process(d):
 		if role == "host":
 			main._start_host(7788)
 		elif role == "client" and step == 0:
+			main.menu._name.text = "Tester"
 			main._start_join("127.0.0.1", 7788)
 			step = 1
 		return
@@ -42,14 +43,24 @@ func _process(d):
 	else:
 		_client_step()
 
+func _key(c: int, d: bool) -> void:
+	var e := InputEventKey.new(); e.physical_keycode = c; e.keycode = c; e.pressed = d
+	Input.parse_input_event(e)
+
 func _host_step() -> void:
 	match step:
 		0:
 			print("[host] Sitzung gestartet")
 			for i in 4:
 				main.spawn_passenger(0, 2)
-			wait = 30.0
+			wait = 16.0
 		1:
+			# Host faehrt los, der Client soll das weich sehen
+			main._srv_toggle_drive(1)
+			_key(KEY_W, true)
+			wait = 20.0
+		2:
+			_key(KEY_W, false)
 			print("[host] Ende. money=%d driver=%d" % [main.money, main.driver_id])
 			get_tree().quit()
 	step += 1
@@ -59,7 +70,7 @@ func _client_step() -> void:
 		1:
 			wait = 6.0
 		2:
-			chk("Welt gebaut", main.stations.size() == 5)
+			chk("Welt gebaut", main.stations.size() == 6)
 			chk("Zug übernommen", main.train.cars.size() == 3, "cars=%d" % main.train.cars.size())
 			chk("Eigene Peer-ID", main.my_id > 1)
 			chk("Fahrgäste sichtbar", main.passengers.size() >= 4, "n=%d" % main.passengers.size())
@@ -69,6 +80,11 @@ func _client_step() -> void:
 					seated += 1
 			chk("Gäste sitzen", seated >= 4, "seated=%d" % seated)
 			chk("Geld synchron", main.money == 1500)
+			chk("Eigener Name beim Host angekommen",
+				String(main.players[main.my_id]["name"]) == "Tester",
+				"%s" % main.players[main.my_id]["name"])
+			var host_av = main.players.get(1, {}).get("avatar")
+			chk("Avatar des Hosts sichtbar", host_av != null)
 			main.request("drive")
 			wait = 1.5
 		3:
@@ -96,6 +112,36 @@ func _client_step() -> void:
 			wait = 2.0
 		6:
 			chk("Kein Selbstlauf ohne Gas", main.train.speed < 0.01)
+			main.request("drive")   # Steuerung abgeben, der Host faehrt gleich
+			_measuring = true
+			wait = 12.0
+		7:
+			_measuring = false
+			chk("Zug beim Client in Fahrt", _top_speed > 3.0, "v=%.1f" % _top_speed)
+			chk("Zug beim Client ruckelfrei", _frames > 100 and _jumps * 20 < _frames,
+				"%d Sprünge in %d Frames, größter %.2f m" % [_jumps, _frames, _worst])
 			print("[client] == %d ok, %d fail ==" % [ok, fail])
 			get_tree().quit(1 if fail > 0 else 0)
 	step += 1
+
+var _measuring := false
+var _last := Vector3.ZERO
+var _frames := 0
+var _jumps := 0
+var _worst := 0.0
+var _top_speed := 0.0
+
+func _physics_process(d: float) -> void:
+	if not _measuring or main == null or not main.started:
+		return
+	var t = main.train
+	var p: Vector3 = t.cars[0].global_position
+	if _last != Vector3.ZERO and t.speed > 1.0:
+		_frames += 1
+		var moved := p.distance_to(_last)
+		var expected: float = t.speed * d
+		_worst = maxf(_worst, absf(moved - expected))
+		if absf(moved - expected) > 0.6:
+			_jumps += 1
+	_top_speed = maxf(_top_speed, t.speed)
+	_last = p

tests/run.sh

@@ -27,6 +27,12 @@ install_test tests/input_test.gd
 "$GODOT" --path . --resolution 1280x720 2>&1 | grep -E "OK|FAIL|=="
 INPUT=${PIPESTATUS[0]}
 
+echo
+echo "=== Weichen-Tests ==="
+install_test tests/switch_test.gd
+"$GODOT" --path . --resolution 1280x720 2>&1 | grep -E "OK|FAIL|=="
+SWITCH=${PIPESTATUS[0]}
+
 echo
 echo "=== Klang-Tests ==="
 install_test tests/audio_test.gd
@@ -50,5 +56,5 @@ NET=${PIPESTATUS[0]}
 wait $HOST 2>/dev/null
 
 echo
-[ "$SOLO" -eq 0 ] && [ "$INPUT" -eq 0 ] && [ "$DIR" -eq 0 ] && [ "$AUDIO" -eq 0 ] && [ "$NET" -eq 0 ] && echo "Alle Tests bestanden." || echo "Es sind Tests fehlgeschlagen."
+[ "$SOLO" -eq 0 ] && [ "$SWITCH" -eq 0 ] && [ "$INPUT" -eq 0 ] && [ "$DIR" -eq 0 ] && [ "$AUDIO" -eq 0 ] && [ "$NET" -eq 0 ] && echo "Alle Tests bestanden." || echo "Es sind Tests fehlgeschlagen."
-exit $(( SOLO || INPUT || DIR || AUDIO || NET ))
+exit $(( SOLO || SWITCH || INPUT || DIR || AUDIO || NET ))

tests/solo_test.gd

@@ -112,6 +112,36 @@ func _process(d):
 			var before = main.train.consist.size()
 			main.sell_car(0)
 			chk("Wagen verkauft", main.train.consist.size() == before - 1)
+			# Lok verkaufen: Dampf-Veteran springt ein, Geld kommt zurueck
+			var m_before = main.money
+			main.request("sell_loco")
+			chk("Lok verkauft", main.train.loco_id == "steam", "loco=%s" % main.train.loco_id)
+			chk("Rücknahme gutgeschrieben", main.money - m_before == 6600, "+%d €" % (main.money - m_before))
+			main.buy_loco("express")
+			# Speichern und Laden
+			main.save_game()
+			var saved_money = main.money
+			var saved_consist = main.train.consist.duplicate()
+			var saved_seg = main.train.seg
+			var saved_prog = main.train.progress
+			main.money = 1
+			main.train.consist = ["coach"] as Array[String]
+			main.train.loco_id = "steam"
+			main._rebuild_train()
+			chk("Spielstand geladen", main.load_game())
+			chk("Geld wiederhergestellt", main.money == saved_money, "%d vs %d" % [main.money, saved_money])
+			chk("Zug wiederhergestellt", main.train.consist == saved_consist and main.train.loco_id == "express",
+				"%s %s" % [main.train.loco_id, main.train.consist])
+			chk("Position wiederhergestellt", main.train.seg == saved_seg and absf(main.train.progress - saved_prog) < 0.5)
+			# Ziele
+			main.tickets_checked = 10
+			var m_goal = main.money
+			main._check_goals()
+			chk("Ziel erreicht", main.goals_done.has("tickets10"))
+			chk("Belohnung gezahlt", main.money - m_goal == 250, "+%d €" % (main.money - m_goal))
+			chk("Ziele der Reihe nach", not main.goals_done.has("cargo30") and not main.won)
+			var g = main.current_goal()
+			chk("Nächstes Ziel im HUD", String(g.get("text", "")).begins_with("30 Einheiten"), "%s" % g)
 			wait = 0.3
 		7:
 			chk("Spieler im Zug", main.train.locate(main.player.s)["index"] == 0)
@@ -121,6 +151,9 @@ func _process(d):
 			wait = 3.0
 		8:
 			chk("Zug fährt", main.train.speed > 3.0, "v=%.1f m/s" % main.train.speed)
+			var e: Vector3 = main.train.cars[0].global_transform.basis.get_euler()
+			chk("Wagen wackelt bei Fahrt", absf(e.z) > 0.0005 or absf(e.x) > 0.0005,
+				"roll=%.4f pitch=%.4f" % [e.z, e.x])
 			_key(KEY_W, false)
 			_key(KEY_S, true)
 			wait = 4.0

tests/switch_test.gd

@@ -0,0 +1,175 @@
+extends Node
+## Weichen: Route wählen, Übergang ohne Sprung, Bergstrecke erreichbar.
+var main
+var step := 0
+var wait := 0.0
+var ok := 0
+var fail := 0
+var last_pos := Vector3.ZERO
+var worst_jump := 0.0
+var jump_frames := 0
+var _dbg := 0.0
+var _cam_hits := 0
+var _cam_pulled := 0
+var _cam_yaw := 0
+
+func chk(n: String, c: bool, i := "") -> void:
+	if c: ok += 1; print("  OK   %s %s" % [n, i])
+	else: fail += 1; print("  FAIL %s %s" % [n, i])
+
+func _key(c: int, d: bool) -> void:
+	var e := InputEventKey.new(); e.physical_keycode = c; e.keycode = c; e.pressed = d
+	Input.parse_input_event(e)
+
+func _watch(d: float) -> void:
+	var t = main.train
+	var p: Vector3 = t.cars[t.cars.size() - 1].global_position
+	if last_pos != Vector3.ZERO and d > 0.0:
+		var jump := p.distance_to(last_pos)
+		var allowed: float = t.speed * d * 1.5 + 0.05
+		if jump > allowed:
+			jump_frames += 1
+		worst_jump = maxf(worst_jump, jump - t.speed * d)
+	last_pos = p
+
+## Im Physik-Takt messen: dort bewegt sich der Zug genau einmal pro Aufruf.
+func _physics_process(d: float) -> void:
+	if main != null and main.started and step >= 1 and step <= 8:
+		_watch(d)
+
+func _process(d):
+	if main == null:
+		main = get_tree().current_scene
+		return
+	if not main.started:
+		main._start_solo()
+		return
+	var t = main.train
+	if wait > 0.0:
+		wait -= d
+		return
+	match step:
+		0:
+			chk("Drei Abschnitte", main.track.segments.size() == 3)
+			chk("Heimstrecke hat Weiche", main.track.is_switch(2))
+			chk("Sechs Bahnhöfe", main.stations.size() == 6)
+			main._park_at(main.stations[4])   # Ahornstadt, Heimstrecke
+			chk("Start auf Heimstrecke", t.seg == 2, "seg=%d" % t.seg)
+			chk("Weiche voraus erkannt", t.upcoming_switch() == 2)
+			var nxt: Array = t.next_station()
+			chk("Nächster Halt Waldkirch (links)", nxt[0].station_name == "Waldkirch",
+				"%s" % nxt[0].station_name)
+			t.switch_choice = 1
+			var nxt2: Array = t.next_station()
+			chk("Nächster Halt Bergblick (rechts)", nxt2[0].station_name == "Bergblick",
+				"%s" % nxt2[0].station_name)
+			t.switch_choice = 0
+			main.driver_id = 1
+			_key(KEY_W, true)
+			last_pos = Vector3.ZERO
+			wait = 1.0
+		1:
+			wait = 0.5
+		2:
+			if t.seg != 0:
+				step -= 1
+				wait = 0.3
+				_dbg += 0.3
+				if _dbg >= 2.0:
+					_dbg = 0.0
+					print("[dbg] seg=%d prog=%.1f/%.1f v=%.1f thr=%.1f driver=%d mode=%d" % [t.seg, t.progress,
+						main.track.seg_length(t.seg), t.speed, t.throttle, main.driver_id, main.player.mode])
+			else:
+				_key(KEY_W, false)
+				_key(KEY_S, true)
+				chk("Links -> Talstrecke", t.seg == 0, "seg=%d" % t.seg)
+				chk("Historie geführt", t.history.size() > 0 and t.history[t.history.size() - 1] == 2,
+					"%s" % [t.history])
+				chk("Letzter Wagen ohne Sprung", jump_frames == 0,
+					"Sprungframes=%d, größter Sprung %.2f m" % [jump_frames, worst_jump])
+				wait = 4.0
+		3:
+			_key(KEY_S, false)
+			main._park_at(main.stations[4])
+			t.switch_choice = 1
+			last_pos = Vector3.ZERO
+			jump_frames = 0
+			worst_jump = 0.0
+			_key(KEY_D, true)
+			_key(KEY_W, true)
+			wait = 1.0
+		4:
+			wait = 0.5
+		5:
+			if t.seg != 1:
+				step -= 1
+				wait = 0.3
+			else:
+				chk("Rechts -> Bergstrecke", t.seg == 1, "seg=%d" % t.seg)
+				chk("D hält die Weiche rechts", t.switch_choice == 1)
+				chk("Übergang rechts ohne Sprung", jump_frames == 0,
+					"Sprungframes=%d" % jump_frames)
+				_key(KEY_D, false)
+				wait = 0.5
+		6:
+			var nxt: Array = t.next_station()
+			chk("Bergblick voraus", nxt[0].station_name == "Bergblick", "%s" % nxt[0].station_name)
+			wait = 0.5
+		7:
+			# bis kurz vor Bergblick fahren, dann bremsen
+			var berg = main.stations[5]
+			var ahead: float = t.distance_ahead(berg)
+			if ahead > t.speed * t.speed / 16.0 + 8.0:
+				step -= 1
+				wait = 0.2
+			else:
+				_key(KEY_W, false)
+				_key(KEY_S, true)
+				wait = 6.0
+		8:
+			_key(KEY_S, false)
+			chk("Zug steht", t.speed < 0.05, "v=%.2f" % t.speed)
+			chk("Am Bergblick angekommen", t.docked_at != null and t.docked_at.station_name == "Bergblick",
+				"dock=%s" % ("-" if t.docked_at == null else t.docked_at.station_name))
+			# Sichtkontrolle: Kreuzung von oben
+			main._park_at(main.stations[4])
+			t.place_head(2, main.track.seg_length(2) - 6.0)
+			main._toggle_camera()
+			main.cam_rig.distance = 95.0
+			main.cam_rig.pitch = deg_to_rad(-70.0)
+			main.cam_rig.yaw = 0.4
+			wait = 1.0
+		9:
+			get_viewport().get_texture().get_image().save_png("user://junction.png")
+			t.place_head(0, main.track.seg_length(0) - 20.0)
+			main.cam_rig.snap_to(t.cars[0].global_position)
+			wait = 1.0
+		10:
+			get_viewport().get_texture().get_image().save_png("user://junction2.png")
+			# Kamera-Kollision: Fokus auf den Bahnsteig, rundherum drehen
+			var st = main.stations[0]
+			main.cam_rig.target = null
+			main.cam_rig.snap_to(st.global_position + Vector3(0, 0, 0))
+			main.cam_rig.distance = 30.0
+			main.cam_rig.pitch = deg_to_rad(-10.0)
+			_cam_hits = 0
+			_cam_yaw = 0
+			wait = 0.2
+		11:
+			if _cam_yaw < 12:
+				main.cam_rig.yaw = _cam_yaw * TAU / 12.0
+				_cam_yaw += 1
+				step -= 1
+				wait = 0.15
+				if main.cam_rig.blocked:
+					_cam_hits += 1
+					var dist: float = main.cam_rig._cam.global_position.distance_to(main.cam_rig.global_position)
+					if dist < 29.0:
+						_cam_pulled += 1
+			else:
+				chk("Kamera stößt am Gebäude an", _cam_hits > 0, "%d von 12 Richtungen" % _cam_hits)
+				chk("Kamera rückt davor", _cam_pulled == _cam_hits, "%d/%d" % [_cam_pulled, _cam_hits])
+		12:
+			print("== %d ok, %d fail ==" % [ok, fail])
+			get_tree().quit(1 if fail > 0 else 0)
+	step += 1