Add native room locks, jump stars and refined drones

tools/test_environment.gd

@@ -30,6 +30,13 @@ func _run() -> void:
 		if child is MultiMeshInstance3D:
 			meshes += 1
 	_check(meshes == 3, "Starfield must batch its geometry into three draw calls")
+	var star_nodes: Array[MultiMeshInstance3D] = []
+	var star_meshes: Array[MultiMesh] = []
+	for child in space.get_children():
+		if child is MultiMeshInstance3D:
+			star_nodes.append(child)
+			star_meshes.append(child.multimesh)
+			_check(child.material_override == space.star_material, "Star shells must share one persistent stretch material")
 	for kind in ["asteroid", "sun", "storm", "nebula", "pulsar", "clear"]:
 		space.apply_state({"hazard": kind, "paused": false})
 		_check(space.hazard == kind, "Environment must follow the native hazard")
@@ -46,6 +53,48 @@ func _run() -> void:
 	space.apply_state({"hazard": "asteroid", "paused": false})
 	space._process(0.5)
 	_check(rock.position != location, "Unpaused asteroid field must have parallax motion")
+	# A charged drive, the map, and pending startup events are not departures.
+	for stationary in [
+		{"hazard": "clear", "navigation": {"jump": true}, "map_open": true},
+		{"hazard": "clear", "transition": true, "event_pending": true, "paused": true},
+		{"hazard": "clear", "event_open": true, "dialog": {"id": "startup"}},
+	]:
+		space.apply_state(stationary)
+		space._process(0.4)
+		_check(not space.jump_active and space.jump_stretch == 0.0, "Stationary native UI must not fake a jump")
+	space.set_travel_direction(Vector3(0.0, 7.0, -3.0))
+	_check(space.travel_direction.is_equal_approx(Vector3.FORWARD), "Travel follows the ship bow projected onto the horizontal plane")
+	space.set_travel_direction(Vector3.UP)
+	_check(space.travel_direction.is_equal_approx(Vector3.FORWARD), "An invalid vertical heading must preserve the last travel direction")
+	space.apply_state({"hazard": "asteroid", "jumping": true, "paused": true, "frozen": true})
+	var departure_rock: Node3D = space.rocks[0]["node"]
+	var departure_location := departure_rock.position
+	space._process(0.1)
+	_check(space.jump_active and space.jump_stretch > 0.0, "Native travel must stretch stars even while simulation is paused")
+	_check(not space.hazard_root.visible, "Old beacon hazards must be hidden during travel")
+	_check(departure_rock.position == departure_location, "Hidden old beacon hazards must not advance during travel")
+	space._process(0.4)
+	_check(space.jump_stretch == 1.0, "A sustained native jump must reach full star stretch")
+	space.set_travel_direction(Vector3(-4.0, 0.0, 0.0))
+	_check(Vector3(space.star_material.get_shader_parameter("travel_direction")).is_equal_approx(Vector3.LEFT), "Streaks must follow the supplied ship heading, including reversed travel")
+	space.apply_state({"hazard": "sun", "jumping": true, "event_open": true, "paused": true})
+	_check(not space.jump_active and space.jump_stretch == 0.0, "Arrival dialog must restore stars immediately")
+	_check(space.hazard_root.visible and space.hazard == "sun", "Arrival must show the new beacon's native hazard")
+	space.apply_state({"hazard": "sun", "jumping": true, "event_open": false})
+	space._process(0.3)
+	_check(space.jump_stretch == 0.0, "Closing an arrival dialog must not restart a lingering native jump animation")
+	space.apply_state({"hazard": "clear", "jumping": false})
+	space.apply_state({"hazard": "clear", "jumping": true})
+	space._process(0.4)
+	_check(space.jump_stretch == 1.0, "The next real departure must animate after the previous arrival")
+	space.apply_state({"hazard": "nebula", "jumping": false, "event_open": false})
+	_check(space.jump_stretch == 0.0 and space.hazard_root.visible, "A beacon without an arrival dialog must also end native travel")
+	space.apply_state({"jumping": true, "ready": false, "ui_mode": "menu"})
+	space._process(0.4)
+	_check(space.jump_stretch == 0.0, "A native menu snapshot must not show travel")
+	for i in range(star_nodes.size()):
+		_check(star_nodes[i].multimesh == star_meshes[i], "Jump transitions must preserve the star MultiMesh resources")
+		_check(star_nodes[i].material_override == space.star_material, "Jump transitions must preserve the shared star material")
 	print("ENVIRONMENT_TESTS ", "PASS" if failures == 0 else "FAIL: %d" % failures)
 	space.queue_free()
 	await process_frame