Preserve approved pixel tower prototype as development baseline
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Codex
@@ -0,0 +1,182 @@
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extends SceneTree
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const PathServiceScript = preload("res://scripts/world/path_service.gd")
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var _checks := 0
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var _failures := 0
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func _initialize() -> void:
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call_deferred("_run")
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func _run() -> void:
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print("S1: deterministic PathService")
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_test_deterministic_tie_break()
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_test_layer_separation_and_connector()
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_test_connector_access_and_direction()
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_test_cache_invalidation_and_revision()
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_test_connector_only_snapshot()
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if _failures == 0:
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print("PASS: %d checks" % _checks)
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else:
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push_error("FAIL: %d of %d checks failed" % [_failures, _checks])
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quit(_failures)
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func _test_deterministic_tie_break() -> void:
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var service = PathServiceScript.new()
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var passable := [
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Vector3i(0, 0, 0), Vector3i(1, 0, 0), Vector3i(2, 0, 0),
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Vector3i(0, 1, 0), Vector3i(2, 1, 0),
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Vector3i(0, 2, 0), Vector3i(1, 2, 0), Vector3i(2, 2, 0),
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]
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_expect(service.rebuild_graph(passable), "array of Vector3i cells rebuilds the path graph")
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var expected: Array[Vector3i] = [
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Vector3i(0, 1, 0),
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Vector3i(0, 0, 0),
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Vector3i(1, 0, 0),
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Vector3i(2, 0, 0),
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Vector3i(2, 1, 0),
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]
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var first: Array[Vector3i] = service.find_path(Vector3i(0, 1, 0), Vector3i(2, 1, 0), service.FRONT)
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var second: Array[Vector3i] = service.find_path(Vector3i(0, 1, 0), Vector3i(2, 1, 0), service.FRONT)
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_expect(first == expected, "equal-cost routes use coordinate dictionary order as the tie break")
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_expect(second == first, "the cached route exactly reproduces the calculated route")
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_expect(service.cache_hits == 1 and service.cache_misses == 1, "path cache records one miss followed by one hit")
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func _test_layer_separation_and_connector() -> void:
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var service = PathServiceScript.new()
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var passable_set := {}
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for layer in [service.FRONT, service.BACK]:
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for x in range(3):
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passable_set[Vector3i(x, 0, layer)] = true
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_expect(service.rebuild_graph(passable_set), "Dictionary set can supply passable cells without a WorldService dependency")
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_expect(
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service.find_path(Vector3i(0, 0, 0), Vector3i(2, 0, 1)).is_empty(),
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"FRONT and BACK never connect through ordinary cardinal edges"
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)
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_expect(
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service.configure_connector(
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&"service_door",
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Vector3i(2, 0, 0),
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Vector3i(0, 0, 1),
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120,
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true
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),
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"an explicit layer connector is accepted"
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)
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var connected_path: Array[Vector3i] = service.find_path(Vector3i(0, 0, 0), Vector3i(2, 0, 1))
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_expect(
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connected_path.has(Vector3i(2, 0, 0)) and connected_path.has(Vector3i(0, 0, 1)),
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"an explicit connector joins the two isolated layers"
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)
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_expect(
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service.find_path(Vector3i(0, 0, 0), Vector3i(2, 0, 1), service.FRONT).is_empty(),
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"an access-layer restriction rejects a route that enters BACK"
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)
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func _test_connector_access_and_direction() -> void:
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var service = PathServiceScript.new()
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var cells := [Vector3i(0, 0, 0), Vector3i(0, 2, 0)]
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service.rebuild_graph(cells)
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service.configure_connector(
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&"staff_stairs",
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Vector3i(0, 0, 0),
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Vector3i(0, 2, 0),
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150,
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false,
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&"staff"
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)
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_expect(
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service.find_path(Vector3i(0, 0, 0), Vector3i(0, 2, 0)).is_empty(),
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"a restricted connector requires its access id"
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)
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var staff_profile := {
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&"allowed_layers": [service.FRONT],
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&"connector_access_ids": [&"staff"],
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}
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_expect(
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service.find_path(Vector3i(0, 0, 0), Vector3i(0, 2, 0), staff_profile).size() == 2,
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"an access profile enables its matching connector"
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)
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_expect(
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service.find_path(Vector3i(0, 2, 0), Vector3i(0, 0, 0), staff_profile).is_empty(),
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"a one-way connector cannot be traversed in reverse"
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)
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func _test_cache_invalidation_and_revision() -> void:
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var service = PathServiceScript.new()
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var passable := [
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Vector3i(0, 0, 0), Vector3i(1, 0, 0), Vector3i(2, 0, 0),
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Vector3i(0, 1, 0), Vector3i(2, 1, 0),
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Vector3i(0, 2, 0), Vector3i(1, 2, 0), Vector3i(2, 2, 0),
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]
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service.rebuild_graph(passable)
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var initial_revision: int = service.graph_revision
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service.find_path(Vector3i(0, 1, 0), Vector3i(2, 1, 0))
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_expect(service.cached_path_count() == 1, "a calculated path is cached")
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_expect(
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service.invalidate_cache_for_cells([Vector3i(1, 0, 0)]) == 1,
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"local invalidation removes a cached path that crosses an affected cell"
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)
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_expect(service.cached_path_count() == 0, "local invalidation leaves no matching stale cache entry")
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service.find_path(Vector3i(0, 1, 0), Vector3i(2, 1, 0))
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_expect(service.invalidate_all_cache() == 1, "full invalidation reports and removes every cache entry")
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passable.erase(Vector3i(1, 0, 0))
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service.rebuild_graph(passable)
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_expect(service.graph_revision == initial_revision + 1, "a changed topology advances graph_revision exactly once")
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var rebuilt_path: Array[Vector3i] = service.find_path(Vector3i(0, 1, 0), Vector3i(2, 1, 0))
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_expect(rebuilt_path.has(Vector3i(1, 2, 0)), "rebuild discards the old route and uses the remaining corridor")
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func _test_connector_only_snapshot() -> void:
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var cells := [Vector3i(0, 0, 0), Vector3i(0, 0, 1)]
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var original = PathServiceScript.new()
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original.rebuild_graph(cells)
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original.configure_connector(
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&"lift_a",
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Vector3i(0, 0, 0),
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Vector3i(0, 0, 1),
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250,
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true,
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&"lift_pass"
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)
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original.find_path(
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Vector3i(0, 0, 0),
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Vector3i(0, 0, 1),
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null,
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[&"lift_pass"]
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)
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var snapshot: Dictionary = original.create_snapshot()
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_expect(
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snapshot.has(&"connectors") and not snapshot.has(&"graph") and not snapshot.has(&"cache") and not snapshot.has(&"passable_cells"),
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"snapshot persists connector configuration but no derived graph or cache"
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)
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var restored = PathServiceScript.new()
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_expect(restored.restore_snapshot(snapshot), "connector configuration restores independently of world cells")
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_expect(restored.rebuild_graph(cells), "restored service rebuilds its graph from authoritative passable cells")
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_expect(
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restored.find_path(
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Vector3i(0, 0, 0),
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Vector3i(0, 0, 1),
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null,
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[&"lift_pass"]
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).size() == 2,
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"restored connector produces the same cross-layer route after rebuild"
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)
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func _expect(condition: bool, label: String) -> void:
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_checks += 1
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if condition:
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print(" ✓ %s" % label)
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return
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_failures += 1
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push_error(" ✗ %s" % label)
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