feat(studio,stacking,animations,collections): M16 ModBison Studio, object stacking, model animations, and poly collections for MVP 2

scripts/smoke_test_poly_collections_dock.gd

@@ -0,0 +1,137 @@
+extends SceneTree
+## Smoke test verifying Poly Model Collections dock, drag-and-drop placement, and client asset cache.
+
+var _failures: int = 0
+var _checks: int = 0
+
+const AssetCacheManagerClass = preload("res://scripts/studio/asset_cache_manager.gd")
+const StudioCollectionsDockClass = preload("res://scripts/studio/studio_collections_dock.gd")
+
+func _init() -> void:
+	print("--- Running Smoke Test: Poly Collections Dock & Asset Cache ---")
+	test_asset_cache_manager()
+	test_collections_dock_ui_and_filtering()
+	test_drag_and_drop_placement()
+
+	if _failures == 0:
+		print("--- PASS: All %d poly collections checks passed! ---" % _checks)
+		quit(0)
+	else:
+		printerr("--- FAIL: %d failures out of %d checks ---" % [_failures, _checks])
+		quit(1)
+
+
+func _check(desc: String, cond: bool) -> void:
+	_checks += 1
+	if cond:
+		print("  ✓ %s" % desc)
+	else:
+		_failures += 1
+		printerr("  ✗ FAIL: %s" % desc)
+
+
+func test_asset_cache_manager() -> void:
+	print("Testing AssetCacheManager disk cache...")
+	var cache := AssetCacheManagerClass.new()
+	var test_key := "test_prop_chest_01"
+	var mock_bytes := "glTFmockbinarydata".to_utf8_buffer()
+
+	# Store
+	var path := cache.store_asset(test_key, mock_bytes)
+	_check("Stored asset to disk", path != "" and FileAccess.file_exists(path))
+	_check("Cache reports has_cached == true", cache.has_cached(test_key))
+
+	# Read
+	var read_back := cache.read_asset(test_key)
+	_check("Read back identical byte length", read_back.size() == mock_bytes.size())
+	_check("Read back identical content", read_back.get_string_from_utf8() == "glTFmockbinarydata")
+
+	# List cached items
+	var items := cache.get_cached_items()
+	_check("Cache item list contains stored file", items.size() > 0)
+
+	# Clean up
+	var cleared := cache.clear_cache()
+	_check("Cleared cache files", cleared > 0)
+	_check("Cache reports has_cached == false after clear", not cache.has_cached(test_key))
+
+
+func test_collections_dock_ui_and_filtering() -> void:
+	print("Testing StudioCollectionsDock filtering and model selection...")
+	var dock = StudioCollectionsDockClass.new()
+	root.add_child(dock)
+
+	_check("Dock instantiated with UI", dock != null)
+
+	# Test theme filtering
+	dock._theme_option.selected = 1 # "fantasy"
+	dock._on_theme_selected(1)
+	_check("Filtered to fantasy theme displays cards", dock._collections_vbox.get_child_count() > 0)
+
+	# Test text search
+	dock._search_edit.text = "chest"
+	dock._on_search_changed("chest")
+	_check("Search for 'chest' keeps matching collection visible", dock._collections_vbox.get_child_count() > 0)
+
+	# Test non-matching search
+	dock._search_edit.text = "nonexistent_unicorn_blaster"
+	dock._on_search_changed("nonexistent_unicorn_blaster")
+	var status_text = dock._status_label.text
+	_check("Non-matching search shows 0 collections", status_text.contains("0 collections"))
+
+	# Reset filters
+	dock._search_edit.text = ""
+	dock._theme_option.selected = 0
+	dock._on_theme_selected(0)
+	_check("Reset filter restores all collections", dock._collections_vbox.get_child_count() >= 3)
+
+	dock.queue_free()
+
+
+func test_drag_and_drop_placement() -> void:
+	print("Testing Drag and Drop model placement into EditorViewport...")
+	# Setup test core and viewport
+	var payload := ChunkDataDecoder.ChunkPayload.new()
+	var layer := ChunkDataDecoder.TileLayerData.new()
+	layer.name = "ground"
+	layer.layer_id = 0
+	layer.width = 16
+	layer.height = 16
+	layer.depth = 1
+	layer.tiles = PackedInt32Array()
+	layer.tiles.resize(16 * 16)
+	payload.tile_layers.append(layer)
+
+	var model := ChunkEditorModel.new(payload)
+	var catalog := EditorObjectCatalog.new()
+	catalog.load_catalog()
+	var core := EditorCore.new(model, catalog)
+
+	var vp := EditorViewport.new()
+	vp.setup(core, 0)
+	root.add_child(vp)
+
+	var drag_payload := {
+		"type": "model_placement",
+		"catalog_id": "crate_small",
+		"asset_id": "props/crate_small.glb",
+		"model_name": "Wooden Crate"
+	}
+
+	# Check acceptance of drag data
+	var can_drop: bool = vp._can_drop_data(Vector2(48, 48), drag_payload)
+	_check("Viewport accepts model_placement drag data", can_drop)
+
+	var invalid_drop: bool = vp._can_drop_data(Vector2(48, 48), {"type": "unknown_data"})
+	_check("Viewport rejects unknown drag data", not invalid_drop)
+
+	# Perform drop onto tile (2, 2) -> pixel (48, 48) with cell_size=24
+	vp._drop_data(Vector2(48, 48), drag_payload)
+	_check("Model placed into model after drop", core.model.payload.objects.size() == 1)
+
+	var placed_obj = core.model.payload.objects[0]
+	_check("Placed model has catalog_id crate_small", placed_obj.asset_id == "props/crate_small.glb" or placed_obj.properties.get("catalog_id") == "crate_small")
+	_check("Placed model X position is ~2.5", is_equal_approx(placed_obj.position.x, 2.5))
+	_check("Placed model Y position is ~2.5", is_equal_approx(placed_obj.position.y, 2.5))
+
+	vp.queue_free()