WIP checkpoint: Review: Address review feedback: Implement chunk streaming system in GDScript

test_out.txt

@@ -0,0 +1,15 @@
+Godot Engine v4.6.2.stable.official.71f334935 - https://godotengine.org
+
+roundtrip bounds.position = (0.0, 0.0, 0.0)  (expected (0.5, 1.5, 2.5))
+roundtrip coord = (0, 0, 0)  (expected (1, 2, 3))
+format_version present? -> <null>
+version field -> 1
+SCRIPT ERROR: Invalid assignment of property or key 'properties' with value of type 'bool' on a base object of type 'RefCounted (WorldObjectData)'.
+          at: _parse_object_section (res://scripts/chunk_data_decoder.gd:407)
+          GDScript backtrace (most recent call first):
+              [0] _parse_object_section (res://scripts/chunk_data_decoder.gd:407)
+              [1] _init (res://test_review.gd:25)
+SCRIPT ERROR: Out of bounds get index '0' (on base: 'Array[WorldObjectData]')
+          at: _init (res://test_review.gd:26)
+          GDScript backtrace (most recent call first):
+              [0] _init (res://test_review.gd:26)

test_review.gd

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+extends SceneTree
+
+func _init() -> void:
+	var payload: ChunkDataDecoder.ChunkPayload = ChunkDataDecoder.ChunkPayload.new()
+	payload.world_id = "w"
+	payload.room_id = "r"
+	payload.coord = Vector3i(1, 2, 3)
+	payload.bounds = AABB(Vector3(0.5, 1.5, 2.5), Vector3(32, 32, 1))
+
+	var bytes: PackedByteArray = ChunkDataDecoder.encode_binary(payload)
+	var decoded: ChunkDataDecoder.ChunkPayload = ChunkDataDecoder.decode_binary(bytes)
+
+	print("roundtrip bounds.position = ", decoded.bounds.position, "  (expected (0.5, 1.5, 2.5))")
+	print("roundtrip coord = ", decoded.coord, "  (expected (1, 2, 3))")
+	print("format_version present? -> ", decoded.get("format_version"))
+	print("version field -> ", decoded.version)
+
+	# Test an object with a fractional rotation quaternion component.
+	var obj: ChunkDataDecoder.WorldObjectData = ChunkDataDecoder.WorldObjectData.new()
+	obj.position = Vector3(10.5, -3.25, 0.0)
+	obj.rotation = Vector4(0.707, 0.0, 0.0, 0.707)
+	var obj_bytes: PackedByteArray = ChunkDataDecoder._build_object_section(obj)
+	# build_object_section wraps in a section header; parse it back
+	var p2: ChunkDataDecoder.ChunkPayload = ChunkDataDecoder.ChunkPayload.new()
+	ChunkDataDecoder._parse_object_section(obj_bytes.slice(5), p2)
+	var parsed: ChunkDataDecoder.WorldObjectData = p2.objects[0]
+	print("object position roundtrip = ", parsed.position, "  (expected (10.5, -3.25, 0))")
+	print("object rotation roundtrip = ", parsed.rotation, "  (expected (0.707, 0, 0, 0.707))")
+
+	quit()