public SceneTree()
{
current = this;
root = new SceneNode(this);
root.name = "Root";
}
public static string SaveToJson(SceneTree instance)
{
string rtnData;
using (MemoryStream memoryStream = new MemoryStream())
{
using (Utf8JsonWriter writer = new Utf8JsonWriter(memoryStream))
{
writer.WriteStartObject();
writer.WriteNumber("HighestUuid", instance.uuidManager.GetInternals().highest);
writer.WriteStartArray("FreedUuids");
foreach (ulong freeId in instance.uuidManager.GetInternals().freed)
{
writer.WriteNumberValue(freeId);
}
writer.WriteEndArray();
writer.WriteStartArray("Nodes");
foreach (SceneNode node in instance.allNodes.Values)
{
writer.WriteStartObject();
node.ToJson(writer);
writer.WriteEndObject();
}
writer.WriteEndArray();
writer.WriteEndObject();
writer.Flush();
}
rtnData = System.Text.Encoding.UTF8.GetString(memoryStream.GetBuffer(), 0, (int)memoryStream.Length);
}
return(rtnData);
}
public void SetTree(SceneTree tree)
{
this.tree = tree;
selectedNode = tree.root.uuid;
openNodes = new List <ulong>();
}
internal SceneNode(SceneTree tree, ulong id, bool isComp = false)
{
isComponent = isComp;
uuid = id;
this.tree = tree;
this.tree.allNodes.Add(uuid, this);
}
internal static SceneTree GetCurrent()
{
if (current == null)
{
current = new SceneTree();
}
return(current);
}
internal SceneNode(SceneTree tree = null, bool isComp = false)
{
this.tree = (tree == null ? SceneTree.GetCurrent() : tree);
this.uuid = this.tree.uuidManager.GenerateId();
this.tree.allNodes.Add(uuid, this);
this.isComponent = isComp;
}
protected override void Init()
{
ObjectDatabase.Init();
string jsonData = ResourceManager.Global.GetRef("Scenes/ExampleScene.json").Get <TextResource>().resource;
tree = SceneTree.LoadFromJson(jsonData);
visualizer = new TreeVisualizer(tree);
}
public static SceneTree LoadFromJson(string jsonFile)
{
SceneTree localTree = new SceneTree();
JsonDocument jdoc = JsonDocument.Parse(jsonFile);
JsonElement jdocRoot = jdoc.RootElement;
ulong?highestId = null;
if (jdocRoot.TryGetProperty("HighestUuid", out JsonElement newHighestProperty) &&
newHighestProperty.TryGetUInt64(out ulong newHighestUuid))
{
highestId = newHighestUuid;
}
Queue <ulong> newFreeds = new Queue <ulong>();
if (jdocRoot.TryGetProperty("FreeUuids", out JsonElement newFreedUuidsProperty) &&
newFreedUuidsProperty.GetArrayLength() > 0)
{
foreach (JsonElement freedProp in newFreedUuidsProperty.EnumerateArray())
{
newFreeds.Enqueue(freedProp.GetUInt64());
}
}
localTree.uuidManager = new UuidManager(highestId, newFreeds);
if (jdocRoot.TryGetProperty("Nodes", out JsonElement nodesProperty))
{
foreach (JsonElement element in nodesProperty.EnumerateArray())
{
LoadNodeJson(localTree, element);
}
}
foreach (SceneNode node in localTree.allNodes.Values)
{
if (node == localTree.root)
{
continue;
}
if (!localTree.allNodes.ContainsKey(node.parent))
{
Log.WriteError("Could not parent SceneNode, parent id not found in tree, removing node.");
localTree.FreeNode(node.uuid);
continue;
}
SceneNode parent = localTree.allNodes[node.parent];
parent.children.Add(node.uuid);
}
return(localTree);
}
protected override void Update(DeltaTime delta)
{
if (Input.IsKeyReleased(InputKey.F1))
{
renderVisualizer = !renderVisualizer;
}
if (Input.IsKeyReleased(InputKey.F2))
{
string jsonData = SceneTree.SaveToJson(tree);
File.WriteAllText("_Data/Scenes/SavedDebugScene.json", jsonData);
}
if (renderVisualizer)
{
visualizer.Update(delta);
}
}
private static void LoadNodeJson(SceneTree tree, JsonElement nodeElement)
{
ulong uuid = 0;
bool isComponent = false;
if (nodeElement.TryGetProperty("UUID", out JsonElement idElement) &&
nodeElement.TryGetProperty("IsComponent", out JsonElement isCompElement))
{
uuid = idElement.GetUInt64();
isComponent = isCompElement.GetBoolean();
}
else
{
Log.WriteError("Could not loaded SceneNode, UUID/IsComponent missing. Skipping node (note this may cause further failures in tree).");
return;
}
SceneNode node = new SceneNode(tree, uuid, isComponent);
node.FromJson(nodeElement);
}
public TreeVisualizer(SceneTree tree)
{
bodyFont = ResourceManager.Global.GetRef("Fonts/NotoMono_Regular.ttf");
SetTree(tree);
}