Hierarchy

Remarks

Four components describe one relationship, and every one of them can be written directly. Nothing stops that, and everything that does it will eventually produce a list that loops back on itself or a depth that disagrees with the parent chain. This is the only supported way to change the shape of a hierarchy, and it is what the tests are written against.

Methods (12)

• public static Entity CreateTransform(World world, LocalTransform local)

  Creates an entity with a transform, ready to be parented and rendered.

• public static Entity ParentOf(World world, Entity entity)

  The entity's parent, or Null if it is a root.

• public static int DepthOf(World world, Entity entity)

  How far the entity is from a root.

• public static Matrix4x4 ResolveWorldMatrix(World world, Entity entity)

  The entity's local-to-world matrix as it stands now, composed by walking the parent chain rather than read from WorldTransform.

• public static Hierarchy.ChildSequence ChildrenOf(World world, Entity entity)

  The entity's children, in no guaranteed order.

• public static bool IsAncestorOf(World world, Entity ancestor, Entity entity)

  Whether one entity is the other's ancestor.

• public static void SetParentKeepingWorldPosition(World world, Entity entity, Entity parent)

  Reparents an entity, keeping its world position where it was.

• public static void SetParent(World world, Entity entity, Entity parent)

  Reparents an entity, keeping its local transform and so moving it in the world.

• public static void SetParentAfter(World world, Entity entity, Entity parent, Entity after)

  Hangs an entity from a parent at a particular place among its children.

• public static Entity PreviousSiblingOf(World world, Entity entity)

  Which child comes before this one, or null if it is the first or has no parent.

• public static void DestroySubtree(World world, Entity root)

  Destroys an entity and everything below it.

• public static void DestroySubtree(World world, CommandBuffer commands, Entity root)

  Records the destruction of an entity and everything below it, for playback later.

Used by (51, showing 40)

• PlayerRigThirdPersonShooter
• ProgramEcsStressTest
• BehaviorTestsVixen.Engine.Tests
• CameraDirectorSystemVixen.Engine
• CameraDirectorTestsVixen.Engine.Tests
• CameraExtractionTestsVixen.Rendering.Tests
• HierarchyTestsVixen.Engine.Tests
• NetworkSpawnTestsVixen.Net.Engine.Tests
• NetworkSpawnerVixen.Net.Engine
• PlayerAllocationTestsVixen.Engine.Tests
• PlayerCamerasVixen.Engine
• PlayerSpawnerTestsVixen.Net.Engine.Tests
• PredictionSmoothingTestsVixen.Net.Engine.Tests
• PrefabVixen.Engine
• RigVixen.Engine.Tests
• RigVixen.Engine.Tests
• RigVixen.Engine.Tests
• RigVixen.Engine.Tests
• SceneAndPrefabTestsVixen.Engine.Tests
• SceneAssetTestsVixen.Engine.Tests
• SceneContentVixen.Engine
• SceneManagerVixen.Engine
• SiblingOrderTestsVixen.Engine.Tests
• TransformVixen.Engine
• TransformSystemVixen.Engine
• TransformSystemTestsVixen.Engine.Tests
• VirtualCameraSystemVixen.Engine
• VirtualCameraTestsVixen.Engine.Tests
• VirtualCamerasVixen.Engine
• WorldSerializerVixen.Engine
• WorldSerializerTestsVixen.Engine.Tests
• DiagnosticsModuleVixen.Editor.Diagnostics
• EditorApplicationVixen.Editor.App
• EntityGizmoTargetVixen.Editor.SceneView
• EntityLifetimeTestsVixen.Editor.SceneView.Tests
• HostedRendererTestsVixen.App.Tests
• OutlinerTestsVixen.Editor.App.Tests
• PrefabInstanceTestsVixen.Editor.AssetEditors.Tests
• ReparentCommandVixen.Editor.SceneView
• ReparentTestsVixen.Editor.SceneView.Tests