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unsafe drag drop test

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- unsafe because of entity reference
- unsafe because of unsafe code lol
- fixes in parent/child system
This commit is contained in:
max 2024-10-15 22:29:19 +02:00
parent 5cc876fce9
commit ba88432e77
6 changed files with 79 additions and 14 deletions
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2
Nerfed.Editor/Components/SelectedInHierachy.cs → Nerfed.Editor/Components/HierachyComponents.cs
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@ -1,4 +1,4 @@
namespace Nerfed.Editor.Components;
public readonly record struct SelectedInHierachy;
public readonly record struct ClickedInHierarchy;
public readonly record struct ClickedInHierachy;

1
Nerfed.Editor/Nerfed.Editor.csproj
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@ -9,6 +9,7 @@
<IsPackable>false</IsPackable>
<Configurations>Debug;Test;Release</Configurations>
<Platforms>x64</Platforms>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x64' ">

1
Nerfed.Editor/Program.cs
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@ -31,6 +31,7 @@ private static void HandleOnInitialize()
editorSystems.Add(new EditorHierarchyWindow(world));
Entity ent1 = world.CreateEntity("parent");
world.Set(ent1, new Root());
world.Set(ent1, new LocalTransform(new Vector3(1, 0, 0), Quaternion.Identity, Vector3.One));
Entity ent2 = world.CreateEntity("child");

78
Nerfed.Editor/Systems/EditorHierarchyWindow.cs
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@ -1,7 +1,9 @@
using ImGuiNET;
using MoonTools.ECS;
using Nerfed.Editor.Components;
using Nerfed.Runtime;
using Nerfed.Runtime.Components;
using Nerfed.Runtime.Util;
namespace Nerfed.Editor.Systems
{
@ -10,7 +12,7 @@ internal class EditorHierarchyWindow : MoonTools.ECS.DebugSystem
{
private const ImGuiTreeNodeFlags baseFlags = ImGuiTreeNodeFlags.OpenOnArrow | ImGuiTreeNodeFlags.OpenOnDoubleClick | ImGuiTreeNodeFlags.SpanAvailWidth;
private readonly Filter rootEntitiesWithTransformFilter;
//private readonly Filter rootEntitiesWithTransformFilter;
//private readonly Filter rootEntitiesFilterBroken;
private readonly Filter rootEntitiesFilter;
@ -18,7 +20,7 @@ internal class EditorHierarchyWindow : MoonTools.ECS.DebugSystem
public EditorHierarchyWindow(World world) : base(world)
{
rootEntitiesWithTransformFilter = FilterBuilder.Include<LocalTransform>().Exclude<Child>().Build();
//rootEntitiesWithTransformFilter = FilterBuilder.Include<LocalTransform>().Exclude<Child>().Build();
// TODO: this doesn't work.
//rootEntitiesFilterBroken = FilterBuilder.Exclude<Child>().Build();
@ -42,10 +44,28 @@ public override void Update(TimeSpan delta)
if (ImGui.TreeNodeEx("World", flags))
{
foreach (Entity entity in rootEntitiesWithTransformFilter.Entities)
if (ImGui.BeginDragDropTarget())
{
DrawEntityAndChildren(entity);
unsafe
{
ImGuiPayloadPtr payload = ImGui.AcceptDragDropPayload($"{nameof(EditorHierarchyWindow)}");
if (payload.NativePtr != null)
{
Entity* data = (Entity*)payload.Data;
Entity child = data[0];
Log.Info($"Dropped {child.ID}");
Transform.RemoveParent(World, child);
}
}
ImGui.EndDragDropTarget();
}
//foreach (Entity entity in rootEntitiesWithTransformFilter.Entities)
//{
// DrawEntityAndChildren(entity);
//}
foreach (Entity entity in rootEntitiesFilter.Entities)
{
@ -76,9 +96,41 @@ private void DrawEntityAndChildren(in Entity entity)
if (ImGui.TreeNodeEx($"{entity.ID} | {GetTag(entity)}", flags))
{
// Selection.
if (ImGui.IsItemClicked() && !ImGui.IsItemToggledOpen())
{
World.Set(entity, new ClickedInHierarchy());
World.Set(entity, new ClickedInHierachy());
}
// Drag and drop.
if (ImGui.BeginDragDropSource())
{
unsafe
{
fixed (Entity* payload = &entity)
{
ImGui.SetDragDropPayload($"{nameof(EditorHierarchyWindow)}", (IntPtr)payload, (uint)sizeof(Entity));
}
}
ImGui.EndDragDropSource();
}
if (ImGui.BeginDragDropTarget())
{
unsafe
{
ImGuiPayloadPtr payload = ImGui.AcceptDragDropPayload($"{nameof(EditorHierarchyWindow)}");
if (payload.NativePtr != null)
{
Entity* data = (Entity*)payload.Data;
Entity ent = data[0];
Log.Info($"Dropped {ent.ID}");
Transform.SetParent(World, ent, entity);
}
}
ImGui.EndDragDropTarget();
}
ReverseSpanEnumerator<Entity> childEntities = World.InRelations<ChildParentRelation>(entity);
@ -100,7 +152,7 @@ private class EditorHierachySelectionSystem : MoonTools.ECS.System
public EditorHierachySelectionSystem(World world) : base(world)
{
selectedEntities = FilterBuilder.Include<SelectedInHierachy>().Build();
clickedEntities = FilterBuilder.Include<ClickedInHierarchy>().Build();
clickedEntities = FilterBuilder.Include<ClickedInHierachy>().Build();
}
public override void Update(TimeSpan delta)
@ -128,9 +180,21 @@ public override void Update(TimeSpan delta)
Set(entity, new SelectedInHierachy());
}
Remove<ClickedInHierarchy>(entity);
Remove<ClickedInHierachy>(entity);
}
}
}
private class EditorHierachyDragAndDropSystem : MoonTools.ECS.System
{
public EditorHierachyDragAndDropSystem(World world) : base(world)
{
}
public override void Update(TimeSpan delta)
{
}
}
}
}

2
Nerfed.Runtime/Systems/LocalToWorldSystem.cs
View File

@ -45,7 +45,7 @@ private void UpdateWorldTransform(in Entity entity, Matrix4x4 localToWorldMatrix
LocalToWorld localToWorld = new(localToWorldMatrix);
Set(entity, localToWorld);
Log.Info($"Entity {entity} | local position {localTransform.position} | world position {localToWorldMatrix.Translation}");
//Log.Info($"Entity {entity} | local position {localTransform.position} | world position {localToWorldMatrix.Translation}");
}
ReverseSpanEnumerator<Entity> childEntities = World.OutRelations<ChildParentRelation>(entity);

9
Nerfed.Runtime/Util/Transform.cs
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@ -28,10 +28,7 @@ public static Matrix4x4 TRS(in this LocalTransform localTransform)
// Relation goes from child to parent.
public static void SetParent(in World world, in Entity child, in Entity parent)
{
if (world.Related<ChildParentRelation>(parent, child))
{
RemoveParent(world, parent);
}
RemoveParent(world, child);
world.Relate(child, parent, new ChildParentRelation());
world.Set(child, new Child());
@ -47,8 +44,10 @@ public static void RemoveParent(in World world, in Entity child)
return;
}
Entity parent = world.OutRelationSingleton<ChildParentRelation>(child);
// TODO: Check if Unrelate all also unrelates incomming relations..?
world.UnrelateAll<ChildParentRelation>(child);
world.Unrelate<ChildParentRelation>(child, parent);
world.Remove<Child>(child);
world.Set(child, new Root());
}