Initial commit

Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/GhostMovementContext.cs

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+using UnityEngine;
+
+public struct GhostMovementContext
+{
+    // Ghost
+    public readonly Transform GhostTransform;
+
+    // surface
+    public readonly Vector3 SurfacePoint;
+    public readonly Vector3 SurfaceNormal;
+
+    // Socket snap
+    public readonly SocketPoint MySocket;
+    public readonly SocketPoint TargetSocket;
+
+    // Per-prefab config
+    public readonly Transform AttachPoint;
+    public readonly float FollowSpeed;
+    public readonly float HeightOffset;
+    public readonly bool AlignToSurfaceNormal;
+    public readonly bool SnapRotation;
+
+    // Output, GhostManager reads it after the call
+    public Vector3 RotationAxis;
+
+    public GhostMovementContext(
+        Transform ghostTransform,
+        Vector3 surfacePoint,
+        Vector3 surfaceNormal,
+        SocketPoint mySocket,
+        SocketPoint targetSocket,
+        Transform attachPoint,
+        float followSpeed,
+        float heightOffset,
+        bool alignToSurfaceNormal,
+        bool snapRotation)
+    {
+        GhostTransform = ghostTransform;
+        SurfacePoint = surfacePoint;
+        SurfaceNormal = surfaceNormal;
+        MySocket = mySocket;
+        TargetSocket = targetSocket;
+        AttachPoint = attachPoint;
+        FollowSpeed = followSpeed;
+        HeightOffset = heightOffset;
+        AlignToSurfaceNormal = alignToSurfaceNormal;
+        SnapRotation = snapRotation;
+        RotationAxis = Vector3.up;
+    }
+}

Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/GhostMovementContext.cs.meta

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Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/IBlockValidator.cs

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+public interface IBlockValidator
+{
+    bool IsValid(BlockEditContext ctx);
+}

Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/IBlockValidator.cs.meta

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Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/IGhostMovementStrategy.cs

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+/// <summary>
+/// Drives how the ghost object moves and orients each frame.
+/// </summary>
+public interface IGhostMovementStrategy
+{
+    /// <summary>
+    /// Called every frame when there is an active ghost.
+    /// Responsible for updating GhostTransform.position and .rotation.
+    /// Must also write ctx.RotationAxis before returning.
+    /// </summary>
+    void UpdateMovement(ref GhostMovementContext ctx);
+}

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Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/IPlacementHandler.cs

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+public interface IPlacementHandler
+{
+    /// <summary>
+    /// Commit the ghost's current transform as the final placed state.
+    /// </summary>
+    void Commit(BlockEditContext ctx);
+
+    /// <summary>
+    /// Cancel the edit and restore any previous state.
+    /// </summary>
+    void Cancel(BlockEditContext ctx);
+
+    void Debugln();
+}

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Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/IRotateHandler.cs

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+public interface IRotateHandler
+{
+    /// <summary>
+    /// handle rotation of Ghost Transfrom
+    /// </summary>
+    void performRotation(BlockEditContext ctx);
+
+    /// <summary>
+    /// add an angle to the allowed angles to rotate with
+    /// </summary>
+    void addAngle(float angle);
+
+    /// <summary>
+    /// remove that angle
+    /// </summary>
+    void removeAngle(float angle);
+
+    /// <summary>
+    /// clear all added angles
+    /// </summary>
+    void clearAngles();
+}

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Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/ISnapBehavior.cs

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+public interface ISnapBehavior
+{
+    /// <summary>
+    /// Called every frame after socket scanning.
+    /// Returns true if a snap was applied and false if failed.
+    /// </summary>
+    bool TrySnap(BlockEditContext ctx);
+}

Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/ISnapBehavior.cs.meta

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Assets/_Project/Scripts/Code/BlockExtensions/Abstraction/IVisualFeedback.cs

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+public interface IVisualFeedback
+{
+    void OnValid(BlockEditContext ctx);
+    void OnInvalid(BlockEditContext ctx);
+}

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