SmartPrefabSwap

🛠️ Tool Name: Smart Prefab Swap

📦 Description 

Smart Prefab Swap is a powerful, no-nonsense editor tool that lets you quickly replace objects in your Unity scene with another prefab — while keeping critical properties like position, parent, name, and even materials.
Whether you're cleaning up prototype scenes or batch-replacing placeholder assets, this tool saves you time and ensures accuracy.
🎯 Features

• Replace selected objects or all instances of a prefab in the scene.
• Keep original parent, name, transform, and materials (optional toggles).
• Preserve hierarchy layout.
• Handles both MeshRenderers and SkinnedMeshRenderers.
• Simple, clean UI under Tools > Smart Prefab Swap.

📘 Instructions

1. Open the tool
   In Unity, go to Tools > Smart Prefab Swap.

2. Assign the replacement prefab
   In the window, drag in the prefab you want to replace objects with.

3. Choose what to replace:

   • Option 1: Assign the "Target Prefab to Replace" — this searches the scene and replaces all instances of that prefab.

   • Option 2: Leave the "Target Prefab to Replace" empty and just select objects manually in the hierarchy.

4. Set your options:

   • ✅ Keep Parent – maintains the original object's parent in the hierarchy.

   • ✅ Keep Name – assigns the old object's name to the new one.

   • ✅ Match Materials – copies over shared materials if renderer names match.

5. Click "Replace Objects"
   Confirm the replacement in the popup dialog.

📎 Notes

• Only works in scenes (not prefab assets in Project view).

• Prefab matching uses original source prefab, not just name.

• Matching materials requires renderers to have the same names under each prefab (e.g., "MeshRenderer", "Body", etc.).

💡 Use Cases

• Replacing greybox blocks with final assets.

• Converting placeholder characters to animated prefabs.

• Keeping layout and logic intact during art passes.

• Quickly updating scene-wide props like lights, doors, or effects