Unity Spline Object Placer Editor

Spline Object Placer Editor is a Unity Editor tool that lets you quickly and intuitively place objects along a spline in your scene. Designed for level designers and technical artists, this script streamlines the process of populating paths, roads, fences, or any other spline-based layout with prefabs—saving you time and giving you more creative control.

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✨ Features

• Easy Spline Selection:
  Select any GameObject with a compatible spline component in your scene.

• Prefab Placement:
  Choose a prefab and automatically place instances along the spline at regular intervals.

• Spacing Control:
  Adjust the distance between placed objects to fit your design needs.

• Randomization Options:
  Add random rotation and scale to each placed object for a more natural look.

• Live Preview:
  See a preview of the placement in the editor before committing.

• Batch Placement & Removal:
  Place all objects with one click, and remove them just as easily.

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🛠️ How to Use

1. Add the Script:
   Copy SplineObjectPlacerEditor.cs into your project's Editor folder.

2. Open the Tool:
   In Unity, select Tools > Spline Object Placer from the menu bar.

3. Set Up Your Spline:
   Select a GameObject in your scene that has a spline component (such as a custom spline or Unity's built-in splines).

4. Choose a Prefab:
   Drag a prefab from your project into the "Prefab" field in the tool window.

5. Adjust Settings:
   Set the spacing, randomization options, and any other parameters.

6. Preview & Place:
   Click "Preview" to see how objects will be placed.
   Click "Place Objects" to instantiate them along the spline.

7. Remove Objects:
   Use the "Remove Objects" button to clear all placed instances.

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🎮 Use Cases

• Quickly lay out fences, guardrails, or walls along a path.
• Populate roads or tracks with props, lights, or signs.
• Place trees, rocks, or other environment assets along winding trails.
• Prototype gameplay elements that follow a spline.

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📦 Requirements

• Unity 2021.2 or newer recommended.
• A spline component on your target GameObject (custom or Unity's).

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🚧 Future Plans

• Support for multiple prefabs and weighted random selection.
• Advanced alignment and orientation controls.
• Support for more spline types and third-party spline assets.
• Undo/redo integration for safer editing.

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🤝 Contributing

Found a bug or have a feature request?
Open an issue or submit a pull request on GitHub.

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📄 License

MIT License

Author: Aran Ahmed