> For the complete documentation index, see [llms.txt](https://megacrush.gitbook.io/megacrush-unity-assets/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://megacrush.gitbook.io/megacrush-unity-assets/runtime-spawner/runtime-spawner-user-manual/technical-details.md).

# Technical Details

### Technical Details

Runtime Spawner 2.0 is built as a **modular, package-based system** using Unity’s Package Manager (UPM).

***

### Unity Version

Runtime Spawner 2.0 is built and tested with:

* **Unity 2022.3 LTS and newer**

It may work on earlier versions, but compatibility is not guaranteed - particularly for:

* AI Navigation (Nav Mesh)
* Editor tooling and UI

If you are targeting an older Unity version, please contact support.

***

### Package Structure

Runtime Spawner 2.0 is no longer a single package.

It is split into multiple **independent UPM packages**, allowing you to include only what your project needs.

#### Core Packages

* `com.megacrush.runtimespawner.core`\
  Core spawning systems and execution pipeline
* `com.megacrush.runtimespawner.shared`\
  Shared utilities and editor tooling

***

#### Addon Packages

* `com.megacrush.spawner.global`
* `com.megacrush.spawner.localarea`
* `com.megacrush.spawner.waves`
* `com.megacrush.spawner.spawnpoints`
* `com.megacrush.spawner.specialencounters`

Each addon provides a specific spawning behavior and depends on the Core package.

***

#### Networking Packages

* `com.megacrush.runtimespawner.networking` (shared abstractions)
* `com.megacrush.spawner.networking.pun`
* `com.megacrush.spawner.networking.fusion`

Addon-specific networking bridges are also provided (e.g. Waves, Local Area).

***

#### Object Pooling

Runtime Spawner uses a separate package for pooling:

* `com.megacrush.objectpool`

This is used by default factories and can be replaced if needed.

***

### Dependencies

#### Core Runtime

The Core package has **no required external dependencies** beyond Unity itself.

***

#### Sample Content

Sample scenes may depend on Unity packages such as:

* AI Navigation
* TextMeshPro

These are installed automatically when importing samples.

If you remove the samples, these dependencies can also be removed.

***

#### Networking (Optional)

Networking support requires installing the corresponding third-party SDK:

* Photon PUN 2+
* Photon Fusion 2.x

These are **not included** with Runtime Spawner and must be installed separately.

***

### Scripting Defines

Runtime Spawner uses compile-time defines to enable integrations:

* `PUN_2_OR_NEWER` → enables PUN integration
* `FUSION_WEAVER` → enables Fusion integration

These are typically set automatically when the corresponding packages are installed.

***

### Profiling

To enable profiling markers:

* Add the following scripting define:

```
ENABLE_PROFILER
```

Location:

* **Edit → Project Settings → Player → Scripting Define Symbols**

This enables additional runtime profiling hooks for debugging and performance analysis.

***

### Extensibility

Runtime Spawner is designed to be extended:

* Custom object factories (replace pooling or networking)
* Custom addons (define new spawning behavior)
* Custom prefab sources
* Alternative navigation or placement systems

The system does not require Nav Mesh specifically and can be adapted to other solutions.

***

### Notes

* Core functionality does not depend on networking or addons
* Addons can be used independently or combined
* Networking is fully optional and layered on top of Core