hytopia/docs/server.simulationeventpayloads.md

The HYTOPIA SDK makes it easy for developers to create massively multiplayer games using JavaScript or TypeScript.

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[Home](./index.md) &gt; [server](./server.md) &gt; [SimulationEventPayloads](./server.simulationeventpayloads.md)

## SimulationEventPayloads interface

Event payloads for Simulation emitted events.

**Signature:**

```typescript
export interface SimulationEventPayloads 
```

## Properties

<table><thead><tr><th>

Property


</th><th>

Modifiers


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

["SIMULATION.DEBUG\_RAYCAST"](./server.simulationeventpayloads._simulation.debug_raycast_.md)


</td><td>


</td><td>

{ simulation: [Simulation](./server.simulation.md)<!-- -->; origin: [Vector3Like](./server.vector3like.md)<!-- -->; direction: [Vector3Like](./server.vector3like.md)<!-- -->; length: number; hit: boolean; }


</td><td>

Emitted when a debug raycast is performed.


</td></tr>
<tr><td>

["SIMULATION.DEBUG\_RENDER"](./server.simulationeventpayloads._simulation.debug_render_.md)


</td><td>


</td><td>

{ simulation: [Simulation](./server.simulation.md)<!-- -->; vertices: Float32Array; colors: Float32Array; }


</td><td>

Emitted when the simulation debug rendering is enabled.


</td></tr>
<tr><td>

["SIMULATION.STEP\_END"](./server.simulationeventpayloads._simulation.step_end_.md)


</td><td>


</td><td>

{ simulation: [Simulation](./server.simulation.md)<!-- -->; stepDurationMs: number; }


</td><td>

Emitted when the simulation step ends.


</td></tr>
<tr><td>

["SIMULATION.STEP\_START"](./server.simulationeventpayloads._simulation.step_start_.md)


</td><td>


</td><td>

{ simulation: [Simulation](./server.simulation.md)<!-- -->; tickDeltaMs: number; }


</td><td>

Emitted when the simulation step starts.


</td></tr>
</tbody></table>