[Home](./index.md) > [server](./server.md) > [SimulationEventPayloads](./server.simulationeventpayloads.md) ## SimulationEventPayloads interface Event payloads for Simulation emitted events. **Signature:** ```typescript export interface SimulationEventPayloads ``` ## Properties

Property	Modifiers	Type	Description
["SIMULATION.DEBUG\_RAYCAST"](./server.simulationeventpayloads._simulation.debug_raycast_.md)		{ simulation: [Simulation](./server.simulation.md); origin: [Vector3Like](./server.vector3like.md); direction: [Vector3Like](./server.vector3like.md); length: number; hit: boolean; }	Emitted when a debug raycast is performed.
["SIMULATION.DEBUG\_RENDER"](./server.simulationeventpayloads._simulation.debug_render_.md)		{ simulation: [Simulation](./server.simulation.md); vertices: Float32Array; colors: Float32Array; }	Emitted when the simulation debug rendering is enabled.
["SIMULATION.STEP\_END"](./server.simulationeventpayloads._simulation.step_end_.md)		{ simulation: [Simulation](./server.simulation.md); stepDurationMs: number; }	Emitted when the simulation step ends.
["SIMULATION.STEP\_START"](./server.simulationeventpayloads._simulation.step_start_.md)		{ simulation: [Simulation](./server.simulation.md); tickDeltaMs: number; }	Emitted when the simulation step starts.