s&box

components/player_sfx.cs

Component attached to a player that plays footstep/collision sounds when the player is near the ground while walking or running. It traces a box downward each update, checks surface hit and player movement state, and broadcasts a RPC to play the collision sound with different cooldowns for run vs walk.

Networking

using Sandbox;
using System;

public class Player__SFX : Component {
	[Property] public Player__Controller Player_Controller {get;set;}
	TimeUntil Next;
	
	protected override void OnUpdate() {
		if (IsProxy) return;
		var From = WorldPosition;
		var To = From + new Vector3(0, 0, -64);
		
		SceneTraceResult Box = Scene.Trace
		.Box(BBox.FromPositionAndSize(0, 64), From, To)
		.IgnoreGameObject(GameObject).Run();
		
		if (Box.Hit && (Player_Controller.State == "run" || Player_Controller.State == "walk") && Next) {
			PlayCollisionSound(Box.Surface, WorldPosition, 256f);
			if (Player_Controller.State == "run") {
				Next = .25f;
				return;
			}
			Next = .4f;
		}
	}
	
	[Rpc.Broadcast]
	public void PlayCollisionSound(Surface surface, Vector3 vector3, float Float) {
		surface.PlayCollisionSound(vector3, Float);
	}
}