ParticleSystem.ExternalForcesModule.multiplier

Description

Multiplies the magnitude of applied external forces.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    private ParticleSystem ps;
    public bool moduleEnabled = true;
    public float hSliderValue = 10.0f;

    void Start()
    {
        ps = GetComponent<ParticleSystem>();

        GameObject wind = new GameObject("Wind", typeof(WindZone));
        wind.transform.parent = ps.transform;
        wind.transform.localPosition = new Vector3(-4.0f, 0.0f, 0.0f);
        wind.GetComponent<WindZone>().mode = WindZoneMode.Spherical;
    }

    void Update()
    {
        var externalForces = ps.externalForces;
        externalForces.enabled = moduleEnabled;
        externalForces.multiplier = hSliderValue;
    }

    void OnGUI()
    {
        moduleEnabled = GUI.Toggle(new Rect(25, 45, 100, 30), moduleEnabled, "Enabled");
        hSliderValue = GUI.HorizontalSlider(new Rect(25, 85, 100, 30), hSliderValue, 0.0f, 100.0f);
    }
}