ParticleSystem.externalForces

설명

Access the particle system external forces module.

Particle system modules do not need to be reassigned back to the system; they are interfaces and not independent objects.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Start() {
        ParticleSystem ps = GetComponent<ParticleSystem>();
        var ex = ps.externalForces;
        ex.enabled = true;
        ex.multiplier = 0.1f;
    }
}