ParticleSystem.collision

説明

Collision モジュールにアクセスします。

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 coll = ps.collision;
        coll.enabled = true;
        coll.bounce = 0.5f;
    }
}