using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class RainDirector : MonoBehaviour
{
    public Vector3 planetCenter;
    void Start()
    {
        ParticleSystem[] systems = GetComponentsInChildren<ParticleSystem>();

        foreach (ParticleSystem ps in systems)
        {
            Vector3 dirToCenter = (planetCenter - transform.position).normalized;

            var velocityOverLifetime = ps.velocityOverLifetime;
            velocityOverLifetime.enabled = true;
            velocityOverLifetime.space = ParticleSystemSimulationSpace.World;
            velocityOverLifetime.x = dirToCenter.x * 20f;
            velocityOverLifetime.y = dirToCenter.y * 20f;
            velocityOverLifetime.z = dirToCenter.z * 20f;

            var main = ps.main;
            main.gravityModifier = 0f;
        }
    }
}