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

public class FlowDirectionControl : MonoBehaviour
{
    public Material mat;
    public Vector2 direction = new Vector2(1, 1); // 斜向右上
    public float speed = 1f;

    void Update()
    {
        mat.SetVector("_FlowDir", direction.normalized);
        mat.SetFloat("_FlowSpeed", speed);
    }
}