VirtualFramework/Assets/Art/Fire/Scripts/Fire.cs

using System.Collections;
using System.Collections.Generic;
using UnityEditor.UIElements;
using UnityEngine;

public class Fire : MonoBehaviour
{
    [Header("0为硬火，1为软火")]
    [Range(0, 1)] public float Value;
    
    public ParticleSystem fireBig;
    public ParticleSystem fireSmall;

    public Vector2 LifeTime;

    public Vector2 Size;

    public Vector2 Gravity;

    public Vector2 Count;

    public Color mainColor;

    private ParticleSystem.MainModule big;
    private ParticleSystem.MainModule small;

    ParticleSystem.SizeOverLifetimeModule bigSize;
    ParticleSystem.SizeOverLifetimeModule smallSize;

    private ParticleSystem.EmissionModule smallemission;

    private ParticleSystem.MinMaxCurve curr;
    
    // Start is called before the first frame update
    void Start()
    {
        big = fireBig.main;
        small = fireSmall.main;

        bigSize = fireBig.sizeOverLifetime;
        smallSize = fireSmall.sizeOverLifetime;

        smallemission=fireSmall.emission;

        curr = new ParticleSystem.MinMaxCurve();
    }

    // Update is called once per frame
    void Update()
    {
        big.startColor = Color.Lerp(mainColor, Color.white, Value);
        big.startLifetime = Mathf.Lerp(LifeTime.x,LifeTime.y,Value);
        small.startLifetime = Mathf.Lerp(LifeTime.x,LifeTime.y,Value);

        big.startSize = Mathf.Lerp(Size.x,Size.y,Value);
        small.startSize = Mathf.Lerp(Size.x,Size.y,Value);
        
        big.gravityModifier = Mathf.Lerp(Gravity.x,Gravity.y,Value);
        small.gravityModifier = Mathf.Lerp(Gravity.x,Gravity.y,Value);
        curr = new ParticleSystem.MinMaxCurve(1,
            AnimationCurve.EaseInOut(0, Mathf.Lerp(1, 0.3f, Value), 1, Mathf.Lerp(0.3f, 1, Value)));
        bigSize.size = curr;
        smallSize.size = curr;
        smallemission.rateOverTime=Mathf.Lerp(Count.x,Count.y,Value);

    }
}