add

xiaofang/Assets/NatureManufacture Assets/Fire and Smoke Particles/Materials/Lit_Normal/M_Smoke_Normal_Based_Lit 1.mat

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+    - _Emission_Color: {r: 102.463745, g: 17.180916, b: 0, a: 1}
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     - _EmissiveColor: {r: 0, g: 0, b: 0, a: 1}
     - _EmissiveColorLDR: {r: 0, g: 0, b: 0, a: 1}

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xiaofang/Assets/Scenes/firetest.unity

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xiaofang/Assets/Script/Item/Firelive.cs

@@ -2,18 +2,126 @@ using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
+
+/*
+ */
 public class Firelive : MonoBehaviour
 {
-    public GameObject fire;
+    //火焰预制体
+    public GameObject minfire;
+    public GameObject bigfire;
+
+    //火势值，用于判断火是否灭，是否变大
+    private float fireNumber=0;
+    //每秒的火势值
+    public float FireNumber;
+    //判定大火小火的值
+    public float bigFireNumber;
+
+    //生成半径
+    public float spreadRadius;
+
+    public enum WindDirection { North, South, East, West }
+    public WindDirection windDirection = WindDirection.North; // 风向
+
+    private bool isBurning = false;
+    private GameObject currentFire;  // 当前生成的火焰实例
+
+    public int SpreadFireNumber=1;
+
+    private bool Canbig = true;
     // Start is called before the first frame update
     void Start()
     {
-        
+        StartBurning();
     }
 
     // Update is called once per frame
     void Update()
     {
+        if (isBurning&&Canbig)
+        {
+            // 检查火势值是否超过阈值
+            if (fireNumber< bigFireNumber)
+            {
+                fireNumber += FireNumber * Time.deltaTime;
+                return;
+            }        
+            SwitchToMaxFire();           
+        }
         
     }
+
+    //火焰初始化
+    private void StartBurning()
+    {
+        if (!isBurning)
+        {
+            isBurning = true;
+
+            // 初始在pos位置生成小火焰预制体
+            currentFire = Instantiate(minfire, transform.position, Quaternion.identity);   
+           
+        }
+    }
+
+
+    private void SwitchToMaxFire()
+    {
+        // 销毁当前小火焰，替换为大火焰
+        Destroy(currentFire);
+        currentFire=Instantiate(bigfire, transform.position, Quaternion.identity);
+        Canbig = false;
+        StartCoroutine(DelayedSpread());
+
+    }
+
+    // 延迟蔓延
+    private IEnumerator DelayedSpread()
+    {
+        // 等待设定的延迟时间
+        yield return new WaitForSeconds(3);
+
+        // 开始蔓延火焰
+        SpreadFireInWindDirection();
+    }
+
+    //根据风向改变
+    private void SpreadFireInWindDirection()
+    {
+        if (SpreadFireNumber<=0)
+        {
+            return;
+        }
+        SpreadFireNumber--;
+
+        Vector3 spreadDirection = Vector3.zero;
+
+        // 根据风向设置火焰蔓延的方向
+        switch (windDirection)
+        {
+            case WindDirection.North:
+                spreadDirection = Vector3.forward;
+                break;
+            case WindDirection.South:
+                spreadDirection = Vector3.back;
+                break;
+            case WindDirection.East:
+                spreadDirection = Vector3.right;
+                break;
+            case WindDirection.West:
+                spreadDirection = Vector3.left;
+                break;
+        }
+
+        // 获取风向的目标位置
+        Vector3 targetPosition = transform.position + spreadDirection * spreadRadius;
+
+        // 在目标位置实例化新的pos
+        Instantiate(gameObject, targetPosition, Quaternion.identity);
+       // GameObject go = Instantiate(gameObject, targetPosition, Quaternion.identity);
+        //go.AddComponent<Firelive>();
+
+    }
+
 }