using UnityEngine;

public class FireFlameEffect : MonoBehaviour
{
    public float scaleSpeed = 2f;    // 缩放速度
    public float scaleAmount = 0.1f; // 缩放幅度
    public float rotationSpeed = 1f; // 旋转速度
    public float rotationAmount = 5f; // 旋转角度幅度
    public float flickerSpeed = 5f;  // 火焰闪烁速度
    public float flickerAmount = 0.1f; // 火焰闪烁透明度幅度

    private Vector3 originalScale;
    private SpriteRenderer spriteRenderer;
    private float baseAlpha;         // 火焰的基础透明度

    void Start()
    {
        originalScale = transform.localScale;  // 记录原始缩放值
        spriteRenderer = GetComponent<SpriteRenderer>(); // 获取SpriteRenderer组件
        baseAlpha = spriteRenderer.color.a;    // 获取火焰的基础透明度
    }

    void Update()
    {
        // 缩放效果，使用Perlin噪声增加自然的变化
        float scale = Mathf.PerlinNoise(Time.time * scaleSpeed, 0f) * scaleAmount + 1f;
        transform.localScale = new Vector3(originalScale.x * scale, originalScale.y * scale, originalScale.z);

        // 旋转效果，模拟火焰轻微摇晃
        float rotation = Mathf.Sin(Time.time * rotationSpeed) * rotationAmount;
        transform.rotation = Quaternion.Euler(0, 0, rotation);

        // 透明度闪烁效果
        Color currentColor = spriteRenderer.color;
        float flicker = Mathf.PerlinNoise(Time.time * flickerSpeed, 1f) * flickerAmount;
        spriteRenderer.color = new Color(currentColor.r, currentColor.g, currentColor.b, baseAlpha - flicker);
    }
}