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

namespace MyFrameworkPure
{
    /// <summary>
    /// 粒子缩放窗口
    /// </summary>
    public class ParticleScaleWindow : EditorWindow
    {
        private GameObject particleGO;
        private float scaleFactor = 1;
        [MenuItem("Tools/粒子缩放窗口")]
        static void InitWindow()
        {
            ParticleScaleWindow window = GetWindow<ParticleScaleWindow>();
            window.Show();
        }

        void OnGUI()
        {
            EditorGUILayout.BeginHorizontal();
            EditorGUILayout.LabelField("需要缩放的粒子");
            particleGO = EditorGUILayout.ObjectField(particleGO, typeof(GameObject), true) as GameObject;
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            EditorGUILayout.LabelField("缩放");
            scaleFactor = EditorGUILayout.FloatField(scaleFactor);
            EditorGUILayout.EndHorizontal();

            if (GUILayout.Button("缩放") && particleGO != null)
            {
                ScaleParticleSystem(particleGO, scaleFactor);
            }
        }

        public void ScaleParticleSystem(GameObject gameObj, float scale)
        {
            var hasParticleObj = false;
            var particles = gameObj.GetComponentsInChildren<ParticleSystem>(true);
            var max = particles.Length;
            for (int idx = 0; idx < max; idx++)
            {
                var particle = particles[idx];
                if (particle == null) continue;
                hasParticleObj = true;
                particle.startSize *= scale;
                particle.startSpeed *= scale;
                particle.startRotation *= scale;
                particle.transform.localScale *= scale;
            }
            if (hasParticleObj)
            {
                gameObj.transform.localScale = new Vector3(scale, scale, 1);
            }
        }
    }
}