Added wave spawner

Assets/Scripts/Controller/EnemySpawner.meta

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Assets/Scripts/Controller/EnemySpawner/EnemyList.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+[CreateAssetMenu(fileName = "data", menuName = "Zhen/SpawnerList")]
+public class EnemyList : ScriptableObject
+{
+    public EnemyPrefabInfo[] List;
+}
+
+[Serializable]
+public struct EnemyPrefabInfo
+{
+    public GameObject prefab;
+    public float Difficulty;
+}

Assets/Scripts/Controller/EnemySpawner/EnemyList.cs.meta

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Assets/Scripts/Controller/EnemySpawner/EnemyList.cs~

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+[CreateAssetMenu(fileName = "data", menuName = "Zhen/SpawnerList", Order = 1)]
+public class EnemyList : MonoBehaviour
+{
+    // Start is called before the first frame update
+    void Start()
+    {
+        
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        
+    }
+}

Assets/Scripts/Controller/EnemySpawner/EnemySpawner.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using Unity.VisualScripting;
+using UnityEngine;
+
+public class NewBehaviourScript : MonoBehaviour
+{
+    // Shared
+    public int Wave = 0;
+    public float difficulty = 0;
+
+    // Inspector
+    [SerializeField] private float difficultyIncreasePerWave = 0.1f;
+    [SerializeField] private float WaveTime;
+    [SerializeField] private EnemyList enemyList;
+
+    // Private
+    private bool nextWaveRequested = false;
+    private float timer = 0f;
+
+    public void StartSpawning() => StartCoroutine(SpawnLoop());
+    public void StartNextWave() => nextWaveRequested = true;
+
+    private IEnumerator SpawnLoop()
+    {
+        while (true)
+        {
+            yield return new WaitUntil(() => timer > WaveTime || nextWaveRequested);
+
+            SpawnWave(difficulty);
+
+            Wave++;
+            difficulty *= difficultyIncreasePerWave + 1;
+        }
+
+    }
+
+    void SpawnWave(float difficulty)
+    {
+        var decendingList = enemyList.List.OrderByDescending(x => x.Difficulty).ToArray();
+        for (int i = 0; i < decendingList.Length; i++)
+        {
+            while (difficulty > decendingList[i].Difficulty)
+            {
+                Instantiate(decendingList[i].prefab);
+                difficulty -= decendingList[i].Difficulty;
+            }
+        }
+    }
+}

Assets/Scripts/Controller/EnemySpawner/EnemySpawner.cs.meta

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