update

Packages/com.arongranberg.astar/ExampleScenes~/Scenes/OldExamples/Example18_RTS/RTSWaveSpawner.cs

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+using UnityEngine;
+using UnityEngine.UI;
+using System.Collections;
+using System.Linq;
+
+namespace Pathfinding.Examples.RTS {
+	[HelpURL("https://arongranberg.com/astar/documentation/stable/rtswavespawner.html")]
+	public class RTSWaveSpawner : MonoBehaviour {
+		public Wave[] waves;
+
+		public Transform target;
+		public Text waveCounter;
+		public int team = 2;
+
+		[System.Serializable]
+		public class Wave {
+			public GameObject prefab;
+			public Transform spawnPoint;
+			public float delay;
+			public int count;
+			public int health;
+		}
+
+		// Use this for initialization
+		IEnumerator Start () {
+			float lastWave = 0;
+			float multiplier = 1;
+
+			for (int it = 0;; it++) {
+				for (int i = 0; i < waves.Length; i++) {
+					while (true) {
+						float remaining = waves[i].delay - (Time.time - lastWave);
+						if (remaining <= 0) break;
+						waveCounter.text = Mathf.RoundToInt(remaining).ToString();
+						yield return null;
+					}
+					waveCounter.text = "!";
+
+					int from = i;
+					while (i + 1 < waves.Length && waves[i+1].delay == 0) i++;
+
+					var toSpawn = waves.Skip(from).Take(i - from + 1).ToArray();
+					var names = toSpawn.Select(w => w.spawnPoint.gameObject.name).Distinct().OrderBy(s => s).ToArray();
+					var message = "Incoming enemies from ";
+					for (int j = 0; j < names.Length; j++) {
+						if (j > 0) message += j == names.Length - 1 ? " and " : ", ";
+						message += names[j];
+					}
+					Debug.Log(message);
+
+					foreach (var wave in toSpawn) {
+						for (int j = 0; j < wave.count; j++) {
+							var rnd = Random.insideUnitSphere * 10;
+							rnd.y = 0;
+							var go = GameObject.Instantiate(wave.prefab, wave.spawnPoint.position + rnd, wave.spawnPoint.rotation) as GameObject;
+							var unit = go.GetComponent<RTSUnit>();
+							unit.team = team;
+							unit.maxHealth = unit.health = wave.health * multiplier;
+							unit.SetDestination(target.position, MovementMode.AttackMove);
+						}
+					}
+
+					yield return new WaitForSeconds(10);
+					lastWave = Time.time;
+				}
+
+				multiplier *= 2;
+			}
+		}
+
+		// Update is called once per frame
+		void Update () {
+		}
+	}
+}