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Assets/Scripts/Enemies/RocketEnemy.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class RocketEnemy : MonoBehaviour, IPooledObject{
+
+    public float speed;
+    public GameObject particles;
+    public PolygonCollider2D polCol;
+    public GameObject spawnParticles;
+    public GameObject rocket;
+    public Color level1Color;
+    public Color level2Color;
+    public Color level3Color;
+    public SpriteRenderer[] spriteRenderers;
+
+    GameController gameController;
+    Animator anim;
+    bool spawned;
+    bool ready;
+    GameObject target;
+
+    public void OnObjectSpawn(){
+        gameController = FindObjectOfType<GameController>();
+        if (gameController.level == 1 || gameController.level == 0){
+            foreach (SpriteRenderer r in spriteRenderers){
+                r.color = level1Color;
+            }
+            ParticleSystem ps = spawnParticles.GetComponent<ParticleSystem>();
+            var main = ps.main;
+            main.startColor = level1Color;
+        }
+        if (gameController.level == 2){
+            foreach (SpriteRenderer r in spriteRenderers){
+                r.color = level2Color;
+            }
+            ParticleSystem ps = spawnParticles.GetComponent<ParticleSystem>();
+            var main = ps.main;
+            main.startColor = level2Color;
+        }
+        if (gameController.level == 3){
+            foreach (SpriteRenderer r in spriteRenderers){
+                r.color = level3Color;
+            }
+            ParticleSystem ps = spawnParticles.GetComponent<ParticleSystem>();
+            var main = ps.main;
+            main.startColor = level3Color;
+        }
+        anim = GetComponent<Animator>();
+        Invoke(nameof(StopAnimation), 1f);
+        anim.SetBool("Spawned", false);
+        particles.SetActive(false);
+        ready = false;
+        spawned = false;
+        target = GameObject.FindGameObjectWithTag("Player");
+        Invoke(nameof(Ready), 2f);
+        polCol.enabled = false;
+        spawnParticles.SetActive(true);
+        spawnParticles.GetComponent<ParticleSystem>().Play();
+    }
+
+    // Update is called once per frame
+    void Update(){
+        if (ready){
+            transform.Translate(Vector3.up * speed * Time.deltaTime);
+        }else if(spawned){
+            Vector2 targetPos = target.transform.position - transform.position;
+            float rotZ = Mathf.Atan2(targetPos.y, targetPos.x) * Mathf.Rad2Deg;
+            transform.rotation = Quaternion.Euler(0f, 0f, rotZ - 90);
+        }else if (!spawned){
+            Vector2 targetPos = target.transform.position - transform.position;
+            float rotZ = Mathf.Atan2(targetPos.y, targetPos.x) * Mathf.Rad2Deg;
+            rocket.transform.rotation = Quaternion.Euler(0f, 0f, rotZ - 90);
+        }
+    }
+
+    void OnCollisionEnter2D(Collision2D col){
+        if(col.gameObject.CompareTag("Wall")){
+            Vector2 targetPos = target.transform.position - transform.position;
+            float rotZ = Mathf.Atan2(targetPos.y, targetPos.x) * Mathf.Rad2Deg;
+            transform.rotation = Quaternion.Euler(0f, 0f, rotZ - 90);
+        }
+        if(col.gameObject.CompareTag("Player")){
+            ObjectPooler.Instance.SpawnFromPool("RocketEnemyDeath", transform.position, Quaternion.identity);
+            AudioManager.instance.Play("EnemyDeath");
+            gameObject.SetActive(false);
+            ScreenShake.Shake(1f, .15f);
+        }
+    }
+
+    void OnTriggerEnter2D(Collider2D col){
+        if (col.CompareTag("Bullet") || col.CompareTag("BigBullet")){
+            AudioManager.instance.Play("EnemyDeath");
+            ObjectPooler.Instance.SpawnFromPool("RocketEnemyDeath", transform.position, Quaternion.identity);
+            ScreenShake.Shake(1f, .15f);
+            gameObject.SetActive(false);
+        }
+    }
+
+    #region OnSpawn
+    void StopAnimation(){
+        anim.SetBool("Spawned", true);
+    }
+
+    void Ready(){
+        Invoke(nameof(StartRunning), 1f);
+        spawned = true;
+        Invoke(nameof(EnableCollider), 0.5f);
+        rocket.transform.rotation = Quaternion.Euler(Vector3.zero);
+    }
+
+    void EnableCollider(){
+        polCol.enabled = true;
+    }
+
+    void StartRunning(){
+        ready = true;
+        particles.SetActive(true);
+    }
+    #endregion
+}