ihob/Assets/PegLegIo/scripts/Boss2Controller.cs

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

public class Boss2Controller : MonoBehaviour {
    [SerializeField] Rigidbody2D body;
    [SerializeField] float waitTime = 8f;
    [SerializeField] float smoothness = 20f;
    [SerializeField] float maxSpeed = 150f;

    [SerializeField] int border = 64;
    [SerializeField] GameObject bullet;

    float intentX = 0;
    float intentY = 0;
    AudioSource audioSource;
    PLIGameController game;

    // Start is called before the first frame update
    void Start() {
        body = GetComponent<Rigidbody2D>();
        game = GameObject.FindGameObjectWithTag("PegLegIoGame").GetComponent<PLIGameController>();
        audioSource = game.GetComponent<AudioSource>();
        StartCoroutine(PickSomewhere());
        StartCoroutine(GoCraCy());
    }

    IEnumerator PickSomewhere() {
        intentX = ((transform.position.x > 0) ? 1 : -1) * 100;
        intentY = 0;
        yield return new WaitForSeconds(waitTime);
        intentX = ((transform.position.x > 0) ? -1 : 1) * 150;
        intentY = 100;
        yield return new WaitForSeconds(waitTime);
        intentX = ((transform.position.x > 0) ? 1 : -1) * 80;
        intentY = 50;
        yield return new WaitForSeconds(waitTime);
        intentX = ((transform.position.x > 0) ? -1 : 1) * 170;
        intentY = 0;
        yield return new WaitForSeconds(waitTime);
        intentX = transform.position.x;
        intentY = -300;
        yield return new WaitForSeconds(waitTime);
        Destroy(gameObject);
    }

    IEnumerator GoCraCy() {
        yield return new WaitForSeconds(5.0f);
        while (true) {
            float bulletsPerRevolution = 10f;
            float bulletSpeed = 40f;
            int c = 0;
            float a = 0f;
            while (c < 15) {
                c++;
                GameObject b1 = Instantiate(bullet);
                b1.transform.position = transform.position;
                b1.GetComponent<Rigidbody2D>().velocity = new Vector2(
                    1.0f * bulletSpeed * Mathf.Cos(a),
                    1.0f * bulletSpeed * Mathf.Sin(a));
                GameObject b2 = Instantiate(bullet);
                b2.transform.position = transform.position;
                b2.GetComponent<Rigidbody2D>().velocity = new Vector2(
                    1.5f * bulletSpeed * Mathf.Cos(a + Mathf.PI / 8),
                    1.5f * bulletSpeed * Mathf.Sin(a + Mathf.PI / 8));
                GameObject b3 = Instantiate(bullet);
                b3.transform.position = transform.position;
                b3.GetComponent<Rigidbody2D>().velocity = new Vector2(
                    2.0f * bulletSpeed * Mathf.Cos(a - Mathf.PI / 8),
                    2.0f * bulletSpeed * Mathf.Sin(a - Mathf.PI / 8));
                a += 2 * Mathf.PI / bulletsPerRevolution;
                yield return new WaitForSeconds(0.05f);
            }
            yield return new WaitForSeconds(3f);
        }
    }

    // Update is called once per frame
    void FixedUpdate() {
        Vector2 vel = body.velocity;
        Vector2.SmoothDamp(transform.position,
            new Vector2(intentX, intentY),
            ref vel,
            smoothness,
            maxSpeed);
        body.velocity = vel;
    }
}