steeplechase/unity/Assets/Scripts/DragonMovement.cs

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

public class DragonMovement : MonoBehaviour
{
    [SerializeField] KeyCode FlapKey;
    Rigidbody2D _rigidbody;
    float _flapTime = 0f;
    [SerializeField] float FlapForce = 300f;
    [SerializeField] float FlapLength = .25f;
    Animator _animator;
    bool _inCloud;
    [SerializeField] GameObject _fireballPrefab;
    [SerializeField] GameObject _fireballSpawnPoint;


    private void OnTriggerEnter2D(Collider2D collision)
    {
        Debug.Log("ontriggerenter");
        _inCloud = true;
    }

    private void OnTriggerExit2D(Collider2D collision)
    {
        _inCloud = false;
    }
    void Start()
    {
        _rigidbody = this.GetComponent<Rigidbody2D>();
        _animator = this.GetComponent<Animator>();
    }

    private void Update()
    {
        if (Input.GetKeyDown(FlapKey))
        {
            Flap();
            Shoot();
        }
    }

    void Flap()
    {
        _flapTime = FlapLength;
        _animator.Play("fly");
    }

    void Shoot()
    {
        GameObject.Instantiate(_fireballPrefab, _fireballSpawnPoint.transform.position, Quaternion.identity);
    }

    void FixedUpdate()
    {
        if (_flapTime > 0f)
        {
            _rigidbody.AddForce(new Vector2(0f, FlapForce));
        }
        _flapTime -= Time.deltaTime;

        float horizontalSpeed = .4f;
        if (_inCloud)
        {
            horizontalSpeed = -1f;
        }

        transform.position = new Vector3(transform.position.x + horizontalSpeed, transform.position.y, transform.position.z);

    }
}