using UnityEngine.SceneManagement;
using UnityEngine;
using System;
public class Rocket : MonoBehaviour
{
enum State {Alive, Dying, Transcending};
State state = State.Alive;
[SerializeField]
float rcsThrust = 100f;
[SerializeField]
float mainThrust = 100f;
[SerializeField]
AudioClip mainEngine;
[SerializeField]
AudioClip death;
[SerializeField]
AudioClip nextLevel;
[SerializeField]
ParticleSystem mainEngineParticles;
[SerializeField]
ParticleSystem deathParticles;
[SerializeField]
ParticleSystem nextLevelParticles;
AudioSource audioSource;
Rigidbody rigidBody;
// Start is called before the first frame update
void Start()
{
audioSource = GetComponent<AudioSource>();
rigidBody = GetComponent<Rigidbody>();
}
// Update is called once per frame
void Update()
//switch off audio after dying
{
if(state == State.Alive){
Thrust();
Rotate();
}
}
void OnCollisionEnter(Collision collision)
{
if (state != State.Alive) { return; }
switch (collision.gameObject.tag)
{
case "Friendly":
//do nothing
break;
case "Finish":
StartSuccesSequence();
break;
default:
StartDeathSequence();
break;
}
}
private void StartDeathSequence()
{
state = State.Dying;
audioSource.Stop();
DyingSound();
deathParticles.Play();
Invoke("LoadFirstScene", 3f);
}
private void StartSuccesSequence()
{
state = State.Transcending;
audioSource.Stop();
NextLevelSound();
nextLevelParticles.Play();
Invoke("LoadNextScene", 3f);
}
private void DyingSound()
{
audioSource.PlayOneShot(death);
}
private void LoadFirstScene()
{
SceneManager.LoadScene(0);
}
private void LoadNextScene()
{
SceneManager.LoadScene(1);
}
private void NextLevelSound()
{
audioSource.PlayOneShot(nextLevel);
}
private void Thrust()
{
if (Input.GetKey(KeyCode.Space)) //can thrust while rotating
{
ApplyThrust();
}
else
{
audioSource.Stop();
mainEngineParticles.Stop();
}
}
private void ApplyThrust()
{
rigidBody.AddRelativeForce(Vector3.up * mainThrust);
if (!audioSource.isPlaying)
{
audioSource.PlayOneShot(mainEngine);
}
mainEngineParticles.Play();
}
private void Rotate()
{
float rotationThisFrame = rcsThrust * Time.deltaTime;
rigidBody.freezeRotation = true; // take manual control of rotation
if (Input.GetKey(KeyCode.A))
{
transform.Rotate(Vector3.forward * rotationThisFrame);
}
else if (Input.GetKey(KeyCode.D))
{
transform.Rotate(-Vector3.forward * rotationThisFrame);
}
rigidBody.freezeRotation = false; //resume physics control of rotation
}
}