Here is my ugly code. It stops the thrust sound if playing and disables player controls while transitioning.
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;
using UnityEngine.SceneManagement;
public class Rocket : MonoBehaviour {
[SerializeField] float rcsThrust = 200f;
[SerializeField] float mainThrust = 20f;
[SerializeField] TextMeshProUGUI collisionMessage;
Rigidbody rigidBody;
AudioSource audioSource;
enum State { Alive, Dying, Transcending}
State state = State.Alive;
// Use this for initialization
void Start ()
{
rigidBody = GetComponent<Rigidbody>();
audioSource = GetComponent<AudioSource>();
}
// Update is called once per frame
void Update () {
Thrust();
Rotate();
}
private void Thrust()
{
if (state != State.Alive)
{
audioSource.Stop();
return;
}
if (Input.GetKeyDown(KeyCode.Space))
{
audioSource.Play();
}
if (Input.GetKeyUp(KeyCode.Space))
{
audioSource.Stop();
}
if (Input.GetKey(KeyCode.Space)) // can thrust while rotating
{
rigidBody.AddRelativeForce(Vector3.up * mainThrust);
}
}
private void Rotate()
{
if (state != State.Alive)
{
return;
}
float rotationThisFrame = rcsThrust * Time.deltaTime;
float rotationDirection = 0f;
rigidBody.freezeRotation = true; // take manual control of rotation
if (Input.GetKey(KeyCode.A))
{
rotationDirection++;
}
if (Input.GetKey(KeyCode.D))
{
rotationDirection--;
}
transform.Rotate(Vector3.forward * rotationDirection * rotationThisFrame);
rigidBody.freezeRotation = false; // resume physics (return control)
}
private void OnCollisionEnter(Collision collision)
{
switch (collision.gameObject.tag)
{
case "Goal":
state = State.Transcending;
Invoke("LoadNextScene", 1f); // parameterise time
break;
case "Deadly":
state = State.Dying;
collisionMessage.text = collision.gameObject.tag.ToString();
Invoke("LoadFirstScene", 1f);
break;
case "Fuel":
collisionMessage.text = collision.gameObject.tag.ToString();
break;
}
}
private void LoadNextScene()
{
SceneManager.LoadScene(1); // todo allow for more than 2 levels
}
private void LoadFirstScene()
{
SceneManager.LoadScene(0);
}
private void OnCollisionExit(Collision collision)
{
collisionMessage.text = "";
}
}