Unity-SpaceShooter/Assets/Scripts/PlayerController.cs

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

[System.Serializable]
public class Boundary
{
    public float xMin, xMax, zMin, zMax;
}

public class PlayerController : MonoBehaviour
{
    public float speed, tilt, fireRate;
    private float nextFire;
    public Boundary boundary;
    public GameObject shot;
    public Transform shotSpawn;
    public SimpleTouchPad touchPad;
    public SimpleTouchAreaButton areaButton;
    private Rigidbody rb;
    private AudioSource fireSound;
    private Quaternion calibrateQuaternion;
 
    void Start()
    {
        CalibrateAccellerometer();
    }
    
    void Update()
    {
        if (areaButton.CanFire() && Time.time > nextFire)
        {
            nextFire = Time.time + fireRate;
            Instantiate(shot, shotSpawn.position, shotSpawn.rotation);
            fireSound = GetComponent<AudioSource>();
            fireSound.Play();
        }
    }
    void FixedUpdate ()
    {
        rb = GetComponent<Rigidbody>();

//      float moveHorizonal = Input.GetAxis("Horizontal");
//      float moveVertical = Input.GetAxis("Vertical");
//      Vector3 movement = new Vector3(moveHorizonal, 0.0f, moveVertical);

//      Vector3 accelerationRaw = Input.acceleration;
//      Vector3 acceleration = FixAcceleration(accelerationRaw);
//	    Vector3 movement = new Vector3(acceleration.x, 0.0f, acceleration.y);

	    Vector2 direction = touchPad.GetDirection();
        Vector3 movement = new Vector3(direction.x, 0.0f, direction.y);

        rb.velocity = movement * speed;
        rb.position = new Vector3
        (
            Mathf.Clamp(rb.position.x, boundary.xMin, boundary.xMax),
            0.0f,
            Mathf.Clamp(rb.position.z, boundary.zMin, boundary.zMax)
        );
        rb.rotation = Quaternion.Euler(0.0f, 0.0f, rb.velocity.x * -tilt);
    }

    void CalibrateAccellerometer()
    {
        Vector3 accelerationSnapshot = Input.acceleration;
        Quaternion rotateQuaternion = Quaternion.FromToRotation(new Vector3 (0.0f, 0.0f, -1.0f), accelerationSnapshot);
        calibrateQuaternion = Quaternion.Inverse(rotateQuaternion);
    }

    Vector3 FixAcceleration (Vector3 acceleration)
    {
        Vector3 fixedAcceleration = calibrateQuaternion * acceleration;
        return fixedAcceleration;
    }
}