• Place spaceship model in your Scene (I will be using a Spaceship model from this Asset Store package)

• Create a new GameObject, call it "Spaceship"

• Move the Spaceship model inside the "Spaceship" object and change its position to (0, 0, 0)

• Create a new script, call it "SC_SpaceshipController" and paste the code below inside it:

CODE:

• using System.Collections;

• using System.Collections.Generic;

• using UnityEngine;

• 
  

• [RequireComponent(typeof(Rigidbody))]

• 
  

• public class SC_SpaceshipController : MonoBehaviour

• {

• public float normalSpeed = 25f;

• public float accelerationSpeed = 45f;

• public Transform cameraPosition;

• public Camera mainCamera;

• public Transform spaceshipRoot;

• public float rotationSpeed = 2.0f;

• public float cameraSmooth = 4f;

• public RectTransform crosshairTexture;

• 
  

• float speed;

• Rigidbody r;

• Quaternion lookRotation;

• float rotationZ = 0;

• float mouseXSmooth = 0;

• float mouseYSmooth = 0;

• Vector3 defaultShipRotation;

• 
  

• // Start is called before the first frame update

• void Start()

• {

• r = GetComponent<Rigidbody>();

• r.useGravity = false;

• lookRotation = transform.rotation;

• defaultShipRotation = spaceshipRoot.localEulerAngles;

• rotationZ = defaultShipRotation.z;

• 
  

• Cursor.lockState = CursorLockMode.Locked;

• Cursor.visible = false;

• }

• 
  

• void FixedUpdate()

• {

• //Press Right Mouse Button to accelerate

• if (Input.GetMouseButton(1))

• {

• speed = Mathf.Lerp(speed, accelerationSpeed, Time.deltaTime * 3);

• }

• else

• {

• speed = Mathf.Lerp(speed, normalSpeed, Time.deltaTime * 10);

• }

• 
  

• //Set moveDirection to the vertical axis (up and down keys) * speed

• Vector3 moveDirection = new Vector3(0, 0, speed);

• //Transform the vector3 to local space

• moveDirection = transform.TransformDirection(moveDirection);

• //Set the velocity, so you can move

• r.velocity = new Vector3(moveDirection.x, moveDirection.y, moveDirection.z);

• 
  

• //Camera follow

• mainCamera.transform.position = Vector3.Lerp(mainCamera.transform.position, cameraPosition.position, Time.deltaTime * cameraSmooth);

• mainCamera.transform.rotation = Quaternion.Lerp(mainCamera.transform.rotation, cameraPosition.rotation, Time.deltaTime * cameraSmooth);

• 
  

• //Rotation

• float rotationZTmp = 0;

• if (Input.GetKey(KeyCode.A))

• {

• rotationZTmp = 1;

• }

• else if (Input.GetKey(KeyCode.D))

• {

• rotationZTmp = -1;

• }

• mouseXSmooth = Mathf.Lerp(mouseXSmooth, Input.GetAxis("Mouse X") * rotationSpeed, Time.deltaTime * cameraSmooth);

• mouseYSmooth = Mathf.Lerp(mouseYSmooth, Input.GetAxis("Mouse Y") * rotationSpeed, Time.deltaTime * cameraSmooth);

• Quaternion localRotation = Quaternion.Euler(-mouseYSmooth, mouseXSmooth, rotationZTmp * rotationSpeed);

• lookRotation = lookRotation * localRotation;

• transform.rotation = lookRotation;

• rotationZ -= mouseXSmooth;

• rotationZ = Mathf.Clamp(rotationZ, -45, 45);

• spaceshipRoot.transform.localEulerAngles = new Vector3(defaultShipRotation.x, defaultShipRotation.y, rotationZ);

• rotationZ = Mathf.Lerp(rotationZ, defaultShipRotation.z, Time.deltaTime * cameraSmooth);

• 
  

• //Update crosshair texture

• if (crosshairTexture)

• {

• crosshairTexture.position = mainCamera.WorldToScreenPoint(transform.position + transform.forward * 100);

• }

• }

• }

• Attach SC_SpaceshipController script to "Spaceship" object

• Create a new GameObject, call it "CameraPosition" and move it inside "Spaceship" object

• Move the Main Camera inside "CameraPosition" object and change its position to (0, 0, 0)

• Tweak the "CameraPosition" object position till you happy with the result

• Move the Main Camera outside of "Spaceship" object

• In SC_SpaceshipController assign Camera Position, Main Camera, and Spaceship Root (this should be a transform of a spaceship model) variables

• Lastly create new UI Canvas (GameObject -> UI -> Canvas)

• Right-click on Canvas object -> UI -> Image

• Change alignment of a new image to the top left

• Assign the sprite below to the image

• Finally, assign the newly created image to Crosshair Texture in SC_SpaceshipController

The Spaceship controller is ready. Use mouse to look around, A/D to rotate along the Z-axis, and Right Mouse Button to accelerate.