Boat Controller

gistfile1.cs

using UnityEngine;
using System.Collections;


public class ShipController : MonoBehaviour {
	public GameObject oRudder;
	public float throttle = 0.0f;
	public float throttleRate = 0.1f;
	public float throttleStep = 0.1f;
	public float accRate = 4.3f;
	public float life = 100f;
	public float fuel = 100f;
	public float rudder = 0.0f;
	public float maxRudder = 40.0f;
	public float rudderDelta = 10.0f;
	public float  speed = 1.0f;
	public float  acceleration = 1.0f;
	public float  maxspeed = 2.0f;
	public float  minspeed = -0.25f;
	public float  heading = 0.0f;
	public float speedRate = 0.5f;
	private bool rudderControl;
	private float rudderAngle = 0.0f;
	// Use this for initialization
	void Start () {
		rudderControl = true;
	}
	
	// Update is called once per frame
	void Update () {
		float rot = transform.rotation.eulerAngles.z;

		speed = rigidbody2D.velocity.sqrMagnitude;
		// Steering
		rudder += Input.GetAxis("Horizontal") * rudderDelta * Time.deltaTime;
		if( rudder > maxRudder ){
			rudder = maxRudder;
		} else if ( rudder < -maxRudder ){
			rudder = -maxRudder;
		}
		float angle = (rudder + rot + 180);
		Vector3 dir = Quaternion.AngleAxis(angle, Vector3.forward) * Vector3.down;


		// Up Key - Increase Throttle
		if(Input.GetAxis ("Vertical") > 0){
			throttle = throttle + throttleStep;
		}

		// Down Key - Decrease Throttle
		if(Input.GetAxis ("Vertical") < 0){
			throttle = throttle - throttleStep;
		}

		// Rudder Force
		rigidbody2D.AddForceAtPosition(dir *speed * speedRate, oRudder.gameObject.transform.position);

		// Throttle Force
		rigidbody2D.AddForce(transform.up * throttle * throttleRate );


	}



	float signedSqrt(float x ){
		float r = Mathf.Sqrt(Mathf.Abs( x ));
		if( x < 0 ){
			return -r;
		} else {
			return r;
		}
	}
}