Translating from JavaScript to C#

Unity Engine
1

I am currently doing a course in software programming and one of my tasks is to create a game. I have found some code online to try to guide me to do what I want to do but it is in Java and i can’t find anything like it in C#. If anybody could help me translate from Java to C# I would be extremely thankful.

Here is the code;

var projectile : Rigidbody;
var chargeTime = -1.0;
function Update ()
{
var position = Input.mousePosition;
var newPosition = Vector3(position.x,position.y,camera.main.transform.position.y- projectile.transform.position.y);
var lastPosition = Camera.main.ScreenToWorldPoint(newPosition);
transform.LookAt(lastPosition);
transform.rotation.x = 0;
transform.rotation.z = 0;
var autoDestroySeconds = 2;

if(Input.GetMouseButtonDown(0))
{
chargeTime = Time.time;
}
if (!Input.GetMouseButton (0) && chargeTime != -1.0)
{
var speed = 5 + 10 * (Time.time - chargeTime);
ray = Camera.mainCamera.ScreenPointToRay (Input.mousePosition);
var hit : RaycastHit;
if (Physics.Raycast (ray, hit))
{
target = hit.point;
}

else
{
target = (ray.origin + ray.direction * 100);
}

direction = target - transform.position;
var instantiatedProjectile : Rigidbody = Instantiate (projectile, transform.position, Quaternion.FromToRotation (Vector3.forward, direction));
instantiatedProjectile.velocity = direction.normalized * speed;
Destroy (instantiatedProjectile, autoDestroySeconds);
chargeTime = -1.0;
}
}

2 
using UnityEngine;

class CustomComponent : MonoBehaviour
{
    public Rigidbody projectile;

    float chargeTime = -1.0f;

    void Update()
    {
        Vector3 position = Input.mousePosition;
        Vector3 newPosition = new Vector3(
            position.x,
            position.y,
            camera.main.transform.position.y - projectile.transform.position.y);
        Vector3 lastPosition = Camera.main.ScreenToWorldPoint(newPosition);

        transform.LookAt(lastPosition);
        transform.rotation.x = 0;
        transform.rotation.z = 0;

        float autoDestroySeconds = 2.0f;

        if (Input.GetMouseButtonDown(0))
        {
            chargeTime = Time.time;
        }
        if (!Input.GetMouseButton(0) && chargeTime != -1.0)
        {
            float speed = 5.0f + 10.0f * (Time.time - chargeTime);
            Ray ray = Camera.mainCamera.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;

            if (Physics.Raycast(ray, out hit)) target = hit.point;
            else                               target = ray.origin + 100.0f * ray.direction;

            direction = target - transform.position;
            Rigidbody instantiatedProjectile = Instantiate(
                projectile,
                transform.position,
                Quaternion.FromToRotation(Vector3.forward, direction)) as Rigidbody;

            instantiatedProjectile.velocity = direction.normalized * speed;
            Destroy(instantiatedProjectile, autoDestroySeconds);
            chargeTime = -1.0f;
        }
    } // of Update
} // of class CustomComponent

I didn’t test it, though! So you might ask additional questions, if I made a mistake. Note: You can use UnityScripts and C# Scripts alltogether. You don’t always need to translate them.

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