Help witj chaning Java to C#

Unity Engine
1

I have a java code but i want to make it into C#. Below is the java:

function Update () {
if (Input.GetMouseButton(0)) {
var hit : RaycastHit;
var ray : Ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if (Physics.Raycast(ray, hit)) {
mousePos = Vector3(Input.mousePosition.x, Input.mousePosition.y, 10);
hit.transform.position = Camera.main.ScreenToWorldPoint(mousePos);
}
}
}

I have tried outting it to C# but i don’t know why it wont work, can someone help please:

using UnityEngine;
using System.Collections;

public class Movebody : MonoBehaviour {

public Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
public RaycastHit hit;

void Update()
{
if(Input.GetMouseButton(0))
{
RaycastHit hit;
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if(Physics.Raycast(ray, 10))
{
mousPos = Vector3(Input.mousePosition.x, Input.mousePosition.y, 10);
hit.transform.position = Camera.main.ScreenToWorldPoint(mousePos);
}
}
}
}

2

Below are the code with some small changes.

  • Deleted your hit and ray global variables, they are ignored in your Update function since you declare two new local variables with the same name.
  • Deleted your local hit variable, since you don’t really use it.
  • Instead of creating a new Vector3 you can use your ray to place the object 10 units from the camera.
  • If you want to create a new Vector3 anyway you have to put new in front of Vector3, so new Vector3(..bla..);
using UnityEngine;
using System.Collections;

public class Movebody : MonoBehaviour {

void Update()
{
if(Input.GetMouseButton(0))
{
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if(Physics.Raycast(ray, 10))
{
hit.transform.position = ray.GetPoint(10);
}
}
}
}
3

use This

using UnityEngine;
using System.Collections;

public class testing : MonoBehaviour {

public Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
public RaycastHit hit;
public Vector3	mouse_Pos;

void Update()
{
if(Input.GetMouseButton(0))
{
RaycastHit hit;
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if(Physics.Raycast(ray, 10))
{
mouse_Pos = new Vector3(Input.mousePosition.x, Input.mousePosition.y, 10);
hit.transform.position= Camera.main.ScreenToWorldPoint(mouse_Pos);
}
}
}
}
4

Hey this doesn’t seem to work? I’ve attached the script to the main camera and the camera is in orthographic view, but i am getting three errors still;

ArgumentException: You are not allowed to call INTERNAL_CALL_ScreenPointToRay when declaring a variable.
Move it to the line after without a variable declaration.
Don’t use this function in the constructor or field initializers, instead move initialization code to the Awake or Start function.
UnityEngine.Camera.ScreenPointToRay (Vector3 position) (at C:/BuildAgent/work/d9c061b1c154f5ae/Runtime/ExportGenerated/Editor/UnityEngineCamera.cs:291)
Movebody…ctor ()
UnityEditorInternal.InternalEditorUtility:InspectorWindowDrag(Object[ ], Boolean)
UnityEditor.DockArea:OnGUI()

get_main can only be called from the main thread.
Constructors and field initializers will be executed from the loading thread when loading a scene.
Don’t use this function in the constructor or field initializers, instead move initialization code to the Awake or Start function.

ArgumentException: get_main can only be called from the main thread.
Constructors and field initializers will be executed from the loading thread when loading a scene.
Don’t use this function in the constructor or field initializers, instead move initialization code to the Awake or Start function.
Movebody…ctor ()

5

Comments 6th Line try Again Please

6

No erros but when i click on the object nothing happens

7

ok Great , Please clear your description here then I can be able to help better .

8

Thanks, I want to be able to click an object in game view, and be able to move it and then drop it in a position on screen?

9

more detail Please

10

I have an object that i want to move along the x and z axis not the y, and i want to be able to click on that object and be able to more it anywhere on the screen and when i lift my finger off the click button i want that gameobject to stay where i have moved it.

11

Please Add this script with Camera try here cube is my Object

var moveCube:boolean;


	function OnGUI()
	{
		if(GUI.Button(Rect(0,50,100,100),"Test"))
		{
		moveCube=true;
		}
	}

	function Update()
	{
		if(moveCube)
		{
		
		Cube=gameObject.Find("Cube");
		
		Cube.transform.Translate(Vector3(1,0,1));
		
		moveCube=false;
		
		}
	}
12

Yes this moves the cube in the z,x axis by pres the test button?

13

Now Its Done or You wants something more ? :slight_smile:

14

Yeah thanks heaps mate!