Assign number to object in Unity 3D - unity3d

Question

I want to assign a number to objects in Unity 3D and the number should appear on the object. Please, I need help on a code to do this. I have little knowledge of C#, but I have been learning aggressively these days. I will appreciate any help. Thanks. Below is a sample code I assign to each of the object.
public class NumberHolder : MonoBehaviour
{
int myNumber = 0;
UnityEngine.UI.Text myTextField;
void Awake()
{
myNumber = UnityEngine.Random.Range(0,100) + 1;
myTextField = GetComponent<UnityEngine.UI.Text>();
}
void Start()
{
if(myTextField != null)
{
myTextField.text = "" + myNumber;
}
}
}

Answer 1

Try the script below. It should contain some tidbits to direct you. A couple things to note: for this script, your object must have a collider (doesn't matter which kind: 2D or 3D). Also, this script displays the object's number only when the mouse is over the object. I could tailor it to always show the object, but I gotta make you work a little. Plus, I think in the long run this will work splendidly for you, as you can dissect it.
I will give you a hint. What's the secret to drawing text at the object's position?
You need to convert the object's world space coordinates, to screen space coordinates and then overlay your text.
Consider the following code blocks.
These methods determine if the mouseposition on screen is over the object:
private void OnMouseEnter()
{
isVis = true;
}
private void OnMouseExit()
{
isVis = false;
}
These lines draw the objects number at the mouse location:
Vector2 mospos = Input.mousePosition;
mospos.y = Screen.height - mospos.y;
if (isVis)
{
GUI.Box(new Rect(Input.mousePosition.x + 2, Screen.height -
Input.mousePosition.y + 2, 128, 72),"" + myNumber);
}
Full class below. Hope it helps!
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class LocalLabelingScript : MonoBehaviour {
Monster beast;
bool isVis = false;
int myNumber;
private void Awake()
{
myNumber = UnityEngine.Random.Range(0,100) + 1;
}
private void OnGUI()
{
Vector2 mospos = Input.mousePosition;
mospos.y = Screen.height - mospos.y;
if (isVis)
{
GUI.Box(new Rect(Input.mousePosition.x + 2, Screen.height -
Input.mousePosition.y + 2, 128, 72),"" + myNumber);
}
private void OnMouseEnter()
{
isVis = true;
}
private void OnMouseExit()
{
isVis = false;
}
}