How To Detect Mouse Click Or Touch On A GameObject Using C# Script In Unity 3D

Introduction

 

This article is about how to detect mouse click or touch on a GameObject using C# Script in Unity

 

Prerequisites

 

Unity Environment version 2018.4.25f1

 

Create the project

 

 

 I pressed ctrl + s to save this scene  

 

Create the Script

 

Add a new C# Script, Right-click on Assets. Select Create >> C# script.

 

 

Rename the script as SceneOneScript.

 

 

Create Empty GameObject in Unity

 

Click on the "GameObject" menu in the menu bar. Select "Create Empty" option.

 

 

 

Rename the Create Empty as Scripts

 

 

Select the Right click create new scene

 

 

I am going to rename the scene as SceneTwo

 

 

Double click to open it create another script scene - Script again Right-click on Assets. Select Create >> C# script.

 

 

 

Rename the Script as SceneTwoScript

 

 

Create Empty GameObject in Unity

 

click on the "GameObject" menu in the menu bar. Select "Create Empty" option. 

 

 

Rename the Create Empty as Scripts

 

 

Drag and drop your script to the scripts 

 

 

Make sure to add your scenes in the Build Settings window, choose “Build Settings” Add open scene.

 

 

 

Double click in Scene One and it will open Visual Studio 2019, which is my programming integrated development environment (IDE) for Unity. Write the code as shown below:

 

  

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class SceneOneScript: MonoBehaviour {
  // Start is called before the first frame update
  void Start() {}

  // Update is called once per frame
  void Update() {
    if (Input.GetMouseButtonDown(0)) {
      Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
      RaycastHit hit;
      if (Physics.Raycast(ray, out hit)) {
        //Select stage
        if (hit.transform.name == "Cube") {
          SceneManager.LoadScene("SceneTwo");
        }
      }
    }
  }
}

Save the Program

 

Create a cube in Unity.

 

Click on game object 3d and then I'm going to create a cube.

 

 

 

Click on SceneTwo open the scene

 

 

 

Create The Sphere in Scene View

 

Select GameObject, click the 3D object and pick the Sphere option. The Sphere object will be displayed in the scene view. The name is displayed in the hierarchy view.

 

 

InScene Two, double click it and it will open Visual Studio 2019, which is my programming integrated development environment (IDE) for Unity. Write the code as shown below:

 

 

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class SceneTwoScript: MonoBehaviour {
  // Start is called before the first frame update
  void Start() {}

  // Update is called once per frame
  void Update() {
    if (Input.GetMouseButtonDown(0)) {
      Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
      RaycastHit hit;
      if (Physics.Raycast(ray, out hit)) {

        //Select stage
        if (hit.transform.name == "Sphere") {
          SceneManager.LoadScene("SceneOne");
        }
      }
    }
  }
}

Save the Program

 

Play the Application Click the sphere to SceneOne and Click the Cube to SceneTwo as You can see is navigating properly so this is the simple way you can tap or click on any gameobject

 

 

Summary

 

I hope you understood how to detect mouse click or touch on a GameObject Using C# Script in Unity.