Transforming Objects Using C# Scripts In Unity

Introduction

This article demonstrates how to move objects using C# scripts in Unity.

Prerequisites

Unity Environment version 5.6.1

Create objects in Unity

Step 1

First, you have to open the Unity project. Create the terrain, trees, and water for your game.

Click on the "GameObject" menu in the menu bar. Select 3D objects and pick the "sphere" option. The sphere will be added to the scene View.

Drag and drop the red material. The color of the sphere will be changed into red.

Click on the Play button. The sphere will now appear in game View.

Create C# Script

Step 2

Right click on Assets. Select Create >> C# script.

Rename the script as move.

Move the Object

Step 3

Double click on the move script. The MonoDevelop-Unity editor will open up.

Move the object forward

Write the coding like the following,

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

public class move : MonoBehaviour {

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        transform.Translate (0.05f, 0f, 0f);

    }
}

Save the program.

Go back to the Unity window. Drag and drop the move script onto the sphere.

Click on the Play button. The sphere will move slowly in forward direction.

Object moves backward

Write the code like the following.

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

public class move : MonoBehaviour {

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        transform.Translate (-0.05f, 0f, 0f);

    }
}

Save the program.



The sphere will move in a backward direction.

Up

Write the following code.

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

public class move : MonoBehaviour {

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        transform.Translate (0.05f, 0.05f, 0f);

    }
}

Save the program. Go to Unity and click on the Play button. The sphere will move upward.

Down

Use the following code.

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

public class move : MonoBehaviour {

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        transform.Translate (0.05f, -0.05f, 0f);

    }
}

Save the program.

Left

Write the following code.

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

public class move : MonoBehaviour {

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        transform.Translate (0.00f, 0.00f, 0.05f);

    }
}

Save the program.

Object move up, forward and left

Write the coding like the following to mono development.

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

public class move : MonoBehaviour {

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        transform.Translate (0.001f, 0.01f, 0.01f);

    }
}

Save the program. Go to Unity and click on the Play button. The sphere will be moving slowly to the right.

Move the object by key press

Step 4

Write the code like the following.

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

public class move : MonoBehaviour {

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        if (Input.GetKey (KeyCode.W)) {
            transform.Translate (0.05f, 0f, 0f);
        }
        if (Input.GetKey (KeyCode.S)) {
            transform.Translate (-0.05f, 0f, 0f);
        }
        if (Input.GetKey (KeyCode.D)) {
            transform.Translate (0.0f, 0f, -0.05f);
        }
        if (Input.GetKey (KeyCode.A)) {
            transform.Translate (0.0f, 0f, 0.05f);
        }
    }

}

Save the program.

Go to Unity window. Click on the Play button. Press “W” key. The object will be moved to front.

Press “S” key. The object will be moving back.

Press “D” key. The object will move into the Right side.

Press “A” key. The object will move into the Left side.

Summary

I hope, you understood how to move the objects using C# scripts in Unity.