Mobile Touch Controls - Moving A Character From Left To Right Using C# Scripts In Unity

Introduction

 

In this article, we discuss how to make mobile touch controls and move a character from left to right using C# scripts in Unity.

 

Prerequisites

 

Unity Environment version 2018.4.19f1 

 

Create the 2D project in Unity.

 

 

Now open up main.Assets. Import the 2D Character for the Unity. Drag the Scene view onto your view controller.

 

 

Select 2D Character and go to the Drag n Drop Scene view in Unity.

 

 

Create a Button in your project.

 

Click on the "GameObject" menu in the menu bar. Select Create UI (Button). The Create Button will be added to the scene View.

 

 

Rename the Button as Left button.

 

 

Create a DuplicateButton in your project.

 

Select the button and type the keys (Ctrl + D). The Create Duplicate Button will be added to the scene View.

 

 

Rename the Duplicate Button as the Right button.

 

 

Create a C# Script

 

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

 

 

Rename the script as Movement.

 

 

Write the code like the following.

 

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

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Movement: MonoBehaviour {
    //variables
    public float moveSpeed = 300;
    public GameObject character;
    private Rigidbody2D characterBody;
    private float ScreenWidth;
    // Use this for initialization
    void Start() {
        ScreenWidth = Screen.width;
        characterBody = character.GetComponent < Rigidbody2D > ();
    }
    // Update is called once per frame
    void Update() {
        int i = 0;
        //loop over every touch found
        while (i < Input.touchCount) {
            if (Input.GetTouch(i).position.x > ScreenWidth / 2) {
                //move right
                RunCharacter(1.0 f);
            }
            if (Input.GetTouch(i).position.x < ScreenWidth / 2) {
                //move left
                RunCharacter(-1.0 f);
            }
            ++i;
        }
    }
    void FixedUpdate() {
        #if UNITY_EDITOR
        RunCharacter(Input.GetAxis("Horizontal"));
        #endif
    }
    private void RunCharacter(float horizontalInput) {
        //move player
        characterBody.AddForce(new Vector2(horizontalInput * moveSpeed * Time.deltaTime, 0));
    }
}

Save the Program.

 

Go back to the Unity window. Drag and drop the movement script onto the MainCamera.

 

 

Drag and drop the 2D character onto the Movement script.

 

 

Click on the Play button. Press the “Left touch ” and “Left Arrow ” key. The 2D character will move to the Left side.

 

 

Click on the Play button. Press the “Right touch ” and “Right Arrow ” key. The 2D character will move to the Right side.

 

 

Summary

 

I hope you understood how to make mobile touch controls and move a character from left to right using C# scripts in Unity.