Hello,
I’m making a pong game for iPhone and I’m stuck at one point and in need of assistance! I want to drag the Player Object just by touching on IT, not anywhere else. I can move it by clicking anywhere on the screen, but that makes it impossible to implement 2-player game. I have 2 individual player sprites and I want them both can be controlled by dragging separately on the same scene.
Thank you!
Hi there, I made a game today myself using this script that is similar your pong game.
using UnityEngine;
using System.Collections;
//Class to control rackets via touch
public class TouchControl : MonoBehaviour
{
//Public Variables
public GameObject player1;
public GameObject player2;
//A modifier which affects the rackets speed
public float speed;
//Fraction defined by user that will limit the touch area
public int frac;
//Private Variables
private float fracScreenWidth;
private float widthMinusFrac;
private Vector2 touchCache;
private Vector3 player1Pos;
private Vector3 player2Pos;
private bool touched = false;
private int screenHeight;
private int screenWidth;
// Use this for initialization
void Start ()
{
//Cache called function variables
screenHeight = Screen.height;
screenWidth = Screen.width;
fracScreenWidth = screenWidth / frac;
widthMinusFrac = screenWidth - fracScreenWidth;
player1Pos = player1.transform.position;
player2Pos = player2.transform.position;
}
// Update is called once per frame
void Update ()
{
//If running game in editor
#if UNITY_EDITOR
//If mouse button 0 is down
if(Input.GetMouseButton(0))
{
//Cache mouse position
Vector2 mouseCache = Input.mousePosition;
//If mouse x position is less than or equal to a fraction of the screen width
if (mouseCache.x <= fracScreenWidth)
{
player1Pos = new Vector3(-7.5f, 0.5f, Mathf.Clamp(mouseCache.y / screenHeight * speed, 0, 8));
}
//If mouse x position is greater than or equal to a fraction of the screen width
if(mouseCache.x >= widthMinusFrac)
{
player2Pos = new Vector3(7.5f, 0.5f, Mathf.Clamp(mouseCache.y / screenHeight * speed, 0, 8));
}
//Set touched to true to allow transformation
touched = true;
}
#endif
//If a touch is detected
if (Input.touchCount >= 1)
{
//For each touch
foreach (Touch touch in Input.touches)
{
//Cache touch position
touchCache = touch.position;
//If touch x position is less than or equal to a fraction of the screen width
if (touchCache.x <= fracScreenWidth)
{
player1Pos = new Vector3(-7.5f, 0.5f, Mathf.Clamp(touchCache.y / screenHeight * 8, 0, 8));
}
//If mouse x position is greater than or equal to a fraction of the screen width
if(touchCache.x >= widthMinusFrac)
{
player2Pos = new Vector3(7.5f, 0.5f, Mathf.Clamp(touchCache.y / screenHeight * 8, 0, 8));
}
}
touched = true;
}
}
//FixedUpdate is called once per fixed time step
void FixedUpdate()
{
if (touched)
{
//Transform rackets
player1.transform.position = player1Pos;
player2.transform.position = player2Pos;
touched = false;
}
}
}
I’m currently using this script so I know it works. Let me know if you use it and run into issues
Here is one solution that uses the OnMouse*() callbacks. It will work ‘as is’ for mobile, but it is not the most efficient method.
http://answers.unity3d.com/questions/566327/drag-object-relative-to-camera.html
There are lots of posts with drag and drop scripts. Most use Raycasting and the mouse. It is pretty straightforward to convert from mouse to touch. You will find a mouse solution here:
http://answers.unity3d.com/questions/498396/how-to-click-and-drag-an-object-at-full-speed.html
I’ve recently made a tutorial on touch and drag objects on my blog that may help you for your purpose. link - Newtonians' Blog 3D: A Simple and Efficient Touch And Drag RigidBodies For Unity 3D (Beginner Friendly) - Part 1 I hope this was helpful.
@Exalia
Hello … I have some objects moving in a grid. I would be glad if you could help me how I need to write code to move these objects only left, right and forward on the phone.