Changing coordinates of the object with velocity preservation

Question

In Doodle jump, if a player jumps over one side of the screen he appears on another side with preserved velocity and other physical parameters.

I made two trigger colliders on the sides of the screen with OnTriggerEnter2D method.

private void OnTriggerEnter2D(Collider2D collision)
{
    collision.transform.position = new Vector3(collision.transform.position.x * -0.95f,
        collision.transform.position.y, collision.transform.position.z);
}

If I multiply collision.transform.position.x by -1f then on collision some glitching occurs. It gets stuck for a second. I believe this happens because when player is moved to the other side there is another collision detected and he is thrown back. Is there a more elegant way of handling this instead of multiplying by 0.95f?

---

Final solution:

[Tooltip("Controls where is the edge of the level where player is trasfered on the opposite side of the level.")]
[SerializeField]
private float xAxisMovementConstraints;

private void DetectBoundryCross()
{
    if (transform.position.x < (-xAxisMovementConstraints))
    {
        transform.position = new Vector2(transform.position.x + (xAxisMovementConstraints * 2f), 
            transform.position.y);
    }
    else if (transform.position.x > xAxisMovementConstraints)
    {
        transform.position = new Vector2(transform.position.x - xAxisMovementConstraints * 2f, 
            transform.position.y);
    }
}

Answer 1

I haven't tested this, but my approach would be to not use colliders for this at all.

A simple script should be all you need.

using UnityEngine;
using System.Collections;

public class SideWrap : MonoBehavior {
    public float left_boundary = -5.0f;
    public float right_boundary = 5.0f;

    void Update()
    {
        float newX = transform.position.x;
        if(transform.position.x < left_boundary){
            newX = transform.position.x + (right_boundary - left_boundary);
            transform.position = new Vector2( newX, transform.position.y );
        }
        else if(transform.position.x > right_boundary){
            newX = transform.position.x - left_boundary;
            transform.position = new Vector2( newX, transform.position.y );
        }
    }
}

Attaching this to the player object should give your desired result.