Hi!
I want make a 2d side scrolling, where you’re flying to the right side direction (camera focused on the Game Object) and you can switch / flip that object to under floor/ ground line (with changing gravity of course). But I have a little struggle with making that correctly…
Im trying use Raycast2D which shoots the ray to the down (Vector2.down / -Vector2.up) and hitting the ground line. Than I get the hit.point of that raycast as a Vector2. I have also the startPoint which is just a gameObject.transform.position (beggining point of a raycast). So I made a statement - If Object get switched, set his position y to: gameObject.transform.position - newPos (new Pos is just a = startPoint - hit.point , → its the distance) but it doesn’t work 
… Mostly the gameObject spawns in the center point of the screen…
This is my code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class BikeControl : MonoBehaviour
{
public bool Positive_Reality;
Vector2 endCast;
Vector2 startCast;
Vector2 newPos;
void Start()
{
Positive_Reality = true;
}
void Update()
{
if (Input.GetKeyDown(KeyCode.Space))
{
if (Positive_Reality) FlipBicycleDown();
else FlipBicycleUp();
Positive_Reality = !Positive_Reality;
}
}
private void FixedUpdate()
{
RaycastHit2D hit = Physics2D.Raycast(transform.position, Vector2.down);
startCast = transform.position;
endCast = hit.point;
newPos = startCast - endCast;
Debug.Log("startCast" + transform.position);
Debug.Log("endCast" + hit.point);
Debug.DrawLine(transform.position, hit.point, Color.red);
}
void FlipBicycleDown()
{
gameObject.transform.position = new Vector2(0.0f, transform.position.y - newPos.y);
gameObject.transform.eulerAngles = new Vector3(-180, 0.0f, 0.0f);
gameObject.GetComponent<Rigidbody2D>().gravityScale = -30;
}
void FlipBicycleUp()
{
gameObject.transform.eulerAngles = new Vector3(0, 0.0f, 0.0f);
gameObject.GetComponent<Rigidbody2D>().gravityScale = 30;
}
}