# Answers for "unity raycast 2d"

1

unity 2d raycast mouse

``````// detect object that was clicked using raycast

RaycastHit2D hit = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero);

if(hit.collider != null)
{
Debug.Log ("Target name: " + hit.collider.name);
}``````
Posted by: Guest on December-04-2020
9

unity raycast 2d

``````using UnityEngine;public class Example : MonoBehaviour
{
// Float a rigidbody object a set distance above a surface.    public float floatHeight;     // Desired floating height.
public float liftForce;       // Force to apply when lifting the rigidbody.
public float damping;         // Force reduction proportional to speed (reduces bouncing).    Rigidbody2D rb2D;
void Start()
{
rb2D = GetComponent<Rigidbody2D>();
}    void FixedUpdate()
{
// Cast a ray straight down.
RaycastHit2D hit = Physics2D.Raycast(transform.position, -Vector2.up);        // If it hits something...
if (hit.collider != null)
{
// Calculate the distance from the surface and the "error" relative
// to the floating height.
float distance = Mathf.Abs(hit.point.y - transform.position.y);
float heightError = floatHeight - distance;            // The force is proportional to the height error, but we remove a part of it
// according to the object's speed.
float force = liftForce * heightError - rb2D.velocity.y * damping;            // Apply the force to the rigidbody.
}
}
}``````
Posted by: Guest on April-21-2020
0

raycast 2d

``````using UnityEngine

public class ExampleClass : MonoBehaviour
{

void FixedUpdate()
{
RaycastHit2D hit;
if (Physics2D.Raycast2D(transform.position, transform.TransformDirection(Vector2.forward), out hit, 10))
{

Debug.Log(hit.gameobject);
}
else
{

Debug.Log("Did not Hit");
}
}
}``````
Posted by: Guest on August-22-2021
3

unity raycast 2d

``Physics2D.Raycast(Vector2 origin, Vector2 direction, float distance = Mathf.Infinity, int layerMask = DefaultRaycastLayers, float minDepth = -Mathf.Infinity, float maxDepth = Mathf.Infinity);``
Posted by: Guest on March-28-2020