Detecting RayCast on moving object?

Questions & Answers
1

i have searched alot but could not find any refernce across internet. my case is gameobjects are spawning from the top of screen and translating downwords. each gameObject has trigger and a script that translating it. player have to tap on each object to destroy that specific gameobject. i am using raycasting to detect touch on each object. everything working if speed is normal. when object starts to come fast . the gameobject start ignoring touch. any solution for this?
i have to scripts one attach to camera that manage raycasting and other translating tile

Script attached to camera

using UnityEngine;
using System.Collections;

public class RaycastManager: MonoBehaviour {
	Touch touch;
	public bool stopTime=true;
	public float delay,timer;
	// Use this for initialization
	void Start () {
		timer = delay;
	}
	void Awake()
	{
		MoveTile.speed = 7f;
	}
	// Update is called once per frame
	void FixedUpdate () 
	{
		if (Input.touchCount >0) {
			//MoveTile.speed = 0f;
			touch = Input.GetTouch (0);
			RaycastHit2D hit = Physics2D.Raycast (Camera.main.ScreenToWorldPoint ((touch.position)), Vector2.zero);
			if (hit.collider.tag == "Pink") {
				Destroy (hit.transform.gameObject);
			} else if (hit.collider.tag == "Green") {
				Destroy (hit.transform.gameObject);
			} else if (hit.collider.tag == "Blue") {
				Destroy (hit.transform.gameObject);
			} else if (hit.collider.tag == "SeaGreen") {
				Destroy (hit.transform.gameObject);
			} else if (hit.collider.tag == "Purple") {
				Destroy (hit.transform.gameObject);
			} else if (hit.collider.tag == "Orange") {
				Destroy (hit.transform.gameObject);
			} 
		}
	}
	

}

Script attached to each gameobject

using UnityEngine;
using System.Collections;

public class MoveTile : MonoBehaviour {
	public float speed;
	// Use this for initialization
	public void pointerDown () 
	{
		speed = 0;
		gameObject.SetActive (false);
	}
	
	// Update is called once per frame
	void Update () {
		transform.Translate (speed  * Vector2.down*Time.deltaTime);

		}

}
2

Since you are translating your objects in Update() (instead of FixedUpdate()) then in high speeds the raycast check point might miss the actual object since Update() might be called several times between two sequential calls to FixedUpdate(). So while you check the input and raycast in FixedUpdate the object might already been translated.

Check this 1 about the differences regarding being in sync with the physics engine.

Try translating your objects in a FixedUpdate() method instead of in Update()

Also do raycasting checks in Update() method as FixedUpdate() is executed in fixed intervals while Update() is called per frame (which on higher fps is more frequent the FixedUpdate()).

3

I find solution of this problem after a week of struggle. if someone need solution can contact me.

4

Use OnMouseDown()

OnMouseDown reference