How do you make a game object appear were the cursor is

Question

In my game I want it so the player can place blocks for the puzzle to be completed. I tried to just use the Instaniate and then the game object but that didn't work since I needed to specify a position.I want it so the cursor would be in the spot and when they click the object will appear.

Answer 1

Best Answer

Answer by karl_jones · Nov 15, 2016 at 10:58 AM

You can use a Raycast to get the position providing there is a collider under the cursor. https://docs.unity3d.com/ScriptReference/Physics.Raycast.html

 using UnityEngine;
 using System.Collections;
 
 public class ExampleClass : MonoBehaviour {
     public GameObject particle;
     void Update() {
         if (Input.GetButtonDown("Fire1")) {
             Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
             if (Physics.Raycast(ray))
                 Instantiate(particle, transform.position, transform.rotation);
         }
     }
 }

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Answer 2

Answer by d-ostapa · Nov 16, 2016 at 07:30 AM

What do you mean by "There is a collider Under the cursor? " @karl_jones I tried to use it but it didn't work so I think its something to do with the collider you are talking about. I just don't know how to apply a collider to a cursor.

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Answer 3

Answer by roman_sedition · Nov 16, 2016 at 02:36 PM

You can instantiate the object at specified length from the ray.

This code will instantiate the object on the screen where the mouse is, but at a z axis coordinate equal to the absolute distance the camera is from zero. i.e it will have a z coordinate of zero.

 Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
             
 
             Vector3 position = (ray.origin + ray.direction * Mathf.Abs(Camera.main.transform.position.z));
 
             
             GameObject yourObject = Instantiate (thePuzzlePiece);
 
             yourObject.transform.position = position;

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How do you make a game object appear were the cursor is

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