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Question by kityanlam3 · May 06, 2016 at 11:20 AM · c#booleaninstantiate prefabonce

Instantiating once in an update

I have seen a lot of examples using a boolean to only instantiate once in update and I have followed the examples but it's not working for me. I'm probably missing something here, please help me find it.

 using UnityEngine;
 using System.Collections;
 
 public class FurnitureManagerScript : MonoBehaviour
 {
     public GameObject gameobjecttoplace;
     public RaycastHit hit;
     public bool click;
     // Use this for initialization
     void Start()
     {
         click = false;
     }
 
     // Update is called once per frame
     void Update()
     {
         if (Input.GetMouseButton(0) && click==false && gameobjecttoplace!=null)
         {
             Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
             Physics.Raycast(ray, out hit);
             click = true;
             spawnatclick();
             }
         
     }
     void spawnatclick()
     {
         if (click == true && hit.transform.tag == "BuildableArea")
         {
             click = false;
             Instantiate(gameobjecttoplace, Camera.main.ScreenToWorldPoint(Input.mousePosition), Quaternion.identity);
 
             Debug.Log(click);
         }
     }
 }

I am trying to let the player select a button which stores what gameobject the player wants to place in an area and then instantiate it once. However, right now it is spawning based on frame rate so I'm getting like a lot of gameobjects.

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Answer by meat5000 · May 06, 2016 at 11:20 AM

Use

 Input.GetMouseButtonDown(0) //You only want 1 click!

Use

 hit.point //Spawn at the Raycasted position instead of at the camera


  using UnityEngine;
  using System.Collections;
  
  public class FurnitureManagerScript : MonoBehaviour
  {
      public GameObject gameobjecttoplace;
      public RaycastHit hit;
      public bool click;
      
      void Start()
      {
         click = false;
      }
  
      void Update()
      {
         if (Input.GetMouseButtonDown(0) && click==false && gameobjecttoplace!=null)
         {
              Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
              Physics.Raycast(ray, out hit);
              click = true;
              spawnatclick();
         }
      }
      void spawnatclick()
      {
          if (click == true && hit.transform.tag == "BuildableArea")
          {
              click = false;
              Instantiate(gameobjecttoplace, hit.point, Quaternion.identity);
          }
      }
  }
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avatar image meat5000 ♦ · May 06, 2016 at 11:27 AM 0
Share

Also, when writing your scripts use the tab key to do your spacing ins$$anonymous$$d of adding whitespace with spacebar.

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