How To Find Child Object and set is own criteria??

Question

I m working On 2d game...

i create a empty gameobject and store a multiple child object

i applid a different different tag on child game object but chile tag was not found???

Referance:

Game Object: ObstacleScript.cs

alt text

Obstacle Object :

alt text

MoveFast Object Image :

https://imgur.com/1pgChbV

Vertical Rotate Object Image :

https://imgur.com/a/jRD1rS5

Code:

Obstacle.cs // Put Script On GameObject

    void Update()
     {
         goTopToDown();
     }
 
     void goTopToDown()
     {
             //transform.position += Vector3.down * speed * Time.deltaTime;  

               //find with tag and move top to down object   ex: 8 object should be slow move top to down
             if(gameObject.tag== "obstacleobject")                     
             { 
                 transform.position += Vector3.down * speed * Time.deltaTime;            
                 Debug.Log("GameObject Name:" + gameObject.tag);
                 Debug.Log("inside vertical object");
             }

             //find with tag and Vertical Rotate object           //ex:  1 game  object should be rotate left to right
             if (gameObject.tag == "verticalrotateobject")  
             {
                 transform.Rotate(Vector3.forward, turnSpeed * rotatesped * Time.deltaTime);    
                 transform.position += Vector3.down  * speed * Time.deltaTime;                       //move top to down
                 Debug.Log("GameObject Name:" + gameObject.tag);
                 Debug.Log("inside vertical object");
             }

              //find with tag and move fast object        ex: 2 object is speed is very fast
             if (gameObject.tag == "movefastobject") 
             {
                 transform.position += Vector3.down * movefastobjectspeed * Time.deltaTime
                 Debug.Log("GameObject Name:" + gameObject.tag);
                 Debug.Log("inside movefast object");
             }
  }

  

   void OnTriggerEnter2D(Collider2D other)  // i want to when three tag  gameobject collided with my player then trigger fire
     {
             foreach (Transform child in transform)                      
             {
                 if (child.tag == "obstacleobject" || child.tag == "movefastobject" || child.tag == "verticalrotateobject") 
                 {
                     Debug.Log("chiildtag:" + child.tag);
                     gameovertext.SetActive(true);
                      
                     StartCoroutine(gameover());
                     Debug.Log("inside triggerfire");
                 }
         }

But issue is i not found my child tag???

Answer 1

Answer by Vega4Life · Aug 02, 2019 at 02:28 PM

You are just checking if the parent object has the tag. Instead, you need to cycle through all the parents children and see if they have the tag. Something like this:

     private void goTopToDown()
     {
         foreach(Transform trans in transform)
         {
             if (trans.tag == "obstacleobject")
             {
 
             }
             else if (trans.tag == "verticalrotateobject")
             {
 
             }
             else if (trans.tag == "movefastobject")
             {
 
             }
         }
     }

Add comment · Share

Answer 2

Answer by Yonal · Aug 02, 2019 at 02:27 PM

i made some modifications to your code try this

 void Update()
 {
     goTopToDown();
 }
 
 void goTopToDown()
 {
     //transform.position += Vector3.down * speed * Time.deltaTime;  
     //find with tag and move top to down object   ex: 8 object should be slow move top to down
     foreach (GameObject item in GetComponentsInChildren<GameObject>())
     {
         if (item.tag == "obstacleobject")
         {
             transform.position += Vector3.down * speed * Time.deltaTime;
             Debug.Log("GameObject Name:" + gameObject.tag);
             Debug.Log("inside vertical object");
         }
         //find with tag and Vertical Rotate object           //ex:  1 game  object should be rotate left to right
         if (item.tag == "verticalrotateobject")
         {
             transform.Rotate(Vector3.forward, turnSpeed * rotatesped * Time.deltaTime);
             transform.position += Vector3.down * speed * Time.deltaTime;                       //move top to down
             Debug.Log("GameObject Name:" + gameObject.tag);
             Debug.Log("inside vertical object");
         }
         //find with tag and move fast object        ex: 2 object is speed is very fast
         if (item.tag == "movefastobject")
         {
             transform.position += Vector3.down * movefastobjectspeed * Time.deltaTime
 
 
                  Debug.Log("GameObject Name:" + gameObject.tag);
             Debug.Log("inside movefast object");
         }
     }
 }
 
 void OnTriggerEnter2D(Collider2D other)  // i want to when three tag  gameobject collided with my player then trigger fire
 {
     foreach (Transform child in GetComponentsInChildren<Transform>())
     {
         if (child.tag == "obstacleobject" || child.tag == "movefastobject" || child.tag == "verticalrotateobject")
         {
             Debug.Log("chiildtag:" + child.tag);
             gameovertext.SetActive(true);
 
             StartCoroutine(gameover());
             Debug.Log("inside triggerfire");
         }
     }
 
 }

Add comment · Show 3 · Share

satish004004 · Aug 02, 2019 at 05:43 PM 0

Share

@yonal try this code but its give an error??? alt text

i dont know what i m missing??

error.png (97.5 kB)

Bunny83 · Aug 03, 2019 at 02:22 PM 0

Share

This doesn't make sense and can't work:

 GetComponentsInChildren<GameObject>())

The GameObject class is not a component. You could use the Transform component, however keep in $$anonymous$$d that GetComponentsInChildren will also get all nested objects as well, no matter how deep.

satish004004 Bunny83 · Aug 03, 2019 at 02:35 PM 0

Share

@Bunny83 thanks for your valueable suggastion i appriciate it but still my issue not solved??

i m facing this problem still

i m trying

  foreach (Transform item in GetComponentsInChildren<Transform>())   // i put this script parent object and parent is an empty game object parent have a rigidbody2d and child gameobject have static trigger collider 
   {
  
     }

see referance : https://imgur.com/a/ozcJcO4

child gameobject not work as its own condition?? isssue iss herreeee

Answer 3

try this

  void Update()
  {
      goTopToDown();
  }
  
  void goTopToDown()
  {
      //transform.position += Vector3.down * speed * Time.deltaTime;  
      //find with tag and move top to down object   ex: 8 object should be slow move top to down
      foreach (Transform item in GetComponentsInChildren<Transform>())
      {
          if (item.tag == "obstacleobject")
          {
              transform.position += Vector3.down * speed * Time.deltaTime;
              Debug.Log("GameObject Name:" + gameObject.tag);
              Debug.Log("inside vertical object");
          }
          //find with tag and Vertical Rotate object           //ex:  1 game  object should be rotate left to right
          if (item.tag == "verticalrotateobject")
          {
              transform.Rotate(Vector3.forward, turnSpeed * rotatesped * Time.deltaTime);
              transform.position += Vector3.down * speed * Time.deltaTime;                       //move top to down
              Debug.Log("GameObject Name:" + gameObject.tag);
              Debug.Log("inside vertical object");
          }
          //find with tag and move fast object        ex: 2 object is speed is very fast
          if (item.tag == "movefastobject")
          {
              transform.position += Vector3.down * movefastobjectspeed * Time.deltaTime
  
  
                   Debug.Log("GameObject Name:" + gameObject.tag);
              Debug.Log("inside movefast object");
          }
      }
  }
  
  void OnTriggerEnter2D(Collider2D other)  // i want to when three tag  gameobject collided with my player then trigger fire
  {
      foreach (Transform child in GetComponentsInChildren<Transform>())
      {
          if (child.tag == "obstacleobject" || child.tag == "movefastobject" || child.tag == "verticalrotateobject")
          {
              Debug.Log("chiildtag:" + child.tag);
              gameovertext.SetActive(true);
  
              StartCoroutine(gameover());
              Debug.Log("inside triggerfire");
          }
      }
  
  }

How To Find Child Object and set is own criteria??

3 Replies

Your answer

Follow this Question

Related Questions