make sure there is no overlap when re-enabling objects

Question

I am disabling objects when shot, but the problem is I don't know how to check if there's something is in the way (player or enemies etc) when re-enabling the objects. Right now the objects get re-enabled even if the player is in the way and that's causing issues. Here's my code:

 public class BreakingBlocks : MonoBehaviour
 {
     public float DestroyTimer = 0F;     /// Wait time before destoying
     public float RespawnTimer = 1.5F;   /// wait time before respawning
     public bool DisableRespawning = false; /// Disable respawning
 
     void OnTriggerEnter2D(Collider2D collider)
     {
         if (collider.gameObject.tag == "BreakBlocks")
         {
             Invoke("RandomCube", DestroyTimer);
         }
     }
     void RandomCube()
     {
         gameObject.SetActive(false);
         if (DisableRespawning)
         {
             return;
         }
            Invoke("SpawnCube", RespawnTimer);
     }
     void SpawnCube() // re-enable objects
     {
         gameObject.SetActive(true);
     }

Answer 1

Answer by dan_wipf · Mar 31, 2019 at 04:28 PM

i’d change the gameobjects tag before disabling, then on setactive you first check if the collider intersects with anything, like player or what ever you dont want to be overlapping with. => for example a bunch of grass is ok to be overlapped with, but not a player/enemy so after you setactive(true) you can check with this:

 GameObject[] AllCharacters;
 bool intersects = false;
 var bb = GetComponent<Collider>().bounds; 
 
 for(int i = 0; i<AllCharacters.Length;i++){
   if(bb.Intersects(AllCharacters[i].GetComponent<Collider>().bounds)){
     intersects = true;
     return;
     }
 }
 
 if(intersects){
   //do something
   intersects = false;
 }
 
 // Second Solution
 
 void OnCollisionStay/OnTriggerStay(Collision / Collider col){
   if(col.transform.tag == "Player" || col.transform.tag == "Enemy"){
     //do something
     }
 }

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Legionghost · Mar 31, 2019 at 11:17 PM 0

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Getting issues: GameObject[] does not contain a definition for 'GetComponent' and no accessible extension method 'GetComponent' accepting a first argument of type GameObject[] could be found (are you missing a using directive or an assembly reference?) I did change Collider to Collider2D.

dan_wipf Legionghost · Apr 01, 2019 at 03:49 AM 0

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my bad should be AllCharacters[i].GetComponent...

but anyway it’s pseudo code, just to get you an idea

Legionghost · Apr 01, 2019 at 04:55 AM 0

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ok thanks, I'm new so I haven't used arrays before but this helps.

dan_wipf Legionghost · Apr 01, 2019 at 05:39 AM 0

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just keep asking, if anything is unclear => i’d say the first method can be a heavy method of comparing BB’s against each other, like if you have hundreds of enemys!

if you wan’t to add all enemys to a Array do this => add a tag to the enemy => “enemy”

if the enemys’ are not spawning through the game you can add this to the Start method, elses you need to catch all enemys before checking the place.

 AllCharacters = GameObject.FindGameObjectsWithTag("enemys");

working with multiple types of gameobjects, you’re better of with List where you can enter code hereeasily add Ranges, like this:

 AllCharacters.AddRange(GameObject.FindGameObjectsWithTag("enemys"));
 //or single Objects
 AllCharacters.Add(GameObject.FindGameObjectsWithTag("Player"));

make sure there is no overlap when re-enabling objects

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