How to check for the nearest gameObject in OverLapCircleAll?

Questions & Answers
1

Hi, I am making a top down 2d roguelike game. I have made pickup gameObjects for weapons. They spawn weapons as the children of the player. This function is doing stuff.

public void SpawnWeapon()
    {
        GameObject player = GameObject.FindGameObjectWithTag("Player");
        Instantiate(weaponPrefab, weaponAttachment.position, weaponAttachment.rotation, player.transform);
        Destroy(gameObject);
    }

It Instantiates the weapon prefab under player. To call this function, the player has OverLapCircleAll which checks for all game objects in weapon pickup layer and then call their SpawnWeapon() function.

Collider2D[] isNearWeapon = Physics2D.OverlapCircleAll(gameObject.transform.position, findRange, weaponPickupLayer);
            for (int i = 0; i < isNearWeapon.Length; i++)
            {
                isNearWeapon*.GetComponent<WeaponPickup>().SpawnWeapon();*

}
The problem is that if there are two different weapon pickups laying near each other, then the OverLapCircleAll spawn both of them. So i want to spawn the one which is the nearer and the spawning of one weapon inhibits the spawning of other. One approach I took is to make a bool which check if the player has one weapon equipped. But it doesn’t work when two pickups are both entering the OverLapCircleAll together and both weapons are spawned. But I want to spawn the nearest one and not other one.

2

This may not be the most efficient way but it definitely works:

Collider2D[] isNearWeapon = Physics2D.OverlapCircleAll(gameObject.transform.position, findRange, weaponPickupLayer);

// Set to first found
Collider2D nearestWeapon = null;
float shortestDistance = Mathf.infinity;

for (int i = 0; i < isNearWeapon.Length; i++)
{
     if (Vector3.Distance(transform.position, isNearWeapon*.transform.position) < shortestDistance)*

{
shortestDistance = newDist;
nearestWeapon = isNearWeapon*;*
}
}

if (nearestWeapon != null)
nearestWeapon.GetComponent().SpawnWeapon()
The Reason it may not be the most efficient is because if there are lots of these around you it does a distance check with each one.
Note: This should almost never be noticeable in GamePlay