[Solved]Make an explosive collider

Unity Engine
1

hey guy,

i wanna make an explosive…
np, i did it…but there’s a matter…
i want after collider hit some thing make that thing destroy…
i dunno if also there is any thing to make a mesh object separate… like it destroyed by an explosive… or simply remove it…

so i have a Grenade and explosive attach to it and call after 3 sec for one shot…
and last thing is an other mess object gonna to destroy…

thank you

2

If the target objects all have colliders then there is a very easy way to determine which ones are affected by the explosion. You can use Physics.OverlapSphere to return an array of all colliders within a given radius of a point. You can then call Destroy on all the colliders’ gameObjects:-

var cols = Physics.OverlapSphere(expPosition, expRadius);

for (i = 0; i < cols.Length; i++) {
   Destroy(cols[i].gameObject;
}

There isn’t any built-in way to simulate the explosion damage to the meshes. You can code this yourself, but be warned that this type of thing tends to be complicated.

3

Just a suggestion, but you can also put tags on non-destructable/killable objects and just add a simple if statement to check if it has the tag or not.

var cols = Physics.OverlapSphere(expPosition, expRadius);

for (i = 0; i < cols.Length; i++) 
{
   if(cols[i].transform.tag != "indestructable")
   {
      Destroy(cols[i].gameObject;
   }
}

Though, it may be gameObject instead of transform though

4

i also like to deform them…like first explosion make some dis-sort on mesh object shape and after several of that…

for example unreal engine provide crate that you just need to fire at them, and they just get desort … not remove from scene…

BTW, tnx to you…
sry for late… i’m in middle of term exam

5

seem there’s no way in unity ? right?

6

It say there’s nothing such “range” as cols member…
What should i use to detect the distance?

private var creationTime=Time.time;
var LifeTime=3;
var DoDamageRange :int[] =new int[5];
var DoDamagePower :int[] =new int[5];

var explosionPrefab:Transform;

function Awake () 
{
	creationTime=Time.time;
}

function Update()
{
	if(Time.time>creationTime+LifeTime)
	{
		Destroy(gameObject);
		
		Instantiate(explosionPrefab,transform.position,Quaternion.identity);
		//destroy around obj
		var cols = Physics.OverlapSphere(transform.position, DoDamageRange[0]);
		for (i = 0; i < cols.Length; i++) 
		{
			if (cols[i].gameObject.tag=="turret")
			{
				GameObject.Find("GUI Text").guiText.text=""+ cols[i].gameObject.GetComponent("turretHealthController").TURRET_HEALTH;
				if (cols[i].range < DoDamageRange[0])
				{
					cols[i].gameObject.GetComponent("turretHealthController").TURRET_HEALTH -= DoDamagePower[0];//Destroy(cols[i].gameObject);
				}
				else
				{
					if (cols[i].range < DoDamageRange[1])
					{
						cols[i].gameObject.GetComponent("turretHealthController").TURRET_HEALTH -= DoDamagePower[1];//Destroy(cols[i].gameObject);
					}
					else
					{
						if (cols[i].range < DoDamageRange[2])
						{
							cols[i].gameObject.GetComponent("turretHealthController").TURRET_HEALTH -= DoDamagePower[2];//Destroy(cols[i].gameObject);
						}
						else
						{
							if (cols[i].range < DoDamageRange[3])
							{
								cols[i].gameObject.GetComponent("turretHealthController").TURRET_HEALTH -= DoDamagePower[3];//Destroy(cols[i].gameObject);
							}
							else
							{
								if (cols[i].range < DoDamageRange[4])
								{
									cols[i].gameObject.GetComponent("turretHealthController").TURRET_HEALTH -= DoDamagePower[4];//Destroy(cols[i].gameObject);
								}
								else
								{
									//No Damage
								}
							}
						}
					}
				}
			}
		}
	}
}
7

Are you sure you need to check the range directly? (It seems as though the OverlapSphere call already does this.) If you do, you can use Vector3.Distance:-

range = Vector3.Distance(transform.position, cols[i].transform.position);
8

tnx