Randomly add Rigidbodies to objects.

Unity Engine
1

I was wondering how to write a script to accomplish this goal. I have about twenty objects in my scene and I want a object (with the script applied to it) to randomly add rigidbodies to these objects, and randomly within a specified time range. For example the object would add a rigidbody some random time within 0-3 seconds to one of the specified objects. Not sure how to do this. I’m sure I could get there eventually, but the script would probably be unnecessarily long and with less control. Thanks for any help!

–CgRobot

2

That kind of script wouldnt be hard. It depends if these are runtime object or not. Either way, you would start with a list of objects. then simply add the rigidbody statement.

// use an array for some neat functions..
var objects : Array=new Array();

// at this point, the user could load the object array or you could do it via code.

for(var i =0; i< 20; i++){
objects.add(GameObject.CreatePrimitive(PrimitiveType.Cube).transform);
var newPosition : Vector2 = Random.insideUnitCircle * 25;
objects[i].position.x = newPosition.x;
objects[i].position.z = newPosition.y;
}

//Random Drop...
var n : int = Random.value * objects.length;
objects[n].gameObject.AddComponent(Rigidbody); // make it fall
objects.RemoveAt(n); // remove it from the list so we dont have it to drop again.
}
3

I don’t think this is what I meant. Imagine twenty tiles in the scene. We’ll just say that on function Start() the tiles start to fall one by one over the time of about three seconds (kinda like a disintegrating effect). The tiles are already in the scene so I don’t need to add any other objects. See the images below:

508754--18082--$Tiles_01.png
508754--18082--$Tiles_01.png714×402 135 KB
508754--18084--$Tiles_02.png 508754--18083--$Tiles_03.png

All of the tiles would fall over the period of three seconds. Sorry about any confusion.

4

erm… I think what i had was rathr open ended to that. You can either fill the array yourself, or let Unity do it in the Start() function…

Speaking of the Start() function. it is a function that only happens at the beginning. You will need to add some code to make things drop randomly during the Update function.

coupled with my previous entry…

var timeToNextDrop = 3.0; // start after 3 seconds..

function Update(){
if(Time.time < timeToNextDrop) return; // if we are not ready to drop one, just quit
// using the array from the previous post...

//Random Drop...
var n : int = Random.value * objects.length;
objects[n].gameObject.AddComponent(Rigidbody); // make it fall
objects.RemoveAt(n); // remove it from the list so we dont have it to drop again.

// update timeToNextDrop to add 2-3 seconds onto the timer
timeToNextDrop = Time.time + Random.Range(2.0, 3.0);

}
5

Ah! Thank you so much! It works beautifully! Sorry I got a little confused there for a while but I understand it now. :slight_smile: