koobas.hobune.stream
Instantiating an object at click position
Hi. I am trying to spawn an object where I click down, but for some reason the object is being instantiated at a (seemingly) random location, every single time. There is a large cube that covers all of the viewable area, so I know the ray is hitting the collider...but what am I doing wrong? Also, is it possible to use ScreenPointToRay on a mobile platform, so I can port this script to iOS/Android (with some slight modifications, of course)? Thanks.
var Test : GameObject;
function Update () {
if (Input.GetButtonDown ("Fire1")) {
var ray : Ray = Camera.main.ScreenPointToRay (Input.mousePosition);
if (Physics.Raycast (ray)) {
Instantiate (Test, transform.position, transform.rotation);
}
}
}
You are setting the new object position and rotation to transform.position and transform.rotation, so it will be spawned where the object that creates the instance is located (instead of where the ray hits the collider).
You should use a RaycastHit to get the position where your ray hits the collider and use that position as the position for the new instance of the object. Check the examples here, look at the one with the raycasthit and the hit.point.
The problem is you are instantiating the new object at the position of the gameobject to which this script is attached.It should be spawned at the ray hitting position.Something like this will do.
var Test : GameObject;
function Update ()
{
if (Input.GetButtonDown ("Fire1"))
{
var ray = Camera.main.ScreenPointToRay(Input.mousePosition);
var hit : RaycastHit;
if (Physics.Raycast(ray, hit, 100.0))
{
Instantiate(Test,hit.point,Quaternion.identity);
}
}
}
Attach this script to your camera or an empty gameobject and assign the prafab.For this script to work there should be a collider in the background.The ray should hit a collider and the new object will be spawned at the ray hitting point.If your collider is too far,increase the ray length from 100 to a higher value.
Hope this helps....
