koobas.hobune.stream
How can i show a preview of a Prefab in the world before actually spawning it?
I am trying to create a skill where a player can spawn a GameObject in the world once a skill bar is filled. Before they spawn it, i want them to be able to see a preview of it and how it would look in the world, similar to the preview below.
I want to be able to show this object where the player is aiming. I'm ray casting from the camera to the centre of the screen and then getting the co-ordinates of the hit.point. I know how to Instantiate prefabs at that location, but don't know how to show a preview of it beforehand.
Any help would be appreciated as i'm new to Unity and these forums.
Hey,
Actually, the preview is an instantiated object itself. just make it follow the hit.point position, and when the player clicks, instantiate the real prefab and destroy the preview (there's a lot of possibilities, this is just one, but the 'preview' is an object like all the others).
Hope that helped :)
That helped, thanks!
However, i'm now having problems with the preview object itself. The object spawns at the hit point, but then does a weird thing where it seems to launch itself into the camera. Any ideas on the problem? I have tried to add a rigidbody but still having the same problem.
$$anonymous$$y code is here just in case i'm doing something wrong. I'm finding the object with tag as i don't know how to find a specific instance of a prefab, but i can figure that out later.
Vector3 rayOrigin = camera.ViewportToWorldPoint (new Vector3(0.5f, 0.5f, 0));
RaycastHit hit;
if (Physics.Raycast (rayOrigin, camera.transform.forward, out hit, range))
{
//Debug.Log (hit.point);
if (spawned == 0) {
Instantiate ($$anonymous$$inionNotSpawned, hit.point, Quaternion.identity);
spawned = 1;
}
}
if (spawned == 1)
{
Debug.Log ("1");
//GameObject.FindWithTag("$$anonymous$$inionNS").GetComponent<Rigidbody>().$$anonymous$$ovePosition (hit.point);
GameObject.FindWithTag("$$anonymous$$inionNS").transform.position = hit.point;
}
It's because the raycast collides with the preview object
Simply disable the preview's collider and it should be okay !
Anyway you still can optimize a bit more and store your instantiated preview in a variable ins$$anonymous$$d of looking for it at every frame
GameObject $$anonymous$$inionNS = null; /*(have to be outside the Update() )*/
Vector3 rayOrigin = camera.ViewportToWorldPoint (new Vector3(0.5f, 0.5f, 0));
RaycastHit hit;
if (Physics.Raycast (rayOrigin, camera.transform.forward, out hit, range))
{
//Debug.Log (hit.point);
if (spawned == 0) {
$$anonymous$$inionNS = Instantiate ($$anonymous$$inionNotSpawned, hit.point, Quaternion.identity);
spawned = 1;
}
}
if (spawned == 1)
{
Debug.Log ("1");
//GameObject.FindWithTag("$$anonymous$$inionNS").transform.position = hit.point;
$$anonymous$$inionNS.transform.position = hit.point;
}
