Raycasting to make Buildings Clickable

Questions & Answers
1

I have a problem.

I used this code which I found somewhere here in the forums…it’s a raycasting method for clicking objects.

`
script ExecuteInEditMode

var gSkin : GUISkin;
var backdrop : Texture2D;
var target1: Transform;
var target2: Transform;
private var isLoading = false;

function OnGUI()
{
 if (gSkin)
  GUI.skin  = gSkin;
 else
  Debug.Log("StartMenuGUI: GUI Skin object missing!");
 

var backgroundStyle : GUIStyle = new GUIStyle();
backgroundStyle.normal.background = backdrop;

GUI.Label(Rect((Screen.width - (Screen.height *2)) *0.75,0,Screen.height *2,
Screen.height ),"",backgroundStyle);


//Loading Screen
if (isLoading)
  Application .LoadLevel("Rotating Arch");
}
function Update () {
	if (Input.GetMouseButton(0)) {
		var ray: Ray = Camera.main.ScreenPointToRay(Input.mousePosition);
		var hit: RaycastHit;
		
		if (Physics.Raycast(ray, hit)) {
			if (hit.transform == target1) {
				print("Hit target 1");
				isLoading = true;
			
			} else if (hit.transform == target2) {
				print("Hit target 2");
			}
		} else {
			print("Hit nothing");
		}
	}
}`

Anyway…

This works fine for those buildings that have single meshes.
But sometimes when the model has multiple meshes…I choose the one that covers all parts of the model(that’s where I put my collider) then test if it will take a “hit”.

Apparently…it does not work.

NOTE: in the code sample there are 2 targets only. Because I test the buildings 1 by 1 first to know if I put the colliders in the right mesh.
But in the long run…once I have all colliders in the right place I will have multiple targets.

The goal is to make each building “clickable” so that when it is “hit” it will go to a scene where it’s details are shown.

The problem is that Multiple Meshed models seem to not work for this code.
:frowning: I need to fix this asap for this is part of my thesis XD

Did I do something wrong?
Is there any other alternative for this kind of thing?

ANOTHER NOTE: I attach the above script to an FPS Controller. This is part of a “Free Roam” function of my thesis. More of a digital tour of a place :slight_smile:

2

are you familiar with the physics “layers” system in Unity3D ?

in may situations like this you’d simply make a set of separate colliders (likely simple boxes) for the use of the “click on a building” system.