Wrong Screen size

Hi. I have problem with new object in scene. Im setting it position, local, normal any type. I set x and y position on Screen.width and Screen.heigth. Problem is when I instatiate this objects in another resolutions. Once is over the screen, another time is on the half of screen I dont understand how it works. I want have object in the same point in any resolution.

Code (CSharp):

1. flameFloor.transform.position = new Vector3(Screen.width, Screen.height, flameFloor.transform.position.z);
2.         Instantiate(flameFloor);

Game is in 2D

 

The key is Camera.ScreenToWorldPoint
http://docs.unity3d.com/ScriptReference/Camera.ScreenToWorldPoint.html

Since the value of the resolution changes, you will need to normalize your screen position and deal in percentages not pixels.

Here is a functional Demo:

Code (CSharp):

1. public class Example : MonoBehaviour {
2.  
3.     public GameObject yourPrefab;
4.  
5.     [Range(0.0f,1.0f)]
6.     public float xPercentageOfScreen;
7.  
8.     [Range(0.0f,1.0f)]
9.     public float yPercentageOfScreen;
10.  
11.     public float distanceFromTheMainCamera;
12.  
13.     void Update(){
14.         if(Input.GetKey("i")){
15.             InstantiateGOAtPoint();
16.         }
17.     }
18.  
19.     void InstantiateGOAtPoint(){
20.         if(yourPrefab != null){
21.             Instantiate(yourPrefab,PositionOfInstantiateGameObject(),Quaternion.identity);
22.         }
23.     }
24.  
25.     Vector3 PositionOfInstantiateGameObject () {
26.         float xConvertedToCurrentResolution = xPercentageOfScreen * Screen.width;
27.         float yConvertedToCurrentResolution = yPercentageOfScreen * Screen.height;
28.  
29.         Vector3 screenCoordinates = new Vector3(xConvertedToCurrentResolution,yConvertedToCurrentResolution,distanceFromTheMainCamera);
30.         return Camera.main.ScreenToWorldPoint(screenCoordinates);  
31.     }
32. }

Note that (0,0) is in the bottom left corner of the screen and (1,1) is in the top right.

Hope that helps!

 

Great thank, now works great!