Why is this giving me an error? (ToBuiltin problems)

Question

I'm not quite sure what's happening here. I'm getting the error "InvalidCastException: Cannot cast from source type to destination type." However, I can't see anything wrong. Here is the code:

var locX : float = 5; var locY : float = 5; var sizeX : int = 60; var sizeY : int = 40; var buttonText : String; var pieceToCreate : GameObject; var positionToSpawn : Vector3 = Vector3(-3,0,0);

// Save variables
var builtInSaveArrayX : int[];
var builtInSaveArrayY : int[];
var builtInSaveArrayZ : int[];
var isSaveButton : boolean = false;
private var saveItem : Transform;

function OnGUI () 
{
    // Declare Skin

 if (GUI.Button (Rect ( (Screen.width*(locX/10)) - (sizeX / 2), (Screen.height*(locY/10)), sizeX, sizeY), buttonText)) 
 {
     if(!isSaveButton)
         Instantiate(pieceToCreate, positionToSpawn, transform.rotation);
     else
         saveIt();
 }

function saveIt()
{
    var userObject : GameObject[] = GameObject.FindGameObjectsWithTag("moveable"); 
    var closest : GameObject; 
    var closestDist = Mathf.Infinity;

 var saveArrayX : Array = new Array();
 var saveArrayY : Array = new Array();
 var saveArrayZ : Array = new Array();

 var itemsOnScreen : int;

 for (saveItem in userObject) 
 { 
     itemsOnScreen++;
     //   Augment array and store pos. data  
     saveArrayX.length = itemsOnScreen-1;
     saveArrayY.length = itemsOnScreen-1;
     saveArrayZ.length = itemsOnScreen-1;

     saveArrayX[itemsOnScreen-1] = saveItem.transform.position.x;
     saveArrayY[itemsOnScreen-1] = saveItem.transform.position.y;
     saveArrayZ[itemsOnScreen-1] = saveItem.transform.position.z;
 }

 builtInSaveArrayX = saveArrayX.ToBuiltin(int);

//    builtInSaveArrayY = saveArrayY.ToBuiltin(int);
//    builtInSaveArrayZ = saveArrayZ.ToBuiltin(int);

 if (!PlayerPrefsX.SetIntArray("savedLevel1_xValues", builtInSaveArrayX))
 {
     Debug.Log("oops, the gameobject array saving failed terribly");
 }
 if (!PlayerPrefsX.SetIntArray("savedLevel1_yValues", builtInSaveArrayY))
 {
     Debug.Log("oops, the gameobject array saving failed terribly");
 }
 if (!PlayerPrefsX.SetIntArray("savedLevel1_zValues", builtInSaveArrayZ))
 {
     Debug.Log("oops, the gameobject array saving failed terribly");
 }

 Debug.Log("Total items " + itemsOnScreen + "   Size of array " + saveArrayX.length);    
 Debug.Log("Positions " + saveArrayX);

Answer 1

Best Answer

Answer by Jessy · Jan 13, 2011 at 01:46 PM

saveItem.transform.position.whatever is a float. (Vector3s are 3 floats.)

If your values are going to be floating-point representations of integers, you can convert each one to an int using parseInt(//float goes here), or one of these Mathf functions. Also, there's no reason to use Arrays anymore. Use Lists, and then you have ConvertAll available to you.

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karl_ · Jan 13, 2011 at 02:25 PM 0

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Did not know about lists. Thanks.

Why is this giving me an error? (ToBuiltin problems)

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