This is a radar script, originally made by dasterdlybanana and psychic parrot, that I've been trying to adapt to my game. Their original script works by displaying static objects on their radar screen but the blips move as their character does. It can have two blips. One if the enemy is chasing and one if the enemy is not. I want to use this same concept but have a different blip for each different shape (the shapes move around as well). This displays the background of my radar screen but it doesn't display the blips. Can anyone tell me why? Any help is appreciated. My adaption of the script is below, here's where the original code can be found: http://forum.unity3d.com/viewtopic.php?p=189482.

@script ExecuteInEditMode()

var sphere : Texture;  //blip for spheres
var cube : Texture; //blip for cubes
var cone : Texture; //blip for cones
var cylinder : Texture; //blip for cylinders
var radarBG : Texture; //background texture (radar screen)

var centerObject : Transform;
var mapScale = 0.3;
var mapSizePercent = 15;

var sphereTag = "Sphere";
var cubeTag = "Cube";
var coneTag = "Cone";
var cylinderTag = "Cylinder";

enum radarLocationValues {topLeft, topCenter, topRight, middleLeft, middleCenter, middleRight, bottomLeft,     bottomCenter, bottomRight, custom}
var radarLocation : radarLocationValues = radarLocationValues.bottomLeft;

private var mapWidth : float;
private var mapHeight : float;
private var mapCenter : Vector2;
var mapCenterCustom : Vector2;

function Start () {
    setMapLocation();   
}

function OnGUI () {
//  GUI.matrix = Matrix4x4.TRS (Vector3.zero, Quaternion.identity, Vector3(Screen.width / 600.0, Screen.height / 450.0, 1));

    // Draw player blip (centerObject)
    bX=centerObject.transform.position.x * mapScale;
    bY=centerObject.transform.position.z * mapScale;   
    GUI.DrawTexture(Rect(mapCenter.x - mapWidth/2,mapCenter.y-mapHeight/2,mapWidth,mapHeight),radarBG);

    DrawBlipsForShapes();

}

function drawBlip(go,aTexture){

    centerPos=centerObject.position;
    extPos=go.transform.position;

    // first we need to get the distance of the enemy from the player
    dist=Vector3.Distance(centerPos,extPos);

    dx=centerPos.x-extPos.x; // how far to the side of the player is the enemy?
    dz=centerPos.z-extPos.z; // how far in front or behind the player is the enemy?

    // what's the angle to turn to face the enemy - compensating for the player's turning?
    deltay=Mathf.Atan2(dx,dz)*Mathf.Rad2Deg - 270 - centerObject.eulerAngles.y;

    // just basic trigonometry to find the point x,y (enemy's location) given the angle deltay
    bX=dist*Mathf.Cos(deltay * Mathf.Deg2Rad);
    bY=dist*Mathf.Sin(deltay * Mathf.Deg2Rad);

    bX=bX*mapScale; // scales down the x-coordinate so that the plot stays within our radar
    bY=bY*mapScale; // scales down the y-coordinate so that the plot stays within our radar

    if(dist<=mapWidth*.5/mapScale){
        // this is the diameter of our largest radar circle
       GUI.DrawTexture(Rect(mapCenter.x+bX,mapCenter.y+bY,4,4),aTexture);

    }

}

function DrawBlipsForShapes(){

    var gos : GameObject[];
    gos = GameObject.FindGameObjectsWithTag(sphereTag && cubeTag && coneTag && cylinderTag);

    var distance = Mathf.Infinity;
    var position = transform.position;

    // Iterate through them and call drawBlip function
    for (var go : GameObject in gos)  {
        var blipChoice : Texture;
        if(go.tag == "Sphere") {
            blipChoice = sphere;
        }
        drawBlip(go,blipChoice);
        if(go.tag == "Cube") {
            blipChoice = cube;
        }
        drawBlip(go,blipChoice);
        if(go.tag == "Cone") {
            blipChoice = cone;
        }
        drawBlip(go,blipChoice);
        if(go.tag == "Cylinder") {
            blipChoice = cylinder;
        }
        drawBlip(go,blipChoice);
    }

}

function setMapLocation () {
    mapWidth = Screen.width*mapSizePercent/100.0;
    mapHeight = mapWidth;

    //sets mapCenter based on enum selection
    if(radarLocation == radarLocationValues.topLeft){
        mapCenter = Vector2(mapWidth/2, mapHeight/2);
    } else if(radarLocation == radarLocationValues.topCenter){
        mapCenter = Vector2(Screen.width/2, mapHeight/2);
    } else if(radarLocation == radarLocationValues.topRight){
        mapCenter = Vector2(Screen.width-mapWidth/2, mapHeight/2);
    } else if(radarLocation == radarLocationValues.middleLeft){
        mapCenter = Vector2(mapWidth/2, Screen.height/2);
    } else if(radarLocation == radarLocationValues.middleCenter){
        mapCenter = Vector2(Screen.width/2, Screen.height/2);
    } else if(radarLocation == radarLocationValues.middleRight){
        mapCenter = Vector2(Screen.width-mapWidth/2, Screen.height/2);
    } else if(radarLocation == radarLocationValues.bottomLeft){
        mapCenter = Vector2(mapWidth/2, Screen.height - mapHeight/2);
    } else if(radarLocation == radarLocationValues.bottomCenter){
        mapCenter = Vector2(Screen.width/2, Screen.height - mapHeight/2);
    } else if(radarLocation == radarLocationValues.bottomRight){
        mapCenter = Vector2(Screen.width-mapWidth/2, Screen.height - mapHeight/2);
    } else if(radarLocation == radarLocationValues.custom){
        mapCenter = mapCenterCustom;
    }

}