%Mission script%

Questions & Answers
1

How can I make an object a "Goal" but also make the mission visible on-screen?

2

Well, that'd be GUI, make a label, position it where ever, make a string that appears there, and then you can change the string through code as the player travels... You could even add a num_Missions and make it bullet pointed.

var stringHere = "Hey! This is your mission stuff";

function OnGUI () {
    GUI.Label (Rect (10, 10, 100, 20), stringHere);
}

function Update () {
    //Psuedo:  If player did this (Boolean);
    stringHere = "This is your new mission";
}

This is probably sloppy/not working, but you get the idea.

3

Here You Are The Sripts

1). Attach this script to the player, Named mission

static var theObject : int = 0;

function Update ()
{

if(theObject == 3)//the notice for objective
{
Debug.Log("theObject is 3, Mission Sucess");//Costumesize what            
                                           //ever youlike
}

}

2). Attach this to theObject you create

static var amout : int = 1;//this is what amout of your object

function OnTriggerEnter (player : Collider)
{

if(player.gameObject.tag == "Player")//the tag of player
{
mission.theObject += amout;
Destroy(this.gameObject);//Destroy the Object
}

}