I need to make a door open only when the player's essence has reached a certain level

Hi,

I am trying to script an interaction between the player and a door. The door has a trigger-collider on it and I want it to open when the player makes contact with it, BUT ONLY IF the player's essence (health) has reached a certain amount (at least 80); the process should then drain the player's health by 80. The essence is controlled by a different script and counts up at the rate of 0.5 p/s. I think the particular problem I am having is in accessing the currentEssence from the essenceScript and then subtracting from it as currentEssence is a variable and -80 is an integer. I have exhausted the forums for similar problems. Help me Obi Wan Kenobi: you're my only hope.

//essenceScript

var clockBG : Texture2D; var clockFG : Texture2D; var clockFGMaxWidth : float; private var currentEssence : float; var essenceRegen : float = 1;

function Start() { startTime = 10.0; clockFGMaxWidth = clockFG.width; currentEssence = 10; }

function Update () { currentEssence += essenceRegen * Time.deltaTime; if(currentEssence >= 100) currentEssence = 100; if(currentEssence <= 0) currentEssence = 0;

}

function OnGUI() {

  var newBarWidth:float = (currentEssence/100) * clockFGMaxWidth;
 
  Debug.Log("current essence " + currentEssence);
 
  var gap:int = 20;
 
  GUI.BeginGroup(new Rect (Screen.width - clockBG.width - gap, 
      gap, clockBG.width, clockBG.height));
      GUI.DrawTexture(Rect (0,0, clockBG.width, clockBG.height), clockBG);
 
      GUI.BeginGroup(new Rect(5,6, newBarWidth, clockFG.height));
          GUI.DrawTexture(Rect(0,0, clockFG.width, clockFG.height), clockFG);
      GUI.EndGroup();
  GUI.EndGroup();

}

//dooropener

private var currentEssence: essenceScript = GetComponent(essenceScript);

function OnTriggerEnter() {

if (currentEssence >= 80) currentEssence -80; yield WaitForSeconds (2); Destroy(gameObject);

}