Please help with skill point system javascript

Questions & Answers
1

Hello, I am in need of help. Basically I don’t want people to gain skill points when it goes below 0. Can someone please help me?

#pragma strict
var buttonName :String;
private var act :boolean;
public var LevelUpSystem : LevelUpSystem;
public var GUIManager : GUIManager;
var SkillPoints :boolean;
var closeOnButton :boolean; //Should it close again when you press b?

function OnGUI(){
GUI.Box(Rect(Screen.width / 4, Screen.height / 4, Screen.width / 2, Screen.height / 2), ""); //Background Box
if (GUI.Button (Rect(Screen.width / 4 + 15, Screen.height / 4 + 15, Screen.width / 2 - 30, Screen.height / 4 - 15), "Heal")){
	LevelUpSystem.skillPoints -= 1; //Where the problem might be.
	GUIManager.Health += 25;
}
}
2

this is in c# and written just for the example, im sure you can work out the logic, I’ve highlighted the important line with a comment

using UnityEngine;
using System.Collections;

[System.Serializable]
public class player
{
	public string name;
	public int strength;
	public int health;
	public int swordSkill;

	public player(string _name, int str, int hp, int swskill)
	{
		name = _name;
		strength = str;
		health = hp;
		swordSkill = swskill;
	}
}




public class skillScript : MonoBehaviour {

	// Use this for initialization
	public player superStud = new player("Pirate Unicorn", 100, 100, 0);

	public int availableSkillPoints =10;

	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {

	if(Input.GetKeyDown(KeyCode.Space))
		{
			if(availableSkillPoints > 0) //this is the important bit
			{
				superStud.swordSkill += 1;
				availableSkillPoints -= 1;
			}
			else
			{
				Debug.Log ("No Skill Points Available");
			}

		}

	}
}