package mekstension;



import processing.core.PFont;

public class Hud
{
    private Mekstension p;
    private PFont font;
    private String mssg = "";
    private float alpha = 255;

    private boolean toggle = false;
    
    /**
     * constructor 
     * @param p_ Mekstension parent application
     */
    public Hud(Mekstension p_)
    {
        p = p_;
        font = p.loadFont( "data/HelveticaNeue-Light-48.vlw" );
        p.textFont( font, 18);
    }
    
    
    /**
     * draw loop
     */
    public void draw()
    {        
        p.fill(255, alpha);
        p.text(mssg, 20, p.height - 100);

        if( toggle )
            alpha = alpha - 5 > 0 ? alpha - 5 : 0;
        else 
            alpha = 255;
    }
    
    
    /**
     * log
     * @param mssg_ the message
     */
    public void log(String mssg_)
    {
        mssg = mssg_;
        alpha = 255;
    }
    
    
    
    /**
     * toggle hud on/off
     */
    public void toggle()
    {
        toggle = toggle ? false : true;
    }
}