/***********************************************
 *  CS2510 Fall 2011 
 *  Lecture #18_2
 *  VoidWorld fun, Statics
 ***********************************************/

import tester.*;
import image.*;
import world.*;
import java.util.*;

/** Crazy Color Painting */
class PaintWorld extends VoidWorld{
    int WIDTH = 500;
    int HEIGHT = 500;

    // Random number generator
    Random randy = new Random();
    
    // List of possible Colors
    ArrayList<String> colors;
    
    Scene canvas = new EmptyScene(this.WIDTH,this.HEIGHT);

    /** Construct and EyeColorWorld. Create the list of possible Colors */
    PaintWorld(){
        this.colors = new ArrayList<String>();
        this.colors.add("indigo");
        this.colors.add("chartreuse");
        this.colors.add("red");
        this.colors.add("goldenrod");
        this.colors.add("blue");
        this.colors.add("turquoise");
        this.colors.add("green");
        this.colors.add("purple");
    }
    
    /** Return my canvas object to be drawn */
    public Scene onDraw(){
        return this.canvas;
    }
    
    /** Creates a new spot every so often */
    public void onTick(){
        if(this.randy.nextInt(100) == 1) {
            this.canvas = this.canvas.placeImage(
                    new Circle(4,"solid",Helper.randColor(colors)),
                    new Posn(
                            this.randy.nextInt(this.WIDTH),
                            this.randy.nextInt(this.HEIGHT)));
        }
    }
    

    /** Add a Circle when the mouse is dragged */
    public void onMouse(int x, int y, String me){
        try{
            if(me.equals("drag")){
                this.canvas = this.canvas.placeImage(new Circle(8, "solid",
                                                            Helper.randColor(colors)),
                                                     new Posn(x,y));
            }
        }catch(ConcurrentModificationException e){
            // If the exception is thrown we can just ignore
            //   it, and not do anything
        }
    }
    
    /* Set my tick rate to something fairly fast */
    public double tickRate() {
        return .01;
    }
    
}

// A set of static helper methods for our class
class Helper {
    // Random number generator
    static Random randy = new Random();
    
    // Get a random color from a given array of colors
    static String randColor(ArrayList<String> colors) {
        return colors.get(randy.nextInt(colors.size()));
    }
    
}



/** Examples class to run our Masterpiece! */
class PaintExamples{
    /** Make a new one... */
    VoidWorld start = new PaintWorld();
    /** Start it up */
    VoidWorld end = start.bigBang();
}