import java.applet.*; 
import java.awt.*; 
import java.awt.image.*; 
import java.awt.event.*; 
import java.io.*; 
import java.net.*; 
import java.text.*; 
import java.util.*; 
import java.util.zip.*; 

public class beachcomber extends BApplet {
// Beachcomber
// Kevan Davis, 5/4/03

int direction = 0;
int stone = 0;
int scatter = 0;
int wipenext = 1;
BImage beachpic;

void setup() 
{ 
  size(200,200); 

  beachpic = loadImage("god.jpg");

  noBackground(); 
} 
 
void loop() 
{ 
  int off = 0;
  for (int i = 0; i < 10000; i++) 
  { 
    int cX = (int)random(width-2)+1; 
    int cY = (int)random(height-2)+1; 
    int bX=0, bY=0;
    if (direction == 0) { bX = cX; bY = cY-1; }
    if (direction == 1) { bX = cX+1; bY = cY-1; }
    if (direction == 2) { bX = cX+1; bY = cY; }
    if (direction == 3) { bX = cX+1; bY = cY+1; }
    if (direction == 4) { bX = cX; bY = cY+1; }
    if (direction == 5) { bX = cX-1; bY = cY+1; }
    if (direction == 6) { bX = cX-1; bY = cY; }
    if (direction == 7) { bX = cX-1; bY = cY-1; }

    if (scatter == 1)
    {
      bX = bX+(int)random(3)-1;
      bY = bY+(int)random(3)-1;
    }

    if (bX < width && bX > 0 && bY < height && bY > 0)
    {
      int first = getPixel(cX, cY); 
      int second = getPixel(bX, bY); 
      if (red(first)+green(first)+blue(first) > red(second)+green(second)+blue(second))
      {
        setPixel(cX, cY, second); 
        setPixel(bX, bY, first); 
      }
    }
  } 

  if (wipenext == 1)
  {
    wipenext = 0;

    if (stone == 3)
    {
      image(beachpic, 0, 0);
    }
    else
    {
      for (int x = width-1; x >= 0; x--)
      { 
        for (int y = 0; y < height; y++)
        { 
          setPixel(x, y, pebble());
        } 
      }
    }
  }
} 

void keyPressed() 
{ 
  if(key == 'z' || key == 'Z')
  {
  size(100, 100); 
    direction++; if (direction == 8) { direction = 0; }
  } 
  if(key == ' ')
  {
    wipenext = 1;
  } 
  if(key == 'x' || key == 'X')
  {
    stone++; if (stone == 4) { stone = 0; }
    wipenext = 1;
  } 
  if(key == 'c' || key == 'C')
  {
    scatter = 1 - scatter;
  } 
} 
  
void mousePressed() 
{ 
  for (int yoff=-8; yoff<8; yoff++)
  {
   for (int xoff=-8; xoff<8; xoff++)
   {
    if (sqrt((xoff*xoff)+(yoff*yoff))<8)
    {
      int z = (int)random(255);
      if (mouseY+yoff > 0 && mouseY+yoff < height && 
          mouseX+xoff > 0 && mouseX+xoff < width)
      { setPixel(mouseX+xoff, mouseY+yoff, pebble()); }
    }
   }
  }
} 

int pebble() 
{
  if (stone == 0)
  {
    int z = (int)random(155)+100;
    return color(z,z/1.5f+random(50),z/3+random(50));
  }
  else if (stone == 2)
  {
    if ((int)random(2)==1) { return color(200,0,0); }
    return color(100,0,0);
  }
  else
  {
    int z = (int)random(255);
    return color(z,z,z); 
  }
}

}