class ship { 
  //float x, y; 
  //int xpos[50];
  //int ypos[50];
  int positions = 50;
  int[] xpos = new int[positions];
  int[] ypos = new int[positions];
  //int radius; 
  int direction; 
  float speedX; 
  float speedY; 
  float friction; 
  float stepX; 
  float stepY; 
   
  void move() {  
    int y = ypos[xpos.length-1];
    int x = xpos[xpos.length-1];
    //PAC-MAN STYLE: if the object passes one edge, comes out the opposite side 
    if(ypos[xpos.length-1] > height/* || y < 0 || x > width || x < 0*/) { 
       ypos[xpos.length-1] = 0;
       //direction *= -1; 
     } 
     
    if(ypos[xpos.length-1] < 0) { 
      ypos[xpos.length-1] = height; 
    } 
     
    if(xpos[xpos.length-1] > width) { 
      xpos[xpos.length-1] = 0; 
    } 
     
    if (x < 0) { 
      xpos[xpos.length-1] = width; 
    } 
    
    stepX = speedX * direction; 
    stepY = speedY * direction; 
     
    if(abs(stepX) > .1 && abs(stepY) > .1) { 
      ypos[ypos.length - 1] -= stepY; 
      xpos[xpos.length - 1] -= stepX; 
    } 
    speedX *= friction; 
    speedY *= friction; 
  } 
   
  void draw() {
    xpos = intrepid.xpos;
    ypos = intrepid.ypos;
    for(int i = 0; i < intrepid.xpos.length-1; i++) {
      xpos[i] = xpos[i+1];
      ypos[i] = ypos[i+1];
    }
      for(int i = 0; i < xpos.length; i++) {
      noStroke();
      fill(255 - i*5);
      ellipse(xpos[i], ypos[i], i/5, i/5); 
    }
    intrepid.move();
    
  } 
   
} 
 
ship intrepid = new ship();
//ship barrier = new ship();
 
void setup() { 
  size(600,400);
  smooth();
  //intrepid.xpos = width/2; 
  //intrepid.ypos = height/2; 
  //intrepid.radius = 10; 
  intrepid.speedX = 0; 
  intrepid.speedY = 0; 
  intrepid.direction = 1; 
  intrepid.friction = 0.99;
  for(int i=0; i < intrepid.xpos.length; i++) {
    intrepid.xpos[i] = width/2;
    intrepid.ypos[i] = height/2;
  }
  //barrier.x = width/3;
  //barrier.y = height/3;
  //barrier.radius = 40;
  //barrier.direction = 0;
} 
 
void draw() { 
  background(255); 
  intrepid.draw();
  //barrier.draw();
} 
 
void keyPressed() { 
  if (key == CODED) { 
 
    if (keyCode == UP) { 
        //while(intrepid.speed < 2) { 
        intrepid.speedY++; 
        //} 
      }  
     
    if (keyCode == DOWN) { 
        intrepid.speedY--; 
      }   
       
    if (keyCode == RIGHT) { 
        //while(intrepid.speed < 2) { 
        intrepid.speedX--; 
        //} 
      }  
     
    if (keyCode == LEFT) { 
        intrepid.speedX++; 
      }   
  } 
}

class paddle {
  float xpos;
  float ypos;
  int wide;
  int high;
  
  void draw() {
    rect(xpos, ypos, wide, wide);
  }
  
  void move() {
    if (keyCode == RIGHT) { 
        //while(intrepid.speed < 2) { 
        intrepid.speedX--; 
        //} 
      }  
     
    if (keyCode == LEFT) { 
        intrepid.speedX++; 
      }   
  }
}

class ship { 
  //float x, y; 
  //int xpos[50];
  //int ypos[50];
  int positions = 50;
  int[] xpos = new int[positions];
  int[] ypos = new int[positions];
  //int direction; 
  float speedX; 
  float speedY; 
  float friction; 
  //float stepX; 
  //float stepY; 
   
  void move() {  
    int y = ypos[xpos.length-1];
    int x = xpos[xpos.length-1];
    //PAC-MAN STYLE: if the object passes one edge, comes out the opposite side 
    
    if(ypos[xpos.length-1] > height) { 
       ypos[xpos.length-1] = 0;
       //direction *= -1; 
     } 
     
    if(ypos[xpos.length-1] < 0) { 
      ypos[xpos.length-1] = height; 
    } 
     
    if(xpos[xpos.length-1] > width) { 
      xpos[xpos.length-1] = 0; 
    } 
     
    if (x < 0) { 
      xpos[xpos.length-1] = width; 
    } 
    
    //stepX = speedX * direction; 
    //stepY = speedY * direction; 
     
    if(abs(speedX) > .1 && abs(speedY) > .1) { 
      ypos[ypos.length - 1] -= speedY; 
      xpos[xpos.length - 1] -= speedX; 
    } 
    speedX *= friction; 
    speedY *= friction; 
  } 
   
  void draw() {
    //xpos = intrepid.xpos;
    //ypos = intrepid.ypos;
    for(int i = 0; i < xpos.length-1; i++) {
      xpos[i] = xpos[i+1];
      ypos[i] = ypos[i+1];
    }
      for(int i = 0; i < xpos.length; i++) {
      noStroke();
      fill(255 - i*5);
      ellipse(xpos[i], ypos[i], i/5, i/5); 
    }
    move();
    
  } 
   
} 
 
ship intrepid = new ship();
paddle block = new paddle();
 
void setup() { 
  size(600,400);
  smooth(); 
  
  
  intrepid.speedX = 0; 
  intrepid.speedY = 0; 
  //intrepid.direction = 1; 
  intrepid.friction = 0.99;
  for(int i=0; i < intrepid.xpos.length; i++) {
    intrepid.xpos[i] = width/2;
    intrepid.ypos[i] = height/2;
  }
  block.xpos = width/3;
  block.ypos = height/3;
  block.wide = 40;
} 
 
void draw() { 
  background(255); 
  intrepid.draw();
  block.draw();
  if(dist(intrepid.xpos[intrepid.xpos.length-1], intrepid.ypos[intrepid.ypos.length-1], block.xpos, block.ypos) <= block.wide + 5) {
    intrepid.speedX *= -1;
    intrepid.speedY *= -1;
  }
}
 
void keyPressed() { 
  if (key == CODED) { 
 
    if (keyCode == UP) { 
        //while(intrepid.speed < 2) { 
        intrepid.speedY++; 
        //} 
      }  
     
    if (keyCode == DOWN) { 
        intrepid.speedY--; 
      }   
      
    if (keyCode == RIGHT) { 
        //while(intrepid.speed < 2) { 
        intrepid.speedX--; 
        //} 
      }  
     
    if (keyCode == LEFT) { 
        intrepid.speedX++; 
      }   
  } 
}