//My maze.

void setup() {                                  
  background(255);                            //white
  size(500, 400);                             //screen size
  smooth();                                   //so lines aren't all pixelated

}

void draw () {
  strokeWeight(3);                            //maze's width
  stroke(0);                                  //maze's color=black
  line(20, 20, 220, 20);
  line(240, 20, 380, 20);
  line(20, 20, 20, 320);
  line(20, 320, 60, 320);
  line(80, 320, 380, 320);
  line(380, 320, 380, 20);                   //end of making the box outline

  line(20, 40, 360, 40);                     //the horizontal lines within the maze
  line(20, 60, 160, 60);
  line(180, 60, 360, 60);
  line(40, 80, 120, 80);
  line(140, 80, 360, 80);
  line(20, 100, 60, 100);
  line(80, 100, 360, 100);
  line(40, 120, 360, 120);
  line(40, 140, 120, 140);
  line(140, 140, 380, 140);
  line(20, 160, 320, 160);
  line(340, 160, 360, 160);
  line(20, 180, 60, 180);
  line(80, 180, 340, 180);
  line(20, 200, 120, 200);
  line(140, 200, 360, 200);
  line(20, 220, 100, 220);
  line(120, 220, 180, 220);
  line(200, 220, 380, 220);
  line(40, 240, 140, 240);
  line(160, 240, 260, 240);
  line(280, 240, 380, 240);
  line(40, 260, 120, 260);
  line(140, 260, 380, 260);
  line(40, 280, 120, 280);
  line(140, 280, 220, 280);
  line(240, 280, 360, 280);
  line(40, 300, 120, 300);
  line(140, 300, 320, 300);
  line(340, 300, 380, 300);

  line(200, 20, 200, 40);                  //the vertical lines within the maze
  line(360, 40, 360, 60);
  line(360, 80, 360, 100);
  line(180, 40, 180, 60);
  line(120, 80, 120, 100);
  line(200, 60, 200, 80);
  line(320, 300, 320, 260);
  line(120, 280, 120, 260);
  line(40, 300, 40, 280);
  line(40, 260, 40, 240);
  line(140, 280, 140, 260);
  line(140, 240, 140, 220);
  line(160, 240, 160, 220);
  line(120, 200, 120, 180);
  line(360, 200, 360, 140);
  line(140, 140, 140, 120);
  line(80, 120, 80, 140);

}

void mouseDragged () {
  strokeWeight(2);                            //lines width
  stroke(255, 0, 0);                          //makes the line red
  line (mouseX, mouseY, pmouseX, pmouseY);    //the "pen" feature, so you can draw in the maze with your mouse
}