//////// Exercise x2:  modularize exercise x1, and add dog to chase hero.
//////// Whoever Whoever  (CST 112; today's date?)

//////// Please change these to your name and today's date.
String author=  "Whoever Whatever";
String title=  " ??? ";
String help=  " Click to relocate hero \n 'q' to quit; 'r' to reset. ";
int count = 0;


//// GLOBALS:  coordinates, speed, etc.
float horizon;
float x, y;       // Position.
float dx=3, dy=2;     // Speed.
float dogX, dogY;


//// SETUP:  window size, initialization (start in middle of screen).
void setup() {
  size( 640,480);
  horizon=  height/4;
  x=  width/2;
  y=  height/2;
  dx=  3;
  dy=  2;
  //frameRate(2);
}

//// NEXT FRAME:  scene, action, show.
void draw() {
  count = count+1;
  scene();
  hero();
  dog();
  messages();
}

//// SCENE:  sky, sun, tree, house, etc.
void scene() {  
  /* INSERT YOUR CODE HERE! */    background( 200,255,255 );
  fill(0);
  /* REPLACE THIS STUB! */  text( "scene", 100, 100 );
}

void messages() {
  text( title, width/3, 20 );
  text( help, width*2/3, 30 );
  text( author, 10,height-20 );
}

//// ACTION:  move (x,y) coordinates of hero & dog; show them.
void hero() {
  /* INSERT YOUR CODE HERE! */
  /* REPLACE THIS STUB! */  text( "[[[[ Zoog. ]]]]", 200, 200 );
  
  rect( x,y, 50,80 );
  // move hero
 // x= x + dx; if we take this out the hero stays and dog follows.
  if (x>width-20) {dx=-dx;} 
  if (x<20) {dx=-dx; }
  //y= y+ dy;   if we take this out the hero stays and dog follows.
  if (y<20 || y>height-20){
    dy= - dy;
  }
}
void dog() {
  dogX=  dogX - (dogX-x)/30; // we can use frameRate(30); set frameRate =30
  dogY=  dogY - (dogY-y)/40;
  text( dogX, 10, 10 );
  text( dogY, 10, 20 );
  //
  fill( 150,0,0 );
  rect(dogX,dogY, 60,30 );
  /* INSERT YOUR CODE HERE! */
  /* REPLACE THIS STUB! */  text( "woof, woof!d!!", 150, 150 );
  stroke(150,0,0);
  strokeWeight(6);
  if (count/30 % 2 == 0){
  line(dogX,dogY+30,dogX,dogY+30+20);
  line(dogX,dogY+30,dogX+20,dogY+30+20);
  } else{
  line(dogX,dogY+30,dogX,dogY+30+20);
  line(dogX,dogY+30,dogX-20,dogY+30+20);
  }
  strokeWeight(1);
}





//////// HANDLERS:  mouse clicks, keys
void mousePressed() {
  x=  mouseX;                             // Set (x,y) to mouse
  y=  mouseY;
  //
  dx=  random( -6, +6 );                  // random speed.
  dy=  random( -4, +4 );
}

void keyPressed() {
  if (key == 'q') {
    exit();                           // press 'q' key to QUIT.
  }
  /* INSERT YOUR CODE HERE! */
}