///// Make grass lean toward mouse.

float center, gx, gy, gh, gw, gspace;
//// coord of grass root, grass widht & height, spacing.

float cx,cy;
int cmany;
float horizon=150;

void setup()        //// Set size, initialize.
{
  size(640,480);
  center=  width/2;
  gh=  40;
  gspace=  25;
}

void draw()        //// Draw scene, etc.
{
  background( 200, 200, 250 );
  scene();
  clouds();
    //// +++++ Later, dude!      "STUB"
  // joe();
  // bomb();
}



void clouds()      ///// Clouds drift right.
{
  if (cx>width) 
  {
    cmany=  (int) (2 + random(6));
    cx=0;
    cy=  random( horizon / 2 );
  } else {
    cx = cx + 4;        // first cloud.
    cy=  cy + 2;
    
    int ty=10;
    float x=cx, y=cy;
    float cw=40, ch=20;
    ellipseMode(CENTER);
    for (int j=0; j<cmany; j++ )    //// Draw each cloud.
    {
        fill( 250,250,250, 150 );
        ellipse( x, y, cw, ch );
        fill(0);
        x = x +30;          //// Coords of next cloud
        y=  y + 15;
        cw -= 3;
        ch -=2 ;
    }
  }
  
}



void scene()        //// Sky, sun, grass that waves.
{
 
  //// Draw grass across bottom of screen.
  //// ++++ use for loop ---- later.
  
  float position;        //// position of mouse across screen width.  
  gy=  height;
  
  strokeWeight(2);
  stroke( 0, 200, 0 );
  
  position=  (mouseX - center ) / center;          /// -1 to +1

  text("mouseX:  "+mouseX, 10,10);
  text(position, 10,30);

  gx=0;

  for( gx=0; gx<=width; gx += gspace )
  { 
    gw=  gh * position;
    line( gx, gy,    gx+gw, gy-gh );
  }  
}