/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://fgcs.sketchpad.cc/sp/pad/view/ro.nahPwMkSNPf/rev.445
 * 
 * authors: 
 *   Lachlan Dalaigh Wilger
 *   Doña Roberts
 *   Tessa White

 * license (unless otherwise specified): 
 *   creative commons attribution-share alike 3.0 license.
 *   https://creativecommons.org/licenses/by-sa/3.0/ 
 */ 






 
// Global variables

float radius = 50.0;int X, Y;int nX, nY;int delay = 16;

// Setup the Processing Canvas

void setup(){
  size( 200, 200 );
  strokeWeight( 10 );
  frameRate( 15 );
  X = width / 2;
  Y = height / 2;
  nX = X;
  nY = Y;  
}
// Main draw loop

void draw(){
  
  radius = radius + sin( frameCount / 4 );

  if (mousePressed)
    nY = 0;
  else
    nY = min(height,nY + 10);
  // Track circle to new destination
  X+=(nX-X)/delay;
  Y+=(nY-Y)/delay;
  
  // Fill canvas grey
  background( 255, 255, 255 );
  
  fill( 120, 120, 0 );
  
  // Set stroke-color white
  stroke( 155, 155, 0 ); 
  

  float tilt = sin(frameCount/10);
  // set inside color based on tilt
  if (tilt>0)
    fill( 110, 100, 0 );
  else
    fill( 100, 110, 0 );
  if (Y >= height-1) {
      Y = height;
      tilt = 0;
  }
  // Draw coin
  ellipse( X, Y, radius, radius*tilt );

}