/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://studio.sketchpad.cc/sp/pad/view/ro.h7uSv4dEtAL/rev.4
 * 
 * authors: 
 *   GoToLoop

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



/**
 * JoyStick Circle (v1.0)
 * GoToLoop (2015/Dec/05)
 *
 * forum.Processing.org/two/discussion/13786/how-make-key-combos
 * studio.ProcessingTogether.com/sp/pad/export/ro.9Zd5RXcA2S3CR
 */

static final int CIRCLE_SIZE = 25;

static final PVector UP_POS     = new PVector(125, 50);
static final PVector DOWN_POS   = new PVector(125, 200);
static final PVector LEFT_POS   = new PVector(50, 125);
static final PVector RIGHT_POS  = new PVector(200, 125);
static final PVector CENTER_POS = new PVector(125, 125);

PVector circlePos = CENTER_POS;

void keyPressed() {
  switch (keyCode) {
  case UP: 
    circlePos = UP_POS;
    break;
  case DOWN: 
    circlePos = DOWN_POS;
    break;
  case LEFT: 
    circlePos = LEFT_POS;
    break;
  case RIGHT: 
    circlePos = RIGHT_POS;
    break;
  default: 
    circlePos = CENTER_POS;
  }

  redraw();
}

void keyReleased() {
  circlePos = CENTER_POS;
  redraw();
}

void setup() {
  size(250, 250);
  smooth(4);
  noLoop();

  ellipseMode(CENTER);
  strokeWeight(2.5);
  stroke(0);
  fill(#FFFF00);
}

void draw() {
  background(0350);
  ellipse(circlePos.x, circlePos.y, CIRCLE_SIZE, CIRCLE_SIZE);
}