class Button {
  float _myX;
  float _myY;
  int _myWidth;
  int _myHeight;
  boolean isInside = false;
  color c;
  color c0 = color(0,0,0,255);
  color c1 = color(0,0,0,128);
  
  PImage myImage;
  
  public Button(float theX, float theY, int theWidth, int theHeight, String theImageFile) {
    _myX = theX;
    _myY = theY;
    _myWidth = theWidth;
    _myHeight = theHeight;
    myImage = loadImage(theImageFile);
  }
  
  void draw() {
   // c = (isInside)? c0:c1;
    
    if (isInside) {
      c = c0;
    } else {
      c = c1;
    }
    
    if(isDown && isInside) {
      _myX = mouseX-_myWidth/2;
      _myY = mouseY-_myHeight/2;
    }
    noStroke();
    fill(c);
    //rect(_myX,_myY,_myWidth, _myHeight);
    image(myImage, _myX, _myY, _myWidth, _myHeight);
  }
  
  boolean check(int theX, int theY) {
    if(isDown) {
    isInside = ((theX>(_myX)) && (theX<(_myX+_myWidth)) && 
      (theY>(_myY)) && (theY<(_myY+_myHeight))) ? true:false;
    }
    return isInside;
  }
  
  void reset() {
    isInside = false;
  }
}