Espruino USB HID GamePad - v0.1a ready ! ( may also be Bluetooth & RN42 ready .. )

Back again: I updated the code to support the joysticks but still not luck with the troubles expressed above :/

the current api

gamepad.A.press(); // press a btn - 1st way
gamepad.A.release(); // release a btn - 1st way
gamepad.press([BUTTONS.A]); // release a btn - 2nd way
gamepad.release([BUTTONS.A]); // release a btn - 2nd way
gamepad.press([BUTTONS.A, BUTTONS.SELECT, BUTTONS.START]); // press multiple
gamepad.release([BUTTONS.A, BUTTONS.SELECT, BUTTONS.START]); // release multiple
gamepad.LJOY_X.move(45); // move joytick axis
gamepad.set({START:1, SELECT: 1, LJOY_X: 120}); // set many stuff at once
gamepad.unset(); // reset all to default
gamepad.sendState(); // send current buttons/joysticks/triggers positions over usb

var button = function(bLabel, bValue){ this.bLabel = bLabel; this.bValue = bValue & 0xFFFF; };
button.prototype.bLabel = '';
button.prototype.bValue = 0;
// set corresponding bit in gamepad obj
button.prototype.press = function(){
  //gamepad.btnState = ( gamepad.btnState | (1<<this.bValue) ) & 0xFFFF;
  //console.log('WTF: gamepad.btnState | ( (1<<this.bValue) & 0xFFFF) & 0xFFFF -->' + ( gamepad.btnState | ( (1<<this.bValue) & 0xFFFF) & 0xFFFF) );
console.log('WTF: gamepad.btnState | ( (1<<this.bValue) & 0xFFFF) & 0xFFFF -->' + ( gamepad.btnState | 1<<this.bValue) );
  //gamepad.btnState = gamepad.btnState | ( (1<<this.bValue) & 0xFFFF) & 0xFFFF;
  gamepad.btnState = gamepad.btnState | (1<<this.bValue) & 0xFFFFFFFF;
  console.log('button const value: ' + this.bValue);
  console.log('gamepad state: 0b' + gamepad.btnState.toString(2) );
}
// unset corresponding bit in gamepad obj
button.prototype.release = function(){
  gamepad.btnState = ( gamepad.btnState & ~(1<<this.bValue)) & 0xFFFF;
  console.log('button const value: ' + this.bValue);
  console.log('gamepad state: 0b' + gamepad.btnState.toString(2) );
}


var joystick = function(bLabel, objAttr){ this.bLabel = bLabel; this.objAttr = objAttr; };
joystick.prototype.bLabel = '';
joystick.prototype.objAttr = null;
joystick.prototype.move = function(value){
  console.log('joystick ' + this.bLabel + ' value: ' + value);
  console.log('joystick ' + this.objAttr + ' value: ' + value);
  //gamepad[this.bLabel] = value;
  gamepad[this.objAttr] = value;
  //this.objAttr = value;
};

var gamepad = {
  lastBtnState: 0b0000000000000000,
  btnState: 0b0000000000000000,
  x1: 0,
  y1: 0,
  x2: 0,
  y2: 0
}

// pass an array of btn to be pressed
// depending on the const(s) passed, we set the bits mapped from the const's value
gamepad.press = function(btnsArr){
  for(var i=0; i< btnsArr.length; i++){
    this.btnState = ( this.btnState | (1<<btnsArr[i]) ) & 0xFFFF;
    console.log('gamepad state: 0b' + this.btnState.toString(2) );
  }
};
// pass an array of btn to be pressed
// depending on the const(s) passed, we unset the bits mapped from the const's value
gamepad.release = function(btnsArr){
  for(var i=0; i< btnsArr.length; i++){
    this.btnState = ( this.btnState & ~(1<<btnsArr[i]) ) & 0xFFFF;
    console.log('gamepad state: 0b' + this.btnState.toString(2) );
  }
};
// "populate" the gamepad object with buttons children offering press() & release() methods
Object.keys(BUTTONS).forEach(function(bL­abel){
  gamepad[bLabel] = new button(bLabel, BUTTONS[bLabel]);
});
// "populate" the gamepad object with joysticks children offering move(), moveX() & moveY()  methods
var JOYSTICKS = { LJOY_X: 'x1', LJOY_Y: 'y1', RJOY_X: 'x2', RJOY_Y: 'y2' };
Object.keys(JOYSTICKS).forEach(function(­bLabel){
  //gamepad[bLabel] = new joystick(bLabel, gamepad[ JOYSTICKS[bLabel] ]);
  gamepad[bLabel] = new joystick(bLabel, JOYSTICKS[bLabel]);
});
// pass an array of elements to be set ( updated )
gamepad.set = function(optsObj){
  var that = this;
  Object.keys(optsObj).forEach(function(op­t){
    //that[opt] = optsObj[opt]; // nope: overwrites our objs -> we want to
    // if the label is present in the BUTTONS consts, then we act depending on the value passed to set or unset correspondign bit
    if(typeof BUTTONS[opt] !== 'undefined'){
      if(optsObj[opt] === 1) that.btnState = that.btnState | (1<<BUTTONS[opt]);
      else that.btnState = that.btnState & ~(1<<BUTTONS[opt] ) & 0xFFFF;
    }
    // else, somehow map to the correct joystick & set its value directly
    // Thnk: accept 'LJOY':[x, y] ?
    else {
      (opt === 'LJOY_X') ? that.x1 = optsObj[opt] :
      (opt === 'LJOY_Y') ? that.y1 = optsObj[opt] :
      (opt === 'RJOY_X') ? that.x2 = optsObj[opt] :
      (opt === 'RJOY_Y') ? that.y2 = optsObj[opt] : null ;
    }
  });
};
// resets the gamepad ( unset all pressed stuff & cie - aka release all btns & center joysticks )
gamepad.unset = function(optsObj){
  this.btnState = 0b0000000000000000;
  this.x1 = 0;
  this.y1 = 0;
  this.x2 = 0;
  this.y2 = 0;
};
// send the current state of the gamepad object over usb
gamepad.sendState = function(){
  E.sendUSBHID([
    this.btnState & 0xFF,      // Byte0
    (this.btnState>>8) & 0xFF, // Byte1
    this.x1,                   // Byte2
    this.y1,                   // Byte3
    this.x2,                   // Byte4
    this.y2,                   // Byte5
  ]);
};