/****
* Classes
****/
//<Write imports for supported plugins here>
// Character class with gravity and jump functionality
var Character = Container.expand(function () {
  var self = Container.call(this);
  var characterGraphics = self.attachAsset('character', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.velocityY = 0;
  self.gravity = 0.5;
  self.jumpStrength = -15;
  self.update = function () {
    self.velocityY += self.gravity;
    self.y += self.velocityY;
    // Prevent character from falling through the ground
    if (self.y > 2732 - 100) {
      self.y = 2732 - 100;
      self.velocityY = 0;
    }
  };
  self.jump = function () {
    if (self.y >= 2732 - 100) {
      // Allow jump only if on the ground
      self.velocityY = self.jumpStrength;
    }
  };
});

/****
* Initialize Game
****/
var game = new LK.Game({
  backgroundColor: 0x000000 //Init game with black background 
});

/****
* Game Code
****/
// Create and position the character in the middle of the screen
// Initialize assets used in this game.
var character = game.addChild(new Character());
character.x = 2048 / 2;
character.y = 2732 - 100;
// Create and position the sky at the top of the screen
var sky = LK.getAsset('sky', {
  anchorX: 0.5,
  anchorY: 0.5,
  x: 2048 / 2,
  y: 5
});
game.addChild(sky);
// Create and position the ground at the bottom of the screen
var ground = LK.getAsset('ground', {
  anchorX: 0.5,
  anchorY: 0.5,
  x: 2048 / 2,
  y: 2732 - 5
});
game.addChild(ground);
// Create and position the tube off the right side of the screen
var tube = LK.getAsset('tube', {
  anchorX: 0.5,
  anchorY: 0.5,
  x: 2048 + 50,
  y: 2732 - 150
});
game.addChild(tube);
// Handle touch events to make the character jump
game.down = function (x, y, obj) {
  character.jump();
};
// Update game state every tick
game.update = function () {
  character.update();
};