Tasks

• hero in middle of left edge of screen
• can't change pos in game
• Every three seconds a goblin appears at a random point on the right edge of the screen.
• The goblins move horizontally toward the left edge of the screen.
• A mousedown event on a point P on the screen triggers a bullet firing from the center of the hero to the direction of P, provided P is not in the hero’s icon
• bullets destroyed when goblin hit
• bullet destroyed when hits edge of screen
• goblin destroyed when hit
• number of goblins caught should update when a goblin is caught
• when goblin hit, play sound
• when goblin hit left edge, update number of escaped
• play sound when goblin escapes
• if goblin hits hero, goblin should be considered shot
• fullscreen
• bg image should cover entire screen
• use local storage for goblins caught
• use local storage for goblins escaped
• add bg sound