play button starts the game
user should press the shot button to play shot longer the user presses harder the ball goes.
top part of screen displays all the balls
center top of screen has pause button.
if user pots strip or solid ball first then he need to pot all the related ball and then the black ball at the end.
bottom right corner displays the turn of the player.
and also the type of ball which the player needs to pot.
Note: Not to pot black ball until all of your balls are potted.