Added gun tab at the bottom of the screen with temporary icons -- 1, 2, & 3 switch between weapons (current weapon is highlighted in red -- Added score value to enemies and total score variable to player (displayed in the top middle between the health bar and the cool down bar -- Zoomed camera out slightly and adjusted bounds so that gun icons don't interfere with gameplay -- Removed rigid bodies from bullets to avoid bullet-bullet collision -- rewrote collision function for enemy bullet due to glitch.