Planning and starting the Zombie Arena game

At this point, if you haven't already, I suggest you go and watch a video of Over 9,000 Zombies (http://store.steampowered.com/app/273500/) and Crimson Land (http://store.steampowered.com/app/262830/).

Our game will obviously not be as in-depth or advanced as either of the examples but we will have the same basic set of features and game mechanics:

• A Heads-up Display (HUD) that shows details such as score, high score, bullets in clip,total bullets left, player health, and zombies left to kill

• The player will shoot zombies while frantically running away from them

• Move around a scrolling world using the  W, A, S, and D keys while aiming the gun using the mouse

• In between each level, choose a level up that will affect the way the game needs to be played to succeed

• Collect pick-ups to restore health and ammunition

• Each wave brings more zombies and a bigger arena

There will be three types of zombie to splatter. They will have different attributes such as appearance...