Game Development Reference
In-Depth Information
chapter 10
A Simple
Shooting Game
This chapter will describe a simple game, develop a basic plan, and then cover its
implementation. The implementation will be done in a pragmatic iterative style.
A high-level first pass will get the game structure working. This will then be
refined until it approaches the original description of the game.
A simple game will demonstrate all the techniques that have been covered so far.
We'll build a 2D scrolling shooter game. This type of game is quite simple to
make and then easy to expand by adding more features. The pragmatic way to
develop this game is to create a working game as quickly as possible, but it's still
important to plan up front what these first stages will be. Figure 10.1 shows a
high-level overview of the game flow.
The idea for this game is to create a simple yet complete game. Therefore, there
will be a start screen, then an inner game, and finally a game over screen. The
inner game will have a spaceship the player can move. The player should
be able to press a button to fire a bullet that comes out of the front of the ship.
There only needs to be one level, but more would be nice. The level will begin
when the player goes from the start state to the inner game. After a set amount of
time, the level ends. If the player is still alive at the end of the level, then that
counts as a win; otherwise, the player loses the game. The level needs a number of
enemies that advance towards the player and are able to shoot bullets. Enemies
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