Over the course of this chapter, we will be creating a 2D multidirectional shooter game similar to Geometry Wars.
In this game, the player controls a ship. This ship can move around the screen using the keyboard and shoot projectiles in the direction that the mouse points at. Enemies and obstacles will spawn toward the player, and the player will avoid/shoot them. This chapter will also serve as a refresher on a lot of the concepts of working in Unity and give an overview of the recent addition of native 2D tools into Unity.
This project will be split into a number of tasks. It will be a simple step-by-step process from beginning to end. Here is the outline of our tasks:
Setting up the project
Creating our scene
Adding in player movement
Adding in shooting functionality
Creating enemies
Adding GameController to spawn enemy waves
Particle systems
Adding in audio
Adding in points, score, and wave numbers
Publishing the game
Before we start, we will need to get the latest Unity version, which you can always get by going to http://unity3d.com/unity/download/ and downloading it there:
At the time of writing this book, the version is 4.5.3, but this project should work in future versions with minimal changes.
We will also need some graphical assets for use in our project. These can be downloaded from the example code provided for this book on Packt Publishing's website (http://www.PacktPub.com).
Navigate to the preceding URL, and download the Chapter1.zip package and unzip it. Inside the Chapter1 folder, there are a number of things, including an Assets folder, which will have the art, sound, and font files you'll need for the project as well as the Chapter_1_Completed.unitypackage (this is the complete chapter package that includes the entire project for you to work with). I've also added in the complete game exported (TwinstickShooter Exported) as well as the entire project zipped up in the TwinstickShooter Project.zip file.