Building the circuitįor this circuit we need to to combine several components together to make a working game board.įirst we need a joystick. See De-bouncing input switches for Arduino for more about this. Game engine also does keyboard debouncing to make movement more accurate. It is the central point when dealing with the library. The game engine ties everything together, it can run the game loop, does all the rendering and also contains most of the helper classes to handle collision detection.

These components can also determine if a baddie has come into contact with the bullet. There are also helper classes that can move a component across the screen when fire is pressed. When baddies get to the edge of the screen they are marked as being 'offBoard'. Baddies can be made to move in a direction and also to track the player. We create an array of baddies and they can either be moved automatically by the game engine, or manually in code. Opponents are referred to as baddies in this library. Our player can also shoot things by pressing fire. The game library provides support for moving the player and detecting collisions with baddies. The player is moved by using the keys that make up the joystick. In our game library they player is the piece under our control, it is represented by a Player object. Source for this library and ziip download are available on git hub: Parts of the game library Our player Getting the source codeīear in mind that this game library is currently pre BETA, I'm presently improving the documentation, code and diagrams. Options for writing games are limited on a 20x4 display, but we've managed to put a few games together. In addition we need collision detection to work out when a baddie has been caught or the game is over because the player was hit. 20x4 display (other size will work too)įor a simple game we need some baddies, a player (that we can move) and possibly the ability to fire.First, let's start by taking a look at the parts needed to use this library: There is quite a lot of stuff going on in this library, so I'd like to start slow and build up. Here we discuss a game library that provides an easy way to write games with 20x4 parallel display and a few micro-switches.

20x4 lcd library fritzing part