You spawn in with 3 lives.

Left Arrow key to move left Right Arrow key to move right Spacebar to shoot

Each invader is worth 10 pts with the occassional invader giving 300 pts. Each bunker has 10 hits before breaking. To end the game prematurely press Escape. This will take you to a screen that will reset the game.

Space Invaders is a two-dimensional fixed shooter game in which the player controls a laser cannon by moving it horizontally across the bottom of the screen and firing at descending aliens (space invaders). The aim is to defeat the rows of aliens. The player defeats an alien, and earns points, by shooting it with the laser cannon.

The aliens attempt to destroy the cannon by firing at it while they approach the bottom of the screen. If they reach the bottom, the alien invasion is successful and the game ends. Also, if the cannon is destroyed, the player loses a life. If the player is out of lives, the game ends.

Occasionally, a mystery ship will appear and move across the top of the screen (usually right-to-left). Once it makes it to the other side, it usually dissapears.

The laser cannon is partially protected by several stationary defense bunkers that are gradually destroyed by a numerous amount of blasts from the aliens or player.

Destroying a regular space invader should award 10 points. Destroying a mystery ship should award 100 points.

For this project, we will be using the Simple Build System (sbt). If you clone the project from the GitHub repository then everything will be setup for you. In order to compile your project, you can use the following command:

$ ./sbt compile

To run your project, use the following command:

$ ./sbt run

In order to clean your project (remove compiled code), use the following command:

$ ./sbt clean