alieninvasion is a small program simulatoring Alien Invasion Game.

Get the program

go get -v github.com/hatricker/alieninvasion

Compile the program

cd $GOPATH/src/github.com/hatricker/alieninvasion
make alien

It will generate a binary file called alieninvasion under ./bin folder

Run the program

Usage: ./bin/alieninvasion [-na <number of aliens> -mx <X> -my <Y> -mapfile <input map file> -output <output map file>]
  -mapfile string
    	Input map file
  -mx int
    	size of x-coordinate of map matrix
  -my int
    	size of y-coordinate of map matrix
  -na int
    	Number of Aliens (default 2)
  -nm int
    	Number of Moves (default 10000)
  -output string
    	output file to dump the map info

Explanation about the flags

• -mapfile : input map file which defines all the cities and paths connecting each other
• -mx : when mapfile is not provided, the program will generate a matrix map automatically. mx defines size of x-coordinate
• -my : when mapfile is not provided, the program will generate a matrix map automatically. my defines size of y-coordinate
• -na : number of aliens in the game.
• -nm : maximum possible moves in the game. The default value is 10000
• -output : output file name where the generated map is dumped to

A few examples

• To generate a map file

./bin/alieninvasion -mx 8 -my 8 -output worldmap.txt  

# The generated map is a 8x8 matrix. Each node on the matrix could have neighbor(s) in four directions

• To run the game with a pre-generated map. Note, there are a few pre-generated maps under ./maps folder.

./bin/alieninvasion -mapfile worldmap.txt -na 10 -nm 100 

# There will be 10 aliens scatted on the map randomly and the maximum possible moves are 100

• To run the game with an automatically generated map

./bin/alieninvasion -mx 7 -my 6 -na 10 -nm 100 

# There will be 10 aliens randomly scatted on a 7x6 automatically created map. The maximum possible moves are 100

• Note, if you want to save the map at the end of the game, you can redirect output to a file.

./bin/alieninvasion -mx 7 -my 6 -na 10 -nm 100 > endmap.txt

# Only map at the end is printed to Stdout. All other messages are sent to Stderr

Run tests

make test

Format the code

make nice