by Nina Sabado
An adaptation of the popular game Threes. Currently in command-line JS, considering eventually creating some HTML/CSS for it.
RUNNING THE GAME: I ran the game via Node.js, which had already been installed on my system from a previous JavaScript class I took. It has a really great I/O that I liked.
Via command line, input the arguments in this order:
$ node threes [# of rows] [# of columns] [% of board filled]
The final argument ([% of board filled]) is optional. If the program doesn't detect a value for this, then it will automatically use 50%.
INSTRUCTIONS:
COMMAND | ACTION
* Configuration
prob | Change the probability of tiles being filled
show | Prints out the current grid
reset | Reset the game
quit | Exit the game
* Movement
left | Go left
right | Go right
up | Go up
down | Go down
NOTE: Threes can only currently combine values at the edges, but I'm looking to change this soon.
ABOUT THE CODE
VARIABLES:
score Keeps track of the total value of numbers combined
moves Keeps track of the total number of moves made
leftable, rightable, uppable, downable
These four variables keep track of whether it's possible to move or not.
(If all four are false, then it signals the GAME OVER).
OBJECTS & INTERNAL FUNCTIONS
1. Square Object
A tile object, that only contains a value.
Integers could have been used instead, but for further ease of adaptation later,
I chose to make this an object.
INT. VARIABLES: val
2. Table Object
The game object, that contains a grid of Squares based on user-provided X, Y and % values.
INT. VARIABLES: row, col, per (ie. percentage), grid (ie. the array of Squares)
INT. FUNCTIONS:
print() Prints out the table object in the correct format
newSq() Outputs a new square based on the percentage provided
check() Given two squares, checks to see if they're mergeable
hShift() Given a start/stop value, shifts grid left or right (horizontally)
vShift() Given a start/stop value, shifts grid up or down (vertically)
left() Moves grid left
right() Moves grid right
up() Moves grid up
down() Moves grid down
halp() Prints out instuctions
done() Ends the program