psr794 / py2048

2048 game in Python

py2048

THE 2048 GAME

• The code contains the programs for the game '2048' in Python.
• The code was made using PYTHON(3.7) IDLE on Windows 10.

GAME RULES

• It starts with a grid having, a '2' anywhere on the grid.

• PLayer's aim is to generate the target number in the grid to win the game.

• Player will lose if he/she runs out of move, with the target number still not produced.

  THE GAME PLAY AND WIN/LOSE SITUATION

  • PLayer has to swipe the grid in the 4 directions according to the choice.
  • After each move a new '2' is spawned in the grid on empty spaces.
  • Swiping leads to the numberes shift to the last available empty space in the direction the grid is swiped.
  • PLayer has to produce a higher by fusing two similar numbers i.e only numbers whose Nth root is '2' can be produced.
  • If the player manages to prduce the target number before there is no move left i.e, if all spaces are occupied given no two similar numbers are adjacent in both the directions, then the player wins!.
  • another important rule is that, if a number is produced by fusion of two numbers then that fused number is not fused again with itself in that same move.

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ABOUT THE CODE

1. It asks the user to input the grid size and winning number.(input 0 for default settings [5X5 grid with 2048 as winning number])
2. The game starts and the user has to input 'w','a','s' or 'd' for swiping the grid in up,left,down and right directions resp.
3. Every time the user makes a move the code access the elements of grid in that direction to swipe the element step by step, and the grid gets modified.
4. It checks the lose or win conditions at each move and if the numbers cannot be swiped then it asks to try some other move.
5. Other moves like 'e' and 'r'are provided to exit and restart the game at any point.
6. 'c' displays the controls anytime the user wants to.
7. The code displays if the player has lost or won and breaks out of the loop.

INPUT INSTRUCTIONS

• Both the things (grid size and winning number) require 0 for the default settings.
• If an incorrect input is given to the grid size then it asks again for the input.
• If in the winning number anything other than a number is hit then it restarts the code.
• If a number whose Nth root is not '2' is pressed, then it asks to input a valid number.
• For the moves, if the move is not possible then it asks to try some other move.
• If any other key is pressed other than the specified keys then it prints "invalid input" and continues to ask till valid input is given, the game is continued.

WORKING OF CODE

WASD MOVES

Here is a simple example about how the code will work on making all the moves:

this is our sample grid

• now the user inputs 'w' that is the up swipe then the code enters the SWIPE function each time the player makes a move and swipes the numbers and modifies the grid in grid_modify according to the respective algorithm and as per the rules it gives this output

up swipe

• after modifying the grid the code checks evrytime if the SWIPE function had run, if it did then it spawns a 2 at random space.
• now if the user hits 'a'.

left swipe

• same process is repeated and the left swipe algorithm is used.
• now the user hits 's'

down swipe

• on each move the win or lose conditions are checked
• now if user inputs 'd'

right swipe

• When there is a win or lose situation the WIN_CHECK or LOSE_CHECK repectively returns a value which breaks the loop which is designed to demand input from the user.

INVALID MOVE

This a sample grid where for the next move the user inputs 'd' so as per the algorithm no element of the grid is swiped so it doesnt returns a value hence not spawning a 2 and giving a message of "try some other move".

sample

error

WIN AND LOSE

• If either of the functions (WIN_CHECK AND LOSE_CHECK) returns a value then it breaks the loop for game play. And displays a message.
• here is the example of it.

win

the print "winning number was 8" was just to tell that the input was 8 for winning number,actual code doesnt do that

lose

As we can see the grid is packed and the there is no adjacent like numbers in horizontal or vertical direction.