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I have been wanting to program a game and now I have done it. It's a fairly small script with no fluff like About boxes or instructions.

Now I need to make a chess game (kidding).

Hope everyone likes it. Cheers! 🥃

Update: Thanks to Dan_555's suggestion, I have changed the randomize option to move tiles around instead of using _arrayshuffle. Also, I added in a Settings option so you tell it how many moves to shuffle it. Download v.1.1 for these features.

 

The Slide Puzzle v.1.0.zipThe Slide Puzzle v.1.1.zip

Edited by abberration
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Hi, the game is nice but the array-shuffle can create unsolvable puzzles.

You have to swap the pieces one by one, in the code, just like you would do it manually.

(by moving the empty square up/down/left/right randomly, swapping the numbers) 

You can test a puzzle solver here:

https://gamingph.com/blackdesertmobile/puzzle/puzzle.html

 

Drag the pieces from the top square to the bottom square and in this order:

1 2 3

4 5 8

7 6

 

And the puzzle (afaik) can not be solved.

 

Edited by Dan_555
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As a general rule of thumb, a 2D shuffle puzzle of dimension N (that is of size NxN) is solvable iff, when reading values from, say, top left to bottom right, row by row) the number of permutations of cells (cell with value X appears before cell with value Y AND X > Y) is even. This works whatever the empty cell is. @Dan_555 example gives a odd number of permutations, hence it isn't solvable.

For those who care, here's a wiki page explaining the fact: https://fr.wikipedia.org/wiki/Signature_d'une_permutation

Sorry, as is often the case in wikipedia maths pages, there is no direct english translation. Try Google translate if that works, but many French terms used in combinatorics have only vague equivalent in english (and often ambiguous) due to a radically different approach to the domain.

Edited by jchd

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jchd,

Good to know. I tried to come up with a formula to figure out which tiles are adjacent, but I couldn't. I saw patterns and I knew I could hard code the moves, but that seemed lazy.

I have already implemented the moving tiles around in v.1.1. It is posted on the first post.

Now I'm off to make a BlackJack game!

Cheers.

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