50 lines
2.3 KiB
Text
50 lines
2.3 KiB
Text
;Task:
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Implement a 2D sliding block puzzle game where blocks with numbers are combined to add their values.
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;Rules of the game:
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:* The rules are that on each turn the player must choose a direction (up, down, left or right).
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:* All tiles move as far as possible in that direction, some move more than others.
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:* Two adjacent tiles (in that direction only) with matching numbers combine into one bearing the sum of those numbers.
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:* A move is valid when at least one tile can be moved, if only by combination.
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:* A new tile with the value of '''2''' is spawned at the end of each turn at a randomly chosen empty square (if there is one).
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:* Adding a new tile on a blank space. Most of the time, a new '''2''' is to be added, and occasionally ('''10%''' of the time), a '''4'''.
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:* To win, the player must create a tile with the number '''2048'''.
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:* The player loses if no valid moves are possible.
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The name comes from the popular open-source implementation of this game mechanic, [https://gabrielecirulli.github.io/2048/ 2048].
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;Requirements:
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* "Non-greedy" movement. <br> The tiles that were created by combining other tiles should not be combined again during the same turn (move). <br> That is to say, that moving the tile row of:
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<big><big> [2][2][2][2] </big></big>
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:: to the right should result in:
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<big><big> ......[4][4] </big></big>
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:: and not:
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<big><big> .........[8] </big></big>
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* "Move direction priority". <br> If more than one variant of combining is possible, move direction shall indicate which combination will take effect. <br> For example, moving the tile row of:
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<big><big> ...[2][2][2] </big></big>
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:: to the right should result in:
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<big><big> ......[2][4] </big></big>
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:: and not:
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<big><big> ......[4][2] </big></big>
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* Check for valid moves. The player shouldn't be able to skip their turn by trying a move that doesn't change the board.
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* Check for a win condition.
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* Check for a lose condition.
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<br><br>
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