133 | )
134 | }
135 |
--------------------------------------------------------------------------------
/src/util.ts:
--------------------------------------------------------------------------------
1 | import {ClassValue, clsx} from "clsx";
2 | import {twMerge} from "tailwind-merge";
3 | import {Dispatch, SetStateAction} from "react";
4 |
5 | /**
6 | * Combines class names using `clsx` and `twMerge` for optimized className merging.
7 | * @param inputs - Array of class values to be merged.
8 | * @returns A single string with combined and deduplicated class names.
9 | */
10 | export function cn(...inputs: ClassValue[]) {
11 | return twMerge(clsx(inputs));
12 | }
13 |
14 |
15 | /**
16 | * Handles the logic for arrow key presses, updating the game state.
17 | * @param gameMatrix - Current state of the game matrix.
18 | * @param key - The arrow key pressed ('up', 'down', 'left', 'right').
19 | * @param setGameMatrix - Function to update the game matrix.
20 | * @param setJustGenerated - Function to mark newly generated tiles.
21 | * @param setJustMergedMatrix - Function to mark newly merged tiles.
22 | * @param setCurrentScore - Function to update the current score.
23 | * @param setHighScore - Function to update the high score.
24 | * @param currentScore - Current game score.
25 | * @returns A boolean indicating if the game is over.
26 | */
27 | export function handleArrowKey(gameMatrix: number[][], key: string,
28 | setGameMatrix: Dispatch>,
29 | setJustGenerated: Dispatch>,
30 | setJustMergedMatrix: Dispatch>,
31 | setCurrentScore: Dispatch>,
32 | setHighScore: Dispatch>,
33 | currentScore: number): boolean {
34 | const intermediateJustMergedMatrix = [
35 | [false, false, false, false],
36 | [false, false, false, false],
37 | [false, false, false, false],
38 | [false, false, false, false],
39 | ]
40 |
41 | let trackedScore = currentScore;
42 |
43 | // Block merging
44 | console.log("Current score passed to util: " + currentScore);
45 |
46 | // Initialise updated matrix to return, gridSize, and map to prevent single-move remerging
47 | const previousMatrix = gameMatrix.map(row => [...row]);
48 | let newMatrix = [...gameMatrix];
49 |
50 | const gridSize = newMatrix.length;
51 | const justFormedMap : Map = new Map();
52 |
53 | // Initialise map with falses for all cells
54 | for (let i = 0; i= scanningLoopEnd : innerIndex < scanningLoopEnd; innerIndex += scanningLoopIncrement) {
71 | const columnIndex = isHorizontal ? innerIndex: outerIndex;
72 | const rowIndex = isHorizontal ? outerIndex: innerIndex;
73 |
74 | // Generic Block Movement Direction
75 | const movementLoopStart = isHorizontal ? columnIndex : rowIndex;
76 | const movementLoopEnd = isForward ? gridSize - 1 : 0;
77 | const movementLoopIncrement = isForward ? 1 : -1;
78 |
79 | let pointsGainedFromThisMove = 0;
80 |
81 | for (let movementCheckerIndex = movementLoopStart;
82 | isForward ? movementCheckerIndex < movementLoopEnd : movementCheckerIndex > movementLoopEnd;
83 | movementCheckerIndex += movementLoopIncrement) {
84 | // Generic Ahead-Check
85 | const indexAhead = movementCheckerIndex + (isForward ? 1 : -1);
86 |
87 | // Right/Left Block Shifting Logic
88 | if (isHorizontal && newMatrix[rowIndex][indexAhead] === 0 && newMatrix[rowIndex][movementCheckerIndex] !== 0) {
89 | const cellValue = newMatrix[rowIndex][movementCheckerIndex];
90 |
91 | newMatrix[rowIndex][movementCheckerIndex] = 0;
92 | newMatrix[rowIndex][indexAhead] = cellValue;
93 | }
94 | // Up/Down Block Shifting Logic
95 | if (!isHorizontal && newMatrix[indexAhead][columnIndex] === 0 && newMatrix[movementCheckerIndex][columnIndex] !== 0) {
96 | const cellValue = newMatrix[movementCheckerIndex][columnIndex];
97 |
98 | newMatrix[movementCheckerIndex][columnIndex] = 0;
99 | newMatrix[indexAhead][columnIndex] = cellValue;
100 | }
101 |
102 | // Right/Left Arrow Merge
103 | if (isHorizontal && !justFormedMap.get(`${rowIndex},${indexAhead}`)
104 | && !justFormedMap.get(`${rowIndex},${movementCheckerIndex}`)
105 | && newMatrix[rowIndex][movementCheckerIndex] === newMatrix[rowIndex][indexAhead]
106 | && newMatrix[rowIndex][movementCheckerIndex] !== 0) {
107 |
108 | newMatrix[rowIndex][movementCheckerIndex] = 0;
109 | newMatrix[rowIndex][indexAhead] *= 2;
110 | justFormedMap.set(`${rowIndex},${indexAhead}`, true);
111 | intermediateJustMergedMatrix[rowIndex][indexAhead] = true;
112 |
113 | setGameMatrix(newMatrix);
114 |
115 | pointsGainedFromThisMove += newMatrix[rowIndex][indexAhead];
116 | }
117 |
118 | // Down/Up Arrow Merge
119 | if (!isHorizontal && !justFormedMap.get(`${indexAhead},${columnIndex}`)
120 | && !justFormedMap.get(`${movementCheckerIndex},${columnIndex}`)
121 | && newMatrix[movementCheckerIndex][columnIndex] === newMatrix[indexAhead][columnIndex]
122 | && newMatrix[movementCheckerIndex][columnIndex] !== 0) {
123 |
124 | newMatrix[movementCheckerIndex][columnIndex] = 0;
125 | newMatrix[indexAhead][columnIndex] *= 2;
126 | justFormedMap.set(`${indexAhead},${columnIndex}`, true);
127 | intermediateJustMergedMatrix[indexAhead][columnIndex] = true;
128 |
129 | setGameMatrix(newMatrix);
130 |
131 | pointsGainedFromThisMove += newMatrix[indexAhead][columnIndex];
132 | }
133 | }
134 | trackedScore += pointsGainedFromThisMove
135 | if (pointsGainedFromThisMove > 0) {
136 | setCurrentScore( (oldScore: number) => oldScore + pointsGainedFromThisMove)
137 | setHighScore ((oldHighScore: number) => {
138 | return trackedScore > oldHighScore ? trackedScore : oldHighScore
139 | })
140 | setJustMergedMatrix(intermediateJustMergedMatrix.map(arr => [...arr]));
141 | }
142 | }
143 | }
144 | newMatrix = generateNewTile(previousMatrix, newMatrix, setJustGenerated);
145 | return isGameOver(newMatrix);
146 | }
147 |
148 |
149 | /**
150 | * Generates a fresh game matrix with initial random tiles for the game start.
151 | * @param gridSize - The size of the grid.
152 | * @returns A new game matrix initialized with two random tiles.
153 | */
154 | export function getFreshMatrix(gridSize: number): number[][] {
155 | const startingSlotIndices: number[] = [];
156 |
157 | const firstRandomNumber = getRandomNumber(gridSize)
158 | startingSlotIndices.push(firstRandomNumber);
159 | for (let i = 0; i [...arr]));
242 |
243 | return newMatrix;
244 | }
245 |
246 |
247 | /**
248 | * Checks if two matrices are different.
249 | * @param matrix1 - The first matrix to compare.
250 | * @param matrix2 - The second matrix to compare.
251 | * @returns A boolean indicating if there is any difference between the two matrices.
252 | */
253 | export function matrixHasChanged(matrix1: number[][], matrix2: number[][]): boolean {
254 | for (let i = 0; i {
272 | return arr.filter(cellValue => cellValue === 0)
273 | }))
274 | for (let rowIndex = 0; rowIndex= 0 && newI < matrix.length && newJ >= 0 && newJ < matrix[0].length) {
299 | if (matrix[newI][newJ] === focusCell) {
300 | return true;
301 | }
302 | }
303 | }
304 |
305 | }
306 | }
307 | return false;
308 | }
309 |
--------------------------------------------------------------------------------
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429 | Termination of your rights under this section does not terminate the
430 | licenses of parties who have received copies or rights from you under
431 | this License. If your rights have been terminated and not permanently
432 | reinstated, you do not qualify to receive new licenses for the same
433 | material under section 10.
434 |
435 | 9. Acceptance Not Required for Having Copies.
436 |
437 | You are not required to accept this License in order to receive or
438 | run a copy of the Program. Ancillary propagation of a covered work
439 | occurring solely as a consequence of using peer-to-peer transmission
440 | to receive a copy likewise does not require acceptance. However,
441 | nothing other than this License grants you permission to propagate or
442 | modify any covered work. These actions infringe copyright if you do
443 | not accept this License. Therefore, by modifying or propagating a
444 | covered work, you indicate your acceptance of this License to do so.
445 |
446 | 10. Automatic Licensing of Downstream Recipients.
447 |
448 | Each time you convey a covered work, the recipient automatically
449 | receives a license from the original licensors, to run, modify and
450 | propagate that work, subject to this License. You are not responsible
451 | for enforcing compliance by third parties with this License.
452 |
453 | An "entity transaction" is a transaction transferring control of an
454 | organization, or substantially all assets of one, or subdividing an
455 | organization, or merging organizations. If propagation of a covered
456 | work results from an entity transaction, each party to that
457 | transaction who receives a copy of the work also receives whatever
458 | licenses to the work the party's predecessor in interest had or could
459 | give under the previous paragraph, plus a right to possession of the
460 | Corresponding Source of the work from the predecessor in interest, if
461 | the predecessor has it or can get it with reasonable efforts.
462 |
463 | You may not impose any further restrictions on the exercise of the
464 | rights granted or affirmed under this License. For example, you may
465 | not impose a license fee, royalty, or other charge for exercise of
466 | rights granted under this License, and you may not initiate litigation
467 | (including a cross-claim or counterclaim in a lawsuit) alleging that
468 | any patent claim is infringed by making, using, selling, offering for
469 | sale, or importing the Program or any portion of it.
470 |
471 | 11. Patents.
472 |
473 | A "contributor" is a copyright holder who authorizes use under this
474 | License of the Program or a work on which the Program is based. The
475 | work thus licensed is called the contributor's "contributor version".
476 |
477 | A contributor's "essential patent claims" are all patent claims
478 | owned or controlled by the contributor, whether already acquired or
479 | hereafter acquired, that would be infringed by some manner, permitted
480 | by this License, of making, using, or selling its contributor version,
481 | but do not include claims that would be infringed only as a
482 | consequence of further modification of the contributor version. For
483 | purposes of this definition, "control" includes the right to grant
484 | patent sublicenses in a manner consistent with the requirements of
485 | this License.
486 |
487 | Each contributor grants you a non-exclusive, worldwide, royalty-free
488 | patent license under the contributor's essential patent claims, to
489 | make, use, sell, offer for sale, import and otherwise run, modify and
490 | propagate the contents of its contributor version.
491 |
492 | In the following three paragraphs, a "patent license" is any express
493 | agreement or commitment, however denominated, not to enforce a patent
494 | (such as an express permission to practice a patent or covenant not to
495 | sue for patent infringement). To "grant" such a patent license to a
496 | party means to make such an agreement or commitment not to enforce a
497 | patent against the party.
498 |
499 | If you convey a covered work, knowingly relying on a patent license,
500 | and the Corresponding Source of the work is not available for anyone
501 | to copy, free of charge and under the terms of this License, through a
502 | publicly available network server or other readily accessible means,
503 | then you must either (1) cause the Corresponding Source to be so
504 | available, or (2) arrange to deprive yourself of the benefit of the
505 | patent license for this particular work, or (3) arrange, in a manner
506 | consistent with the requirements of this License, to extend the patent
507 | license to downstream recipients. "Knowingly relying" means you have
508 | actual knowledge that, but for the patent license, your conveying the
509 | covered work in a country, or your recipient's use of the covered work
510 | in a country, would infringe one or more identifiable patents in that
511 | country that you have reason to believe are valid.
512 |
513 | If, pursuant to or in connection with a single transaction or
514 | arrangement, you convey, or propagate by procuring conveyance of, a
515 | covered work, and grant a patent license to some of the parties
516 | receiving the covered work authorizing them to use, propagate, modify
517 | or convey a specific copy of the covered work, then the patent license
518 | you grant is automatically extended to all recipients of the covered
519 | work and works based on it.
520 |
521 | A patent license is "discriminatory" if it does not include within
522 | the scope of its coverage, prohibits the exercise of, or is
523 | conditioned on the non-exercise of one or more of the rights that are
524 | specifically granted under this License. You may not convey a covered
525 | work if you are a party to an arrangement with a third party that is
526 | in the business of distributing software, under which you make payment
527 | to the third party based on the extent of your activity of conveying
528 | the work, and under which the third party grants, to any of the
529 | parties who would receive the covered work from you, a discriminatory
530 | patent license (a) in connection with copies of the covered work
531 | conveyed by you (or copies made from those copies), or (b) primarily
532 | for and in connection with specific products or compilations that
533 | contain the covered work, unless you entered into that arrangement,
534 | or that patent license was granted, prior to 28 March 2007.
535 |
536 | Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 |
540 | 12. No Surrender of Others' Freedom.
541 |
542 | If conditions are imposed on you (whether by court order, agreement or
543 | otherwise) that contradict the conditions of this License, they do not
544 | excuse you from the conditions of this License. If you cannot convey a
545 | covered work so as to satisfy simultaneously your obligations under this
546 | License and any other pertinent obligations, then as a consequence you may
547 | not convey it at all. For example, if you agree to terms that obligate you
548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 |
552 | 13. Use with the GNU Affero General Public License.
553 |
554 | Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
557 | combined work, and to convey the resulting work. The terms of this
558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 |
563 | 14. Revised Versions of this License.
564 |
565 | The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time. Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 |
570 | Each version is given a distinguishing version number. If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 |
584 | Later license versions may give you additional or different
585 | permissions. However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 |
635 | Copyright (C)
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | Copyright (C)
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
675 |
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