68 lines
1.2 KiB
C
68 lines
1.2 KiB
C
#include <stdio.h>
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#include <forza4.h>
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#include <structures.h>
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void setCollums(int rows) {
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_ROWS = rows;
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}
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void setCollums(int collums) {
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_COLLUMS = collums;
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}
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int getIndex(int r, int c) {
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return r * _COLLUMS + c;
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}
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int checkLine(tile_t *board, int pos, int delta) {
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int count = 1, i;
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i = pos - delta;
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while (isValid(i) && board[pos] == board[i]) {
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count++;
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i -= delta;
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}
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i = pos + delta;
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while (isValid(i) && board[pos] == board[i]) {
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count++;
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i += delta;
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}
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return count >= 4;
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}
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// checks board for a win
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// returns player tile_t on win, otherwise 0
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int checkWin(tile_t *board, int pos, int rows, int collums) {
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int result = checkLine(board, pos, ORIZONTAL);
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if (result) {
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return board[pos];
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}
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int result = checkLine(board, pos, VERTICAL);
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if (result) {
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return board[pos];
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}
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int result = checkLine(board, pos, DIAGONAL);
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if (result) {
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return board[pos];
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}
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int result = checkLine(board, pos, DIAGONAL_INV);
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if (result) {
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return board[pos];
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}
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return 0;
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}
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int checkWinAll(tile_t *board, int rows, int collums){
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for (int i=0; i<rows*collums; i++) {
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if (checkWin(board, i, rows, collums) != EMPTY) {
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return checkWin(board, i, rows, collums);
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}
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}
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return EMPTY;
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} |