#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <conio.h>int best = 0 ;// 定义2048游戏的结构体 
typedef struct { int martix[16];			// 当前4*4矩阵的数字 int martixPrior[16];	// 上一步的4*4矩阵的数字 int emptyIndex[16];		// 空位置的索引值 int emptyCount;			// 空位置的数量 int score;				// 当前的分数 int step;				// 记录操作步数 
}Game;int solve_best(int best){FILE *file;file = fopen("C:/Users/Redmi/Desktop/a.txt", "w"); // 以写入方式打开文件，如果文件不存在则创建if (file == NULL) {perror("Error opening file");return -1;}// 向文件中写入内容fprintf(file, "%d", best);fclose(file); // 关闭文件
}int get_best(){FILE *file;// 打开文件以读取原有数字file = fopen("C:/Users/Redmi/Desktop/a.txt", "r");if (file == NULL) {perror("Error opening file for reading");return -1;}int num = 0 ;// 读取原有数字int originalNumber;if (fscanf(file, "%d", &num) != 1) {perror("Error reading original number from file");fclose(file);return -1;}fclose(file); // 关闭文件return num ;
}// 生成[min, max]的随机整数
int RandomInt(int min, int max) {	srand((unsigned)time(NULL) + rand());	//以时间为随机种子return min + rand() % (max - min + 1);
}// 结构体的初始化 
void gameInit(Game *game) {int i;game->score = 0;game->step = 0;game->emptyCount = 16;for(i = 0; i < 16; i++) { game->martix[i] = 0;game->martixPrior[i] = 0;game->emptyIndex[i] = -1;}
}// 空位检测
void emptyDetect(Game *game) {int i = 0, j = 0;game->emptyCount = 0;for(i = 0; i < 16; i++) { game->emptyIndex[i] = -1; }for(i = 0; i < 16; i++) {if (game->martix[i] == 0) {game->emptyIndex[j++] = i;game->emptyCount++;}}
}// 在随机空位生成数字
void numberGenerate(Game *game) {int pos, numberIs4;numberIs4 = RandomInt(0, 3);	// 生成数字4的概率，这里为 1/4 pos = game->emptyIndex[RandomInt(0, game->emptyCount - 1)];if (numberIs4 == 0) { game->martix[pos] = 4; } else { game->martix[pos] = 2; }
} // 获取某行或某列
int *getLine(int *martix, int row, int col) {int i, *array;array = (int *)malloc(sizeof(int)*4);for (i = 0; i < 4; i++) {if (col != -1) { *(array+i) = *(martix + col+(i*4)); }if (row != -1) { *(array+i) = *(martix + row*4+i); }}return array;
} // 数字边缘对齐 
int *numberAlign(int *array, int reverse) {// reverse : 0: 向左对齐、向上对齐;  1: 向右对齐，向下对齐// 0 0 2 0 --> 2 0 0 0// 2 0 2 0 --> 2 2 0 0int i, j;int *newArray;newArray = (int *)malloc(sizeof(int)*4);for(j = 0; j < 4; j++) { *(newArray + j) = 0; }if (reverse == 0) {j = 0;for(i = 0; i < 4; i++) {if (*(array + i) != 0) { *(newArray + j) = *(array + i);j++;}}}if (reverse == 1) {j = 3;for(i = 3; i >= 0; i--) {if (*(array + i) != 0) {*(newArray + j) = *(array + i);j--;}}}return newArray;
}// 相邻数字相加
int *numberMerge(Game *game, int *array, int reverse) {int i, j, num1, num2;int *newArray;newArray = (int *)malloc(sizeof(int)*4);if (reverse == 0) {j = 0;for (i = 0; i < 4; i++) {num1 = *(array + i);num2 = 0;if (i != 3) { num2 = *(array + i + 1); } if (num1 == num2 && num1 > 0 && num2 > 0) {*(newArray + j) = num1 + num2;*(array + i + 1) = 0;game->score += (num1 + num2); } else {*(newArray + j) = *(array + i);}j++;}}if (reverse == 1) {j = 3;for (i = 3; i >= 0; i--) {num1 = *(array + i);num2 = 0;if (i != 0) { num2 = *(array + i - 1); }if (num1 == num2 && num1 > 0 && num2 > 0) {*(newArray + j) = num1 + num2;*(array + i - 1) = 0;game->score += (num1 + num2);} else {*(newArray + j) = *(array + i);}j--;}}return newArray;
}// 数字移动
void numberMoving(Game *game, int direction) {int *line[4];int i, j;switch(direction) {case 1:for (i = 0; i < 4; i++) {line[0] = getLine(game->martix, i, -1);line[1] = numberAlign(line[0], 0);line[2] = numberMerge(game, line[1], 0);line[3] = numberAlign(line[2], 0);for (j = 0; j < 4; j++) { game->martix[i*4+j] = *(line[3] + j);game->martixPrior[i*4+j] = *(line[0] + j);}}break;case 2:for(i = 0; i < 4; i++) {line[0] = getLine(game->martix, i, -1);line[1] = numberAlign(line[0], 1);line[2] = numberMerge(game, line[1], 1);line[3] = numberAlign(line[2], 1);for (j = 0; j < 4; j++) { game->martix[i*4+j] = *(line[3] + j);game->martixPrior[i*4+j] = *(line[0] + j);}}break;case 3:for(i = 0; i < 4; i++) {line[0] = getLine(game->martix, -1, i);line[1] = numberAlign(line[0], 0);line[2] = numberMerge(game, line[1], 0);line[3] = numberAlign(line[2], 0);for (j = 0; j < 4; j++) { game->martix[i+4*j] = *(line[3] + j);game->martixPrior[i+4*j] = *(line[0] + j);}}break;case 4:for(i = 0; i < 4; i++) {line[0] = getLine(game->martix, -1, i);line[1] = numberAlign(line[0], 1);line[2] = numberMerge(game, line[1], 1);line[3] = numberAlign(line[2], 1);for (j = 0; j < 4; j++) { game->martix[i+4*j] = *(line[3] + j); game->martixPrior[i+4*j] = *(line[0] + j);}}break;}for (j = 0; j < 4; j++) { free(line[j]); }}// 游戏结束判定
int gameOverDetect(Game *game) {// 当判定为输时返回 1 int i, j, row, col;if (game->emptyCount > 0) { return 0; }for (i = 0; i < 16; i++) {int numberBeside[4] = {0, 0, 0, 0};		// 相邻上下左右四个位置的数字row = i / 4;col = i % 4;if (row - 1 >= 0) { numberBeside[0] = game->martix[(row-1)*4+col]; }		// 获取上面的数字if (row + 1 < 4) { numberBeside[1] = game->martix[(row+1)*4+col]; }			// 获取下面的数字 if (col - 1 >= 0) { numberBeside[2] = game->martix[row*4+(col-1)]; }		// 获取左边的数字 if (col + 1 < 4) { numberBeside[3] = game->martix[row*4+(col+1)]; }			// 获取右边的数字 for(j = 0; j < 4; j++) {if (game->martix[i] == numberBeside[j]) { return 0; }}}return 1;
} // 键盘操作 
int keyboardPress() {// 返回值: 0: 无效操作; 1、2、3、4: 左右上下;int charAscii;charAscii = _getch();if (charAscii == 65 || charAscii == 97) { return 1; }		// A, 左if (charAscii == 68 || charAscii == 100) { return 2; }		// D, 右if (charAscii == 87 || charAscii == 119) { return 3; }		// W, 上if (charAscii == 83 || charAscii == 115) { return 4; }		// S, 下 return 0;
}// 检查数字是否移动过
int checkNumberMove(Game *game) {// 返回值: 0: 数字没有移动过; 1: 数字移动过 int i;for(i = 0; i < 16; i++) {if (game->martix[i] != game->martixPrior[i]) { return 1; } }return 0;
}// 游戏开始时随机生成2个数字 
void gameStart(Game *game) {int i;gameInit(game);emptyDetect(game);numberGenerate(game);emptyDetect(game);numberGenerate(game);emptyDetect(game);
}// 绘制画面
void drawGame(Game *game) {int row;system("cls");printf("\n      GAME : 2 0 4 8 BEST : %d    \n",best);printf("\n按键说明:  W:上  A:左  S:下  D:右\n\n");for(row = 0; row < 4; row++) {if (row == 0) { printf("---------------------------------\n"); }printf("|\t|\t|\t|\t|\n");if (game->martix[row*4] != 0) { printf("|%7d", game->martix[row*4]); } else { printf("|\t"); }if (game->martix[row*4+1] != 0) { printf("|%7d", game->martix[row*4+1]); } else { printf("|\t"); }if (game->martix[row*4+2] != 0) { printf("|%7d", game->martix[row*4+2]); } else { printf("|\t"); }if (game->martix[row*4+3] != 0) { printf("|%7d|\n", game->martix[row*4+3]); } else { printf("|\t|\n"); }printf("|\t|\t|\t|\t|\n");printf("---------------------------------\n");}printf("步数: %d\n分数: %d\n\n", game->step, game->score);
} // 主程序 
int main() {Game *gamePtr;int key;best = get_best() ;gamePtr = (Game *)malloc(sizeof(Game));gameInit(gamePtr);gameStart(gamePtr);drawGame(gamePtr);while(gameOverDetect(gamePtr) != 1) {key = keyboardPress();// 移动数字后生成数字 if (key != 0) {numberMoving(gamePtr, key);if (checkNumberMove(gamePtr) != 0) {emptyDetect(gamePtr);numberGenerate(gamePtr);emptyDetect(gamePtr);gamePtr->step += 1;drawGame(gamePtr); }}}printf("%d\n",gamePtr->score);if(gamePtr->score > best){solve_best(best) ;}printf("\n游 戏 结 束 ！\n"); return 0;
}

效果 :