c语言----<项目>_小游戏<2048>

2048 小游戏 主要是针对逻辑思维的一个训练.

主要学习方面:1.随机数产生的概率.2.行与列在进行移动的时候几种情况.3.MessageBox的使用

#include <iostream>
#include <time.h>
#include <conio.h>
#include <windows.h>
using namespace std;
int board[4][4] = {0};							//二维数组
int if_need_rand;								//是否生成随机数
int if_game_over;								//游戏结束
void showGame() {								//打印边框
	system("cls");								//刷新屏幕
	printf("┏━━━┳━━━┳━━━┳━━━┓\n");
	for (int i = 0; i < 4; i++) {
		printf("┃");
		for (int j = 0; j < 4;j++) {
			if (board[i][j]==0) {
			printf("   ┃");
			}
			else {
				printf("%3d┃",board[i][j]);
			}
		}
		if (i<3) {
			printf("\n┣━━━╋━━━╋━━━╋━━━┫\n");
		}
		else {
			printf("\n┗━━━┻━━━┻━━━┻━━━┛\n");
		}
	}
}
//设计随机数
void addRand() {
	//随机数种子
	srand((unsigned)time(NULL));
	int i, j;//行列
	while (1) {
		i = rand() % 4;
		j = rand() % 4;
		if (board[i][j]==0) {
			//三目运算符,几率时2分之一
			board[i][j] = (rand() % 3 ? 2 : 4);
			break;
		}
		else {
			continue;
		}
	}
}
//初始化
void initGame() {
	if_need_rand = 1;
	if_game_over = 0;
	int i, j;
	i = rand() % 4;
	j = rand() % 4;
	board[i][j] = 2;
	//将数组内值,赋值为0;重新初始化
	for (int i = 0; i < 4; ++i) {
		for (int j = 0; j < 4; j++) {
			board[i][j] = 0;
		}
	}
	addRand();
	showGame();
}
//方向分为上下左右
//左移
void moveleft() {
	for (int i = 0; i < 4;i++) {
		for (int j = 1, k = 0; j < 4;++j) {
			//先找到K项后面第一个不为0的项
			if (board[i][j]!=0) {
				//分为三个情况.相等,k项是0,不等
				//相等
				if (board[i][k]==board[i][j]) {
					board[i][k++] <<= 1;		//k++先赋值给k而后k++到下一个位置,进行判断
					board[i][j] = 0;
					if_need_rand = 1;
				}else
				//k项是0
				if (board[i][k]==0) {
					board[i][k] = board[i][j];
					board[i][j] = 0;
					if_need_rand = 1;
				}
				//k项与j项不等,有两种情况,j项就在k项后边,
				//所以不能将j项赋值为0
				else {
					board[i][++k] = board[i][j];
					if (j!=k) {
						board[i][j] = 0;
						if_need_rand = 1;
					}
				}
			}
		}
	}
}
//右移
void moveRinght() {
	for (int i = 0; i < 4; i++) {
		for (int j = 2, k = 3; j >= 0; j--) {
			//先找到K项后面第一个不为0的项
			if (board[i][j] != 0) {
				//分为三个情况.相等,k项是0,不等
				//相等
				if (board[i][k] == board[i][j]) {
					board[i][k--] <<= 1;
					board[i][j] = 0;
					if_need_rand = 1;
				}
				else
					//k项是0
					if (board[i][k] == 0) {
						board[i][k] = board[i][j];
						board[i][j] = 0;
						if_need_rand = 1;
					}
				//k项与j项不等,有两种情况,j项就在k项后边,
				//所以不能将j项赋值为0
					else {
						board[i][--k] = board[i][j];
						if (j != k) {
							board[i][j] = 0;
							if_need_rand = 1;
						}
					}
			}
		}
	}
}
//上移
void moveup() {
	for (int i = 0; i < 4; i++) {
		for (int j = 1, k = 0; j < 4; ++j) {
			//先找到K项后面第一个不为0的项
			if (board[j][i] != 0) {
				//分为三个情况.相等,k项是0,不等
				//相等
				if (board[k][i] == board[j][i]) {
					board[k++][i] <<= 1;
					board[j][i] = 0;
					if_need_rand = 1;
				}
				else
					//k项是0
					if (board[k][i] == 0) {
						board[k][i] = board[j][i];
						board[j][i] = 0;
						if_need_rand = 1;
					}
				//k项与j项不等,有两种情况,j项就在k项后边,
				//所以不能将j项赋值为0
					else {
						board[++k][i] = board[j][i];
						if (j != k) {
							board[j][i] = 0;
							if_need_rand = 1;
						}
					}
			}
		}
	}
}
//下移
void moveDown() {
	for (int i = 0; i < 4; i++) {
		for (int j = 2, k = 3; j >=0; --j) {
			//先找到K项后面第一个不为0的项
			if (board[j][i] != 0) {
				//分为三个情况.相等,k项是0,不等
				//相等
				if (board[k][i] == board[j][i]) {
					board[k--][i] <<= 1;
					board[j][i] = 0;
					if_need_rand = 1;
				}
				else
					//k项是0
					if (board[k][i] == 0) {
						board[k][i] = board[j][i];
						board[j][i] = 0;
						if_need_rand = 1;
					}
				//k项与j项不等,有两种情况,j项就在k项后边,
				//所以不能将j项赋值为0
					else {
						board[--k][i] = board[j][i];
						if (j != k) {
							board[j][i] = 0;
							if_need_rand = 1;
						}
					}
			}
		}
	}
}
//查看有没有空着的格子
int getNull() {
	int n = 0;
	for (int i = 0; i < 4; ++i) {
		for (int j = 0; j < 4; ++j) {
			if (board[i][j] == 0) {
				n++;
			}
		}
	}
	return n;
}
//比较相邻的两个数,是否相等
void gameOver() {
	for (int i = 0; i < 4; ++i) {
		for (int j = 0; j < 3; ++j) {
			if (board[i][j] == board[i][j + 1] || board[j][i] == board[j + 1][i]) {
				if_game_over = 0;
				return;
			}
		}
	}
	if_game_over = 1;
}
//执行函数
void startGame() {
	on:
	initGame();				
	while (1) {
		if_need_rand = 0;//首先将随机值设为0.
		switch (_getch())
		{
		case 'a':
		case 'A':
		case 75:
			moveleft();
		break;
		case 'd':
		case 'D':
		case 77:
			moveRinght();
			break;
		case 'w':
		case 'W':
		case 72:
			moveup();
			break;
		case 's':
		case 'S':
		case 80:
			moveDown();
		default:
			break;
		}
		if (if_need_rand) {
			addRand();
			showGame();
		}
		//游戏判断
		if (getNull()==0) {
			gameOver();
			if (if_game_over) {
				if (MessageBox(NULL,L"是否重来一局!",L"游戏结束",MB_YESNO)==IDYES) { 
					goto on;
				}
				else {
					return;
				}
			}
		}
	}
}


int main() {
	startGame();
	return 0;
}