完整代码来自于爱编程的柚子《【C语言/C++游戏项目】：2048小游戏，超详细教程教会你写这个小游戏。》
#include <stdio.h>
#include <graphics.h>
#include <conio.h>
#define MAX_GRID 4
#define GRID_WIDTH 100
#define INTERVAL 15
using namespace std;
enum Color {
zero = RGB(205, 193, 180),
two1 = RGB(238, 228, 218),
two2 = RGB(237, 224, 200),
two3 = RGB(242, 177, 121),
two4 = RGB(245, 149, 99),
two5 = RGB(246, 124, 95),
two6 = RGB(246, 94, 59),
two7 = RGB(242, 177, 121),
two8 = RGB(237, 204, 97),
two9 = RGB(255, 0, 128),
two10 = RGB(145, 0, 72),
two11 = RGB(242, 17, 158),
back = RGB(187, 173, 160),
};
Color arr[13] = { zero,two1,two2, two3, two4, two5, two6, two7, two8, two9, two10,two11,back };
int num[12] = { 0,2,4,8,16,32,64,128,256,512,1024,2048 };
int map[MAX_GRID][MAX_GRID];
POINT pos[MAX_GRID][MAX_GRID];
bool flag = false;
//游戏初始界面，随机产生2或者4
int twoorfour() {
if (rand() % 10 == 1) {
return 4;
}
else {
return 2;
}
}
//随机位置，把数放在数组里面
void CreateNumber() {
while (1) {
int x=rand()%MAX_GRID;
int y=rand()%MAX_GRID;
if (map[x][y] == 0) {
map[x][y] = twoorfour();
break;
}
}
}
void GameInit() {
//设置随机数种子
srand(GetTickCount());
for (int i = 0;i < MAX_GRID;i++)
{
for (int k = 0;k < MAX_GRID;k++)
{
pos[i][k].x = k * GRID_WIDTH + (k + 1) * INTERVAL;
pos[i][k].y = i * GRID_WIDTH + (i + 1) * INTERVAL;
}
}
CreateNumber();
CreateNumber();
}
void GameDraw() {
//计算格子坐标
for (int i = 0;i < MAX_GRID;i++)
{
for (int k = 0;k < MAX_GRID;k++)
{
for (int q = 0;q < 12;q++) {
if (map[i][k] == num[q]) {
setfillcolor(arr[q]);
solidrectangle(pos[i][k].x, pos[i][k].y, pos[i][k].x + GRID_WIDTH, pos[i][k].y + GRID_WIDTH);
if (map[i][k] != 0)
{
char number[5] = " ";
settextcolor(RGB(119, 110, 101));
settextstyle(50, 0, "楷体");
setbkmode(TRANSPARENT);//背景颜色透明
sprintf(number, "%d", map[i][k]);
int tempx = textwidth(number);
tempx = GRID_WIDTH / 2 - tempx / 2;
int tempy = textheight(number);
tempy = GRID_WIDTH / 2 - tempy / 2;//文字居中
outtextxy(pos[i][k].x+tempx, pos[i][k].y+tempy, number);
}
}
}
}
}
}
//键盘操作数字移动
void moveup() {
for (int i = 0;i < MAX_GRID;i++)
{
int temp = 0;
for (int k = 1;k < MAX_GRID;k++) {
if (map[k][i] != 0) {
if (map[temp][i] == 0) {
map[temp][i] = map[k][i];
map[k][i] = 0;
}
else if (map[temp][i] == map[k][i]) {
map[temp][i] += map[k][i];
map[k][i] = 0;
}
else {
map[temp + 1][i] = map[k][i];
if (temp + 1 != k) {
map[k][i] = 0;
}
}
temp++;
flag = true;
}
}
}
}
void movedown() {
for (int i = 0;i < MAX_GRID;i++)
{
int temp = 3;
for (int k = MAX_GRID - 2;k >=0;k--) {
if (map[k][i] != 0) {
if (map[temp][i] == 0) {
map[temp][i] = map[k][i];
map[k][i] = 0;
}
else if (map[temp][i] == map[k][i]) {
map[temp][i] += map[k][i];
map[k][i] = 0;
}
else {
map[temp - 1][i] = map[k][i];
if (temp - 1 != k) {
map[k][i] = 0;
}
}
temp--;
flag = true;
}
}
}
}
void moveright() {
for (int i = 0;i < MAX_GRID;i++)
{
int temp = 3;
for (int k = 2;k >=0;k--) {
if (map[i][k] != 0) {
if (map[i][temp] == 0) {
map[i][temp] = map[i][k];
map[i][k] = 0;
}
else if (map[i][temp] == map[i][k]) {
map[i][temp] += map[i][k];
map[i][k] = 0;
}
else {
map[i][temp - 1] = map[i][k];
if (temp - 1 != k) {
map[i][k] = 0;
}
}
temp--;
flag = true;
}
}
}
}
void moveleft() {
for (int i = 0;i < MAX_GRID;i++)
{
int temp = 0;
for (int k = 1;k < MAX_GRID;k++) {
if (map[i][k] != 0) {
if (map[i][temp] == 0) {
map[i][temp] = map[i][k];
map[i][k] = 0;
}
else if (map[i][temp] == map[i][k]) {
map[i][temp] += map[i][k];
map[i][k] = 0;
}
else {
map[i][temp+1] = map[i][k];
if (temp + 1 != k) {
map[i][k] = 0;
}
}
temp++;
flag = true;
}
}
}
}
void gamejudge() {
if (flag) {
CreateNumber();
flag = false;
}
}
void GameControl() {
char key = _getch();
switch (key) {
case 'w':
moveup();
break;
case 'a':
moveleft();
break;
case 's':
movedown();
break;
case 'd':
moveright();
break;
}
}
int main() {
initgraph(MAX_GRID*GRID_WIDTH+5*INTERVAL,MAX_GRID*GRID_WIDTH + 5 * INTERVAL);
setbkcolor(RGB(187, 173, 160));
cleardevice();
GameInit();
while (1) {
GameDraw();
GameControl();
gamejudge();
}
getchar();
return 0;
}这个游戏用到了#include <graphics.h>，思路比较简单。
首先做出游戏页面，然后画出4*4的格子，利用map二维数组，依据数字{0,2,4,8,16,32,64,128,256,512,1024,2048}找到对应颜色在固定位置画出方框。
map二维数字中的数值会根据键盘操作使数字大小发生改变，进而使游戏页面发生改变。
做了几个游戏小程序后会发现，游戏程序的制作，本质上都是经过操作后使页面呈现发生变化，操纵游戏的是游戏设计者，而不是玩家，当明白这个思路后，也挺有趣的吧！
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