这学期学了图形交互学，三个星期下来，突然意识到已经可以用c++写一个贪吃蛇了。
于是就用了两天写了这个小游戏。
其中一天写了核心代码，半天找核心代码中的bug，还有半天进行了界面及操作的优化。
但是有些代码写的依旧有些累赘，比如难度选择界面，不停用if语句，代码太杂了，但是也懒得去优化了，毕竟还有很多事情要做。
下面是游戏运行程序，建议在win10下运行，因为找了几个win7win8系统的童鞋貌似都不能运行，给了他们运行库，运行库也安装不上去。
下面是游戏界面截图。
好了接下来就贴出这些代码。仅供参考。
1 #include "stdafx.h" 2 #include3 #include 4 #include 5 #include 6 using namespace std; 7 8 //bug:运行游戏开始后不能按除方向键和wasd键外的其它键，不然会提示撞墙 9 10 11 /*画窗体边框*/ 12 void drawBorder(bool i, int borderWidth) 13 { 14 if (i) 15 { 16 setfillcolor(GREEN); 17 } 18 else 19 { 20 setfillcolor(RED); 21 } 22 bar(0, 0, getmaxx(), borderWidth - 1 - 1);//上边框 23 bar(0, 0, borderWidth - 1 - 1, getmaxy());//左边框 24 bar(getmaxx() - borderWidth + 1, 0, getmaxx(), getmaxy());//右边框 25 bar(0, getmaxy() - borderWidth + 1, getmaxx(), getmaxy());//下边框 26 } 27 28 /*贪吃蛇结构体*/ 29 struct Snake 30 { 31 int snakeX; 32 int snakeY; 33 }; 34 void drawSnake(struct Snake snakeHeadTemp, int snakeR) 35 { 36 setfillcolor(WHITE); 37 solidcircle(snakeHeadTemp.snakeX, snakeHeadTemp.snakeY, snakeR); 38 } 39 //擦除蛇尾 40 bool eraseSnake(struct Snake snakeHeadTemp, struct Snake snakeTail, int snakeR, struct Snake snakeFood) 41 { 42 if ((snakeHeadTemp.snakeX == snakeFood.snakeX) && (snakeHeadTemp.snakeY == snakeFood.snakeY)) 43 { 44 return true;//如果相同，则返回true，说明需要重新绘制一个食物并且不擦除当前蛇尾 45 } 46 else 47 { 48 setfillcolor(BLACK); 49 solidcircle(snakeTail.snakeX, snakeTail.snakeY, snakeR); 50 return false; 51 } 52 } 53 //检测是否和自身相撞 54 bool checkSnake(struct Snake *snake, struct Snake snakeHeadTemp, int * snakeLenPtr) 55 { 56 for (int i = 0; i < *snakeLenPtr; i++) 57 { 58 if (((snake + i)->snakeX == snakeHeadTemp.snakeX) && ((snake + i)->snakeY == snakeHeadTemp.snakeY)) 59 { 60 return false; 61 } 62 } 63 return true; 64 } 65 //对数组排序 66 void sortSnake(struct Snake *snake, struct Snake snakeHeadTemp, int * snakeLenPtr) 67 { 68 for (int i = *snakeLenPtr - 1; i >= 0; i--)//妈蛋，i>=0i>=0i>=0罚抄一百遍！这个bug找了整整半天啊卧槽！ 69 { 70 (snake + i + 1)->snakeX = (snake + i)->snakeX; 71 (snake + i + 1)->snakeY = (snake + i)->snakeY; 72 } 73 snake->snakeX = snakeHeadTemp.snakeX; 74 snake->snakeY = snakeHeadTemp.snakeY; 75 } 76 //去除尾巴 77 void eraseTail(struct Snake snakeTail, int snakeR) 78 { 79 setfillcolor(BLACK); 80 solidcircle(snakeTail.snakeX, snakeTail.snakeY, snakeR); 81 } 82 //主函数 83 int main() { 84 int screenX = 800;//窗口宽 85 int screenY = 600;//窗口高 86 int borderWidth = 20;//游戏边框宽度 87 int snakeX = 50; 88 int snakeY = 30; 89 int snakeR = 10; 90 int snakeI;//声明食物的横个数 91 int snakeJ;//声明化食物的纵个数 92 char ch = 'd'; 93 int foodCount = 0;//初始化吃掉的食物个数 94 TCHAR str[100];//用于存储提示文字 95 96 initgraph(screenX, screenY); 97 int speed = 100; 98 99 char choose;100 int hard = 1;101 102 restart:103 //初始化开始界面104 setfillcolor(BLUE);105 bar(0, 0, getmaxx(), getmaxy());106 setbkcolor(BLUE);107 setcolor(WHITE);108 settextstyle(30, 0, TEXT("黑体"));109 outtextxy(getmaxx() / 2 - 75, getmaxy() / 2 - 200, TEXT("英雄贪吃蛇"));110 settextstyle(15, 0, TEXT("黑体"));111 outtextxy(getmaxx() / 2 - 80, getmaxy() / 2 - 130, TEXT("请选择难度，切勿手滑"));112 setcolor(YELLOW);113 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 70, TEXT("->"));//200114 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 70, TEXT("脑残模式"));//200115 setcolor(WHITE);116 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 40, TEXT("凡人模式"));//100117 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 10, TEXT("大仙模式"));//30118 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 20, TEXT("自虐模式"));//20119 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 50, TEXT("退出游戏"));//退出120 settextstyle(13, 0, TEXT("黑体"));121 outtextxy(getmaxx() / 2 - 70, getmaxy() - 50, TEXT("版本 v1.1 made by cy"));122 123 //选择界面12 -32124 while (choose = _getch())125 {126 if (choose == -32) { choose = _getch(); }127 if (choose == 13)128 {129 if (hard == 1) { speed = 100; }130 if (hard == 2) { speed = 80; }131 if (hard == 3) { speed = 50; }132 if (hard == 4) { speed = 25; }133 if (hard == 5) { return 0; }134 break;135 }136 if (choose == 72) 137 {138 if (hard > 1) { hard--; }139 else{ hard = 5; }140 }141 if (choose == 80)142 {143 if (hard < 5) { hard++; }144 else { hard = 1; }145 }146 if (hard == 1)147 {148 settextstyle(15, 0, TEXT("黑体"));149 setcolor(BLUE);150 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 40, TEXT("->"));151 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 10, TEXT("->"));152 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 20, TEXT("->"));153 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 50, TEXT("->"));154 setcolor(YELLOW);155 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 70, TEXT("->"));156 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 70, TEXT("脑残模式"));157 setcolor(WHITE);158 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 40, TEXT("凡人模式"));159 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 10, TEXT("大仙模式"));160 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 20, TEXT("自虐模式"));161 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 50, TEXT("退出游戏"));162 speed = 100;163 }164 if (hard == 2)165 {166 settextstyle(15, 0, TEXT("黑体"));167 setcolor(BLUE);168 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 70, TEXT("->"));169 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 10, TEXT("->"));170 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 20, TEXT("->"));171 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 50, TEXT("->"));172 setcolor(WHITE);173 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 70, TEXT("脑残模式"));174 setcolor(YELLOW);175 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 40, TEXT("->"));176 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 40, TEXT("凡人模式"));177 setcolor(WHITE);178 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 10, TEXT("大仙模式"));179 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 20, TEXT("自虐模式"));180 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 50, TEXT("退出游戏"));181 speed = 80;182 }183 if (hard == 3)184 {185 settextstyle(15, 0, TEXT("黑体"));186 setcolor(BLUE);187 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 70, TEXT("->"));188 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 40, TEXT("->"));189 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 20, TEXT("->"));190 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 50, TEXT("->"));191 setcolor(WHITE);192 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 70, TEXT("脑残模式"));193 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 40, TEXT("凡人模式"));194 setcolor(YELLOW);195 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 10, TEXT("->"));196 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 10, TEXT("大仙模式"));197 setcolor(WHITE);198 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 20, TEXT("自虐模式"));199 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 50, TEXT("退出游戏"));200 speed = 50;201 }202 if (hard == 4)203 {204 settextstyle(15, 0, TEXT("黑体"));205 setcolor(BLUE);206 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 70, TEXT("->"));207 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 40, TEXT("->"));208 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 10, TEXT("->"));209 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 50, TEXT("->"));210 setcolor(WHITE);211 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 70, TEXT("脑残模式"));212 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 40, TEXT("凡人模式"));213 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 10, TEXT("大仙模式"));214 setcolor(YELLOW);215 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 20, TEXT("->"));216 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 20, TEXT("自虐模式"));217 setcolor(WHITE);218 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 50, TEXT("退出游戏"));219 speed = 25;220 }221 if (hard == 5)222 {223 settextstyle(15, 0, TEXT("黑体"));224 setcolor(BLUE);225 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 70, TEXT("->"));226 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 40, TEXT("->"));227 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 - 10, TEXT("->"));228 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 20, TEXT("->"));229 setcolor(WHITE);230 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 70, TEXT("脑残模式"));231 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 40, TEXT("凡人模式"));232 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 - 10, TEXT("大仙模式"));233 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 20, TEXT("自虐模式"));234 setcolor(YELLOW);235 outtextxy(getmaxx() / 2 - 50, getmaxy() / 2 + 50, TEXT("->"));236 outtextxy(getmaxx() / 2 - 30, getmaxy() / 2 + 50, TEXT("退出游戏"));237 }238 }239 240 241 242 setfillcolor(BLACK);243 settextstyle(20, 0, TEXT("黑体"));244 bar(0, 0, getmaxx(), getmaxy());245 setcolor(WHITE);246 setbkcolor(BLACK);247 outtextxy(getmaxx() / 2 - 135, getmaxy()/2-50, TEXT("食物还有5秒到达战场，碾碎它们！"));248 settextstyle(15, 0, TEXT("黑体"));249 outtextxy(getmaxx() / 2 - 175, getmaxy() / 2, TEXT("小提示：除了方向键，还可以用wasd键来控制方向哦~"));250 Sleep(5000);251 bar(0, 0, getmaxx(), getmaxy());252 253 drawBorder(true, borderWidth);254 //初始化贪吃蛇255 setfillcolor(YELLOW);256 int snakeLen = 1; int * snakeLenPtr = &snakeLen;//蛇的节点数，默认为1，即游戏一开始就有一个蛇头257 struct Snake snake[1064];258 snake->snakeX = borderWidth + 9; snake->snakeY = borderWidth + 9;//初始化蛇头259 solidcircle(snake->snakeX, snake->snakeY, snakeR);//初始化蛇头260 struct Snake snakeTail;//定义蛇尾snakeTail以及一个暂存蛇头的变量261 struct Snake snakeHeadTemp;//snakeHeadTemp用于在进行数组向后移动的时候保证蛇头不被覆盖262 struct Snake snakeFood;//snake的食物，随机产生263 //整个游戏思路是，如果蛇头遇到了新的食物，那么不擦除蛇尾，反之则擦除蛇尾264 265 //随机产生一个食物266 srand(time(NULL));267 snakeI = rand() % 38 + 1;268 snakeJ = rand() % 28 + 1;269 snakeFood.snakeX = borderWidth - 11 + 20 * snakeI;270 snakeFood.snakeY = borderWidth - 11 + 20 * snakeJ;271 setfillcolor(LIGHTRED);272 solidcircle(snakeFood.snakeX, snakeFood.snakeY, snakeR);273 274 char c;//用于处理方向键控制和wasd键的冲突275 while (1)276 {277 if (_kbhit())278 {279 c = _getch();280 if (c == 'a' || c == 'd' || c == 'w' || c == 's') { ch = c; }281 else {282 ch = _getch();283 if (ch == 75) { ch = 'a'; }284 if (ch == 77) { ch = 'd'; }285 if (ch == 72) { ch = 'w'; }286 if (ch == 80) { ch = 's'; }287 }288 }289 //存储蛇尾以及待添加的位置的值290 snakeTail.snakeX = snake[snakeLen - 1].snakeX;291 snakeTail.snakeY = snake[snakeLen - 1].snakeY;292 293 switch (ch)294 {295 case 'a'://左296 snakeHeadTemp.snakeX = snake->snakeX - 20;297 snakeHeadTemp.snakeY = snake->snakeY;298 break;299 case 'd'://右300 snakeHeadTemp.snakeX = snake->snakeX + 20;301 snakeHeadTemp.snakeY = snake->snakeY;302 break;303 case 'w'://上304 snakeHeadTemp.snakeY = snake->snakeY - 20;305 snakeHeadTemp.snakeX = snake->snakeX;306 break;307 case 's'://下308 snakeHeadTemp.snakeY = snake->snakeY + 20;309 snakeHeadTemp.snakeX = snake->snakeX;310 break;311 default:312 break;313 }314 //如果撞墙了315 if (snakeHeadTemp.snakeX > 769 || snakeHeadTemp.snakeX < 19 || snakeHeadTemp.snakeY < 19 || snakeHeadTemp.snakeY > 569)316 {317 drawBorder(false, borderWidth);318 setfillcolor(LIGHTGRAY);319 bar(0, getmaxy() / 2 - 30, getmaxx(), getmaxy() / 2 + 40);//提示框320 setbkcolor(LIGHTGRAY);321 _stprintf_s(str, _T("你撞墙啦！总共吃了%d个食物，5秒后自动重新开始游戏，渣渣⋯⋯"), foodCount);322 outtextxy(getmaxx() / 2 - 210, getmaxy() / 2, str);323 Sleep(5000);324 ch='d';325 hard = 1;326 foodCount = 0;327 goto restart;328 }329 if (checkSnake(snake, snakeHeadTemp, snakeLenPtr))330 {331 drawSnake(snakeHeadTemp, snakeR);332 sortSnake(snake, snakeHeadTemp, snakeLenPtr);//更新蛇身体内的数据333 //如果为真，说明吃到了食物，则需要重新分配一个食物。并且要把snakeTail推入数组334 if (eraseSnake(snakeHeadTemp, snakeTail, snakeR, snakeFood))335 {336 foodCount++;337 snake[snakeLen].snakeX = snakeTail.snakeX;338 snake[snakeLen].snakeY = snakeTail.snakeY;339 snakeLen++;340 eraseTail(snakeTail, snakeR);341 sortSnake(snake, snakeHeadTemp, snakeLenPtr);//更新蛇身体内的数据342 //随机产生一个食物343 snakeI = rand() % 38 + 1;344 snakeJ = rand() % 28 + 1;345 snakeFood.snakeX = borderWidth - 11 + 20 * snakeI;346 snakeFood.snakeY = borderWidth - 11 + 20 * snakeJ;347 }348 //每一步都刷新一下食物，因为有时会生成在蛇的身体上，如果不刷新就会被蛇的身体遮挡掉349 setfillcolor(LIGHTRED);350 solidcircle(snakeFood.snakeX, snakeFood.snakeY, snakeR);351 }352 else353 {354 drawBorder(false, borderWidth);355 setfillcolor(LIGHTGRAY);356 bar(0, getmaxy() / 2 - 30, getmaxx(), getmaxy() / 2 + 40);//提示框357 setbkcolor(LIGHTGRAY);358 _stprintf_s(str, _T("居然会有人撞到自己！噗笑尿！总共吃了%d个食物，5秒后自动重新开始游戏，渣渣⋯⋯"), foodCount);359 outtextxy(getmaxx() / 2 - 310, getmaxy() / 2, str);360 Sleep(5000);361 ch = 'd';362 hard = 1;363 foodCount = 0;364 goto restart;365 }366 Sleep(speed);367 }368 closegraph();369 return 0;370 }