c语言贪吃蛇游戏代码讲解（基于c语言的贪吃蛇游戏程序设计）

本文以实例的形式讲述了基于C语言实现的贪吃蛇游戏代码，这是一个比较常见的游戏，代码备有比较详细的注释，对于读者理解有一定的帮助。

贪吃蛇完整实现代码如下：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 #include <graphics.h> #include <conio.h> #include <stdlib.h> #include <dos.h> #define NULL 0 #define UP 18432 #define DOWN 20480 #define LEFT 19200 #define RIGHT 19712 #define ESC 283 #define ENTER 7181 struct snake {int centerx; int centery; int newx; int newy; struct snake *next; }; struct snake *head; int grade=60; /*控制速度的*******/ int a,b; /* 背静遮的位置*/ void *far1,*far2,*far3,*far4; /* 蛇身指针背静遮的指针虫子*/ int size1,size2,size3,size4; /* **全局变量**/ int ch=RIGHT; /**************存按键开始蛇的方向为RIGHT***********/ int chy=RIGHT; int flag=0; /*********判断是否退出游戏**************/ int control=4; /***********判断上次方向和下次方向不冲突***/ int nextshow=1; /*******控制下次蛇身是否显示***************/ int scenterx; /***************随即矩形中心坐标***************/ int scentery; int sx; /*******在a b 未改变前得到他们的值保证随机矩形也不在此出现*******/ int sy; /************************蛇身初始化**************************/ void snakede() { struct snake *p1,*p2; head=p1=p2=(struct snake *)malloc(sizeof(struct snake)); p1->centerx=80; p1->newx=80; p1->centery=58; p1->newy=58; p1=(struct snake *)malloc(sizeof(struct snake)); p2->next=p1; p1->centerx=58; p1->newx=58; p1->centery=58; p1->newy=58; p1->next=NULL; } /*******************end*******************/ void welcome() /*************游戏开始界面　，可以选择　速度**********/ { int key; int size; int x=240; int y=300; int f; void *buf; setfillstyle(SOLID_FILL,BLUE); bar(98,100,112,125); setfillstyle(SOLID_FILL,RED); bar(98,112,112,114); setfillstyle(SOLID_FILL,GREEN); bar(100,100,110,125); size=imagesize(98,100,112,125); buf=malloc(size); getimage(98,100,112,125,buf); cleardevice(); setfillstyle(SOLID_FILL,BLUE); bar(240,300,390,325); outtextxy(193,310,"speed:"); setfillstyle(SOLID_FILL,RED); bar(240,312,390,314); setcolor(YELLOW); outtextxy(240,330,"DOWN"); outtextxy(390,330,"UP"); outtextxy(240,360,"ENTER to start..." ); outtextxy(270,200,"SNAKE"); fei(220,220); feiyang(280,220); yang(340,220); putimage(x,y,buf,COPY_PUT); setcolor(RED); rectangle(170,190,410,410); while(1) { if(bioskey(1)) /********8选择速度部分************/ key=bioskey(0); switch(key) { case ENTER: f=1; break; case DOWN: if(x>=240) { putimage(x-=2,y,buf,COPY_PUT); grade++; key=0; break; } case UP: if(x<=375) { putimage(x+=2,y,buf,COPY_PUT); grade--; key=0; break; } } if (f==1) break; } /********** end ****************/ free(buf); } /*************************随即矩形*****************/ /***********当nextshow 为1的时候才调用此函数**********/ void ran() { int nx; int ny; int show; /**********控制是否显示***********/ int jump=0; struct snake *p; p=head; if(nextshow==1) /***********是否开始随机产生***************/ while(1) {show=1; randomize(); nx=random(14); ny=random(14); scenterx=nx*22+58; scentery=ny*22+58; while(p!=NULL) { if(scenterx==p->centerx&&scentery==p->centery||scenterx==sx&&scentery==sy) {show=0; jump=1; break; } else p=p->next; if(jump==1) break; } if(show==1) {putimage(scenterx-11,scentery-11,far3,COPY_PUT); nextshow=0; break; } } } /***********过关动画**************/ void donghua() { int i; cleardevice(); setbkcolor(BLACK); randomize(); while(1) {for(i=0;i<=5;i++) {putpixel(random(640),random(80),13); putpixel(random(640),random(80)+80,2); putpixel(random(640),random(80)+160,3); putpixel(random(640),random(80)+240,4); putpixel(random(640),random(80)+320,1); putpixel(random(640),random(80)+400,14); } setcolor(YELLOW); settextstyle(0,0,4); outtextxy(130,200,"Wonderful!!"); setfillstyle(SOLID_FILL,10); bar(240,398,375,420); feiyang(300,400); fei(250,400); yang(350,400); if(bioskey(1)) if(bioskey(0)==ESC) { flag=1; break; } } } /*************************end************************/ /***********************初始化图形系统*********************/ void init() {int a=DETECT,b; int i,j; initgraph(&a,&b,""); } /***************************end****************************/ /***画立体边框效果函数******/ void tline(int x1,int y1,int x2,int y2,int white,int black) { setcolor(white); line(x1,y1,x2,y1); line(x1,y1,x1,y2); setcolor(black); line(x2,y1,x2,y2); line(x1,y2,x2,y2); } /****end*********/ /*************飞洋标志**********/ int feiyang(int x,int y) {int feiyang[18][18]={ {0,0,0,0,0,0,1,1,1,1,1,1,0,1,1,0,0,0}, {0,0,0,0,0,1,1,1,0,0,1,1,1,1,1,0,0,0}, {0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,0,0,0}, {0,0,0,1,1,1,0,0,0,0,0,0,0,1,1,0,0,0}, {0,0,0,1,1,0,0,0,0,0,0,1,1,0,0,0,0,0}, {0,0,1,1,0,0,0,0,0,0,1,1,1,0,0,0,0,0}, {0,0,1,1,0,1,1,1,1,1,1,0,0,0,0,0,0,0}, {0,0,1,1,1,1,1,0,0,1,0,0,1,1,0,0,0,0}, {0,0,1,1,1,0,0,0,0,1,0,1,1,1,0,0,0,0}, {0,0,1,1,0,1,1,1,0,1,1,1,0,0,0,0,0,0}, {0,0,1,1,0,0,0,1,0,0,1,1,0,0,0,0,0,0}, {0,0,1,1,0,0,0,1,1,0,0,1,1,0,0,1,0,0}, {0,0,1,1,1,0,0,1,1,0,0,1,1,0,0,1,0,0}, {0,0,1,1,1,1,0,1,1,1,1,1,1,0,1,1,0,0}, {0,0,0,1,1,1,0,1,1,1,1,1,0,0,1,0,0,0}, {0,0,0,0,1,1,1,0,0,0,0,0,0,1,1,0,0,0}, {0,0,0,0,0,1,1,1,0,0,0,0,1,1,0,0,0,0}, {0,0,0,0,0,1,1,1,1,1,1,1,1,0,0,0,0,0}}; int i,j; for(i=0;i<=17;i++) for(j=0;j<=17;j++) {if (feiyang[i][j]==1) putpixel(j+x,i+y,RED); } } /********"飞"字*************/ int fei(int x,int y) {int fei[18][18]={{1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}, {0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0}, {0,1,1,1,0,0,0,0,1,1,1,0,0,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,1,1,0,0,1,0,0,0,0}, {0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0,0}, {0,0,0,0,0,0,0,0,0,1,1,0,1,1,0,0,0,0}, {0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,1,1,0,1,1,1,0,0,0}, {0,0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0}, {0,0,0,0,0,0,0,0,0,0,0,1,1,0,1,1,0,0}, {0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0}, {0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,1,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0}}; int i,j; for(i=0;i<=17;i++) for(j=0;j<=17;j++) {if (fei[i][j]==1) putpixel(j+x,i+y,BLUE); } } /*********"洋"字**************/ int yang(int x,int y) { int yang[18][18]={{0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0}, {1,1,0,0,0,0,1,1,1,0,0,0,1,1,0,0,0,0}, {0,1,1,1,0,0,0,1,1,1,0,1,1,0,0,0,0,0}, {0,0,1,1,0,0,0,0,0,1,1,1,0,0,0,1,0,0}, {0,0,0,1,0,1,1,1,1,1,1,1,1,1,1,1,1,0}, {0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0}, {1,1,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0}, {0,1,1,1,0,0,0,0,0,0,1,0,0,1,0,0,0,0}, {0,0,1,1,0,0,0,1,1,1,1,1,1,1,1,0,0,0}, {0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0}, {0,0,0,1,0,0,1,0,0,0,1,0,0,0,0,0,0,0}, {0,0,0,0,0,1,1,0,0,0,1,0,0,0,0,1,1,0}, {0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, {0,0,0,1,1,0,0,0,0,0,1,0,0,0,0,0,0,0}, {1,1,1,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0}, {0,1,1,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0}, {0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0}, {0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0}}; int i,j; for(i=0;i<=17;i++) for(j=0;j<=17;j++) {if (yang[i][j]==1) putpixel(j+x,i+y,BLUE); } } /******************主场景**********************/ int bort() { int a; setfillstyle(SOLID_FILL,15); bar(49,49,71,71); setfillstyle(SOLID_FILL,BLUE); bar(50,50,70,70); size1=imagesize(49,49,71,71); far1=(void *)malloc(size1); getimage(49,49,71,71,far1); cleardevice(); setfillstyle(SOLID_FILL,12); bar(49,49,71,71); size2=imagesize(49,49,71,71); far2=(void *)malloc(size2); getimage(49,49,71,71,far2); setfillstyle(SOLID_FILL,12); bar(49,49,71,71); setfillstyle(SOLID_FILL,GREEN); bar(50,50,70,70); size3=imagesize(49,49,71,71); far3=(void *)malloc(size3); getimage(49,49,71,71,far3); cleardevice(); /*取蛇身节点背景节点虫子节点end*/ setbkcolor(8); setfillstyle(SOLID_FILL,GREEN); bar(21,23,600,450); tline(21,23,600,450,15,8); /***开始游戏场景边框立体效果*******/ tline(23,25,598,448,15,8); tline(45,45,379,379,8,15); tline(43,43,381,381,8,15); tline(390,43,580,430,8,15); tline(392,45,578,428,8,15); tline(412,65,462,85,15,8); tline(410,63,464,87,15,8); tline(410,92,555,390,15,8); tline(412,94,553,388,15,8); tline(431,397,540,420,15,8); tline(429,395,542,422,15,8); tline(46,386,377,428,8,15); tline(44,384,379,430,8,15); setcolor(8); outtextxy(429,109,"press ENTER "); outtextxy(429,129,"---to start"); /*键盘控制说明*/ outtextxy(429,169,"press ESC "); outtextxy(429,189,"---to quiet"); outtextxy(469,249,"UP"); outtextxy(429,289,"LEFT"); outtextxy(465,329,"DOWN"); outtextxy(509,289,"RIGHT"); setcolor(15); outtextxy(425,105,"press ENTER "); outtextxy(425,125,"---to start"); outtextxy(425,165,"press ESC "); outtextxy(425,185,"---to quiet"); outtextxy(465,245,"UP"); outtextxy(425,285,"LEFT"); outtextxy(461,325,"DOWN"); outtextxy(505,285,"RIGHT"); /*******end*************/ setcolor(8); outtextxy(411,52,"score"); outtextxy(514,52,"left"); setcolor(15); outtextxy(407,48,"score"); outtextxy(510,48,"left"); size4=imagesize(409,62,465,88); /****分数框放到内存********/ far4=(void *)malloc(size4); getimage(409,62,465,88,far4); putimage(500,62,far4,COPY_PUT); /*******输出生命框***********/ setfillstyle(SOLID_FILL,12); setcolor(RED); outtextxy(415,70,"0"); /***************输入分数为零**********/ outtextxy(512,70,"20"); /*************显示还要吃的虫子的数目*********/ bar(46,46,378,378); feiyang(475,400); fei(450,400); yang(500,400); outtextxy(58,390,"mailto:jiangzhiliang002@tom.com"); outtextxy(58,410,"snake game"); outtextxy(200,410,"made by yefeng"); while(1) { if(bioskey(1)) a=bioskey(0); if(a==ENTER) break; } } /******************gameover()******************/ void gameover() { char *p="GAME OVER"; int cha; setcolor(YELLOW); settextstyle(0,0,6); outtextxy(100,200,p); while(1) {if(bioskey(1)) cha=bioskey(0); if(cha==ESC) {flag=1; break; } } } /***********显示蛇身**********************/ void snakepaint() {struct snake *p1; p1=head; putimage(a-11,b-11,far2,COPY_PUT); while(p1!=NULL) {putimage(p1->newx-11,p1->newy-11,far1,COPY_PUT); p1=p1->next; } } /****************end**********************/ /*********************蛇身刷新变化游戏关键部分 *******************/ void snakechange() {struct snake *p1,*p2,*p3,*p4,*p5; int i,j; static int n=0; static int score; static int left=20; char sscore[5]; char sleft[1]; p2=p1=head; while(p1!=NULL) { p1=p1->next; if(p1->next==NULL) {a=p1->newx; b=p1->newy; /************记录最后节点的坐标************/ sx=a; sy=b; } p1->newx=p2->centerx; p1->newy=p2->centery; p2=p1; } p1=head; while(p1!=NULL) {p1->centerx=p1->newx; p1->centery=p1->newy; p1=p1->next; } /********判断按键方向*******/ if(bioskey(1)) { ch=bioskey(0); if(ch!=RIGHT&&ch!=LEFT&&ch!=UP&&ch!=DOWN&&ch!=ESC) /********chy为上一次的方向*********/ ch=chy; } switch(ch) { case LEFT: if(control!=4) {head->newx=head->newx-22; head->centerx=head->newx; control=2; if(head->newx<47) gameover(); } else { head->newx=head->newx+22; head->centerx=head->newx; control=4; if(head->newx>377) gameover(); } chy=ch; break; case DOWN: if(control!=1) { head->newy=head->newy+22; head->centery=head->newy; control=3; if(head->newy>377) gameover(); } else { head->newy=head->newy-22; head->centery=head->newy; control=1; if(head->newy<47) gameover(); } chy=ch; break; case RIGHT: if(control!=2) { head->newx=head->newx+22; head->centerx=head->newx; control=4; if(head->newx>377) gameover(); } else { head->newx=head->newx-22; head->centerx=head->newx; control=2; if(head->newx<47) gameover(); } chy=ch; break; case UP: if(control!=3) { head->newy=head->newy-22; head->centery=head->newy; control=1; if(head->newy<47) gameover(); } else { head->newy=head->newy+22; head->centery=head->newy; control=3; if(head->newy>377) gameover(); } chy=ch; break; case ESC: flag=1; break; } /* if 判断是否吃蛇*/ if(flag!=1) { if(head->newx==scenterx&&head->newy==scentery) { p3=head; while(p3!=NULL) { p4=p3; p3=p3->next; } p3=(struct snake *)malloc(sizeof(struct snake)); p4->next=p3; p3->centerx=a; p3->newx=a; p3->centery=b; p3->newy=b; p3->next=NULL; a=500; b=500; putimage(409,62,far4,COPY_PUT); /********** 分数框挡住**************/ putimage(500,62,far4,COPY_PUT); /*********把以前的剩下虫子的框挡住********/ score=(++n)*100; left--; itoa(score,sscore,10); itoa(left,sleft,10); setcolor(RED); outtextxy(415,70,sscore); outtextxy(512,70,sleft); nextshow=1; if(left==0) /************判断是否过关**********/ donghua(); /*******如果过关，播放过关动画*********************/ } p5=head; /*********************判断是否自杀***************************/ p5=p5->next; p5=p5->next; p5=p5->next; p5=p5->next; /****从第五个节点判断是否自杀************/ while(p5!=NULL) {if(head->newx==p5->centerx&&head->newy==p5->centery) { gameover(); break; } else p5=p5->next; } } } /************snakechange()函数结束*******************/ /*****************************主函数******************************************/ int main() { int i; init(); /**********初始化图形系统**********/ welcome(); /*********8欢迎界面**************/ bort(); /*********主场景***************/ snakede(); /**********连表初始化**********/ while(1) { snakechange(); if(flag==1) break; snakepaint(); ran(); for(i=0;i<=grade;i++) delay(3000); } free(far1); free(far2); free(far3); free(far4); closegraph(); return 0; }