贪吃蛇（设计思路+源代码+详细注释+易于理解的命名+效果图）.pdf-资料库

贪吃蛇游戏 C 语言 VC++6.0 制作 2018-8-13，sjl 原创作品较粗略的游戏设计思路蛇移动： 1. 游戏介绍 2. 开始游戏：生成蛇的生存区域，生成 1 节蛇，生成 1 份食物，循环如下进程：画地图、食物、蛇 3. 游戏结束初始方向，随机，玩家修改方向，判断蛇头触碰到什么：食物，吃掉，分数加 1，蛇长加 1，自己的某一节身体，断节，游戏结束生活区域外空间，无法生存，游戏结束吃得太饱，生存空间容不下，游戏结束游戏效果图 1

详细的易于理解的游戏源代码 //time() //srand(), rand(), exit() /********** Some comments are hidden **********/ # include # include //system("cls"), Sleep() # include //kbhit(), getch() # include # include # define MAP_RANGE 12 //map range # define SNAKE_LENGTH (MAP_RANGE - 2) * (MAP_RANGE - 2) //snake length # define SNAKE_DEFAULT_VALUE 13 //snake array default value /********** structures **********/ typedef struct Map { int point[MAP_RANGE][MAP_RANGE]; }MAP; typedef struct Point { int x; int y; }POINT_XY; typedef struct SNode { POINT_XY body[SNAKE_LENGTH-2]; POINT_XY head; POINT_XY tail; int len; }SNAKE; typedef struct Food { POINT_XY point; }FOOD; /********** buildBorder **********/ void buildBorder(MAP * map) { int x, y; 2

for (x=0; xpoint[0][x] = -1; map->point[MAP_RANGE-1][x] = -1; } for (y=1; ypoint[y][0] = -1; map->point[y][MAP_RANGE-1] = -1; } } /********** initialize **********/ void initialize(POINT_XY * oldTail, char * dir, MAP * map, SNAKE * snake, FOOD * food, int * score, int * speed) { int x, y, i; int tmp; oldTail->x = oldTail->y = 0; *dir = 'a'; //initialize map contents for (y=0; ypoint[y][x] = 0; buildBorder(map); //initialize contents of snake for (i=0; ibody[i].x = SNAKE_DEFAULT_VALUE; snake->body[i].y = SNAKE_DEFAULT_VALUE; } snake->len = 1; //initialize position of snake head and tail tmp = MAP_RANGE - MAP_RANGE / 3 + 1; snake->head.x = tmp; 3

snake->head.y = tmp; snake->tail = snake->head; //initialize food position food->point.x = MAP_RANGE / 4; food->point.y = MAP_RANGE / 4; //initialize score and speed *score = 0; *speed = 10; } /********** gameTips **********/ void gameTips(int * gameStats) { char choose = 'z'; //game tips printf("-> Greedy Snake\n"); printf("-> The rules, as you now.\n"); printf("-> Control keys: a d w s\n"); printf("-> More control: 'q' to quit.\n"); printf("-> Goal: eat more, life longer.\n"); printf("-> Play? (space /others)"); //as a start play button do { choose = getch(); if (choose == 'q') exit(0); }while(choose != ' '); *gameStats = 1; } /********** createFood **********/ void createFood(SNAKE * snake, FOOD * food) { int x, y; int i; int inBody; //double not, means build 4

do { inBody = 0; x = 1 + (rand() % (MAP_RANGE-2)); //random from 1 to 10 y = 1 + (rand() % (MAP_RANGE-2)); //not in body, //but if young enough and no gowth body, we do not consider this for (i=0; i < snake->len - 2; i++) if (snake->body[i].x == x && snake->body[i].y == y) inBody++; //not in head and tail if (!inBody && (snake->tail.x != x && snake->tail.y != y) && (snake->head.x != x && snake->head.y != y)) break; }while(1); food->point.x = x; food->point.y = y; } /********** eatFood **********/ void eatFood(int snakeLen, int * score, int * speed) { //update score *score += (snakeLen / 10 + 1); //update speed if (snakeLen % 10 == 0) *speed += 10; } /********** growthUp **********/ void growthUp(SNAKE * snake, POINT_XY * oldTail) { //if it is food, snake growth up snake->len++; if (snake->len > 2) snake->body[snake->len-3] = snake->tail; 5

snake->tail.x = oldTail->x; snake->tail.y = oldTail->y; } /********** judgeTouch **********/ void judgeTouch(int * gameStats, SNAKE * snake, POINT_XY * oldTail, FOOD * food, int * score, int * speed) { int i; //if get out of border, stop game if (snake->head.x == 0 || snake->head.y == 0 || snake->head.x == MAP_RANGE-1 || snake->head.y == MAP_RANGE-1) *gameStats = 0; //if touch food, eat it, growth up, and create another one if (snake->head.x == food->point.x && snake->head.y == food->point.y) { eatFood(snake->len, score, speed); growthUp(snake, oldTail); //if a giant snake filled the whole map, not place to set food if (snake->len == SNAKE_LENGTH) { *gameStats = 0; food->point.x = 0; food->point.y = 0; printf("You did it!\n"); } else createFood(snake, food); } //if eat snake own for (i=0; ilen-2; i++) if (snake->head.x == snake->body[i].x && snake->head.y == snake->body[i].y) *gameStats = 0; if (snake->len > 1 && snake->head.x == snake->tail.x && snake->head.y == snake->tail.y) *gameStats = 0; } 6

/********** snakeMove **********/ void snakeMove(int * gameStats, POINT_XY * oldTail, SNAKE * snake, char * dir, FOOD * food, int * score, int * speed) { int i; int len = snake->len; int growth = 0; //get old tail position oldTail->x = snake->tail.x; oldTail->y = snake->tail.y; //move body and tail if (snake->len > 2) { snake->tail = snake->body[len-3]; for (i=len-3; i>0; i--) snake->body[i] = snake->body[i-1]; snake->body[0] = snake->head; } else if (snake->len == 2) snake->tail = snake->head; //move head //if press key to choose direction, modify dir if (kbhit()) *dir = getch(); switch (*dir) { case 'a': snake->head.x--; break; case 'd': snake->head.x++; break; case 'w': snake->head.y--; break; case 's': snake->head.y++; break; case 'q': exit(0); break; default: break; } if (snake->len == 1) snake->tail = snake->head; //guess head touch what judgeTouch(gameStats, snake, oldTail, food, score, speed); 7

} /********** updateMap **********/ void updateMap(MAP * map, POINT_XY snakeHead, POINT_XY oldTail, FOOD food) { //remove old tail map->point[oldTail.y][oldTail.x] = 0; //add snake head to map map->point[snakeHead.y][snakeHead.x] = 2; //add food to map, while food is present if (food.point.x != 0 && food.point.y != 0) map->point[food.point.y][food.point.x] = 1; } /********** showOnScreen **********/ void showOnScreen(MAP map, int score, int speed) { int x, y; for (y=0; y

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贪吃蛇（设计思路+源代码+详细注释+易于理解的命名+效果图）.pdf

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