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C語言實現貪吃蛇游戲

發布時間:2020-08-19 21:22:15 來源:腳本之家 閱讀:115 作者:Johnny_Law 欄目:編程語言

最近整理下電腦,看到了自己在上個學期打的貪吃蛇游戲的c代碼,覺得真的是略微有點冗長,但是實現起來應該也算是比較好理解,于是把自己的代碼搬上來,網絡上寫貪吃蛇的c語言的文章很多,我這篇也僅是給大家作為一個參考而已。

我的代碼是在Windows下運行的,因為需要用到windows.h這個庫。

然后也做了一個簡單的ai模式,這在沒有障礙物的情況下前期還是蠻不錯的,但是到了后期蛇變長了之后就會有bug了。
好了,直接上代碼吧:

1)頭文件和宏定義

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#include<conio.h>
#include<windows.h>

#define SNAKE_MAX_LENGTH 20
#define SNAKE_HEAD 'H'
#define SNAKE_BODY 'X'
#define BLANK_CELL ''
#define SNAKE_FOOD '$'
#define WALL_CELL '*'

2)各種實現函數的聲明

/*snake stepping: dy = -1(up) 1(dowm) 0(no move); dx = -1(left), 1(right), 0(no move)*/
void snakemove(int, int); 
//to write dowm the current location of the snake 
void put_money(void); 
void output(void);
 // to put the current map on the screen
void initial_the_game(void);
void put_accelerate(void);
// @ is a special food which can speed up your snake.
int judge(int, int); 
/* when it comes to ai, it is used to judge whether the next step is movable. */
int dis(int, int); 
// when it coomes to ai, it is used to calculate the current distence //between the snake head and the food.
void welcome(void); // the game introduction.
void gameover(void); 
void edition_handed(void); 
// the edition in which you can play by yourself.
void edition_presentation(void); 
// the edition in which the snake can go automatically.

3)各種全局變量

// define vars for snake,notice name of vars in c 
int snakeX[SNAKE_MAX_LENGTH] = {1, 2, 3, 4, 5};
int snakeY[SNAKE_MAX_LENGTH] = {1, 1, 1, 1, 1};
int snakeLength = 5;
int gamestate = 1;
int current_speed = 600;
int score = 0;
char edition_choose; // for player to choose the edition.
int con = 1; // to judge the initial state of the game;
int energy = 0; // write down the condition to accelerate by eating $.

//the following part is to realize the simple ai .
const char movable[4] = {'a', 'd', 's', 'w'};
int distance[4] = {9999, 9999, 9999, 9999};
int fx = 6, fy = 6; // the coordinate of the food $

4)地圖

char map[12][12] = 
 {"************",
 "*XXXXH *",
 "*  *",
 "*  *",
 "*  *",
 "*  *",
 "* $ *",
 "*  *",
 "* @ *",
 "*  *",
 "*  *",
 "************"};

5)主函數(可選模式)

int main() {
 while (con) {
 welcome();
 int flag = 1;
 while (flag) {
  edition_choose = getch(); //choose the edition
  if (edition_choose == 'h') {
  edition_handed();
  flag = 0;
  }
  else if (edition_choose == 'p') {
  edition_presentation();
  flag = 0;
  }
  else {
  printf("Please press the correct bottom -,- ...\n");
  }
 }
 gameover();
 } 
 return 0;
}

6)手動模式實現

void edition_handed(void) {
 system("cls");
 output();
 char ch = 'd';
 while (gamestate) {
 switch (ch) {
  case 'a': // go left
  while (1) {
   snakemove(-1, 0);
   Sleep(current_speed);
   if (gamestate == 0) // to break the loop if the snake hit the wall or itself.
   break;
   if (kbhit() != 0) { // to change the direction
   ch = getch();
   if (ch == 's' || ch == 'w')
   break;
   else 
   ch = 'a';
   }
  }
  break;
  case 'd': // go right
  while (1) {
   snakemove(1, 0);
   Sleep(current_speed);
   if (gamestate == 0)
   break;
   if (kbhit() != 0)
   ch = getch();
   if (ch == 's' || ch == 'w')
   break;
   else 
   ch = 'd';
  } 
  break;
  case 's': // go down
  while (1) {
   snakemove(0, 1);
   Sleep(current_speed);
   if (gamestate == 0)
   break;
   if (kbhit() != 0)
   ch = getch();
   if (ch == 'a' || ch == 'd')
   break;
   else 
   ch = 's';
  }
  break;
  case 'w': // go up
  while (1) {
   snakemove(0, -1);
   Sleep(current_speed);
   if (gamestate == 0)
   break;
   if (kbhit() != 0)
   ch = getch();
   if (ch == 'a' || ch == 'd')
   break;
   else 
   ch = 'w';
  }
  break;
 }
 if (gamestate == 0)
  break;
 } 
 return;
}

7)自動模式實現

void edition_presentation(void) { // for ai
 system("cls");
 int i, min = 10000;
 output();
 char ch;
 char quit = 'o';
 int k;
 while (gamestate) { // find the shortest way;
 min = 10000;
 if (judge(-1, 0)) distance[0] = dis(-1, 0);
 if (judge(1, 0)) distance[1] = dis(1, 0);
 if (judge(0, 1)) distance[2] = dis(0, 1);
 if (judge(0, -1)) distance[3] = dis(0, -1);
 for (i = 0; i < 4; i++) {
  if (min >= distance[i]) {
  min = distance[i];
  k = i;
  }
 }
 Sleep(current_speed);
 switch (movable[k]) {
  case 'a': // go left
  snakemove(-1, 0);
  break;
  case 'd': // go right
  snakemove(1, 0);
  break;
  case 's': // go down
  snakemove(0, 1);
  break;
  case 'w': // go up
  snakemove(0, -1);
  break; 
 }
 if (gamestate == 0)
  break;
 system("cls");
  output();
 }
 return;
}

8)其他輔助函數

歡迎界面

void welcome(void) { // just for some introduction
 printf("WELCOME TO THE SNAKE'S WORLD !!!!\n");
 printf("\n");
 printf("\n");
 printf("Please choose the edition you want.\n");
 printf("\n");
 printf("\n");
 printf("The 'h' is for the hand-operated and the 'p' is for the simple presentation\n");
 printf("\n");
 printf("\n");
 printf("Attention: the presentation still has a liitle bug, while it can be moving right for a period of time...\n ");
 return;
}

游戲結束界面

void gameover(void) { // give you some introduction when you lose the game.
 system("cls");
 printf("Game over!!!\n");
 printf("Do you want to continue? y or n\n");
 char start; // in order to judge whether you still want to play the game.
 while (1) {
 start = getch();
 if (start == 'y') {
  system("cls");
  initial_the_game();
  break;
 } else if (start == 'n') {
  system("cls");
  con = 0; // in order to let the game end.
  printf("See you next time! ^-^\n");
  break;
 } else {
  printf("Please press the correct buttom.\n");
 }
 }
}

圖像實現方式

void output(void) { // put the cuttent game map.
 printf("THE INTERESTING SNAKE GAME CREATED BY LONGJ =,=\n");
 printf("use w~s~a~d to control the snake's movement\n");
 printf("ATTENTION: the @ can speed up your lovely snake~~\n");
 int i, j;
 for (i = 0; i < 12; i++) {
 for (j = 0; j < 12; j++) { 
  printf("%c", map[i][j]);
  if (j == 11)
  printf("\n");
 }
 }
 printf("Your current_speed is %d\n", current_speed);
 printf("The number of your food undigested is %d (when it comes to 5, your speed will be accelerated!) \n", energy);
 printf("SCORE = %d\n", score);
 return;
}

蛇的行走實現

void snakemove(int dx, int dy) { // all the conditions are comparing the head and the next position.
 int i;
 if (snakeY[snakeLength - 1] + dy == snakeY[snakeLength - 2] && snakeX[snakeLength - 1] + dx == snakeX[snakeLength - 2])
 return; // to prevent it go to itslef.
 if (map[snakeY[snakeLength - 1] + dy][snakeX[snakeLength - 1] + dx] == 'X') {
 gamestate = 0;
 return;
 }
 if (map[snakeY[snakeLength - 1] + dy][snakeX[snakeLength - 1] + dx] == '*') {
 gamestate = 0;
 return;
 }
 if (map[snakeY[snakeLength - 1] + dy][snakeX[snakeLength - 1] + dx] == ' '
 || map[snakeY[snakeLength - 1] + dy][snakeX[snakeLength - 1] + dx] == '@') {
 map[snakeY[0]][snakeX[0]] = ' '; // clear the former_tail
 if (map[snakeY[snakeLength - 1] + dy][snakeX[snakeLength - 1] + dx] == '@'
 && current_speed > 100) { // what will happen when your snake eats the @
  current_speed -= 100;
  put_accelerate();
 }
 for (i = 0; i < snakeLength - 1; ++i) {
  snakeX[i] = snakeX[i + 1];
  snakeY[i] = snakeY[i + 1];
 }
 snakeX[snakeLength - 1] += dx;
 snakeY[snakeLength - 1] += dy;
 for (i = 0; i < snakeLength - 1; i++) // write down the current snake location
  map[snakeY[i]][snakeX[i]] = 'X';
 map[snakeY[snakeLength - 1]][snakeX[snakeLength - 1]] = 'H';
 }
 if (map[snakeY[snakeLength - 1] + dy][snakeX[snakeLength - 1] + dx] == '$') {
 map[snakeY[snakeLength - 1]][snakeX[snakeLength - 1]] = 'X';
 snakeLength++;
 snakeX[snakeLength - 1] = snakeX[snakeLength - 2] + dx;
 snakeY[snakeLength - 1] = snakeY[snakeLength - 2] + dy;
 map[snakeY[snakeLength - 1]][snakeX[snakeLength - 1]] = 'H';
 score++;
 energy++;
 if (energy == 5 && current_speed > 50) {
  current_speed -= 50;
  energy = 0;
 }
 put_money();
 }
 system("cls");
 output();
 return;
}

食物放置的實現

void put_money(void) { /// ai will change the code
 int flag = 1;
 while (flag) {
 srand(time(NULL));
 fx = rand() % 12;
 fy = rand() % 12;
 if (map[fy][fx] == ' ') {
  map[fy][fx] = '$';
  flag = 0;
 }
 if (edition_choose == 'p') {
  int i;
  for (i = 0; i< 4; i++)
  distance[i] = 9999;
 }
 }
 return;
}

void put_accelerate(void) {
 int x, y, flag = 1;
 while (flag) {
 srand(time(NULL));
 x = rand() % 12;
 y = rand() % 12;
 if (map[x][y] == ' ') {
  map[x][y] = '@';
  flag = 0;
 }
 }
 return;
}

ai輔助函數

int dis(int dx, int dy) {
 return abs(fx - snakeX[snakeLength - 1] - dx) + abs(fy - snakeY[snakeLength - 1] - dy);
}

int judge(int dx, int dy) {
 if (map[snakeY[snakeLength - 1] + dy][snakeX[snakeLength - 1] + dx] == ' ')
 return 1;
 else if (map[snakeY[snakeLength - 1] + dy][snakeX[snakeLength - 1] + dx] == '$')
 return 1;
 else if (map[snakeY[snakeLength - 1] + dy][snakeX[snakeLength - 1] + dx] == '@')
 return 1;
 else 
 return 0;
}

游戲over后的初始化函數:

void initial_the_game(void) {
 int i, j, count = 1;
 snakeLength = 5;
 gamestate = 1;
 fx = fy = 6;
 current_speed = 600;
 for (i = 0; i < 5; i++)
 snakeY[i] = 1;
 for (i = 0; i < 5; i++) {
 snakeX[i] = count++;
 }
 for (j = 0; j < 12; j++) {
 map[0][j] = '*';
 map[11][j] = '*';
 }
 for (i = 1; i < 11; i++) {
 map[i][0] = map[i][11] = '*';
 for (j = 1; j < 11; j++)
  map[i][j] = ' ';
 }
 map[fy][fx] ='$';
 map[8][4] = '@';
 for (i = 0; i< 4; i++) {
  distance[i] = 9999;
 }
 for (i = 0; i < 4; i++) 
 map[snakeY[i]][snakeX[i]] = 'X';
 map[snakeY[4]][snakeX[4]] = 'H';
 return;
}

小結:

不難看出,c語言代碼比較冗長,而且初始化的函數實現起來十分麻煩,稍有不慎就會全部出錯,導致游戲無法持續玩下去,博主當初寫的時候就是被坑了很久=_=

因而現在在學c++,希望以后把類的概念之類的東西都弄得更加熟練之后,可以去把這個冗長的c代碼改成更加簡潔,閱讀性更強的c++代碼。

(好的,已經更新了,寫出了一個比較簡單的C++貪吃蛇,的確是思路清晰很多,代碼的可讀性更高。)

這篇博客給那些想要用c來寫貪吃蛇的同學一些參考,運行起來是沒有問題的,可以選擇性看:)

以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持億速云。

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