C语言实现贪吃蛇

  1 #include<stdio.h>
  2 #include<graphics.h>
  3 #include<stdlib.h>
  4 #include<conio.h>
  5 #include<time.h>
  6 
  7 #define N 200
  8 int i, key;
  9 int score = 0;
 10 int gamespeed = 500;
 11 
 12 void init(void);
 13 void Draw();
 14 void Playgame();
 15 void Prscore();
 16 void Gameover();
 17 
 18 struct Food {
 19     int x;
 20     int y;
 21     int yes;
 22 }food;
 23 
 24 struct Snake{
 25     int x[N];
 26     int y[N];
 27     int node;
 28     int direcion;
 29     int life;
 30 }snake;
 31 
 32 void main()
 33 {
 34     init();
 35     Draw();
 36     Playgame();
 37     _getch();
 38 }
 39 
 40 void init(void)
 41 {
 42     initgraph(640,480);
 43     setbkcolor(WHITE);
 44     cleardevice();
 45 }
 46 
 47 void Draw()
 48 {
 49     setcolor(BLACK);
 50     for (i = 50; i <= 600; i += 10)
 51     {
 52         rectangle(i, 40, i + 10, 49);
 53         rectangle(i, 451, i + 10, 460);
 54     }
 55     for (i = 40; i <= 450; i += 10)
 56     {
 57         rectangle(50, i, 59, i + 10);
 58         rectangle(601, i, 610, i + 10);
 59     }
 60 }
 61 
 62 void Playgame()
 63 {
 64     srand((unsigned)time(NULL));//用时间做种，每次产生的随机数不一样。
 65     food.yes = 1;//1表示需要出现食物，0表示已有食物
 66     snake.life = 0;//0，活着，1 死亡
 67     snake.direcion = 1;
 68     snake.x[0] = 100; snake.y[0] = 100;
 69     snake.x[1] = 110; snake.y[1] = 100;
 70     snake.node = 2;
 71     Prscore();
 72     while (1)
 73     {
 74         while (!_kbhit())
 75         {
 76             if (food.yes == 1)
 77             {
 78                 food.x = rand() % 400 + 60;
 79                 food.y = rand() % 350 + 60;
 80                 while (food.x % 10 != 0)
 81                     food.x++;
 82                 while (food.y % 10 != 0)
 83                     food.y++;
 84                 food.yes = 0;
 85             }
 86             if (food.yes == 0)
 87             {
 88                 setcolor(RED);
 89                 rectangle(food.x, food.y, food.x + 10, food.y + 10);
 90             }
 91             for (i = snake.node - 1; i > 0; i--)
 92             {
 93                 snake.x[i] = snake.x[i - 1];
 94                 snake.y[i] = snake.y[i - 1];
 95             }
 96             switch (snake.direcion)
 97             {
 98             case 1:snake.x[0] += 10; break;
 99             case 2:snake.x[0] -= 10; break;
100             case 3:snake.y[0] -= 10; break;
101             case 4:snake.y[0] += 10; break;
102             }
103             for (i = 3; i < snake.node; i++)
104             {
105                 if (snake.x[i] == snake.x[0] && snake.y[i] == snake.y[0])
106                 {
107                     Gameover();
108                     snake.life = 1;
109                     break;
110                 }
111             }
112             if (snake.x[0]<55 || snake.x[0]>595 || snake.y[0]<55 || snake.y[0]>455)
113             {
114                 Gameover();
115                 snake.life = 1;
116             }
117             if (snake.life == 1)
118                 break;
119             if (snake.x[0] == food.x&&snake.y[0] == food.y)
120             {
121                 setcolor(BLACK);
122                 rectangle(food.x, food.y, food.x + 10, food.y + 10);
123                 snake.x[snake.node] = -20; snake.y[snake.node] = -20;
124                 snake.node++;
125                 food.yes = 1;
126                 score += 10;
127                 Prscore();
128             }
129             setcolor(GREEN);
130             for (i = 0; i < snake.node; i++)
131                 rectangle(snake.x[i], snake.y[i],snake.x[i] + 10, snake.y[i] + 10);
132             if (food.yes == 1)
133             {
134                 if (gamespeed >= 20)
135                     gamespeed -= 10;//　速度最大不超过
136             }
137 
138             Sleep(gamespeed);
139             setcolor(WHITE);
140             rectangle(snake.x[snake.node - 1], snake.y[snake.node - 1], snake.x[snake.node-1] + 10, snake.y[snake.node - 1] + 10);
141         }
142         if (snake.life == 1)
143             break;
144         switch (_getch())
145         {
146         case ‘w‘:
147         case ‘W‘:
148             if (snake.direcion != 4)
149             {
150                 snake.direcion = 3;
151             }
152             break;
153         case ‘d‘:
154         case ‘D‘:
155             if (snake.direcion != 2)
156             {
157                 snake.direcion = 1;
158             }
159             break;
160         case ‘a‘:
161         case ‘A‘:
162             if (snake.direcion != 1)
163             {
164                 snake.direcion = 2;
165             }
166             break;
167         case ‘s‘:
168         case ‘S‘:
169             if (snake.direcion != 3)
170             {
171                 snake.direcion = 4;
172             }
173             break;
174         }
175     }
176 }
177 
178 
179 void Prscore()
180 {
181     char str[10];
182     setfillstyle(SOLID_FILL, YELLOW);
183     bar(50, 15, 220, 35);
184     setcolor(6);
185     sprintf_s(str, "score:%d", score);
186     outtextxy(55, 20, str);
187 }
188 
189 void Gameover()
190 {
191     cleardevice();
192     setbkcolor(WHITE);
193     Prscore();
194     setcolor(RED);
195     settextstyle(20, 20, "楷体");
196     outtextxy(200, 200, "GAME OVER");
197     _getch();
198 }