C ++: Snake and Snake

C ++: Snake and Snake

1 # include <iostream> 2 # include <cstdio> 3 # include <cstdlib> 4 # include <ctime> 5 # include <conio. h> 6 using namespace std; 7 8 typedef struct {int x, y;} Point; 9 10 char map [22] [22]; // define a 22*22 map (including borders) 11 Point snake [400], food, Next; // define the position of snake, food, and Next snake head 12 int head, tail; // The subscript 13 int grade, length, and autotime used to store the snake head and tail; // the time required for the game level, snake length, and automatic forward 14 char direction; // forward direction 15 16 // use inline to define inline functions to save the call overhead during running 17 // Refresh the map 18 inline void Update (char map [] [22], int grade, int length, int autotime) 19 {20 system ("cls "); // clear screen 21 int I, j; 22 printf ("\ n"); 23 for (I = 0; I <22; I ++) 24 {25 printf ("\ t"); 26 for (j = 0; j <22; j ++) 27 printf ("% c ", map [I] [j]); 28 if (I = 0) 29 printf ("\ t level: % d", grade ); 30 if (I = 2) 31 printf ("\ t length: % d", length); 32 if (I = 6) 33 printf ("\ t automatic forward time"); 34 if (I = 8) 35 printf ("\ T interval: % d ms", autotime); 36 printf ("\ n"); 37} 38} 39 40 // welcome page 41 inline void hello () 42 {43 puts ("\ n \ t Snake game is about to begin! "); // Prepare to start 44 double start; 45 for (int I = 3; I> = 0; I --) 46 {47 start = (double) clock () /CLOCKS_PER_SEC; // obtain the program's current running time 48 while (double) clock ()/CLOCKS_PER_SEC-start <= 1 ); // after 1 second, 49 if (I> 0) 50 {51 system ("cls "); // clear screen 52 printf ("\ n \ t enter countdown: % d \ n", I ); // countdown 53} 54 else 55 Update (map, grade, length, autotime ); // refresh map 56} 57} 58 59 // randomly generated food location 60 inline void f () 61 {62 srand (Int (time (0); // call the seed function 63 do {64 food. x = rand () % 20 + 1; 65 food. y = rand () % 20 + 1; 66} while (map [food. x] [food. y]! = ''); 67 map [food. x] [food. y] = '! '; // The food is "!" 68} 69 70 // initialize 71 inline void init () 72 {73 int I, j; 74 for (I = 1; I <= 20; I ++) 75 for (j = 1; j <= 20; j ++) 76 map [I] [j] = ''; 77 for (I = 0; I <= 21; I ++) 78 map [0] [I] = map [21] [I] = map [I] [0] = map [I] [21] = '*'; // border 79 map [1] [1] = map [1] [2] = 'O'; // snake body (including snake tails) 80 map [1] [3] = '@'; // snake header 81 head = 2; tail = 0; // subscript of the header and tail 82 snake [head] at the start. x = 1; snake [head]. y = 3; // At the beginning, the subscript of the snake header on the map is 83 snake [tail]. X = 1; snake [tail]. y = 1; // The subscript 84 snake on the map at the beginning [1]. x = 1; snake [1]. y = 2; // The subscript 85 f () of the snake on the map at the beginning; // the random food location 86 grade = 1; length = 3; autotime = 500; // start level, length, and automatic forward time 87 ction = 77; // The initial direction of motion 88} 89 90 // pre-forward 91 inline int GO () 92 {93 bool timeover = true; 94 double start = (double) clock ()/CLOCKS_PER_SEC; // get the current running time of the program 95 96 // automatically enter 97 while (timeover = (double) clock () after 1 second or within 1 second () /CLOCKS_PER_SEC-start <= autotime/1000.0 ))&&! _ Kbhit (); 98 // enter 99 if (timeover) 100 {101 _ getch (); 102 direction = _ getch () on the keyboard (); // obtain the direction 103} 104 switch (direction) 105 {106 case 72: 107 Next. x = snake [head]. x-1; Next. y = snake [head]. y; // up 108 break; 109 case 80: 110 Next. x = snake [head]. x + 1; Next. y = snake [head]. y; // 111 break down; 112 case 75: 113 Next. x = snake [head]. x; Next. y = snake [head]. y-1; // 114 break to the left; 115 case 77: 116 Next. x = snake [head]. X; Next. y = snake [head]. y + 1; // 117 break to the right; 118 default: 119 puts ("\ tGame over! "); // Failed to press the arrow key 120 return 0; 121} 122 if (Next. x = 0 | Next. x = 21 | Next. y = 0 | Next. y = 21) // hit the boundary 123 {124 puts ("\ tGame over! "); 125 return 0; 126} 127 if (map [Next. x] [Next. y]! = ''&&! (Next. x = food. x & Next. y = food. y) // eat yourself 128 {129 puts ("\ tGame over! "); 130 return 0; 131} 132 if (length = 400) // The longest snake length is 133 {134 puts (" \ tGood game! "); 135 return 0; 136} 137 return 1; 138} 139 140 // 141 inline void EAT () 142 {143 length ++; // The length is increased by 1144 int _ grade = length/10 + 1; // The calculation level is 145 if (_ grade! = Grade) 146 {147 grade = _ grade; 148 if (autotime> = 100) 149 autotime = 550-grade * 50; // increase the first-level automatic time minus 50 milliseconds 150} 151 map [Next. x] [Next. y] = '@'; // The Position of the snake header changes by 152 map [snake [head]. x] [snake [head]. y] = 'O'; // The original head of the snake body changes to 153 head = (head + 1) % 400; // The subscripts of the snake header add 1154 snake [head]. x = Next. x; snake [head]. y = Next. y; // The subscripts of the snake header change by 155 f (); // a random 156 Update (map, grade, length, autotime) Food position is generated ); // refresh map 157} 158 159 // 160 inline void FAILURE () 161 {162 map [snake [tail]. x] [snake [tail]. y] = ''; // the original position of the snake tail is changed to" "163 tail = (tail + 1) % 400; // Add 1164 map [Next. x] [Next. y] = '@'; // The Position of the snake header changes by 165 map [snake [head]. x] [snake [head]. y] = 'O'; // The original head of the snake body changes to 166 head = (head + 1) % 400; // The subscripts of the snake header add 1167 snake [head]. x = Next. x; // The snake header subscript changes by 168 snake [head]. y = Next. y; 169 Update (map, grade, length, autotime); // refresh map 170} 171 172 // main function 173 int main () 174 {175 init (); // initialize 176 hello (); // Welcome Page 177 while (1) 178 {179 if (GO () // pre-forward 180 {181 if (Next. x = food. x & Next. y = food. y) 182 EAT (); // food 183 else184 FAILURE (); // food 185} 186 else187 return 0; // failed or victory, game ended 188} 189 return 0; 190} 191 //