C + + Implementation of snake game detailed steps and practical demonstrations

Learning C + + process to do a small program, relatively simple, only to achieve the most basic functions of the snake game. Upload code as a record of learning, but also for other students to provide as a small reference. The implementation environment is: Microsoft Visual c++6.0 integrated development environment.

#include <iostream> #include <cmath> #include <cstdlib> #include <cstdio> #include <ctime > #include <conio.h> #include <windows.h>using namespace std;/* cursor positioning */handle hout = GetStdHandle (std_ Output_handle); COORD coord;void Locate (int x, int y) {COORD. X = Y;coord. Y = x; SetConsoleCursorPosition (Hout,coord);};/ * Cursor Hide */void hide () {Console_cursor_info cursor_info = {1,0};//bvisible=0; hide Cursor Setconsolecursorinfo (Hout, &cursor_ Info)//Get cursor state}/* generate random number */double (double start, double end) {return start + (End-start) *rand ()/(rand_max+1.0);// Generates a number, greater than or equal to start, less than end;}/* defines the length and width of the map */int m, n;/* defines the snake's lengths, coordinates, directions, location of the food */struct node{int x, y; snake[1000];//snake coordinates int snake_length, dir;//snake length, direction node Food;int direct[4][2] = {{ -1,0}, {1,0}, {0,-1}, {0,1}};//location of food/* output Out of the fence: a rectangular box */void Print_wall () {//Output First line "----------" cout << ""; for (int i = 1; I <= N; i++) {cout << "-";} cout << endl;//Output first column "|", middle input space, last column output "|" for (int j = 0; J <= M-1; j + +) {cout << "|"; for (int i = 1; I <= N; i++) cout << ""; cout << "|" << Endl;} cout << "";//Output The last line "----------" for (int i = 1; I <= n; i++) cout << "-";} /* First output snake, where snake[0] represents the outer shape of the head *///snake: "@*****" void Print_snake () {locate (SNAKE[0].X,SNAKE[0].Y); cout << "@"; for (int i = 1; i < snake_length-1; i++) {Locate (snake[i].x, snake[i].y); cout << "*";}} /* Determine if hitting the wall or if the head touches any part of the body, the game fails */bool Is_correct () {if (snake[0].x = = 0 | | snake[0].y = 0 | | snake[0].x = m + 1 | | snak E[0].y = = n + 1) return false;//head touches edge for (int i = 1; I <= snake_length-1; i++) if (snake[0].x = snake[i].x &&am  P Snake[0].y = = snake[i].y) return false;//the head touches any part of the body return true; /* Randomly generated food location */bool Print_food () {srand (unsigned) time (0));//random seed bool E;while (1) {e = True;int i = (int) random (0,m) +1;int j = (int) random (0,n) +1;food.x = i; FOOD.Y = j;//Food location random for (int k = 0; k <= snake_length-1; k++)//food cannot appear anywhere in the body of the snake {if (snake[k].x = = Food.x &&amp  ;   Snake[k].y = = Food.y) {e= false; BReak; }}if (e) break;} Mark in place of food, food symbol "$"; locate (food.x,food.y); cout << "$"; return true; /* Snake advance */bool go_ahead () {node Tmp;bool e = false;tmp = snake[snake_length-1];//snake tail for (int i = snake_length-1; I >= 1;i --) {Snake[i] = snake[i-1];//move back one}snake[0].x + = Direct[dir][0];snake[0].y + direct[dir][1];locate (snake[1].x, snake[1 ].Y);//position to the back of the head cout << "*";/* Eat food */if (snake[0].x = = Food.x&&snake[0].y = food.y) {snake_length++;e = TRUE;SNAKE[SNAKE_LENGTH-1] = tmp;} /* Output at this time Snake state */if (!e) {Locate (tmp.x, tmp.y); cout << "";} Elseprint_food (); Locate (snake[0].x, snake[0].y); cout << "@";/*** if self-collision ***/if (!is_correct ()) {System ("CLS"); cout << "You lose!" << Endl << "Length:" << snake_length << Endl;return false;} return true;} int main () {//Game tip: cout << "--------------------snake---------------------" << endl;cout << "Please enter two number first, Represents the size of the map. "<< endl;cout <<" Please note the window size to avoid dislocation. The recommended window is set to maximum. << endl;cout <&Lt Select the difficulty. Please enter 1 numbers in 1-10, 1 The simplest, 10 is the hardest "<< endl;cout <<" then enter the game screen, with the direction key control direction. Have a good game! "<< endl;cout <<"- ----------------------------------------------"<< endl;cin >> m >> n;if (M < | | | n < ten | | m&gt ; 25 | | N&GT;40) {cout << "ERROR" << endl;system ("pause"); return 0;} Input difficulty factor: 1-10;int hard;cin >> hard;if (hard <= 0 | |) {cout << "ERROR" << endl;system ("Pa Use "); return 0;}  Data initialization: Snake position, length, direction snake_length = 5;//length clock_t A, B;char ch;double hard_len;for (int i = 0; I <= 4; i++)//Location {snake[i].x = 1;snake[i].y = 5-i;} DIR = 3;//Direction//output original map, food and Snake system ("cls"), Hide ();p rint_wall ();p rint_food ();p rint_snake ();//at (0,m+2) out display length: Locate (M + 2 , 0); cout << "now Length:";//Start Game while (1) {/* difficulty increases with length increase */hard_len = (double) snake_length/(double) (m*n);/* Adjust time, The unit is ms*/a = Clock (), while (1) {b = clock (), if (b-a >= (int) (400-30 * Hard) * (1-SQRT (Hard_len))); Receives the direction of the keyboard input//https://blog.csdn.net/wenweimin/artiCle/details/105561if (_kbhit ()) {ch = _getch (); if (ch = = -32) {ch = _getch (); switch (CH) {case 72:if (dir = = 2 | | dir = = 3) di R = 0; Break;case 80:if (dir = = 2 | | dir = = 3) dir = 1; Break;case 75:if (dir = = 0 | | dir = = 1) dir = 2; Break;case 77:if (dir = = 0 | | dir = = 1) dir = 3; Break;}}} Forward if (!go_ahead ()) break;//output at this time locate (M + 2, n); cout << snake_length;} System ("pause"); return 0;}