Final

#include <bits/stdc++.h>
#include <conio.h>
#include "game.h"
using namespace std;
#define pii pair<int,int>
#define F first
#define S second
#define UP 72
#define DOWN 80
#define LEFT 75
#define RIGHT 77
#define function_key 224
#define CPS (double)(CLOCKS_PER_SEC)
pii body[3005] , dot;
int dx[] = {0 , 0 , -1 , 1} , dy[] = {-1 , 1 , 0 , 0};
int die , len , way; // 0 -> up 1 -> down 2 -> left 3 -> right
clock_t time1 , time2;
struct str{
    int Len , Time;
    string name;
}S[7];
bool cmp(str a , str b){
    if(a.Len == b.Len) return a.Time < b.Time;
    else return a.Len > b.Len;
}
void init();
void gmstart();
int gminit();
void playinit();
void draw();
void drawsnake();
void drawinit();
void drawdot();
void play();
void mvsnake();
void isdie();
void hard();
void drawinfor();
void endgm();
void sortRK();
void RK();
int main(){
    init();
    while(1){
        gmstart();
        if(gminit() == 0) break;
    }
    return 0;
}
void init(){
    srand(time(NULL));
    SetCursorVisible(0 , 25);
}
void gmstart(){
    system("CLS");
    SetColor(3 , 0);
    gotoxy(27 , 3);
    cout << "Press S to start the game";
    gotoxy(27 , 4);
    cout << "Press E to  end  the game";
    gotoxy(27 , 5);
    cout << "Press R to check the rank";
}
int gminit(){
    time1 = clock();
    char ch = getch();
    ch = tolower(ch);
    if(ch == 'e') return 0;
    if(ch == 's'){
        playinit();
    }
    if(ch == 'r') RK();
    return 1;
}
void playinit(){
    system("CLS");
    way = 3;
    die = 0;
    len = 4;
    draw();
    while(!die) play();
    endgm();
}
void draw(){
    string s;
    fstream file;
    gotoxy(0 , 0);
    file.open("snakemap.txt" , ios::in);
    while(file >> s){
        int len = s.length();
        for(int i = 0; i < len; i++){
            if(s[i] == '1'){
                SetColor(7 , 2);
                cout << "  ";
            }
            else{
                SetColor(0 , 0);
                cout << "  ";
            }
        }
        cout << endl;
    }
    drawsnake();
    drawdot();
}
void drawsnake(){
    gotoxy(3 , 10);
    SetColor(5 , 0);
    cout << "*****O";
    for(int i = 0; i < 5; i++){
        body[i].F = 6 - i;
        body[i].S = 10;
    }
}
void drawdot(){
    SetColor(11 , 0);
    dot.F = rand() % 73 + 4;
    dot.S = rand() % 24 + 1;
    for(int i = 0; i < len; i++)
        while(dot.F == body[i].F && dot.S == body[i].S){
            dot.F = rand() % 73 + 4;
            dot.S = rand() % 15 + 4;
        }
    gotoxy(dot.F , dot.S);
    cout << "#";
}
void play(){
    if(kbhit()){
        int ch = getch();
        if(ch == 224){
            int chh = getch();
            switch(chh){
                case UP: if(way != 1) way = 0; break;
                case DOWN: if(way != 0) way = 1; break;
                case LEFT: if(way != 3) way = 2; break;
                case RIGHT: if(way != 2) way = 3; break;
            }
        }
    }
    mvsnake();
    isdie();
    hard();
    drawinfor();
}
void mvsnake(){
    SetColor(13 , 0);
    for(int i = ++len; i >= 1 ; i--)
        body[i] = body[i - 1];
    body[0].F += dx[way];
    body[0].S += dy[way];
    gotoxy(body[0].F , body[0].S); cout << "O";
    gotoxy(body[1].F , body[1].S); cout << "X";
    if(body[0].F != dot.F || body[0].S != dot.S){
        len--;
        gotoxy(body[len].F , body[len].S);
        cout << " ";
    }
    else drawdot();
}
void isdie(){
    for(int i = 1; i <= len; i++)
        if(body[0].F == body[i].F && body[0].S == body[i].S) die =  1;
    if(body[0].F < 2 || body[0].F > 77) die = 1;
    if(body[0].S < 1 || body[0].S > 24) die = 1;
}
void hard(){
    int sleep = 220;
    for(int i = 0; i < len; i += 3)
        sleep -= 10;
    if(way > 1) sleep -= 20;
    sleep = max(12 , sleep); 
    Sleep(sleep);
}
void drawinfor(){
    SetColor(15 , 0);
    gotoxy(81 , 24);
    cout << " LEN : " << len << endl;
    gotoxy(81 , 25);
    time2 = clock();
    cout << "TIME : " << (time2 - time1) / CPS;
}
void endgm(){
    system("CLS");
    gotoxy(25 , 10);
    SetColor(5 , 0);
    cout << "Name : ";
    cin >> S[0].name;
    S[0].Len = len;
    S[0].Time = (time2 - time1) / CPS;
    sortRK();
}
void sortRK(){
    fstream file , file2;
    file.open("snakeRK.txt" , ios::in);
    for(int i = 1; i <= 5; i++)
        file >> S[i].name >> S[i].Len >> S[0].Time;
    sort(S , S + 6 , cmp);
    file2.open("snakeRK.txt" , ios::out | ios::trunc);
    for(int i = 0; i < 5; i++)
        file2 << S[i].name << S[i].Len << S[i].Time;
}
void RK(){
    system("CLS");
    SetColor(15 , 0);
    fstream file;
    file.open("snakeRK.txt" , ios::in);
    gotoxy(25 , 2);
    cout << "             name" << "  " << "length" << "  " << "time";
    for(int k = 0; k < 5; k++){
        string s1 , s2 , s3;
        file >> s1 >> s2 >> s3;
        cout << "#" << k + 1 << " ";
        for(int i = 0; i < 15 - s1.length(); i++) cout << " ";
        cout << s1 << "  ";
        for(int i = 0; i < 3 - s2.length(); i++) cout << " ";
        cout << s2 << "  ";
        for(int i = 0; i < 4 - s3.length(); i++) cout << " ";
        cout << s3;
    }
}