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#include <iostream> // including required headers
#include <cstdlib>
#include <ctime>
#include <conio.h>
#include <windows.h>
#include <fstream>
#include <iomanip>
using namespace std;
//several functions for certain operations
void menu();
void game();
void controls(char s[][22],int temp[][22],int eating);
void credits();
void table(char s[][22],int score);
bool checkFood(char s[][22],int fx,int fy);
void spawnFood(char s[][22],int & fx,int & fy);
bool gameover(char s[][22],int temp[][22]);
void endgame(int score,int highscore);
void help();
void options();
void difficulty();
void pause();
int lenght; //several variables
char contr='n';
int chek[32][22];
double diff=0.5; //difficulty variable, how fast snake moves (default-normal(0.5 sec)
int main()
{
srand(time(0)); //seeding random numb gen
int i;
char sl; //selection variable
for(i=0;i<9999;i++)
{
if(i>0)
{
cout<<""<<endl;
cout<<"Do you want to play again ? [y/n] ";
cin>>sl;
if(sl=='y')
{
system("cls"); //clearing screen
goto start;
}
else goto quit;
}
start: //starting program
{
menu(); //showing menu screen
}
cin>>sl; //selections for playing,options and exit
if(sl=='1')
{
system("cls"); //clears screen
game(); //calling game function, starting game
i=1;
}
else if(sl=='2')
{
options();
system("cls");
goto start;
i=1;
}
else if(sl=='3') goto quit;
else
{
system("cls");
i=1;
goto start;
}
}
quit: //quits program
{
system("exit");
}
return 0;
}
void table(char s[][22],int score) //function for showing table (screen in which snake moves
{
int x=32; //i am using coordinates for displaying the table
int y=22;
int i,j;
for(i=0;i<y;i++)
{
for(j=0;j<x;j++)
{
if(j<(x-1)) cout<<s[j][i];
if(j==(x-1)) cout<<s[j][i]<<endl;
}
}
cout<<""<<endl;
cout<<"Your score: "<<score;
}
void game()
{
char s[32][22]; //a 2-dimensional array for storing all particles in the screen;
int temp[32][22]; //an array for numbering snake parts and storing them
int i,j,fx,fy,x,y,score=0,highscore=score; //several variables
double k;
int eating; //if snake eats food, this becomes 1, and snake gains lenght
//preparations for game: setting table borders
for(i=0;i<22;i++)
{
for(j=0;j<32;j++)
{
if(i==0 || i==21) s[j][i]='-';
if(i>0 && i<21) s[j][i]=' ';
if(j==0 || j==31) s[j][i]='|';
}
}
spawnFood(s,fx,fy); //calling food spawn function
for(y=1;y<21;y++)
{
for(x=1;x<31;x++)
{
temp[x][y]=0; //setting all the temp values to 0,
} //to see where snake parts are, and where nothing (0);
}
s[17][10]='o'; //finally, sets primary snake position. o is head.
s[16][10]='*';
s[15][10]='*';
temp[15][10]=3; //numbering snake parts
temp[16][10]=2;
temp[17][10]=1;
system("cls");
table(s,score); //calling table function to show a table
lenght=3; //snake primary lenght
while(true) //game starts
{
eating=0; //setting value to 0, because snake hasnt eaten anything
Sleep(diff*1000); //delaying some time, how fast snake moves depends on difficulty
if(kbhit()) //checking if some key is pressed
{
contr=getch(); //if pressed, getting info about that key. this is needed for snake controls
if(contr=='0') pause(); //if 0, pauses game
goto movemake; //starts making snake moves
}
else
{
goto movemake; //if no key is pressed, snake just moves
}
movemake:
{
for(x=1;x<31;x++) //a loop for checking where are snake parts
{
for(y=1;y<21;y++)
{
if(s[x][y]=='*')
{
chek[x][y]=1; //this is needed for checking if snake hits its tail or borders
}
else chek[x][y]=0;
}
}
if(checkFood(s,fx,fy)==true) //if snake eats something, some info needs to be sent for snake to gain lenght
{
eating=1;
score=score+1;
controls(s,temp,eating); //calling snake control and movement function
spawnFood(s,fx,fy);
}
else
{
controls(s,temp,eating); //snake only moves
}
if(gameover(s,temp)==true) goto gameEnd; //if snake has hit something, game terminates
else
{
goto LoopEnd;
}
}
LoopEnd: //when loop ends, screen clears, updated table and score shows
{
system("cls");
table(s,score);
if(score>highscore) highscore=score;
}
}
gameEnd:
{
endgame(score,highscore); //calls endgame screen
return; //returns to int main
}
}
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