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code.cpp
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code.cpp
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#include<bits/stdc++.h>
#include<conio.h>
#include <windows.h>
using namespace std;
bool gameOver;
const int width=20;
const int height=20;
int x,y,fruitX,fruitY,score;
//direction
enum eDirection{STOP=0,LEFT,RIGHT,UP,DOWN};
eDirection dir;
int tailX[100],tailY[100];
int nTail;//size of tail
void setup()
{
gameOver=false;
//direc stop so that snake wont move until we make it
dir=STOP;
x=width/2;//middle
y=height/2;//for snake head to be at center
//po of fruit at any random pos
fruitX=rand()%width;//within the width of the game
fruitY=rand()%height;
score=0;
}
void draw()
{
//draw a map
//first clear the screen
system("cls");
//for top wall
for(int i=0;i<width;i++)
{
cout<<"*";
}
cout<<endl;
for(int i=0;i<height;i++)
{
for(int j=0;j<width;j++)
{
if(j==0)//if first make wall we dont need for inside
cout<<"*";
if(i==y&&j==x)
{
cout<<"O";
}
else if(i==fruitY && j==fruitX)
cout<<"F";
else
{bool print=false;
for(int k=0;k<nTail;k++)
{
if(tailX[k]==j&& tailY[k]==i)
{
cout<<"O";
print=true;
}
}
if(!print)
cout<<" ";
}
if(j==width-1)
cout<<"*";
}
cout<<endl;
}
//for bottom wall
for(int i=0;i<width+2;i++)
{
cout<<"*";
}
cout<<endl;
cout<<"Score:"<<score<<endl;
}
//keyboard input:
//w->up
//a d->left and right respectively
// s ->down
void Input()
{
//conio for getting character from console window
//kbhit willl handle the user input from the keyboard
//use switch case for different keyboard actions
if(_kbhit())
{
switch (_getch())
{
case 'a':
dir=LEFT;
break;
case 'd':
dir=RIGHT;
break;
case 'w':
dir=UP;
break;
case 's':
dir=DOWN;
break;
case 'x':
gameOver=true;
break;
}
}
}
void logic()
{
int prevX=tailX[0];int prevY=tailY[0];
int prev2x,prev2y;
tailX[0]=x;tailY[0]=y;
for(int i=1;i<nTail;i++)
{
prev2x=tailX[i];
prev2y=tailY[i];
tailX[i]=prevX;
tailY[i]=prevY;
prevX=prev2x;
prevY=prev2y;
}
switch(dir)
{
case LEFT:
x--;//dec the x cordinate by 1 of snake
break;
case RIGHT:
x++;//increase the x coordinate of snake
break;
case UP:
y--;
break;
case DOWN:
y++;
break;
default:
break;
}
//condition if it hits the boundary then game over
if(x>width || x<0||y>height ||y<0)
{
gameOver=true;
}
for(int i=0;i<nTail;i++)
{
if(tailX[i]==x && tailY[i]==y)
gameOver=true;
}
//increase the score when eat the fruit
if(x==fruitX && y==fruitY)
{
score+=10;//incr score
//after score inc again place fruit random anywhere
fruitX=rand()%width;//within the width of the game
fruitY=rand()%height;
nTail++;
}
}
int main()
{
setup();
while(!gameOver)
{
draw();
Input();
logic();
Sleep(10);//slow the game if you want
}
}