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#include <iostream>
#include <conio.h>
#include <windows.h>
using namespace std;
bool gameover;
const int width=40; // Width of map = 40
const int height=20; // Height of map = 20
int x, y, fruit_X, fruit_Y, score; // Variables for “head” position and for “fruit” position
int tail_X[100], tail_Y[100];
int tail;
enum directon {STOP=0, LEFT, RIGHT, UP, DOWN}; // Tracks direction of snake when button is pressed
directon d;
void Setup() // Game setup function
{
gameover=false;
d=STOP;
x=width/2;
y=height/2;
fruit_X=rand() % width;
fruit_Y=rand() % height;
score=0;
}
void Draw() // Map setup function
{
system("cls");
for (int i=0; i<width+2; i++) // Displays top border of map
cout << "*"; // Character used
cout << endl;
for (int i=0; i<height; i++) // Loop for sides of map
{
for (int j=0; j<width; j++)
{
if (j==0) // If j = 0, print first *
cout << "*"; // Character used
if (i==y && j==x)
cout << "D";
else if (i==fruit_Y && j==fruit_X)
cout << "o";
else
{
bool print=false;
for (int k=0; k<tail; k++) // Loop to display tail
{
if (tail_X[k]==j && tail_Y[k]==i)
{
cout << "o";
print=true;
}
}
if (!print)
cout << " ";
}
if (j==width-1) // If j = -1, print last *
cout << "*"; // Character used
}
cout << endl;
}
for (int i=0; i<width+2; i++) // Displays bottom border of map
cout << "*"; // Character used
cout << endl;
cout << "Score:" << score << endl; // displays score
}
void Input() // Character and direction setup function
{
if (_kbhit()) // <conio.h>
{
switch (_getch())
{
case 'a': // If a is pressed, move left
d=LEFT;
break;
case 'd': // If d is pressed, move right
d=RIGHT;
break;
case 'w': // If w is pressed, move up
d=UP;
break;
case 's': // If s is pressed, move down
d=DOWN;
break;
case 'o': // If o is pressed, terminate game
gameover=true;
break;
}
}
}
void Logic()
{
int prev_X=tail_X[0]; // Previous x coordinate of tail
int prev_Y=tail_Y[0]; // Previous y coordinate of tail
int prev2_X, prev2_Y;
tail_X[0]=x;
tail_Y[0]=y;
for (int i=1; i<tail; i++) // Loop for tail
{
prev2_X=tail_X[i];
prev2_Y=tail_Y[i];
tail_X[i]=prev_X;
tail_Y[i]=prev_Y;
prev_X=prev2_X;
prev_Y=prev2_Y;
}
switch (d)
{ case LEFT:
x--; // Decrease x coordinate of snake
break;
case RIGHT:
x++; // increase x coordinate of snake
break;
case UP:
y--; // Decrease y coordinate of snake
break;
case DOWN:
y++; // increase y coordinate of snake
break;
default:
break;
}
if (x>width || x<0 || y>height || y<0) // If snake touches the borders, game over
gameover=true;
for (int i=0; i<tail; i++)
if (tail_X[i]==x && tail_Y[i]==y) // If snake touches the tail, game over
gameover=true;
if (x==fruit_X && y==fruit_Y) // If fruit is “eaten”, add 10
{
score+=10;
fruit_X= rand() % width;
fruit_Y= rand() % height;
tail++;
}
}
int main()
{
Setup();
while (!gameover) // While game_over is false, run Draw, Input, Logic
{
Draw();
Input();
Logic();
Sleep(10); // Slows game down (Number can be changed or removed to change the speed that the snake moves at, making it more or less challenging)
}
return 0;
}
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