C++ Tutorial 18 - Simple Snake Game (Part 1)

C++ Tutorial 18 - Simple Snake Game (Part 1)

Welcome to my simple game tutorial on C++. In this tutorial i will going to show you how to make a fun snake game.

We will structure the code of the game and do some basic drawing in the console.

Source code:
Download link for visual studio 2012 express:

Great C++ books that I recommend for beginners:
C++ Without Fear: A Beginner's Guide That Makes You Feel Smart (3rd Edition)
C++ Primer Plus (6th Edition) (Developer's Library)
Programming: Principles and Practice Using C++ (2nd Edition)

If you have any questions I'll be glad to answer, please leave a comment on the video.

Thanks for watching and please subscribe.

[dragonturd]

Tip for all new guys that are here. If you highlight a line of code, hold alt button and use Up/Down arrow keys to move the entire line

[pRsooeem]

"So if we run our programm we get something that's..not good...."

Bro, i feel you so much

[andtpfack]

easy to follow can recreate the code while the video is running. No useless bullshit just straight to the point, i love it. You earned yourself a sub !

[mr.mowgee]

tbh, im just here to see how the experts do it their own way, i'm a begginer at C++ and prolly noob.
but this video motivates me to learn and practice harder (since i'm self taught), now i realize i have a loooong way to go. and it makes me excited. 🔥

[dreamhollow]

I really appreciate this.
I know this tutorial is very old by now, but as someone who is just getting into C++ recently this has been very enlightening to me.
Thank you!

[theencube]

if c++ doesnt recognize rand include this: #include <cstdlib>

[cgme]

I haven't worked with game development in a long time. Thank you for making this video, even though it was over six years ago.
More than anything else, I liked that you assumed we knew the basics of programming. Explaining the basics wastes too much time.

[PaulBlxck]

This is going to be my first year project (and my first ever game) hopefully it works out. Thanks!

[rexmagotia]

Adding 2 units in the for loops to make the first and the last line of the map could be replaced with the <= in the for conditions.
Do this also in the j for loop

[jeydii]

this is the code #include <iostream>
#include <stdlib.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;
int tailX[100], tailY[100];
int nTail;
enum eDirecton { STOP = 0, LEFT, RIGHT, UP, DOWN};
eDirecton dir;
void Setup()
{
gameOver = false;
dir = STOP;
x = width / 2;
y = height / 2;
fruitX = rand() % width;
fruitY = rand() % height;
score = 0;
}
void Draw()
{
system("cls"); //system("clear");
for (int i = 0; i < width+2; i++)
cout << "#";
cout << endl;

for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
if (j == 0)
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 (int i = 0; i < width+2; i++)
cout << "#";
cout << endl;
cout << "Score:" << score << endl;
}
void Input()
{
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--;
break;
case RIGHT:
x++;
break;
case UP:
y--;
break;
case DOWN:
y++;
break;
default:
break;
}
//if (x > width || x < 0 || y > height || y < 0)
// gameOver = true;
if (x >= width) x = 0; else if (x < 0) x = width - 1;
if (y >= height) y = 0; else if (y < 0) y = height - 1;

for (int i = 0; i < nTail; i++)
if (tailX[i] == x && tailY[i] == y)
gameOver = true;

if (x == fruitX && y == fruitY)
{
score += 10;
fruitX = rand() % width;
fruitY = rand() % height;
nTail++;
}
}
int main()
{
Setup();
while (!gameOver)
{
Draw();
Input();
Logic();
Sleep(10); //sleep(10);
}
return 0;
}#include <iostream>
#include <stdlib.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;
int tailX[100], tailY[100];
int nTail;
enum eDirecton { STOP = 0, LEFT, RIGHT, UP, DOWN};
eDirecton dir;
void Setup()
{
gameOver = false;
dir = STOP;
x = width / 2;
y = height / 2;
fruitX = rand() % width;
fruitY = rand() % height;
score = 0;
}
void Draw()
{
system("cls"); //system("clear");
for (int i = 0; i < width+2; i++)
cout << "#";
cout << endl;

for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
if (j == 0)
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 (int i = 0; i < width+2; i++)
cout << "#";
cout << endl;
cout << "Score:" << score << endl;
}
void Input()
{
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--;
break;
case RIGHT:
x++;
break;
case UP:
y--;
break;
case DOWN:
y++;
break;
default:
break;
}
//if (x > width || x < 0 || y > height || y < 0)
// gameOver = true;
if (x >= width) x = 0; else if (x < 0) x = width - 1;
if (y >= height) y = 0; else if (y < 0) y = height - 1;

for (int i = 0; i < nTail; i++)
if (tailX[i] == x && tailY[i] == y)
gameOver = true;

if (x == fruitX && y == fruitY)
{
score += 10;
fruitX = rand() % width;
fruitY = rand() % height;
nTail++;
}
}
int main()
{
Setup();
while (!gameOver)
{
Draw();
Input();
Logic();
Sleep(10); //sleep(10);
}
return 0;
}#include <iostream>
#include <stdlib.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;
int tailX[100], tailY[100];
int nTail;
enum eDirecton { STOP = 0, LEFT, RIGHT, UP, DOWN};
eDirecton dir;
void Setup()
{
gameOver = false;
dir = STOP;
x = width / 2;
y = height / 2;
fruitX = rand() % width;
fruitY = rand() % height;
score = 0;
}
void Draw()
{
system("cls"); //system("clear");
for (int i = 0; i < width+2; i++)
cout << "#";
cout << endl;

for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
if (j == 0)
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 (int i = 0; i < width+2; i++)
cout << "#";
cout << endl;
cout << "Score:" << score << endl;
}
void Input()
{
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--;
break;
case RIGHT:
x++;
break;
case UP:
y--;
break;
case DOWN:
y++;
break;
default:
break;
}
//if (x > width || x < 0 || y > height || y < 0)
// gameOver = true;
if (x >= width) x = 0; else if (x < 0) x = width - 1;
if (y >= height) y = 0; else if (y < 0) y = height - 1;

for (int i = 0; i < nTail; i++)
if (tailX[i] == x && tailY[i] == y)
gameOver = true;

if (x == fruitX && y == fruitY)
{
score += 10;
fruitX = rand() % width;
fruitY = rand() % height;
nTail++;
}
}
int main()
{
Setup();
while (!gameOver)
{
Draw();
Input();
Logic();
Sleep(10); //sleep(10);
}
return 0;
}






yea that is pretty much it :)

[jatinnegi]

you can use logical or operator
if(j == 0 || j == width - 1)

[dariuschandra]

Thanks for the tutorial bro, it motivated me to learn more about C++

[i_inject_crayons]

i feel like these sort of tutorials are way better than "programming tutorials" because this guy actually shows us how to use th code we learn

[teodortodorov]

My brain: What did you just watch?
Me: Programming.
My Brain: So, what did you understand?
Me: Nothing

[polygonerror]

For anyone watching this, make sure that in your if statements that you use == to compare.
if (j = 0) is setting j to 0, not checking if it is 0
if (j == 0) checks if j's value is 0.

[JOAGOSTINI]

At this point, in order to obtain a real square 20x20 it is necessary
33. if (j>0 && j<19)
34. cout << " ";
I know you can do that, but I did it just to make the process accurate.

[kacperozieblowski]

Really simplified c++ to it's core. I like it

[milkyfilsen]

if you try to do this in newer versions, to put the constant rand you have to type after #include <iostream>, #include <csdtlib>

[Flyingsandwiches-nrzc]

Wow I'm taking up game design and I have a class on c++ and it's my first time ever learning about it. It's a little hard but I understand it. I'll learn as I go.

[brianscalabrine]

I know only code basics like what a variable or constant is; how to make a calculator and stuff like that but watching this and searching up the meanings of the terms really upgraded my knowledge by a whole lot.