Snake game problem

[BadAssPanda]

Hello guys! I want to make snake game but i dont know how to make the body to follow the head so if anyone can explain me or give me example it will be good.
Thank you very much!

[Gamer2015]

you could set the body positions from back to front and then move the head.
Now, I don't know how you store your data but I would have something like this:

struct Position {
    int x, y;

    Position& operator=(const Position& other) { 
        this->x = other.x;
        this->y = other.y;
        return *this;
    }
};

// snake stores the position of each part of the snake
// snake[0] is the head, the rest are tails
std::vector<Position> snake;

enum Direction { UP, DOWN, LEFT, RIGHT };
void move(Direction dir)
{
    for(int i = snake.size() - 1; i != 0; --i)
        snake[i - 1] = snake[i];
    
    switch(dir)
    {
    case UP: snake[0].y -= 1; break;
    case DOWN: snake[0].y += 1; break;
    case LEFT: snake[0].x -= 1; break;
    case RIGHT: snake[0].x += 1; break;
    }
}

Edit: renamed struct to "Position"

[Peter87]

Just in case you are unfamiliar with vector math, Vector2 in Gamer2015's code is just used to store a position. It has nothing to do with std::vector despite the name similarities.

[BadAssPanda]

Ok thank you very much for the example. But can you explain more about the code that you showed. Thank you!
P.S Where is vector2 I cant find it?

[Peter87]

BadAssPanda wrote:

P.S Where is vector2 I cant find it?

Gamer2015 had originally named the class Vector2 but he later changed the name to Position.