C# Console Collision

Question

Currently I am making a console game (a rougelike) and I needed some advice on the collision events. I need to tell if there is a wall (▒) next to the player (@) and if so disallow the player from moving in that direction. Does anyone have any ideas about how I could do this with the console in C#?

If needed I can provide some of my code.

Answer 1

There are multiple ways to handle this. I would expect you have a two-dimensional array representing the game map. One simple method is to add a method CheckMove which validates an attempted move. If not valid, then the move is not performed. Here's a sort of pseudo-code example.

public bool CheckMove(int newY, int newX) {
    if (grid[newY][newX] == WALL)
        return false;
    if (newY < 0 || newY > Y_MAX || newX < 0 || newX > X_MAX)
        return false;
    return true;
}

public void Move(int dir) {
    // calc new x & y

    if (!CheckMove(newY, newX)) return;

    // else do the move
}