C#•3mo ago

✅ confused by this error

class Player(Vector2 position, Vector2 size) {
    public Vector2 Position { get; } = position;
    public Vector2 Velocity { get; private set; } = Vector2.Zero;
    public Vector2 Size { get; } = size;

    public Rectangle GetRect() {
        return new(Position, Size);
    }

    public void Input() {
        float dt = GetFrameTime();
        Velocity.X = 0.0f;
    }
}

class Player(Vector2 position, Vector2 size) {
    public Vector2 Position { get; } = position;
    public Vector2 Velocity { get; private set; } = Vector2.Zero;
    public Vector2 Size { get; } = size;

    public Rectangle GetRect() {
        return new(Position, Size);
    }

    public void Input() {
        float dt = GetFrameTime();
        Velocity.X = 0.0f;
    }
}

Cannot modify the return value of 'Player.Velocity' because it is not a variable in the Input method all i am doing is modifying the field of the struct, why is that a problem?

4 Replies

2spooky2play•3mo ago

ok read, up on it, its because it is a copy Velocity = new(0.0f, Velocity.Y); is there a better syntax for this?

Angius•3mo ago

Velocity = Velocity with { X = 0.0f } maybe?

2spooky2play•3mo ago

ill keep that in my back pocket, thanks

Angius•3mo ago

And, yeah, that's because Vector2 is a struct

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✅ confused by this error