CollisionAdjust.cs

using System.Drawing;
using Newtonsoft.Json;
 
namespace Gondwana.Physics.Collisions;

public struct CollisionAdjust : IEquatable<CollisionAdjust>
{
    [JsonProperty]
    public int Top { get; set; }

    [JsonProperty]
    public int Bottom { get; set; }

    [JsonProperty]
    public int Left { get; set; }

    [JsonProperty]
    public int Right { get; set; }

    public static readonly CollisionAdjust None = new();

    public CollisionAdjust(int top, int bottom, int left, int right)
    {
        Top = top;
        Bottom = bottom;
        Left = left;
        Right = right;
    }

    public readonly Rectangle ApplyTo(Rectangle rectangle)
    {
        return Rectangle.FromLTRB(
            rectangle.Left + Left,
            rectangle.Top + Top,
            rectangle.Right - Right,
            rectangle.Bottom - Bottom);
    }

    public readonly bool Equals(CollisionAdjust other) =>
        Top == other.Top &&
        Bottom == other.Bottom &&
        Left == other.Left &&
        Right == other.Right;

    public override readonly bool Equals(object? obj) =>
        obj is CollisionAdjust other && Equals(other);

    public override readonly int GetHashCode() =>
        HashCode.Combine(Top, Bottom, Left, Right);

    public static bool operator ==(CollisionAdjust left, CollisionAdjust right) =>
        left.Equals(right);

    public static bool operator !=(CollisionAdjust left, CollisionAdjust right) =>
        !left.Equals(right);
}