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using System;
namespace MonoGame.Extended.Collisions.Layers;
/// <summary>
/// Layer is a group of collision's actors.
/// </summary>
public class Layer
{
/// <summary>
/// If this property equals true, layer always will reset collision space.
/// </summary>
public bool IsDynamic { get; set; } = true;
/// <summary>
/// The space, which contain actors.
/// </summary>
public readonly ISpaceAlgorithm Space;
/// <summary>
/// Constructor for layer
/// </summary>
/// <param name="spaceAlgorithm">A space algorithm for actors</param>
/// <exception cref="ArgumentNullException"><paramref name="spaceAlgorithm"/> is null</exception>
public Layer(ISpaceAlgorithm spaceAlgorithm)
{
Space = spaceAlgorithm ?? throw new ArgumentNullException(nameof(spaceAlgorithm));
}
/// <summary>
/// Restructure a inner collection, if layer is dynamic, because actors can change own position
/// </summary>
public virtual void Reset()
{
if (IsDynamic)
Space.Reset();
}
}
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