63 lines
2.2 KiB
C#
63 lines
2.2 KiB
C#
#nullable enable
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using System.Collections.Generic;
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using System.Diagnostics.CodeAnalysis;
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using System.Linq;
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using Content.Shared.Physics;
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using Content.Shared.Utility;
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using Robust.Shared.GameObjects;
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using Robust.Shared.Map;
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using Robust.Shared.Maths;
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namespace Content.Shared.GameObjects.Verbs
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{
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public class SharedVerbSystem : EntitySystem
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{
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/// <summary>
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/// Get all of the entities relevant for the contextmenu
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/// </summary>
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/// <param name="player"></param>
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/// <param name="targetPos"></param>
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/// <param name="contextEntities"></param>
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/// <param name="buffer">Whether we should slightly extend out the ignored range for the ray predicated</param>
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/// <returns></returns>
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public bool TryGetContextEntities(IEntity player, MapCoordinates targetPos, [NotNullWhen(true)] out List<IEntity>? contextEntities, bool buffer = false)
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{
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contextEntities = null;
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var length = buffer ? 1.0f: 0.5f;
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var entities = EntityManager.GetEntitiesIntersecting(targetPos.MapId,
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Box2.CenteredAround(targetPos.Position, (length, length))).ToList();
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if (entities.Count == 0)
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{
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return false;
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}
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// Check if we have LOS to the clicked-location, otherwise no popup.
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var vectorDiff = player.Transform.MapPosition.Position - targetPos.Position;
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var distance = vectorDiff.Length + 0.01f;
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bool Ignored(IEntity entity)
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{
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return entities.Contains(entity) ||
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entity == player ||
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!entity.TryGetComponent(out OccluderComponent? occluder) ||
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!occluder.Enabled;
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}
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var mask = player.TryGetComponent(out SharedEyeComponent? eye) && eye.DrawFov
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? CollisionGroup.Opaque
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: CollisionGroup.None;
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var result = player.InRangeUnobstructed(targetPos, distance, mask, Ignored);
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if (!result)
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{
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return false;
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}
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contextEntities = entities;
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return true;
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}
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}
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}
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