107 lines
4.0 KiB
C#
107 lines
4.0 KiB
C#
using System.Linq;
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using Content.Server.Explosion.EntitySystems;
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using Content.Server.Pointing.Components;
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using Content.Shared.MobState.Components;
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using Content.Shared.Pointing.Components;
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using JetBrains.Annotations;
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using Robust.Server.GameObjects;
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using Robust.Shared.Player;
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using Robust.Shared.Random;
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using DrawDepth = Content.Shared.DrawDepth.DrawDepth;
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namespace Content.Server.Pointing.EntitySystems
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{
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[UsedImplicitly]
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internal sealed class RoguePointingSystem : EntitySystem
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{
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[Dependency] private readonly IRobustRandom _random = default!;
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[Dependency] private readonly ExplosionSystem _explosion = default!;
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public override void Initialize()
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{
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base.Initialize();
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SubscribeLocalEvent<RoguePointingArrowComponent, ComponentStartup>(OnStartup);
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}
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private void OnStartup(EntityUid uid, RoguePointingArrowComponent component, ComponentStartup args)
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{
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if (EntityManager.TryGetComponent(uid, out SpriteComponent? sprite))
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{
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sprite.DrawDepth = (int) DrawDepth.Overlays;
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}
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}
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private EntityUid? RandomNearbyPlayer(EntityUid uid, RoguePointingArrowComponent? component = null, TransformComponent? transform = null)
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{
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if (!Resolve(uid, ref component, ref transform))
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return null;
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var players = Filter.Empty()
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.AddPlayersByPvs(transform.MapPosition)
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.RemoveWhereAttachedEntity(euid => !EntityManager.TryGetComponent(euid, out MobStateComponent? mobStateComponent) || mobStateComponent.IsDead())
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.Recipients
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.ToArray();
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return players.Length != 0
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? _random.Pick(players).AttachedEntity
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: null;
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}
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private void UpdateAppearance(EntityUid uid, RoguePointingArrowComponent? component = null, TransformComponent? transform = null, AppearanceComponent? appearance = null)
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{
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if (!Resolve(uid, ref component, ref transform, ref appearance) || component.Chasing == null)
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return;
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appearance.SetData(RoguePointingArrowVisuals.Rotation, transform.LocalRotation.Degrees);
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}
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public override void Update(float frameTime)
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{
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foreach (var (component, transform) in EntityManager.EntityQuery<RoguePointingArrowComponent, TransformComponent>())
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{
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var uid = component.Owner;
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component.Chasing ??= RandomNearbyPlayer(uid, component, transform);
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if (component.Chasing is not {Valid: true} chasing)
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{
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EntityManager.QueueDeleteEntity(uid);
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return;
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}
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component.TurningDelay -= frameTime;
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if (component.TurningDelay > 0)
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{
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var difference = EntityManager.GetComponent<TransformComponent>(chasing).WorldPosition - transform.WorldPosition;
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var angle = difference.ToAngle();
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var adjusted = angle.Degrees + 90;
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var newAngle = Angle.FromDegrees(adjusted);
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transform.LocalRotation = newAngle;
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UpdateAppearance(uid, component, transform);
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return;
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}
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transform.WorldRotation += Angle.FromDegrees(20);
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UpdateAppearance(uid, component, transform);
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var toChased = EntityManager.GetComponent<TransformComponent>(chasing).WorldPosition - transform.WorldPosition;
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transform.WorldPosition += toChased * frameTime * component.ChasingSpeed;
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component.ChasingTime -= frameTime;
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if (component.ChasingTime > 0)
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{
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return;
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}
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_explosion.QueueExplosion(uid, ExplosionSystem.DefaultExplosionPrototypeId, 50, 3, 10);
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EntityManager.QueueDeleteEntity(uid);
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}
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}
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}
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}
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