314 lines
12 KiB
C#
314 lines
12 KiB
C#
using System.Threading;
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using Content.Server.DoAfter;
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using Content.Server.Hands.Systems;
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using Content.Server.Resist;
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using Content.Server.Popups;
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using Content.Server.Contests;
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using Content.Server.Inventory;
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using Content.Shared.Mobs;
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using Content.Shared.DoAfter;
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using Content.Shared.Buckle.Components;
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using Content.Shared.Hands.Components;
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using Content.Shared.Hands;
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using Content.Shared.Stunnable;
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using Content.Shared.Interaction.Events;
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using Content.Shared.Verbs;
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using Content.Shared.Carrying;
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using Content.Shared.Movement.Events;
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using Content.Shared.Movement.Systems;
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using Content.Shared.Pulling;
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using Content.Shared.Pulling.Components;
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using Content.Shared.Standing;
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using Content.Shared.ActionBlocker;
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using Content.Shared.Climbing.Events;
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using Content.Shared.Inventory.VirtualItem;
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using Content.Shared.Throwing;
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using Content.Shared.Physics.Pull;
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using Content.Shared.Mobs.Systems;
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using Robust.Shared.Map.Components;
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namespace Content.Server.Carrying
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{
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public sealed class CarryingSystem : EntitySystem
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{
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[Dependency] private readonly VirtualItemSystem _virtualItemSystem = default!;
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[Dependency] private readonly CarryingSlowdownSystem _slowdown = default!;
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[Dependency] private readonly DoAfterSystem _doAfterSystem = default!;
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[Dependency] private readonly StandingStateSystem _standingState = default!;
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[Dependency] private readonly ActionBlockerSystem _actionBlockerSystem = default!;
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[Dependency] private readonly SharedPullingSystem _pullingSystem = default!;
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[Dependency] private readonly MobStateSystem _mobStateSystem = default!;
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[Dependency] private readonly EscapeInventorySystem _escapeInventorySystem = default!;
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[Dependency] private readonly PopupSystem _popupSystem = default!;
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[Dependency] private readonly ContestsSystem _contests = default!;
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[Dependency] private readonly MovementSpeedModifierSystem _movementSpeed = default!;
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public override void Initialize()
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{
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base.Initialize();
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SubscribeLocalEvent<CarriableComponent, GetVerbsEvent<AlternativeVerb>>(AddCarryVerb);
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SubscribeLocalEvent<CarryingComponent, VirtualItemDeletedEvent>(OnVirtualItemDeleted);
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SubscribeLocalEvent<CarryingComponent, BeforeThrowEvent>(OnThrow);
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SubscribeLocalEvent<CarryingComponent, EntParentChangedMessage>(OnParentChanged);
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SubscribeLocalEvent<CarryingComponent, MobStateChangedEvent>(OnMobStateChanged);
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SubscribeLocalEvent<BeingCarriedComponent, InteractionAttemptEvent>(OnInteractionAttempt);
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SubscribeLocalEvent<BeingCarriedComponent, MoveInputEvent>(OnMoveInput);
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SubscribeLocalEvent<BeingCarriedComponent, UpdateCanMoveEvent>(OnMoveAttempt);
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SubscribeLocalEvent<BeingCarriedComponent, StandAttemptEvent>(OnStandAttempt);
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SubscribeLocalEvent<BeingCarriedComponent, GettingInteractedWithAttemptEvent>(OnInteractedWith);
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SubscribeLocalEvent<BeingCarriedComponent, PullAttemptEvent>(OnPullAttempt);
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SubscribeLocalEvent<BeingCarriedComponent, StartClimbEvent>(OnStartClimb);
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SubscribeLocalEvent<BeingCarriedComponent, BuckleChangeEvent>(OnBuckleChange);
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SubscribeLocalEvent<CarriableComponent, CarryDoAfterEvent>(OnDoAfter);
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}
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private void AddCarryVerb(EntityUid uid, CarriableComponent component, GetVerbsEvent<AlternativeVerb> args)
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{
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if (!args.CanInteract || !args.CanAccess)
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return;
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if (!CanCarry(args.User, uid, component))
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return;
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if (HasComp<CarryingComponent>(args.User)) // yeah not dealing with that
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return;
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if (HasComp<BeingCarriedComponent>(args.User) || HasComp<BeingCarriedComponent>(args.Target))
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return;
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if (!_mobStateSystem.IsAlive(args.User))
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return;
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if (args.User == args.Target)
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return;
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AlternativeVerb verb = new()
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{
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Act = () =>
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{
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StartCarryDoAfter(args.User, uid, component);
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},
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Text = Loc.GetString("carry-verb"),
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Priority = 2
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};
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args.Verbs.Add(verb);
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}
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/// <summary>
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/// Since the carried entity is stored as 2 virtual items, when deleted we want to drop them.
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/// </summary>
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private void OnVirtualItemDeleted(EntityUid uid, CarryingComponent component, VirtualItemDeletedEvent args)
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{
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if (!HasComp<CarriableComponent>(args.BlockingEntity))
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return;
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DropCarried(uid, args.BlockingEntity);
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}
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/// <summary>
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/// Basically using virtual item passthrough to throw the carried person. A new age!
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/// Maybe other things besides throwing should use virt items like this...
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/// </summary>
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private void OnThrow(EntityUid uid, CarryingComponent component, BeforeThrowEvent args)
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{
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if (!TryComp<VirtualItemComponent>(args.ItemUid, out var virtItem) || !HasComp<CarriableComponent>(virtItem.BlockingEntity))
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return;
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args.ItemUid = virtItem.BlockingEntity;
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var multiplier = _contests.MassContest(uid, virtItem.BlockingEntity);
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args.ThrowStrength = 5f * multiplier;
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}
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private void OnParentChanged(EntityUid uid, CarryingComponent component, ref EntParentChangedMessage args)
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{
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if (Transform(uid).MapID != args.OldMapId)
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return;
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DropCarried(uid, component.Carried);
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}
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private void OnMobStateChanged(EntityUid uid, CarryingComponent component, MobStateChangedEvent args)
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{
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DropCarried(uid, component.Carried);
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}
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/// <summary>
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/// Only let the person being carried interact with their carrier and things on their person.
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/// </summary>
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private void OnInteractionAttempt(EntityUid uid, BeingCarriedComponent component, InteractionAttemptEvent args)
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{
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if (args.Target == null)
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return;
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var targetParent = Transform(args.Target.Value).ParentUid;
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if (args.Target.Value != component.Carrier && targetParent != component.Carrier && targetParent != uid)
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args.Cancel();
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}
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/// <summary>
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/// Try to escape via the escape inventory system.
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/// </summary>
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private void OnMoveInput(EntityUid uid, BeingCarriedComponent component, ref MoveInputEvent args)
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{
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if (!TryComp<CanEscapeInventoryComponent>(uid, out var escape))
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return;
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if (_actionBlockerSystem.CanInteract(uid, component.Carrier))
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{
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_escapeInventorySystem.AttemptEscape(uid, component.Carrier, escape, _contests.MassContest(uid, component.Carrier));
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}
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}
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private void OnMoveAttempt(EntityUid uid, BeingCarriedComponent component, UpdateCanMoveEvent args)
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{
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args.Cancel();
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}
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private void OnStandAttempt(EntityUid uid, BeingCarriedComponent component, StandAttemptEvent args)
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{
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args.Cancel();
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}
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private void OnInteractedWith(EntityUid uid, BeingCarriedComponent component, GettingInteractedWithAttemptEvent args)
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{
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if (args.Uid != component.Carrier)
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args.Cancel();
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}
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private void OnPullAttempt(EntityUid uid, BeingCarriedComponent component, PullAttemptEvent args)
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{
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args.Cancelled = true;
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}
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private void OnStartClimb(EntityUid uid, BeingCarriedComponent component, StartClimbEvent args)
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{
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DropCarried(component.Carrier, uid);
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}
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private void OnBuckleChange(EntityUid uid, BeingCarriedComponent component, ref BuckleChangeEvent args)
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{
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DropCarried(component.Carrier, uid);
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}
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private void OnDoAfter(EntityUid uid, CarriableComponent component, CarryDoAfterEvent args)
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{
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component.CancelToken = null;
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if (args.Handled || args.Cancelled)
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return;
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if (!CanCarry(args.Args.User, uid, component))
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return;
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Carry(args.Args.User, uid);
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args.Handled = true;
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}
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private void StartCarryDoAfter(EntityUid carrier, EntityUid carried, CarriableComponent component)
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{
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TimeSpan length = TimeSpan.FromSeconds(3);
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var mod = _contests.MassContest(carrier, carried);
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if (mod != 0)
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length /= mod;
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if (length >= TimeSpan.FromSeconds(9))
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{
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_popupSystem.PopupEntity(Loc.GetString("carry-too-heavy"), carried, carrier, Shared.Popups.PopupType.SmallCaution);
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return;
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}
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if (!HasComp<KnockedDownComponent>(carried))
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length *= 2f;
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component.CancelToken = new CancellationTokenSource();
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var ev = new CarryDoAfterEvent();
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var args = new DoAfterArgs(EntityManager, carrier, length, ev, carried, target: carried)
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{
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BreakOnTargetMove = true,
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BreakOnUserMove = true,
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NeedHand = true
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};
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_doAfterSystem.TryStartDoAfter(args);
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}
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private void Carry(EntityUid carrier, EntityUid carried)
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{
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if (TryComp<SharedPullableComponent>(carried, out var pullable))
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_pullingSystem.TryStopPull(pullable);
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Transform(carrier).AttachToGridOrMap();
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Transform(carried).AttachToGridOrMap();
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Transform(carried).Coordinates = Transform(carrier).Coordinates;
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Transform(carried).AttachParent(Transform(carrier));
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_virtualItemSystem.TrySpawnVirtualItemInHand(carried, carrier);
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_virtualItemSystem.TrySpawnVirtualItemInHand(carried, carrier);
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var carryingComp = EnsureComp<CarryingComponent>(carrier);
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ApplyCarrySlowdown(carrier, carried);
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var carriedComp = EnsureComp<BeingCarriedComponent>(carried);
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EnsureComp<KnockedDownComponent>(carried);
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EnsureComp<CanEscapeInventoryComponent>(carried);
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carryingComp.Carried = carried;
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carriedComp.Carrier = carrier;
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_actionBlockerSystem.UpdateCanMove(carried);
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}
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public void DropCarried(EntityUid carrier, EntityUid carried)
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{
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RemComp<CarryingComponent>(carrier); // get rid of this first so we don't recusrively fire that event
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RemComp<CarryingSlowdownComponent>(carrier);
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RemComp<BeingCarriedComponent>(carried);
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RemComp<KnockedDownComponent>(carried);
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RemComp<CanEscapeInventoryComponent>(carried);
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_actionBlockerSystem.UpdateCanMove(carried);
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_virtualItemSystem.DeleteInHandsMatching(carrier, carried);
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Transform(carried).AttachToGridOrMap();
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_standingState.Stand(carried);
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_movementSpeed.RefreshMovementSpeedModifiers(carrier);
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}
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private void ApplyCarrySlowdown(EntityUid carrier, EntityUid carried)
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{
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var massRatio = _contests.MassContest(carrier, carried);
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if (massRatio == 0)
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massRatio = 1;
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var massRatioSq = Math.Pow(massRatio, 2);
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var modifier = (1 - (0.15 / massRatioSq));
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modifier = Math.Max(0.1, modifier);
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var slowdownComp = EnsureComp<CarryingSlowdownComponent>(carrier);
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_slowdown.SetModifier(carrier, (float) modifier, (float) modifier, slowdownComp);
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}
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public bool CanCarry(EntityUid carrier, EntityUid carried, CarriableComponent? carriedComp = null)
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{
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if (!Resolve(carried, ref carriedComp, false))
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return false;
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if (carriedComp.CancelToken != null)
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return false;
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if (!HasComp<MapGridComponent>(Transform(carrier).ParentUid))
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return false;
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if (HasComp<BeingCarriedComponent>(carrier) || HasComp<BeingCarriedComponent>(carried))
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return false;
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if (!TryComp<HandsComponent>(carrier, out var hands))
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return false;
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if (hands.CountFreeHands() < carriedComp.FreeHandsRequired)
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return false;
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return true;
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}
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}
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}
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