Files
tbd-station-14/Content.Server/GameObjects/EntitySystems/HandsSystem.cs
2020-05-23 11:27:31 +02:00

252 lines
9.6 KiB
C#

using System;
using System.Linq;
using Content.Server.GameObjects;
using Content.Server.GameObjects.Components;
using Content.Server.GameObjects.Components.Stack;
using Content.Server.Interfaces;
using Content.Server.Interfaces.GameObjects;
using Content.Server.Throw;
using Content.Shared.GameObjects.Components.Inventory;
using Content.Shared.Input;
using Content.Shared.Interfaces;
using Content.Shared.Physics;
using JetBrains.Annotations;
using Robust.Server.GameObjects;
using Robust.Server.GameObjects.EntitySystemMessages;
using Robust.Server.GameObjects.EntitySystems;
using Robust.Server.Interfaces.Player;
using Robust.Shared.GameObjects;
using Robust.Shared.GameObjects.Components;
using Robust.Shared.GameObjects.Systems;
using Robust.Shared.Input;
using Robust.Shared.Interfaces.GameObjects;
using Robust.Shared.Interfaces.Map;
using Robust.Shared.Interfaces.Physics;
using Robust.Shared.Interfaces.Timing;
using Robust.Shared.IoC;
using Robust.Shared.Localization;
using Robust.Shared.Log;
using Robust.Shared.Map;
using Robust.Shared.Maths;
using Robust.Shared.Physics;
using Robust.Shared.Players;
using Robust.Shared.Utility;
namespace Content.Server.GameObjects.EntitySystems
{
[UsedImplicitly]
internal sealed class HandsSystem : EntitySystem
{
#pragma warning disable 649
[Dependency] private readonly IMapManager _mapManager;
[Dependency] private readonly IEntitySystemManager _entitySystemManager;
[Dependency] private readonly IServerNotifyManager _notifyManager;
#pragma warning restore 649
private const float ThrowForce = 1.5f; // Throwing force of mobs in Newtons
/// <inheritdoc />
public override void Initialize()
{
base.Initialize();
SubscribeLocalEvent<EntRemovedFromContainerMessage>(HandleContainerModified);
SubscribeLocalEvent<EntInsertedIntoContainerMessage>(HandleContainerModified);
var input = EntitySystemManager.GetEntitySystem<InputSystem>();
input.BindMap.BindFunction(ContentKeyFunctions.SwapHands, InputCmdHandler.FromDelegate(HandleSwapHands));
input.BindMap.BindFunction(ContentKeyFunctions.Drop, new PointerInputCmdHandler(HandleDrop));
input.BindMap.BindFunction(ContentKeyFunctions.ActivateItemInHand, InputCmdHandler.FromDelegate(HandleActivateItem));
input.BindMap.BindFunction(ContentKeyFunctions.ThrowItemInHand, new PointerInputCmdHandler(HandleThrowItem));
input.BindMap.BindFunction(ContentKeyFunctions.SmartEquipBackpack, InputCmdHandler.FromDelegate(HandleSmartEquipBackpack));
input.BindMap.BindFunction(ContentKeyFunctions.SmartEquipBelt, InputCmdHandler.FromDelegate(HandleSmartEquipBelt));
}
/// <inheritdoc />
public override void Shutdown()
{
if (EntitySystemManager.TryGetEntitySystem(out InputSystem input))
{
input.BindMap.UnbindFunction(ContentKeyFunctions.SwapHands);
input.BindMap.UnbindFunction(ContentKeyFunctions.Drop);
input.BindMap.UnbindFunction(ContentKeyFunctions.ActivateItemInHand);
input.BindMap.UnbindFunction(ContentKeyFunctions.ThrowItemInHand);
}
base.Shutdown();
}
private static void HandleContainerModified(ContainerModifiedMessage args)
{
if (args.Container.Owner.TryGetComponent(out IHandsComponent handsComponent))
{
handsComponent.HandleSlotModifiedMaybe(args);
}
}
private static bool TryGetAttachedComponent<T>(IPlayerSession session, out T component)
where T : Component
{
component = default;
var ent = session.AttachedEntity;
if (ent == null || !ent.IsValid())
return false;
if (!ent.TryGetComponent(out T comp))
return false;
component = comp;
return true;
}
private static void HandleSwapHands(ICommonSession session)
{
if (!TryGetAttachedComponent(session as IPlayerSession, out HandsComponent handsComp))
return;
var interactionSystem = EntitySystem.Get<InteractionSystem>();
var oldItem = handsComp.GetActiveHand;
handsComp.SwapHands();
var newItem = handsComp.GetActiveHand;
if(oldItem != null)
interactionSystem.HandDeselectedInteraction(handsComp.Owner, oldItem.Owner);
if(newItem != null)
interactionSystem.HandSelectedInteraction(handsComp.Owner, newItem.Owner);
}
private bool HandleDrop(ICommonSession session, GridCoordinates coords, EntityUid uid)
{
var ent = ((IPlayerSession) session).AttachedEntity;
if (ent == null || !ent.IsValid())
return false;
if (!ent.TryGetComponent(out HandsComponent handsComp))
return false;
if (handsComp.GetActiveHand == null)
return false;
if(EntitySystem.Get<SharedInteractionSystem>().InRangeUnobstructed(coords.ToMap(_mapManager), ent.Transform.WorldPosition, ignoredEnt: ent))
if (coords.InRange(_mapManager, ent.Transform.GridPosition, InteractionSystem.InteractionRange))
{
handsComp.Drop(handsComp.ActiveIndex, coords);
}
else
{
var entCoords = ent.Transform.GridPosition.Position;
var entToDesiredDropCoords = coords.Position - entCoords;
var clampedDropCoords = ((entToDesiredDropCoords.Normalized * InteractionSystem.InteractionRange) + entCoords);
handsComp.Drop(handsComp.ActiveIndex, new GridCoordinates(clampedDropCoords, coords.GridID));
}
else
handsComp.Drop(handsComp.ActiveIndex, ent.Transform.GridPosition);
return true;
}
private static void HandleActivateItem(ICommonSession session)
{
if (!TryGetAttachedComponent(session as IPlayerSession, out HandsComponent handsComp))
return;
handsComp.ActivateItem();
}
private bool HandleThrowItem(ICommonSession session, GridCoordinates coords, EntityUid uid)
{
var plyEnt = ((IPlayerSession)session).AttachedEntity;
if (plyEnt == null || !plyEnt.IsValid())
return false;
if (!plyEnt.TryGetComponent(out HandsComponent handsComp))
return false;
if (!handsComp.CanDrop(handsComp.ActiveIndex))
return false;
var throwEnt = handsComp.GetHand(handsComp.ActiveIndex).Owner;
if (!handsComp.ThrowItem())
return false;
// throw the item, split off from a stack if it's meant to be thrown individually
if (!throwEnt.TryGetComponent(out StackComponent stackComp) || stackComp.Count < 2 || !stackComp.ThrowIndividually)
{
handsComp.Drop(handsComp.ActiveIndex);
}
else
{
stackComp.Use(1);
throwEnt = throwEnt.EntityManager.SpawnEntity(throwEnt.Prototype.ID, plyEnt.Transform.GridPosition);
// can only throw one item at a time, regardless of what the prototype stack size is.
if (throwEnt.TryGetComponent<StackComponent>(out var newStackComp))
newStackComp.Count = 1;
}
ThrowHelper.Throw(throwEnt, ThrowForce, coords, plyEnt.Transform.GridPosition, false, plyEnt);
return true;
}
private void HandleSmartEquipBackpack(ICommonSession session)
{
HandleSmartEquip(session, EquipmentSlotDefines.Slots.BACKPACK);
}
private void HandleSmartEquipBelt(ICommonSession session)
{
HandleSmartEquip(session, EquipmentSlotDefines.Slots.BELT);
}
private void HandleSmartEquip(ICommonSession session, EquipmentSlotDefines.Slots equipementSlot)
{
var plyEnt = ((IPlayerSession) session).AttachedEntity;
if (plyEnt == null || !plyEnt.IsValid())
return;
if (!plyEnt.TryGetComponent(out HandsComponent handsComp) || !plyEnt.TryGetComponent(out InventoryComponent inventoryComp))
return;
if (!inventoryComp.TryGetSlotItem(equipementSlot, out ItemComponent equipmentItem)
|| !equipmentItem.Owner.TryGetComponent<ServerStorageComponent>(out var storageComponent))
{
_notifyManager.PopupMessage(plyEnt, plyEnt, Loc.GetString("You have no {0} to take something out of!", EquipmentSlotDefines.SlotNames[equipementSlot].ToLower()));
return;
}
var heldItem = handsComp.GetHand(handsComp.ActiveIndex)?.Owner;
if (heldItem != null)
{
storageComponent.PlayerInsertEntity(plyEnt);
}
else
{
if (storageComponent.StoredEntities.Count == 0)
{
_notifyManager.PopupMessage(plyEnt, plyEnt, Loc.GetString("There's nothing in your {0} to take out!", EquipmentSlotDefines.SlotNames[equipementSlot].ToLower()));
}
else
{
var lastStoredEntity = Enumerable.Last(storageComponent.StoredEntities);
if (storageComponent.Remove(lastStoredEntity))
handsComp.PutInHandOrDrop(lastStoredEntity.GetComponent<ItemComponent>());
}
}
}
}
}