Climbing refactor (#20516)
This commit is contained in:
metalgearsloth
GitHub
163
Content.Client/Interaction/DragDropHelper.cs
Normal file
163
Content.Client/Interaction/DragDropHelper.cs
Normal file
@@ -0,0 +1,163 @@
|
||||
using Robust.Client.Input;
|
||||
using Robust.Shared.Map;
|
||||
|
||||
namespace Content.Client.Interaction;
|
||||
|
||||
/// <summary>
|
||||
/// Helper for implementing drag and drop interactions.
|
||||
///
|
||||
/// The basic flow for a drag drop interaction as per this helper is:
|
||||
/// 1. User presses mouse down on something (using class should communicate this to helper by calling MouseDown()).
|
||||
/// 2. User continues to hold the mouse down and moves the mouse outside of the defined
|
||||
/// deadzone. OnBeginDrag is invoked to see if a drag should be initiated. If so, initiates a drag.
|
||||
/// If user didn't move the mouse beyond the deadzone the drag is not initiated (OnEndDrag invoked).
|
||||
/// 3. Every Update/FrameUpdate, OnContinueDrag is invoked.
|
||||
/// 4. User lifts mouse up. This is not handled by DragDropHelper. The using class of the helper should
|
||||
/// do whatever they want and then end the drag by calling EndDrag() (which invokes OnEndDrag).
|
||||
///
|
||||
/// If for any reason the drag is ended, OnEndDrag is invoked.
|
||||
/// </summary>
|
||||
/// <typeparam name="T">thing being dragged and dropped</typeparam>
|
||||
public sealed class DragDropHelper<T>
|
||||
{
|
||||
private readonly IInputManager _inputManager;
|
||||
|
||||
private readonly OnBeginDrag _onBeginDrag;
|
||||
private readonly OnEndDrag _onEndDrag;
|
||||
private readonly OnContinueDrag _onContinueDrag;
|
||||
public float Deadzone = 2f;
|
||||
|
||||
/// <summary>
|
||||
/// Convenience method, current mouse screen position as provided by inputmanager.
|
||||
/// </summary>
|
||||
public ScreenCoordinates MouseScreenPosition => _inputManager.MouseScreenPosition;
|
||||
|
||||
/// <summary>
|
||||
/// True if initiated a drag and currently dragging something.
|
||||
/// I.e. this will be false if we've just had a mousedown over something but the mouse
|
||||
/// has not moved outside of the drag deadzone.
|
||||
/// </summary>
|
||||
public bool IsDragging => _state == DragState.Dragging;
|
||||
|
||||
/// <summary>
|
||||
/// Current thing being dragged or which mouse button is being held down on.
|
||||
/// </summary>
|
||||
public T? Dragged { get; private set; }
|
||||
|
||||
// screen pos where the mouse down began for the drag
|
||||
private ScreenCoordinates _mouseDownScreenPos;
|
||||
private DragState _state = DragState.NotDragging;
|
||||
|
||||
private enum DragState : byte
|
||||
{
|
||||
NotDragging,
|
||||
// not dragging yet, waiting to see
|
||||
// if they hold for long enough
|
||||
MouseDown,
|
||||
// currently dragging something
|
||||
Dragging,
|
||||
}
|
||||
|
||||
/// <param name="onBeginDrag"><see cref="OnBeginDrag"/></param>
|
||||
/// <param name="onContinueDrag"><see cref="OnContinueDrag"/></param>
|
||||
/// <param name="onEndDrag"><see cref="OnEndDrag"/></param>
|
||||
public DragDropHelper(OnBeginDrag onBeginDrag, OnContinueDrag onContinueDrag, OnEndDrag onEndDrag)
|
||||
{
|
||||
_inputManager = IoCManager.Resolve<IInputManager>();
|
||||
_onBeginDrag = onBeginDrag;
|
||||
_onEndDrag = onEndDrag;
|
||||
_onContinueDrag = onContinueDrag;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Tell the helper that the mouse button was pressed down on
|
||||
/// a target, thus a drag has the possibility to begin for this target.
|
||||
/// Assumes current mouse screen position is the location the mouse was clicked.
|
||||
///
|
||||
/// EndDrag should be called when the drag is done.
|
||||
/// </summary>
|
||||
public void MouseDown(T target)
|
||||
{
|
||||
if (_state != DragState.NotDragging)
|
||||
{
|
||||
EndDrag();
|
||||
}
|
||||
|
||||
Dragged = target;
|
||||
_state = DragState.MouseDown;
|
||||
_mouseDownScreenPos = _inputManager.MouseScreenPosition;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Stop the current drag / drop operation no matter what state it is in.
|
||||
/// </summary>
|
||||
public void EndDrag()
|
||||
{
|
||||
Dragged = default;
|
||||
_state = DragState.NotDragging;
|
||||
_onEndDrag.Invoke();
|
||||
}
|
||||
|
||||
private void StartDragging()
|
||||
{
|
||||
if (_onBeginDrag.Invoke())
|
||||
{
|
||||
_state = DragState.Dragging;
|
||||
}
|
||||
else
|
||||
{
|
||||
EndDrag();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Should be invoked by using class every FrameUpdate or Update.
|
||||
/// </summary>
|
||||
public void Update(float frameTime)
|
||||
{
|
||||
switch (_state)
|
||||
{
|
||||
// check if dragging should begin
|
||||
case DragState.MouseDown:
|
||||
{
|
||||
var screenPos = _inputManager.MouseScreenPosition;
|
||||
if ((_mouseDownScreenPos.Position - screenPos.Position).Length() > Deadzone)
|
||||
{
|
||||
StartDragging();
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
case DragState.Dragging:
|
||||
{
|
||||
if (!_onContinueDrag.Invoke(frameTime))
|
||||
{
|
||||
EndDrag();
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Invoked when a drag is confirmed and going to be initiated. Implementation should
|
||||
/// typically set the drag shadow texture based on the target.
|
||||
/// </summary>
|
||||
/// <returns>true if drag should begin, false to end.</returns>
|
||||
public delegate bool OnBeginDrag();
|
||||
|
||||
/// <summary>
|
||||
/// Invoked every frame when drag is ongoing. Typically implementation should
|
||||
/// make the drag shadow follow the mouse position.
|
||||
/// </summary>
|
||||
/// <returns>true if drag should continue, false to end.</returns>
|
||||
public delegate bool OnContinueDrag(float frameTime);
|
||||
|
||||
/// <summary>
|
||||
/// invoked when
|
||||
/// the drag drop is ending for any reason. This
|
||||
/// should typically just clear the drag shadow.
|
||||
/// </summary>
|
||||
public delegate void OnEndDrag();
|
||||
574
Content.Client/Interaction/DragDropSystem.cs
Normal file
574
Content.Client/Interaction/DragDropSystem.cs
Normal file
@@ -0,0 +1,574 @@
|
||||
using System.Numerics;
|
||||
using Content.Client.CombatMode;
|
||||
using Content.Client.Gameplay;
|
||||
using Content.Client.Outline;
|
||||
using Content.Shared.ActionBlocker;
|
||||
using Content.Shared.CCVar;
|
||||
using Content.Shared.DragDrop;
|
||||
using Content.Shared.Interaction;
|
||||
using Content.Shared.Interaction.Events;
|
||||
using Content.Shared.Popups;
|
||||
using Robust.Client.GameObjects;
|
||||
using Robust.Client.Graphics;
|
||||
using Robust.Client.Input;
|
||||
using Robust.Client.Player;
|
||||
using Robust.Client.State;
|
||||
using Robust.Shared.Configuration;
|
||||
using Robust.Shared.Input;
|
||||
using Robust.Shared.Input.Binding;
|
||||
using Robust.Shared.Map;
|
||||
using Robust.Shared.Player;
|
||||
using Robust.Shared.Prototypes;
|
||||
using Robust.Shared.Utility;
|
||||
using DrawDepth = Content.Shared.DrawDepth.DrawDepth;
|
||||
|
||||
namespace Content.Client.Interaction;
|
||||
|
||||
/// <summary>
|
||||
/// Handles clientside drag and drop logic
|
||||
/// </summary>
|
||||
public sealed class DragDropSystem : SharedDragDropSystem
|
||||
{
|
||||
[Dependency] private readonly IStateManager _stateManager = default!;
|
||||
[Dependency] private readonly IInputManager _inputManager = default!;
|
||||
[Dependency] private readonly IEyeManager _eyeManager = default!;
|
||||
[Dependency] private readonly IPlayerManager _playerManager = default!;
|
||||
[Dependency] private readonly IPrototypeManager _prototypeManager = default!;
|
||||
[Dependency] private readonly IConfigurationManager _cfgMan = default!;
|
||||
[Dependency] private readonly InteractionOutlineSystem _outline = default!;
|
||||
[Dependency] private readonly SharedInteractionSystem _interactionSystem = default!;
|
||||
[Dependency] private readonly CombatModeSystem _combatMode = default!;
|
||||
[Dependency] private readonly InputSystem _inputSystem = default!;
|
||||
[Dependency] private readonly ActionBlockerSystem _actionBlockerSystem = default!;
|
||||
[Dependency] private readonly EntityLookupSystem _lookup = default!;
|
||||
[Dependency] private readonly SharedPopupSystem _popup = default!;
|
||||
|
||||
// how often to recheck possible targets (prevents calling expensive
|
||||
// check logic each update)
|
||||
private const float TargetRecheckInterval = 0.25f;
|
||||
|
||||
// if a drag ends up being cancelled and it has been under this
|
||||
// amount of time since the mousedown, we will "replay" the original
|
||||
// mousedown event so it can be treated like a regular click
|
||||
private const float MaxMouseDownTimeForReplayingClick = 0.85f;
|
||||
|
||||
[ValidatePrototypeId<ShaderPrototype>]
|
||||
private const string ShaderDropTargetInRange = "SelectionOutlineInrange";
|
||||
|
||||
[ValidatePrototypeId<ShaderPrototype>]
|
||||
private const string ShaderDropTargetOutOfRange = "SelectionOutline";
|
||||
|
||||
/// <summary>
|
||||
/// Current entity being dragged around.
|
||||
/// </summary>
|
||||
private EntityUid? _draggedEntity;
|
||||
|
||||
/// <summary>
|
||||
/// If an entity is being dragged is there a drag shadow.
|
||||
/// </summary>
|
||||
private EntityUid? _dragShadow;
|
||||
|
||||
/// <summary>
|
||||
/// Time since mouse down over the dragged entity
|
||||
/// </summary>
|
||||
private float _mouseDownTime;
|
||||
|
||||
/// <summary>
|
||||
/// how much time since last recheck of all possible targets
|
||||
/// </summary>
|
||||
private float _targetRecheckTime;
|
||||
|
||||
/// <summary>
|
||||
/// Reserved initial mousedown event so we can replay it if no drag ends up being performed
|
||||
/// </summary>
|
||||
private PointerInputCmdHandler.PointerInputCmdArgs? _savedMouseDown;
|
||||
|
||||
/// <summary>
|
||||
/// Whether we are currently replaying the original mouse down, so we
|
||||
/// can ignore any events sent to this system
|
||||
/// </summary>
|
||||
private bool _isReplaying;
|
||||
|
||||
private float _deadzone;
|
||||
|
||||
private DragState _state = DragState.NotDragging;
|
||||
|
||||
/// <summary>
|
||||
/// screen pos where the mouse down began for the drag
|
||||
/// </summary>
|
||||
private ScreenCoordinates? _mouseDownScreenPos;
|
||||
|
||||
private ShaderInstance? _dropTargetInRangeShader;
|
||||
private ShaderInstance? _dropTargetOutOfRangeShader;
|
||||
|
||||
private readonly List<SpriteComponent> _highlightedSprites = new();
|
||||
|
||||
public override void Initialize()
|
||||
{
|
||||
base.Initialize();
|
||||
UpdatesOutsidePrediction = true;
|
||||
UpdatesAfter.Add(typeof(SharedEyeSystem));
|
||||
|
||||
_cfgMan.OnValueChanged(CCVars.DragDropDeadZone, SetDeadZone, true);
|
||||
|
||||
_dropTargetInRangeShader = _prototypeManager.Index<ShaderPrototype>(ShaderDropTargetInRange).Instance();
|
||||
_dropTargetOutOfRangeShader = _prototypeManager.Index<ShaderPrototype>(ShaderDropTargetOutOfRange).Instance();
|
||||
// needs to fire on mouseup and mousedown so we can detect a drag / drop
|
||||
CommandBinds.Builder
|
||||
.BindBefore(EngineKeyFunctions.Use, new PointerInputCmdHandler(OnUse, false, true), new[] { typeof(SharedInteractionSystem) })
|
||||
.Register<DragDropSystem>();
|
||||
}
|
||||
|
||||
private void SetDeadZone(float deadZone)
|
||||
{
|
||||
_deadzone = deadZone;
|
||||
}
|
||||
|
||||
public override void Shutdown()
|
||||
{
|
||||
_cfgMan.UnsubValueChanged(CCVars.DragDropDeadZone, SetDeadZone);
|
||||
CommandBinds.Unregister<DragDropSystem>();
|
||||
base.Shutdown();
|
||||
}
|
||||
|
||||
private bool OnUse(in PointerInputCmdHandler.PointerInputCmdArgs args)
|
||||
{
|
||||
// not currently predicted
|
||||
if (_inputSystem.Predicted)
|
||||
return false;
|
||||
|
||||
// currently replaying a saved click, don't handle this because
|
||||
// we already decided this click doesn't represent an actual drag attempt
|
||||
if (_isReplaying)
|
||||
return false;
|
||||
|
||||
if (args.State == BoundKeyState.Down)
|
||||
{
|
||||
return OnUseMouseDown(args);
|
||||
}
|
||||
|
||||
if (args.State == BoundKeyState.Up)
|
||||
{
|
||||
return OnUseMouseUp(args);
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
private void EndDrag()
|
||||
{
|
||||
if (_state == DragState.NotDragging)
|
||||
return;
|
||||
|
||||
if (_dragShadow != null)
|
||||
{
|
||||
Del(_dragShadow.Value);
|
||||
_dragShadow = null;
|
||||
}
|
||||
|
||||
_draggedEntity = null;
|
||||
_state = DragState.NotDragging;
|
||||
_mouseDownScreenPos = null;
|
||||
|
||||
RemoveHighlights();
|
||||
_outline.SetEnabled(true);
|
||||
_mouseDownTime = 0;
|
||||
_savedMouseDown = null;
|
||||
}
|
||||
|
||||
private bool OnUseMouseDown(in PointerInputCmdHandler.PointerInputCmdArgs args)
|
||||
{
|
||||
if (args.Session?.AttachedEntity is not {Valid: true} dragger ||
|
||||
_combatMode.IsInCombatMode())
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
// cancel any current dragging if there is one (shouldn't be because they would've had to have lifted
|
||||
// the mouse, canceling the drag, but just being cautious)
|
||||
EndDrag();
|
||||
|
||||
var entity = args.EntityUid;
|
||||
|
||||
// possibly initiating a drag
|
||||
// check if the clicked entity is draggable
|
||||
if (!Exists(entity))
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
// check if the entity is reachable
|
||||
if (!_interactionSystem.InRangeUnobstructed(dragger, entity))
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
var ev = new CanDragEvent();
|
||||
|
||||
RaiseLocalEvent(entity, ref ev);
|
||||
|
||||
if (ev.Handled != true)
|
||||
return false;
|
||||
|
||||
_draggedEntity = entity;
|
||||
_state = DragState.MouseDown;
|
||||
_mouseDownScreenPos = _inputManager.MouseScreenPosition;
|
||||
_mouseDownTime = 0;
|
||||
|
||||
// don't want anything else to process the click,
|
||||
// but we will save the event so we can "re-play" it if this drag does
|
||||
// not turn into an actual drag so the click can be handled normally
|
||||
_savedMouseDown = args;
|
||||
|
||||
return true;
|
||||
|
||||
}
|
||||
|
||||
private void StartDrag()
|
||||
{
|
||||
if (!Exists(_draggedEntity))
|
||||
{
|
||||
// something happened to the clicked entity or we moved the mouse off the target so
|
||||
// we shouldn't replay the original click
|
||||
return;
|
||||
}
|
||||
|
||||
_state = DragState.Dragging;
|
||||
DebugTools.Assert(_dragShadow == null);
|
||||
_outline.SetEnabled(false);
|
||||
HighlightTargets();
|
||||
|
||||
if (TryComp<SpriteComponent>(_draggedEntity, out var draggedSprite))
|
||||
{
|
||||
// pop up drag shadow under mouse
|
||||
var mousePos = _eyeManager.PixelToMap(_inputManager.MouseScreenPosition);
|
||||
_dragShadow = EntityManager.SpawnEntity("dragshadow", mousePos);
|
||||
var dragSprite = Comp<SpriteComponent>(_dragShadow.Value);
|
||||
dragSprite.CopyFrom(draggedSprite);
|
||||
dragSprite.RenderOrder = EntityManager.CurrentTick.Value;
|
||||
dragSprite.Color = dragSprite.Color.WithAlpha(0.7f);
|
||||
// keep it on top of everything
|
||||
dragSprite.DrawDepth = (int) DrawDepth.Overlays;
|
||||
if (!dragSprite.NoRotation)
|
||||
{
|
||||
Transform(_dragShadow.Value).WorldRotation = Transform(_draggedEntity.Value).WorldRotation;
|
||||
}
|
||||
|
||||
// drag initiated
|
||||
return;
|
||||
}
|
||||
|
||||
Log.Warning($"Unable to display drag shadow for {ToPrettyString(_draggedEntity.Value)} because it has no sprite component.");
|
||||
}
|
||||
|
||||
private bool UpdateDrag(float frameTime)
|
||||
{
|
||||
if (!Exists(_draggedEntity) || _combatMode.IsInCombatMode())
|
||||
{
|
||||
EndDrag();
|
||||
return false;
|
||||
}
|
||||
|
||||
var player = _playerManager.LocalPlayer?.ControlledEntity;
|
||||
|
||||
// still in range of the thing we are dragging?
|
||||
if (player == null || !_interactionSystem.InRangeUnobstructed(player.Value, _draggedEntity.Value))
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
if (_dragShadow == null)
|
||||
return false;
|
||||
|
||||
_targetRecheckTime += frameTime;
|
||||
|
||||
if (_targetRecheckTime > TargetRecheckInterval)
|
||||
{
|
||||
HighlightTargets();
|
||||
_targetRecheckTime -= TargetRecheckInterval;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
private bool OnUseMouseUp(in PointerInputCmdHandler.PointerInputCmdArgs args)
|
||||
{
|
||||
if (_state == DragState.MouseDown)
|
||||
{
|
||||
// haven't started the drag yet, quick mouseup, definitely treat it as a normal click by
|
||||
// replaying the original cmd
|
||||
try
|
||||
{
|
||||
if (_savedMouseDown.HasValue && _mouseDownTime < MaxMouseDownTimeForReplayingClick)
|
||||
{
|
||||
var savedValue = _savedMouseDown.Value;
|
||||
_isReplaying = true;
|
||||
// adjust the timing info based on the current tick so it appears as if it happened now
|
||||
var replayMsg = savedValue.OriginalMessage;
|
||||
|
||||
switch (replayMsg)
|
||||
{
|
||||
case ClientFullInputCmdMessage clientInput:
|
||||
replayMsg = new ClientFullInputCmdMessage(args.OriginalMessage.Tick,
|
||||
args.OriginalMessage.SubTick,
|
||||
replayMsg.InputFunctionId)
|
||||
{
|
||||
State = replayMsg.State,
|
||||
Coordinates = clientInput.Coordinates,
|
||||
ScreenCoordinates = clientInput.ScreenCoordinates,
|
||||
Uid = clientInput.Uid,
|
||||
};
|
||||
break;
|
||||
case FullInputCmdMessage fullInput:
|
||||
replayMsg = new FullInputCmdMessage(args.OriginalMessage.Tick,
|
||||
args.OriginalMessage.SubTick,
|
||||
replayMsg.InputFunctionId, replayMsg.State, fullInput.Coordinates, fullInput.ScreenCoordinates,
|
||||
fullInput.Uid);
|
||||
break;
|
||||
default:
|
||||
throw new ArgumentOutOfRangeException();
|
||||
}
|
||||
|
||||
if (savedValue.Session != null)
|
||||
{
|
||||
_inputSystem.HandleInputCommand(savedValue.Session, EngineKeyFunctions.Use, replayMsg,
|
||||
true);
|
||||
}
|
||||
|
||||
_isReplaying = false;
|
||||
}
|
||||
}
|
||||
finally
|
||||
{
|
||||
EndDrag();
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
var localPlayer = _playerManager.LocalPlayer?.ControlledEntity;
|
||||
|
||||
if (localPlayer == null || !Exists(_draggedEntity))
|
||||
{
|
||||
EndDrag();
|
||||
return false;
|
||||
}
|
||||
|
||||
IEnumerable<EntityUid> entities;
|
||||
var coords = args.Coordinates;
|
||||
|
||||
if (_stateManager.CurrentState is GameplayState screen)
|
||||
{
|
||||
entities = screen.GetClickableEntities(coords);
|
||||
}
|
||||
else
|
||||
{
|
||||
entities = Array.Empty<EntityUid>();
|
||||
}
|
||||
|
||||
var outOfRange = false;
|
||||
var user = localPlayer.Value;
|
||||
|
||||
foreach (var entity in entities)
|
||||
{
|
||||
if (entity == _draggedEntity)
|
||||
continue;
|
||||
|
||||
// check if it's able to be dropped on by current dragged entity
|
||||
var valid = ValidDragDrop(user, _draggedEntity.Value, entity);
|
||||
|
||||
if (valid != true) continue;
|
||||
|
||||
if (!_interactionSystem.InRangeUnobstructed(user, entity)
|
||||
|| !_interactionSystem.InRangeUnobstructed(user, _draggedEntity.Value))
|
||||
{
|
||||
outOfRange = true;
|
||||
continue;
|
||||
}
|
||||
|
||||
// tell the server about the drop attempt
|
||||
RaisePredictiveEvent(new DragDropRequestEvent(GetNetEntity(_draggedEntity.Value), GetNetEntity(entity)));
|
||||
EndDrag();
|
||||
return true;
|
||||
}
|
||||
|
||||
if (outOfRange)
|
||||
{
|
||||
_popup.PopupEntity(Loc.GetString("drag-drop-system-out-of-range-text"), _draggedEntity.Value, Filter.Local(), true);
|
||||
}
|
||||
|
||||
EndDrag();
|
||||
return false;
|
||||
}
|
||||
|
||||
// TODO make this just use TargetOutlineSystem
|
||||
private void HighlightTargets()
|
||||
{
|
||||
if (!Exists(_draggedEntity) ||
|
||||
!Exists(_dragShadow))
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
var user = _playerManager.LocalPlayer?.ControlledEntity;
|
||||
|
||||
if (user == null)
|
||||
return;
|
||||
|
||||
// highlights the possible targets which are visible
|
||||
// and able to be dropped on by the current dragged entity
|
||||
|
||||
// remove current highlights
|
||||
RemoveHighlights();
|
||||
|
||||
// find possible targets on screen even if not reachable
|
||||
// TODO: Duplicated in SpriteSystem and TargetOutlineSystem. Should probably be cached somewhere for a frame?
|
||||
var mousePos = _eyeManager.PixelToMap(_inputManager.MouseScreenPosition);
|
||||
var expansion = new Vector2(1.5f, 1.5f);
|
||||
|
||||
var bounds = new Box2(mousePos.Position - expansion, mousePos.Position + expansion);
|
||||
var pvsEntities = _lookup.GetEntitiesIntersecting(mousePos.MapId, bounds);
|
||||
|
||||
var spriteQuery = GetEntityQuery<SpriteComponent>();
|
||||
|
||||
foreach (var entity in pvsEntities)
|
||||
{
|
||||
if (!spriteQuery.TryGetComponent(entity, out var inRangeSprite) ||
|
||||
!inRangeSprite.Visible ||
|
||||
entity == _draggedEntity)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
var valid = ValidDragDrop(user.Value, _draggedEntity.Value, entity);
|
||||
|
||||
// check if it's able to be dropped on by current dragged entity
|
||||
if (valid == null)
|
||||
continue;
|
||||
|
||||
// We'll do a final check given server-side does this before any dragdrop can take place.
|
||||
if (valid.Value)
|
||||
{
|
||||
valid = _interactionSystem.InRangeUnobstructed(user.Value, _draggedEntity.Value)
|
||||
&& _interactionSystem.InRangeUnobstructed(user.Value, entity);
|
||||
}
|
||||
|
||||
if (inRangeSprite.PostShader != null &&
|
||||
inRangeSprite.PostShader != _dropTargetInRangeShader &&
|
||||
inRangeSprite.PostShader != _dropTargetOutOfRangeShader)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
// highlight depending on whether its in or out of range
|
||||
inRangeSprite.PostShader = valid.Value ? _dropTargetInRangeShader : _dropTargetOutOfRangeShader;
|
||||
inRangeSprite.RenderOrder = EntityManager.CurrentTick.Value;
|
||||
_highlightedSprites.Add(inRangeSprite);
|
||||
}
|
||||
}
|
||||
|
||||
private void RemoveHighlights()
|
||||
{
|
||||
foreach (var highlightedSprite in _highlightedSprites)
|
||||
{
|
||||
if (highlightedSprite.PostShader != _dropTargetInRangeShader && highlightedSprite.PostShader != _dropTargetOutOfRangeShader)
|
||||
continue;
|
||||
|
||||
highlightedSprite.PostShader = null;
|
||||
highlightedSprite.RenderOrder = 0;
|
||||
}
|
||||
|
||||
_highlightedSprites.Clear();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Are these args valid for drag-drop?
|
||||
/// </summary>
|
||||
/// <returns>
|
||||
/// Returns null if no interactions are available or the user / target cannot interact with each other.
|
||||
/// Returns false if interactions exist but are not available currently.
|
||||
/// </returns>
|
||||
private bool? ValidDragDrop(EntityUid user, EntityUid dragged, EntityUid target)
|
||||
{
|
||||
if (!_actionBlockerSystem.CanInteract(user, target))
|
||||
return null;
|
||||
|
||||
// CanInteract() doesn't support checking a second "target" entity.
|
||||
// Doing so manually:
|
||||
var ev = new GettingInteractedWithAttemptEvent(user, dragged);
|
||||
RaiseLocalEvent(dragged, ev, true);
|
||||
|
||||
if (ev.Cancelled)
|
||||
return false;
|
||||
|
||||
var dropEv = new CanDropDraggedEvent(user, target);
|
||||
|
||||
RaiseLocalEvent(dragged, ref dropEv);
|
||||
|
||||
if (dropEv.Handled)
|
||||
{
|
||||
if (!dropEv.CanDrop)
|
||||
return false;
|
||||
}
|
||||
|
||||
var dropEv2 = new CanDropTargetEvent(user, dragged);
|
||||
|
||||
RaiseLocalEvent(target, ref dropEv2);
|
||||
|
||||
if (dropEv2.Handled)
|
||||
return dropEv2.CanDrop;
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
public override void Update(float frameTime)
|
||||
{
|
||||
base.Update(frameTime);
|
||||
|
||||
switch (_state)
|
||||
{
|
||||
// check if dragging should begin
|
||||
case DragState.MouseDown:
|
||||
{
|
||||
var screenPos = _inputManager.MouseScreenPosition;
|
||||
if ((_mouseDownScreenPos!.Value.Position - screenPos.Position).Length() > _deadzone)
|
||||
{
|
||||
StartDrag();
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
case DragState.Dragging:
|
||||
UpdateDrag(frameTime);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
public override void FrameUpdate(float frameTime)
|
||||
{
|
||||
base.FrameUpdate(frameTime);
|
||||
|
||||
// Update position every frame to make it smooth.
|
||||
if (Exists(_dragShadow))
|
||||
{
|
||||
var mousePos = _eyeManager.PixelToMap(_inputManager.MouseScreenPosition);
|
||||
Transform(_dragShadow.Value).WorldPosition = mousePos.Position;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public enum DragState : byte
|
||||
{
|
||||
NotDragging,
|
||||
|
||||
/// <summary>
|
||||
/// Not dragging yet, waiting to see
|
||||
/// if they hold for long enough
|
||||
/// </summary>
|
||||
MouseDown,
|
||||
|
||||
/// <summary>
|
||||
/// Currently dragging something
|
||||
/// </summary>
|
||||
Dragging,
|
||||
}
|
||||
Reference in New Issue
Block a user