mirror of
https://github.com/space-wizards/RobustToolbox.git
synced 2026-02-15 03:30:53 +01:00
656 lines
21 KiB
C#
656 lines
21 KiB
C#
using System;
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using System.Runtime.CompilerServices;
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using JetBrains.Annotations;
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using Robust.Shared.GameStates;
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using Robust.Shared.Map;
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using Robust.Shared.Maths;
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using Robust.Shared.Physics;
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using Robust.Shared.Utility;
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namespace Robust.Shared.GameObjects;
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public abstract partial class SharedTransformSystem
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{
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#region Anchoring
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internal void ReAnchor(TransformComponent xform,
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MapGridComponent oldGrid,
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MapGridComponent newGrid,
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Vector2i tilePos,
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TransformComponent oldGridXform,
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TransformComponent newGridXform,
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EntityQuery<TransformComponent> xformQuery)
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{
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// Bypass some of the expensive stuff in unanchoring / anchoring.
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oldGrid.Grid.RemoveFromSnapGridCell(tilePos, xform.Owner);
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newGrid.Grid.AddToSnapGridCell(tilePos, xform.Owner);
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// TODO: Could do this re-parent way better.
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// Unfortunately we don't want any anchoring events to go out hence... this.
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xform._anchored = false;
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oldGridXform._children.Remove(xform.Owner);
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newGridXform._children.Add(xform.Owner);
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xform._parent = newGrid.Owner;
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xform._anchored = true;
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SetGridId(xform, newGrid.GridIndex, xformQuery);
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var reParent = new EntParentChangedMessage(xform.Owner, oldGrid.Owner, xform.MapID, xform);
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RaiseLocalEvent(xform.Owner, ref reParent);
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// TODO: Ideally shouldn't need to call the moveevent
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var movEevee = new MoveEvent(xform.Owner,
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new EntityCoordinates(oldGrid.Owner, xform._localPosition),
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new EntityCoordinates(newGrid.Owner, xform._localPosition), xform);
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RaiseLocalEvent(xform.Owner, ref movEevee);
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DebugTools.Assert(xformQuery.GetComponent(oldGrid.Owner).MapID == xformQuery.GetComponent(newGrid.Owner).MapID);
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DebugTools.Assert(xform._anchored);
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Dirty(xform);
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var ev = new ReAnchorEvent(xform.Owner, oldGrid.GridIndex, newGrid.GridIndex, tilePos);
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RaiseLocalEvent(xform.Owner, ref ev);
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}
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public bool AnchorEntity(TransformComponent xform, IMapGrid grid, Vector2i tileIndices)
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{
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var result = grid.AddToSnapGridCell(tileIndices, xform.Owner);
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if (result)
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{
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// Mark as static first to avoid the velocity change on parent change.
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if (TryComp<PhysicsComponent>(xform.Owner, out var physicsComponent))
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physicsComponent.BodyType = BodyType.Static;
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// anchor snapping
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// Internally it will do the parent update; doing it separately just triggers a redundant move.
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xform.Coordinates = new EntityCoordinates(grid.GridEntityId, grid.GridTileToLocal(tileIndices).Position);
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xform.SetAnchored(result);
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}
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return result;
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}
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public bool AnchorEntity(TransformComponent xform, IMapGridComponent component)
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{
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return AnchorEntity(xform, component.Grid);
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}
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public bool AnchorEntity(TransformComponent xform, IMapGrid grid)
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{
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var tileIndices = grid.TileIndicesFor(xform.Coordinates);
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return AnchorEntity(xform, grid, tileIndices);
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}
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public bool AnchorEntity(TransformComponent xform)
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{
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if (!_mapManager.TryGetGrid(xform.GridID, out var grid))
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{
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return false;
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}
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var tileIndices = grid.TileIndicesFor(xform.Coordinates);
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return AnchorEntity(xform, grid, tileIndices);
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}
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public void Unanchor(TransformComponent xform)
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{
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//HACK: Client grid pivot causes this.
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//TODO: make grid components the actual grid
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if(xform.GridID == GridId.Invalid)
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return;
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UnanchorEntity(xform, Comp<IMapGridComponent>(_mapManager.GetGridEuid(xform.GridID)));
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}
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public void UnanchorEntity(TransformComponent xform, IMapGridComponent grid)
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{
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var tileIndices = grid.Grid.TileIndicesFor(xform.Coordinates);
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grid.Grid.RemoveFromSnapGridCell(tileIndices, xform.Owner);
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if (TryComp<PhysicsComponent>(xform.Owner, out var physicsComponent))
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{
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physicsComponent.BodyType = BodyType.Dynamic;
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}
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xform.SetAnchored(false);
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}
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#endregion
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#region Contains
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/// <summary>
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/// Returns whether the given entity is a child of this transform or one of its descendants.
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/// </summary>
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public bool ContainsEntity(TransformComponent xform, EntityUid entity)
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{
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return ContainsEntity(xform, entity, GetEntityQuery<TransformComponent>());
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}
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/// <inheritdoc cref="ContainsEntity(Robust.Shared.GameObjects.TransformComponent,Robust.Shared.GameObjects.EntityUid)"/>
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public bool ContainsEntity(TransformComponent xform, EntityUid entity, EntityQuery<TransformComponent> xformQuery)
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{
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return ContainsEntity(xform, xformQuery.GetComponent(entity), xformQuery);
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}
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/// <inheritdoc cref="ContainsEntity(Robust.Shared.GameObjects.TransformComponent,Robust.Shared.GameObjects.EntityUid)"/>
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public bool ContainsEntity(TransformComponent xform, TransformComponent entityTransform)
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{
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return ContainsEntity(xform, entityTransform, GetEntityQuery<TransformComponent>());
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}
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/// <inheritdoc cref="ContainsEntity(Robust.Shared.GameObjects.TransformComponent,Robust.Shared.GameObjects.EntityUid)"/>
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public bool ContainsEntity(TransformComponent xform, TransformComponent entityTransform, EntityQuery<TransformComponent> xformQuery)
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{
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// Is the entity the scene root
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if (!entityTransform.ParentUid.IsValid())
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return false;
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// Is this the direct parent of the entity
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if (xform.Owner == entityTransform.ParentUid)
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return true;
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// Recursively search up the parents for this object
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var parentXform = xformQuery.GetComponent(entityTransform.ParentUid);
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return ContainsEntity(xform, parentXform, xformQuery);
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}
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#endregion
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#region Component Lifetime
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private void OnCompInit(EntityUid uid, TransformComponent component, ComponentInit args)
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{
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// Children MAY be initialized here before their parents are.
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// We do this whole dance to handle this recursively,
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// setting _mapIdInitialized along the way to avoid going to the IMapComponent every iteration.
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static MapId FindMapIdAndSet(TransformComponent xform, IEntityManager entMan, EntityQuery<TransformComponent> xformQuery)
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{
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if (xform._mapIdInitialized)
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return xform.MapID;
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MapId value;
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if (xform.ParentUid.IsValid())
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{
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value = FindMapIdAndSet(xformQuery.GetComponent(xform.ParentUid), entMan, xformQuery);
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}
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else
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{
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// second level node, terminates recursion up the branch of the tree
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if (entMan.TryGetComponent(xform.Owner, out IMapComponent? mapComp))
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{
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value = mapComp.WorldMap;
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}
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else
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{
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throw new InvalidOperationException("Transform node does not exist inside scene tree!");
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}
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}
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xform.MapID = value;
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xform._mapIdInitialized = true;
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return value;
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}
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var xformQuery = GetEntityQuery<TransformComponent>();
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if (!component._mapIdInitialized)
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{
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FindMapIdAndSet(component, EntityManager, xformQuery);
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component._mapIdInitialized = true;
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}
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// Has to be done if _parent is set from ExposeData.
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if (component.ParentUid.IsValid())
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{
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// Note that _children is a SortedSet<EntityUid>,
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// so duplicate additions (which will happen) don't matter.
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xformQuery.GetComponent(component.ParentUid)._children.Add(uid);
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}
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component.GridID = component.GetGridIndex(xformQuery);
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component.RebuildMatrices();
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}
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private void OnCompStartup(EntityUid uid, TransformComponent component, ComponentStartup args)
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{
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// Re-Anchor the entity if needed.
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if (component._anchored && _mapManager.TryFindGridAt(component.MapPosition, out var grid))
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{
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if (!grid.IsAnchored(component.Coordinates, uid))
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{
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AnchorEntity(component, grid);
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}
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}
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else
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component._anchored = false;
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// Keep the cached matrices in sync with the fields.
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Dirty(component);
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var ev = new TransformStartupEvent(component);
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RaiseLocalEvent(uid, ref ev);
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}
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#endregion
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#region GridId
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/// <summary>
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/// Sets the <see cref="GridId"/> for the transformcomponent. Does not Dirty it.
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/// </summary>
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public void SetGridId(TransformComponent xform, GridId gridId)
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{
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SetGridId(xform, gridId, GetEntityQuery<TransformComponent>());
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}
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/// <inheritdoc cref="SetGridId"/> />
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private void SetGridId(TransformComponent xform, GridId gridId, EntityQuery<TransformComponent> xformQuery)
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{
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if (xform.GridID == gridId) return;
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SetGridIdRecursive(xform, gridId, xformQuery);
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}
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private static void SetGridIdRecursive(TransformComponent xform, GridId gridId, EntityQuery<TransformComponent> xformQuery)
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{
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xform._gridId = gridId;
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var childEnumerator = xform.ChildEnumerator;
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while (childEnumerator.MoveNext(out var child))
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{
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SetGridIdRecursive(xformQuery.GetComponent(child.Value), gridId, xformQuery);
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}
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}
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#endregion
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#region Parent
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public TransformComponent? GetParent(EntityUid uid)
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{
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return GetParent(uid, GetEntityQuery<TransformComponent>());
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}
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public TransformComponent? GetParent(EntityUid uid, EntityQuery<TransformComponent> xformQuery)
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{
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return GetParent(xformQuery.GetComponent(uid), xformQuery);
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}
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public TransformComponent? GetParent(TransformComponent xform)
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{
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return GetParent(xform, GetEntityQuery<TransformComponent>());
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}
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public TransformComponent? GetParent(TransformComponent xform, EntityQuery<TransformComponent> xformQuery)
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{
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if (!xform.ParentUid.IsValid()) return null;
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return xformQuery.GetComponent(xform.ParentUid);
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}
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/* TODO: Need to peel out relevant bits of AttachParent e.g. children updates.
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public void SetParent(TransformComponent xform, EntityUid parent, bool move = true)
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{
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if (xform.ParentUid == parent) return;
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if (!parent.IsValid())
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{
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xform.AttachToGridOrMap();
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return;
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}
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if (xform.Anchored)
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{
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xform.Anchored = false;
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}
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if (move)
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xform.AttachParent(parent);
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else
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xform._parent = parent;
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Dirty(xform);
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}
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*/
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#endregion
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#region States
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private void ActivateLerp(TransformComponent xform)
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{
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if (xform.ActivelyLerping)
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{
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return;
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}
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xform.ActivelyLerping = true;
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RaiseLocalEvent(xform.Owner, new TransformStartLerpMessage(xform));
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}
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internal void OnGetState(EntityUid uid, TransformComponent component, ref ComponentGetState args)
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{
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args.State = new TransformComponentState(
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component.LocalPosition,
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component.LocalRotation,
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component.ParentUid,
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component.NoLocalRotation,
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component.Anchored);
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}
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internal void OnHandleState(EntityUid uid, TransformComponent component, ref ComponentHandleState args)
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{
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if (args.Current is TransformComponentState newState)
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{
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var newParentId = newState.ParentID;
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var rebuildMatrices = false;
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// Update to new parent.
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// if the new one isn't valid (e.g. PVS) then we'll just return early after yeeting them to nullspace.
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if (component.ParentUid != newParentId)
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{
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if (!newParentId.IsValid())
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{
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component.DetachParentToNull();
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return;
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}
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else
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{
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if (!Exists(newParentId))
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{
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#if !EXCEPTION_TOLERANCE
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throw new InvalidOperationException($"Unable to find new parent {newParentId}! This probably means the server never sent it.");
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#else
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_logger.Error($"Unable to find new parent {newParentId}! Deleting {ToPrettyString(uid)}");
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QueueDel(uid);
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return;
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#endif
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}
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component.AttachParent(Transform(newParentId));
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}
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rebuildMatrices = true;
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}
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if (component.LocalRotation != newState.Rotation)
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{
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component._localRotation = newState.Rotation;
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rebuildMatrices = true;
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}
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if (!component.LocalPosition.EqualsApprox(newState.LocalPosition))
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{
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var oldPos = component.Coordinates;
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component._localPosition = newState.LocalPosition;
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var ev = new MoveEvent(uid, oldPos, component.Coordinates, component);
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DeferMoveEvent(ref ev);
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rebuildMatrices = true;
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}
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component._prevPosition = newState.LocalPosition;
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component._prevRotation = newState.Rotation;
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// Anchored currently does a TryFindGridAt internally which may fail in particularly... violent situations.
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if (newState.Anchored && !component.Anchored)
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{
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var iGrid = Comp<MapGridComponent>(_mapManager.GetGridEuid(component.GridID));
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AnchorEntity(component, iGrid);
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DebugTools.Assert(component.Anchored);
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}
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else
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{
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component.Anchored = newState.Anchored;
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}
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component._noLocalRotation = newState.NoLocalRotation;
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// This is not possible, because client entities don't exist on the server, so the parent HAS to be a shared entity.
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// If this assert fails, the code above that sets the parent is broken.
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DebugTools.Assert(!component.ParentUid.IsClientSide(), "Transform received a state, but is still parented to a client entity.");
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// Whatever happened on the client, these should still be correct
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DebugTools.Assert(component.ParentUid == newState.ParentID);
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DebugTools.Assert(component.Anchored == newState.Anchored);
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if (rebuildMatrices)
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{
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component.RebuildMatrices();
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}
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Dirty(component);
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}
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if (args.Next is TransformComponentState nextTransform)
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{
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component._nextPosition = nextTransform.LocalPosition;
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component._nextRotation = nextTransform.Rotation;
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component.LerpParent = nextTransform.ParentID;
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ActivateLerp(component);
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}
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else
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{
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// this should cause the lerp to do nothing
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component._nextPosition = null;
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component._nextRotation = null;
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component.LerpParent = EntityUid.Invalid;
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}
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}
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#endregion
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#region World Matrix
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[Pure]
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public Matrix3 GetWorldMatrix(EntityUid uid)
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{
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return Transform(uid).WorldMatrix;
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}
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// Temporary until it's moved here
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[Pure]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public Matrix3 GetWorldMatrix(TransformComponent component)
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{
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return component.WorldMatrix;
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}
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[Pure]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public Matrix3 GetWorldMatrix(EntityUid uid, EntityQuery<TransformComponent> xformQuery)
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{
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return GetWorldMatrix(xformQuery.GetComponent(uid));
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}
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[Pure]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public Matrix3 GetWorldMatrix(TransformComponent component, EntityQuery<TransformComponent> xformQuery)
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{
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return component.WorldMatrix;
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}
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#endregion
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#region World Position
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[Pure]
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public Vector2 GetWorldPosition(EntityUid uid)
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{
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return Transform(uid).WorldPosition;
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}
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// Temporary until it's moved here
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[Pure]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public Vector2 GetWorldPosition(TransformComponent component)
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{
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return component.WorldPosition;
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}
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[Pure]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public Vector2 GetWorldPosition(EntityUid uid, EntityQuery<TransformComponent> xformQuery)
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{
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return GetWorldPosition(xformQuery.GetComponent(uid));
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}
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[Pure]
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public Vector2 GetWorldPosition(TransformComponent component, EntityQuery<TransformComponent> xformQuery)
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{
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return component.WorldPosition;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public (Vector2 WorldPosition, Angle WorldRotation) GetWorldPositionRotation(TransformComponent component, EntityQuery<TransformComponent> xformQuery)
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{
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return component.GetWorldPositionRotation(xformQuery);
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}
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public void SetWorldPosition(EntityUid uid, Vector2 worldPos)
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{
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var xform = Transform(uid);
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SetWorldPosition(xform, worldPos);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void SetWorldPosition(TransformComponent component, Vector2 worldPos)
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{
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if (!component._parent.IsValid())
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{
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DebugTools.Assert("Parent is invalid while attempting to set WorldPosition - did you try to move root node?");
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return;
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}
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// world coords to parent coords
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var newPos = component.Parent!.InvWorldMatrix.Transform(worldPos);
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component.LocalPosition = newPos;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void SetWorldPosition(EntityUid uid, Vector2 worldPos, EntityQuery<TransformComponent> xformQuery)
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{
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var component = xformQuery.GetComponent(uid);
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SetWorldPosition(component, worldPos, xformQuery);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void SetWorldPosition(TransformComponent component, Vector2 worldPos, EntityQuery<TransformComponent> xformQuery)
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{
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if (!component._parent.IsValid())
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{
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DebugTools.Assert("Parent is invalid while attempting to set WorldPosition - did you try to move root node?");
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return;
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}
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|
|
// world coords to parent coords
|
|
var newPos = GetInvWorldMatrix(component._parent, xformQuery).Transform(worldPos);
|
|
component.LocalPosition = newPos;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region World Rotation
|
|
|
|
[Pure]
|
|
public Angle GetWorldRotation(EntityUid uid)
|
|
{
|
|
return Transform(uid).WorldRotation;
|
|
}
|
|
|
|
// Temporary until it's moved here
|
|
[Pure]
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public Angle GetWorldRotation(TransformComponent component)
|
|
{
|
|
return component.WorldRotation;
|
|
}
|
|
|
|
[Pure]
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public Angle GetWorldRotation(EntityUid uid, EntityQuery<TransformComponent> xformQuery)
|
|
{
|
|
return GetWorldRotation(xformQuery.GetComponent(uid));
|
|
}
|
|
|
|
[Pure]
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public Angle GetWorldRotation(TransformComponent component, EntityQuery<TransformComponent> xformQuery)
|
|
{
|
|
return component.WorldRotation;
|
|
}
|
|
|
|
public void SetWorldRotation(EntityUid uid, Angle angle)
|
|
{
|
|
var component = Transform(uid);
|
|
SetWorldRotation(component, angle);
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void SetWorldRotation(TransformComponent component, Angle angle)
|
|
{
|
|
var current = GetWorldRotation(component);
|
|
var diff = angle - current;
|
|
component.LocalRotation += diff;
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void SetWorldRotation(EntityUid uid, Angle angle, EntityQuery<TransformComponent> xformQuery)
|
|
{
|
|
SetWorldRotation(xformQuery.GetComponent(uid), angle, xformQuery);
|
|
}
|
|
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public void SetWorldRotation(TransformComponent component, Angle angle, EntityQuery<TransformComponent> xformQuery)
|
|
{
|
|
var current = GetWorldRotation(component, xformQuery);
|
|
var diff = angle - current;
|
|
component.LocalRotation += diff;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Inverse World Matrix
|
|
|
|
[Pure]
|
|
public Matrix3 GetInvWorldMatrix(EntityUid uid)
|
|
{
|
|
return Comp<TransformComponent>(uid).InvWorldMatrix;
|
|
}
|
|
|
|
// Temporary until it's moved here
|
|
[Pure]
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public Matrix3 GetInvWorldMatrix(TransformComponent component)
|
|
{
|
|
return component.InvWorldMatrix;
|
|
}
|
|
|
|
[Pure]
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public Matrix3 GetInvWorldMatrix(EntityUid uid, EntityQuery<TransformComponent> xformQuery)
|
|
{
|
|
return GetInvWorldMatrix(xformQuery.GetComponent(uid));
|
|
}
|
|
|
|
[Pure]
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public Matrix3 GetInvWorldMatrix(TransformComponent component, EntityQuery<TransformComponent> xformQuery)
|
|
{
|
|
return component.InvWorldMatrix;
|
|
}
|
|
|
|
#endregion
|
|
|
|
public MapId GetMapId(EntityUid? uid, TransformComponent? xform = null)
|
|
{
|
|
if (uid == null ||
|
|
!uid.Value.IsValid() ||
|
|
!Resolve(uid.Value, ref xform, false)) return MapId.Nullspace;
|
|
|
|
return xform.MapID;
|
|
}
|
|
}
|