2473b8763b
While they may be only 'visual' in terms of influence/cell grid, they all do update CenterPosition, which is essentially the actual world position of the actor. 'Visual' would imply that it only affects the position where the actor is drawn, which is inaccurate. Furthermore, using the term 'Visual' here would make naming future methods/properties related to visual interpolation unnecessarily complicated, because that's where we might need a real 'Visual(Only)Position'.
90 lines
2.6 KiB
C#
90 lines
2.6 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2020 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System.Collections.Generic;
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using OpenRA.Activities;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Primitives;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Activities
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{
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public class LocalMoveIntoTarget : Activity
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{
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readonly Mobile mobile;
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readonly Target target;
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readonly Color? targetLineColor;
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readonly WDist targetMovementThreshold;
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WPos targetStartPos;
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public LocalMoveIntoTarget(Actor self, in Target target, WDist targetMovementThreshold, Color? targetLineColor = null)
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{
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mobile = self.Trait<Mobile>();
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this.target = target;
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this.targetMovementThreshold = targetMovementThreshold;
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this.targetLineColor = targetLineColor;
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}
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protected override void OnFirstRun(Actor self)
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{
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targetStartPos = target.Positions.PositionClosestTo(self.CenterPosition);
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}
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public override bool Tick(Actor self)
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{
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if (IsCanceling || target.Type == TargetType.Invalid)
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return true;
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if (mobile.IsTraitDisabled || mobile.IsTraitPaused)
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return false;
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var currentPos = self.CenterPosition;
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var targetPos = target.Positions.PositionClosestTo(currentPos);
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// Give up if the target has moved too far
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if (targetMovementThreshold > WDist.Zero && (targetPos - targetStartPos).LengthSquared > targetMovementThreshold.LengthSquared)
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return true;
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// Turn if required
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var delta = targetPos - currentPos;
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var facing = delta.HorizontalLengthSquared != 0 ? delta.Yaw : mobile.Facing;
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if (facing != mobile.Facing)
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{
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mobile.Facing = Util.TickFacing(mobile.Facing, facing, mobile.TurnSpeed);
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return false;
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}
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// Can complete the move in this step
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var speed = mobile.MovementSpeedForCell(self, self.Location);
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if (delta.LengthSquared <= speed * speed)
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{
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mobile.SetCenterPosition(self, targetPos);
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return true;
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}
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// Move towards the target
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mobile.SetCenterPosition(self, currentPos + delta * speed / delta.Length);
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return false;
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}
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public override IEnumerable<Target> GetTargets(Actor self)
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{
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yield return target;
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}
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public override IEnumerable<TargetLineNode> TargetLineNodes(Actor self)
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{
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if (targetLineColor != null)
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yield return new TargetLineNode(target, targetLineColor.Value);
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}
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}
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}
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