69 lines
1.5 KiB
C#
69 lines
1.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2014 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. For more information,
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* see COPYING.
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*/
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#endregion
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using System.Collections.Generic;
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using System.Linq;
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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 Drag : Activity
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{
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readonly IPositionable positionable;
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readonly IMove movement;
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readonly IEnumerable<IDisableMove> moveDisablers;
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WPos start, end;
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int length;
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int ticks = 0;
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public Drag(Actor self, WPos start, WPos end, int length)
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{
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positionable = self.Trait<IPositionable>();
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movement = self.TraitOrDefault<IMove>();
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moveDisablers = self.TraitsImplementing<IDisableMove>();
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this.start = start;
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this.end = end;
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this.length = length;
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}
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public override Activity Tick(Actor self)
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{
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if (moveDisablers.Any(d => d.MoveDisabled(self)))
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return this;
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var pos = length > 1
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? WPos.Lerp(start, end, ticks, length - 1)
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: end;
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positionable.SetVisualPosition(self, pos);
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if (++ticks >= length)
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{
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if (movement != null)
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movement.IsMoving = false;
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return NextActivity;
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}
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if (movement != null)
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movement.IsMoving = true;
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return this;
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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.FromPos(end);
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}
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// Cannot be cancelled
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public override void Cancel(Actor self) { }
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}
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}
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