55 lines
1.5 KiB
C#
55 lines
1.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
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* This file is part of OpenRA.
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*
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* OpenRA is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* OpenRA is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenRA. If not, see <http://www.gnu.org/licenses/>.
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*/
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#endregion
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namespace OpenRA.Traits.Activities
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{
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class Follow : IActivity
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{
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Actor Target;
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int Range;
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public Follow(Actor target, int range)
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{
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Target = target;
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Range = range;
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}
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public IActivity NextActivity { get; set; }
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public IActivity Tick( Actor self )
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{
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if (Target == null || Target.IsDead)
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return NextActivity;
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var inRange = ( Target.Location - self.Location ).LengthSquared < Range * Range;
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if( !inRange )
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return new Move( Target, Range ) { NextActivity = this };
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return this;
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}
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public void Cancel(Actor self)
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{
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Target = null;
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}
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}
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}
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