61 lines
1.8 KiB
C#
61 lines
1.8 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2010 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 LICENSE.
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*/
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#endregion
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using System;
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using System.Linq;
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using OpenRA.Traits;
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namespace OpenRA.Mods.RA.Activities
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{
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public class HeliAttack : IActivity
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{
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Target target;
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public HeliAttack( Target target ) { this.target = target; }
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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.IsValid)
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return NextActivity;
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var limitedAmmo = self.traits.GetOrDefault<LimitedAmmo>();
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if (limitedAmmo != null && !limitedAmmo.HasAmmo())
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{
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self.QueueActivity(new HeliReturn());
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return NextActivity;
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}
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var unit = self.traits.Get<Unit>();
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var info = self.Info.Traits.Get<HelicopterInfo>();
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if (unit.Altitude != info.CruiseAltitude)
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{
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unit.Altitude += Math.Sign(info.CruiseAltitude - unit.Altitude);
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return this;
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}
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var range = self.GetPrimaryWeapon().Range - 1;
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var dist = target.CenterLocation - self.CenterLocation;
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var desiredFacing = Util.GetFacing(dist, unit.Facing);
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Util.TickFacing(ref unit.Facing, desiredFacing, self.Info.Traits.Get<UnitInfo>().ROT);
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var mobile = self.traits.WithInterface<IMove>().FirstOrDefault();
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var rawSpeed = .2f * mobile.MovementSpeedForCell(self, self.Location);
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if (!float2.WithinEpsilon(float2.Zero, dist, range * Game.CellSize))
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self.CenterLocation += (rawSpeed / dist.Length) * dist;
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return this;
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}
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public void Cancel(Actor self) { target = Target.None; NextActivity = null; }
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}
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}
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