68 lines
1.9 KiB
C#
68 lines
1.9 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;
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using OpenRA.Activities;
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using OpenRA.Mods.Common.Traits;
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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 FallToEarth : Activity
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{
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readonly Aircraft aircraft;
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readonly FallsToEarthInfo info;
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int acceleration;
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int spin;
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public FallToEarth(Actor self, FallsToEarthInfo info)
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{
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this.info = info;
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IsInterruptible = false;
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aircraft = self.Trait<Aircraft>();
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if (!info.MaximumSpinSpeed.HasValue || info.MaximumSpinSpeed.Value != WAngle.Zero)
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acceleration = self.World.SharedRandom.Next(2) * 2 - 1;
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}
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public override bool Tick(Actor self)
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{
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if (self.World.Map.DistanceAboveTerrain(self.CenterPosition).Length <= 0)
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{
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if (info.ExplosionWeapon != null)
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{
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// Use .FromPos since this actor is killed. Cannot use Target.FromActor
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info.ExplosionWeapon.Impact(Target.FromPos(self.CenterPosition), self);
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}
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self.Kill(self);
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Cancel(self);
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return true;
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}
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if (acceleration != 0)
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{
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if (!info.MaximumSpinSpeed.HasValue || Math.Abs(spin) < info.MaximumSpinSpeed.Value.Angle)
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spin += 4 * acceleration; // TODO: Possibly unhardcode this
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// Allow for negative spin values and convert from facing to angle units
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aircraft.Facing = new WAngle(aircraft.Facing.Angle + spin);
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}
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var move = info.Moves ? aircraft.FlyStep(aircraft.Facing) : WVec.Zero;
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move -= new WVec(WDist.Zero, WDist.Zero, info.Velocity);
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aircraft.SetPosition(self, aircraft.CenterPosition + move);
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return false;
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}
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}
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}
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