Files
OpenRA/OpenRA.Mods.Common/Traits/EjectOnDeath.cs

108 lines
3.3 KiB
C#

#region Copyright & License Information
/*
* Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
* This file is part of OpenRA, which is free software. It is made
* available to you under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version. For more
* information, see COPYING.
*/
#endregion
using OpenRA.Mods.Common.Activities;
using OpenRA.Primitives;
using OpenRA.Traits;
namespace OpenRA.Mods.Common.Traits
{
[Desc("Eject a ground soldier or a paratrooper while in the air.")]
public class EjectOnDeathInfo : ConditionalTraitInfo
{
[ActorReference]
[Desc("Name of the unit to eject. This actor type needs to have the Parachutable trait defined.")]
public readonly string PilotActor = "E1";
[Desc("Probability that the aircraft's pilot gets ejected once the aircraft is destroyed.")]
public readonly int SuccessRate = 50;
[Desc("Sound to play when ejecting the pilot from the aircraft.")]
public readonly string ChuteSound = null;
[Desc("Can a destroyed aircraft eject its pilot while it has not yet fallen to ground level?")]
public readonly bool EjectInAir = false;
[Desc("Can a destroyed aircraft eject its pilot when it falls to ground level?")]
public readonly bool EjectOnGround = false;
[Desc("Risks stuck units when they don't have the Paratrooper trait.")]
public readonly bool AllowUnsuitableCell = false;
public override object Create(ActorInitializer init) { return new EjectOnDeath(init.Self, this); }
}
public class EjectOnDeath : ConditionalTrait<EjectOnDeathInfo>, INotifyKilled
{
public EjectOnDeath(Actor self, EjectOnDeathInfo info)
: base(info) { }
void INotifyKilled.Killed(Actor self, AttackInfo e)
{
if (IsTraitDisabled || self.Owner.WinState == WinState.Lost || !self.World.Map.Contains(self.Location))
return;
var r = self.World.SharedRandom.Next(1, 100);
if (r <= 100 - Info.SuccessRate)
return;
var cp = self.CenterPosition;
var inAir = !self.IsAtGroundLevel();
if ((inAir && !Info.EjectInAir) || (!inAir && !Info.EjectOnGround))
return;
var pilot = self.World.CreateActor(false, Info.PilotActor.ToLowerInvariant(),
new TypeDictionary { new OwnerInit(self.Owner), new LocationInit(self.Location) });
var pilotPositionable = pilot.TraitOrDefault<IPositionable>();
var pilotCell = self.Location;
var pilotSubCell = pilotPositionable.GetAvailableSubCell(pilotCell);
if (pilotSubCell == SubCell.Invalid)
{
if (!Info.AllowUnsuitableCell)
{
pilot.Dispose();
return;
}
pilotSubCell = SubCell.Any;
}
if (inAir)
{
self.World.AddFrameEndTask(w =>
{
pilotPositionable.SetPosition(pilot, pilotCell, pilotSubCell);
var dropPosition = pilot.CenterPosition + new WVec(0, 0, self.CenterPosition.Z - pilot.CenterPosition.Z);
pilotPositionable.SetVisualPosition(pilot, dropPosition);
w.Add(pilot);
});
Game.Sound.Play(SoundType.World, Info.ChuteSound, cp);
}
else
{
self.World.AddFrameEndTask(w =>
{
w.Add(pilot);
pilotPositionable.SetPosition(pilot, pilotCell, pilotSubCell);
var pilotMobile = pilot.TraitOrDefault<Mobile>();
if (pilotMobile != null)
pilotMobile.Nudge(pilot, pilot, true);
});
}
}
}
}