122 lines
3.2 KiB
C#
122 lines
3.2 KiB
C#
#region Copyright & License Information
|
|
/*
|
|
* Copyright 2007-2022 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 System;
|
|
using OpenRA.Traits;
|
|
|
|
namespace OpenRA.Mods.Common.Traits
|
|
{
|
|
[Desc("This unit can spawn and eject other actors while flying.")]
|
|
public class ParaDropInfo : TraitInfo, Requires<CargoInfo>
|
|
{
|
|
[Desc("Distance around the drop-point to unload troops.")]
|
|
public readonly WDist DropRange = WDist.FromCells(4);
|
|
|
|
[Desc("Wait at least this many ticks between each drop.")]
|
|
public readonly int DropInterval = 5;
|
|
|
|
[Desc("Sound to play when dropping.")]
|
|
public readonly string ChuteSound = null;
|
|
|
|
public override object Create(ActorInitializer init) { return new ParaDrop(init.Self, this); }
|
|
}
|
|
|
|
public class ParaDrop : ITick, ISync, INotifyRemovedFromWorld
|
|
{
|
|
readonly ParaDropInfo info;
|
|
readonly Actor self;
|
|
readonly Cargo cargo;
|
|
|
|
public event Action<Actor> OnRemovedFromWorld = self => { };
|
|
public event Action<Actor> OnEnteredDropRange = self => { };
|
|
public event Action<Actor> OnExitedDropRange = self => { };
|
|
|
|
[Sync]
|
|
bool inDropRange;
|
|
|
|
[Sync]
|
|
Target target;
|
|
|
|
[Sync]
|
|
int dropDelay;
|
|
|
|
bool checkForSuitableCell;
|
|
|
|
public ParaDrop(Actor self, ParaDropInfo info)
|
|
{
|
|
this.info = info;
|
|
this.self = self;
|
|
cargo = self.Trait<Cargo>();
|
|
}
|
|
|
|
public void SetLZ(CPos lz, bool checkLandingCell)
|
|
{
|
|
target = Target.FromCell(self.World, lz);
|
|
checkForSuitableCell = checkLandingCell;
|
|
}
|
|
|
|
void ITick.Tick(Actor self)
|
|
{
|
|
if (dropDelay > 0)
|
|
{
|
|
dropDelay--;
|
|
return;
|
|
}
|
|
|
|
var wasInDropRange = inDropRange;
|
|
inDropRange = target.IsInRange(self.CenterPosition, info.DropRange);
|
|
|
|
if (inDropRange && !wasInDropRange)
|
|
OnEnteredDropRange(self);
|
|
|
|
if (!inDropRange && wasInDropRange)
|
|
OnExitedDropRange(self);
|
|
|
|
// Are we able to drop the next trooper?
|
|
if (!inDropRange || cargo.IsEmpty() || !self.World.Map.Contains(self.Location))
|
|
return;
|
|
|
|
var dropActor = cargo.Peek();
|
|
var dropPositionable = dropActor.Trait<IPositionable>();
|
|
var dropCell = self.Location;
|
|
var dropSubCell = dropPositionable.GetAvailableSubCell(dropCell);
|
|
if (dropSubCell == SubCell.Invalid)
|
|
{
|
|
if (checkForSuitableCell)
|
|
return;
|
|
|
|
dropSubCell = SubCell.Any;
|
|
}
|
|
|
|
// Unload here
|
|
if (cargo.Unload(self) != dropActor)
|
|
throw new InvalidOperationException("Peeked cargo was not unloaded!");
|
|
|
|
self.World.AddFrameEndTask(w =>
|
|
{
|
|
dropPositionable.SetPosition(dropActor, dropCell, dropSubCell);
|
|
|
|
var dropPosition = dropActor.CenterPosition + new WVec(0, 0, self.CenterPosition.Z - dropActor.CenterPosition.Z);
|
|
dropPositionable.SetCenterPosition(dropActor, dropPosition);
|
|
w.Add(dropActor);
|
|
});
|
|
|
|
Game.Sound.Play(SoundType.World, info.ChuteSound, self.CenterPosition);
|
|
dropDelay = info.DropInterval;
|
|
}
|
|
|
|
void INotifyRemovedFromWorld.RemovedFromWorld(Actor self)
|
|
{
|
|
OnRemovedFromWorld(self);
|
|
}
|
|
}
|
|
}
|