Files
OpenRA/OpenRA.Mods.RA/Crates/DuplicateUnitCrateAction.cs
2014-08-29 23:00:53 -05:00

122 lines
3.9 KiB
C#

#region Copyright & License Information
/*
* Copyright 2007-2014 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. For more information,
* see COPYING.
*/
#endregion
using System.Collections.Generic;
using System.Linq;
using OpenRA.Mods.RA.Move;
using OpenRA.Primitives;
using OpenRA.Traits;
namespace OpenRA.Mods.RA.Crates
{
[Desc("Creates duplicates of the actor that collects the crate.")]
class DuplicateUnitCrateActionInfo : CrateActionInfo
{
[Desc("The maximum number of duplicates to make.")]
public readonly int MaxAmount = 2;
[Desc("The minimum number of duplicates to make.","Overrules MaxDuplicatesWorth.")]
public readonly int MinAmount = 1;
[Desc("The maximum total cost allowed for the duplicates.","Duplication stops if the total worth will exceed this number.","-1 = no limit")]
public readonly int MaxDuplicatesWorth = -1;
[Desc("The list of unit types we are allowed to duplicate.")]
public readonly string[] ValidDuplicateTypes = { "Ground", "Water" };
[Desc("Which races this crate action can occur for.")]
public readonly string[] ValidRaces = { };
[Desc("Is the new duplicates given to a specific owner, regardless of whom collected it?")]
public readonly string Owner = null;
public override object Create(ActorInitializer init) { return new DuplicateUnitCrateAction(init.self, this); }
}
class DuplicateUnitCrateAction : CrateAction
{
public readonly DuplicateUnitCrateActionInfo Info;
readonly List<CPos> usedCells = new List<CPos>();
public DuplicateUnitCrateAction(Actor self, DuplicateUnitCrateActionInfo info)
: base(self, info) { Info = info; }
public bool CanGiveTo(Actor collector)
{
if (Info.ValidRaces.Any() && !Info.ValidRaces.Contains(collector.Owner.Country.Race))
return false;
var targetable = collector.Info.Traits.GetOrDefault<ITargetableInfo>();
if (targetable == null ||
!Info.ValidDuplicateTypes.Intersect(targetable.GetTargetTypes()).Any())
return false;
if (!GetSuitableCells(collector.Location, collector.Info.Name).Any()) return false;
return true;
}
public override int GetSelectionShares(Actor collector)
{
if (!CanGiveTo(collector)) return 0;
return base.GetSelectionShares(collector);
}
public override void Activate(Actor collector)
{
int AllowedWorthLeft = Info.MaxDuplicatesWorth;
int DupesMade = 0;
while ((DupesMade < Info.MaxAmount) && (AllowedWorthLeft > 0) || (DupesMade < Info.MinAmount))
{
//If the collector has a cost, and we have a max duplicate worth, then update how much dupe worth is left
var unitCost = collector.Info.Traits.Get<ValuedInfo>().Cost;
AllowedWorthLeft -= (Info.MaxDuplicatesWorth > 0) ? unitCost : 0;
if ((AllowedWorthLeft < 0) && (DupesMade >= Info.MinAmount))
break;
DupesMade++;
var location = ChooseEmptyCellNear(collector, collector.Info.Name);
if (location != null)
{
usedCells.Add(location.Value);
collector.World.AddFrameEndTask(
w => w.CreateActor(collector.Info.Name, new TypeDictionary
{
new LocationInit(location.Value),
new OwnerInit(Info.Owner ?? collector.Owner.InternalName)
}));
}
}
base.Activate(collector);
}
IEnumerable<CPos> GetSuitableCells(CPos near, string unitName)
{
var mi = self.World.Map.Rules.Actors[unitName].Traits.Get<MobileInfo>();
for (var i = -3; i < 4; i++)
for (var j = -3; j < 4; j++)
if (mi.CanEnterCell(self.World, self, near + new CVec(i, j)))
yield return near + new CVec(i, j);
}
CPos? ChooseEmptyCellNear(Actor a, string unit)
{
var possibleCells = GetSuitableCells(a.Location, unit).Where(c => !usedCells.Contains(c)).ToArray();
if (possibleCells.Length == 0)
return null;
return possibleCells.Random(self.World.SharedRandom);
}
}
}