71 lines
2.2 KiB
C#
71 lines
2.2 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.Collections.Generic;
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using System.Linq;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Orders;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Orders
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{
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public class GuardOrderGenerator : GenericSelectTarget
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{
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public GuardOrderGenerator(IEnumerable<Actor> subjects, string order, string cursor, MouseButton button)
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: base(subjects, order, cursor, button) { }
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protected override IEnumerable<Order> OrderInner(World world, CPos xy, MouseInput mi)
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{
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if (mi.Button != ExpectedButton)
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yield break;
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var target = FriendlyGuardableUnits(world, mi).FirstOrDefault();
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if (target == null)
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yield break;
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world.CancelInputMode();
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var queued = mi.Modifiers.HasModifier(Modifiers.Shift);
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yield return new Order(OrderName, null, Target.FromActor(target), queued, null, subjects.Where(s => s != target).ToArray());
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}
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public override void SelectionChanged(World world, IEnumerable<Actor> selected)
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{
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// Guarding doesn't work without AutoTarget, so require at least one unit in the selection to have it
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subjects = selected.Where(s => !s.IsDead && s.Info.HasTraitInfo<GuardInfo>());
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if (!subjects.Any(s => s.Info.HasTraitInfo<AutoTargetInfo>()))
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world.CancelInputMode();
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}
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public override string GetCursor(World world, CPos cell, int2 worldPixel, MouseInput mi)
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{
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if (!subjects.Any())
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return null;
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var multiple = subjects.Count() > 1;
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var canGuard = FriendlyGuardableUnits(world, mi)
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.Any(a => multiple || a != subjects.First());
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return canGuard ? Cursor : "move-blocked";
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}
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static IEnumerable<Actor> FriendlyGuardableUnits(World world, MouseInput mi)
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{
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return world.ScreenMap.ActorsAtMouse(mi)
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.Select(a => a.Actor)
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.Where(a => !a.IsDead &&
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a.AppearsFriendlyTo(world.LocalPlayer.PlayerActor) &&
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a.Info.HasTraitInfo<GuardableInfo>() &&
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!world.FogObscures(a));
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}
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}
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}
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