97 lines
2.7 KiB
C#
97 lines
2.7 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
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* This file is part of OpenRA.
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*
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* OpenRA is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* OpenRA is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenRA. If not, see <http://www.gnu.org/licenses/>.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using OpenRA.GameRules;
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using OpenRA.Traits;
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namespace OpenRA
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{
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public static class Exts
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{
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public static bool HasModifier(this Modifiers k, Modifiers mod)
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{
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return (k & mod) == mod;
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}
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public static IEnumerable<T> SymmetricDifference<T>(this IEnumerable<T> xs, IEnumerable<T> ys)
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{
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// this is probably a shockingly-slow way to do this, but it's concise.
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return xs.Except(ys).Concat(ys.Except(xs));
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}
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public static float Product(this IEnumerable<float> xs)
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{
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return xs.Aggregate(1f, (a, x) => a * x);
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}
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public static WeaponInfo GetPrimaryWeapon(this Actor self)
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{
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var info = self.Info.Traits.GetOrDefault<AttackBaseInfo>();
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if (info == null) return null;
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var weapon = info.PrimaryWeapon;
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if (weapon == null) return null;
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return Rules.Weapons[weapon.ToLowerInvariant()];
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}
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public static WeaponInfo GetSecondaryWeapon(this Actor self)
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{
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var info = self.Info.Traits.GetOrDefault<AttackBaseInfo>();
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if (info == null) return null;
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var weapon = info.SecondaryWeapon;
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if (weapon == null) return null;
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return Rules.Weapons[weapon.ToLowerInvariant()];
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}
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public static int GetMaxHP(this Actor self)
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{
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var oai = self.Info.Traits.GetOrDefault<OwnedActorInfo>();
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if (oai == null) return 0;
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return oai.HP;
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}
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public static V GetOrAdd<K, V>( this Dictionary<K, V> d, K k )
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where V : new()
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{
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return d.GetOrAdd( k, _ => new V() );
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}
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public static V GetOrAdd<K, V>( this Dictionary<K, V> d, K k, Func<K, V> createFn )
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{
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V ret;
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if( !d.TryGetValue( k, out ret ) )
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d.Add( k, ret = createFn( k ) );
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return ret;
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}
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public static T Random<T>(this IEnumerable<T> ts, Thirdparty.Random r)
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{
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var xs = ts.ToArray();
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return xs[r.Next(xs.Length)];
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}
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}
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}
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