Renamed Upgrades directory to Conditions.

OpenRA.Mods.Common/Traits/Conditions/GrantConditionOnTerrain.cs

@@ -0,0 +1,67 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 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.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	public class GrantConditionOnTerrainInfo : ITraitInfo
+	{
+		[FieldLoader.Require]
+		[GrantedConditionReference]
+		[Desc("Condition to grant.")]
+		public readonly string Condition = null;
+
+		[FieldLoader.Require]
+		[Desc("Terrain names to trigger the condition.")]
+		public readonly string[] TerrainTypes = { };
+
+		public object Create(ActorInitializer init) { return new GrantConditionOnTerrain(init, this); }
+	}
+
+	public class GrantConditionOnTerrain : INotifyCreated, ITick
+	{
+		readonly GrantConditionOnTerrainInfo info;
+
+		ConditionManager conditionManager;
+		int conditionToken = ConditionManager.InvalidConditionToken;
+		string previousTerrain;
+
+		public GrantConditionOnTerrain(ActorInitializer init, GrantConditionOnTerrainInfo info)
+		{
+			this.info = info;
+		}
+
+		void INotifyCreated.Created(Actor self)
+		{
+			conditionManager = self.TraitOrDefault<ConditionManager>();
+		}
+
+		public void Tick(Actor self)
+		{
+			if (conditionManager == null)
+				return;
+
+			var currentTerrain = self.World.Map.GetTerrainInfo(self.Location).Type;
+			var wantsGranted = info.TerrainTypes.Contains(currentTerrain);
+			if (currentTerrain != previousTerrain)
+			{
+				if (wantsGranted && conditionToken == ConditionManager.InvalidConditionToken)
+					conditionToken = conditionManager.GrantCondition(self, info.Condition);
+				else if (!wantsGranted && conditionToken != ConditionManager.InvalidConditionToken)
+					conditionToken = conditionManager.RevokeCondition(self, conditionToken);
+			}
+
+			previousTerrain = currentTerrain;
+		}
+	}
+}