# HG changeset patch
# User IBBoard <dev@ibboard.co.uk>
# Date 1301774810 0
# Node ID 36be56d9b9c447e2354a526380754081a9b896db
# Parent  f56254f50ce5cf9458de8870bd096cb42ebed88d
Re #27: Define unit requirements
 * Copy and paste first requirement that does "requirement for unit type"

diff -r f56254f50ce5 -r 36be56d9b9c4 IBBoard.WarFoundry.API.csproj
--- a/IBBoard.WarFoundry.API.csproj	Wed Mar 30 19:09:28 2011 +0000
+++ b/IBBoard.WarFoundry.API.csproj	Sat Apr 02 20:06:50 2011 +0000
@@ -188,6 +188,7 @@
     <Compile Include="api\Objects\Requirement\RequiresAtLeastNUnitsRequirement.cs" />
     <Compile Include="api\Objects\Requirement\UnitCountRequirementData.cs" />
     <Compile Include="api\Objects\Requirement\RequiresNoMoreThanNOfUnitTypeRequirement.cs" />
+    <Compile Include="api\Objects\Requirement\UnitRequiresAtLeastNUnitsRequirement.cs" />
   </ItemGroup>
   <ItemGroup>
     <Reference Include="System.Xml" />
diff -r f56254f50ce5 -r 36be56d9b9c4 api/Objects/Requirement/RequiresAtLeastNUnitsRequirement.cs
--- a/api/Objects/Requirement/RequiresAtLeastNUnitsRequirement.cs	Wed Mar 30 19:09:28 2011 +0000
+++ b/api/Objects/Requirement/RequiresAtLeastNUnitsRequirement.cs	Sat Apr 02 20:06:50 2011 +0000
@@ -36,7 +36,7 @@
 		/// <param name='toArmy'>
 		/// The army to add the object to.
 		/// </param>
-		public bool AllowsAdding(WarFoundryObject wfObject, Army toArmy)
+		public virtual bool AllowsAdding(WarFoundryObject wfObject, Army toArmy)
 		{
 			return this.ValidatesArmy(toArmy);
 		}
diff -r f56254f50ce5 -r 36be56d9b9c4 api/Objects/Requirement/UnitRequiresAtLeastNUnitsRequirement.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/api/Objects/Requirement/UnitRequiresAtLeastNUnitsRequirement.cs	Sat Apr 02 20:06:50 2011 +0000
@@ -0,0 +1,45 @@
+// This file (UnitRequiresAtLeastNUnitsRequirement.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2011 IBBoard
+// 
+// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
+using System;
+using System.Collections.Generic;
+using IBBoard.WarFoundry.API.Objects;
+
+namespace IBBoard.WarFoundry.API.Objects.Requirement
+{
+	/// <summary>
+	/// A requirement where a UnitType requires at least N units of one or more unit types before any number of that object can be taken in an army.
+	/// </summary>
+	public class UnitRequiresAtLeastNUnitsRequirement : RequiresAtLeastNUnitsRequirement
+	{
+		private UnitType requirementOnType;
+
+		public UnitRequiresAtLeastNUnitsRequirement(UnitType requirementOn) : base()
+		{
+			requirementOnType = requirementOn;
+		}
+
+		/// <summary>
+		/// Checks whether the supplied WarFoundryObject can be added to the supplied army.
+		/// </summary>
+		/// <returns>
+		/// <c>true</c> if the object can be added, else <c>false</c>
+		/// </returns>
+		/// <param name='wfObject'>
+		/// The object that we want to add. This may be involved in the check, or it may not affect the evaluation of the requirement
+		/// </param>
+		/// <param name='toArmy'>
+		/// The army to add the object to.
+		/// </param>
+		public override bool AllowsAdding(WarFoundryObject wfObject, Army toArmy)
+		{
+			return IsApplicable(wfObject, toArmy) ? base.ValidatesArmy(toArmy) : true;
+		}
+
+		public bool IsApplicable (WarFoundryObject wfObject, Army toArmy)
+		{
+			return toArmy.GetUnitTypeCount(requirementOnType) > 0 || requirementOnType.Equals(wfObject) || (wfObject is Unit && requirementOnType.Equals(((Unit)wfObject).UnitType));
+		}
+	}
+}
+