Everything is now OpenRA, not OpenRa

OpenRA.Game/Network/Order.cs

@@ -0,0 +1,182 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it 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.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using System.IO;
+using System.Linq;
+
+namespace OpenRA
+{
+	public sealed class Order
+	{
+		public readonly string OrderString;
+		public readonly Actor Subject;
+		public readonly Actor TargetActor;
+		public readonly int2 TargetLocation;
+		public readonly string TargetString;
+		public bool IsImmediate;
+		
+		public Player Player { get { return Subject.Owner; } }
+
+		public Order(string orderString, Actor subject, 
+			Actor targetActor, int2 targetLocation, string targetString)
+		{
+			this.OrderString = orderString;
+			this.Subject = subject;
+			this.TargetActor = targetActor;
+			this.TargetLocation = targetLocation;
+			this.TargetString = targetString;
+		}
+
+		public Order(string orderString, Actor subject) 
+			: this(orderString, subject, null, int2.Zero, null) { }
+		public Order(string orderString, Actor subject, Actor targetActor)
+			: this(orderString, subject, targetActor, int2.Zero, null) { }
+		public Order(string orderString, Actor subject, int2 targetLocation)
+			: this(orderString, subject, null, targetLocation, null) { }
+		public Order(string orderString, Actor subject, string targetString)
+			: this(orderString, subject, null, int2.Zero, targetString) { }
+		public Order(string orderString, Actor subject, Actor targetActor, int2 targetLocation)
+			: this(orderString, subject, targetActor, targetLocation, null) { }
+		public Order(string orderString, Actor subject, Actor targetActor, string targetString)
+			: this(orderString, subject, targetActor, int2.Zero, targetString) { }
+		public Order(string orderString, Actor subject, int2 targetLocation, string targetString)
+			: this(orderString, subject, null, targetLocation, targetString) { }
+
+		public byte[] Serialize()
+		{
+			if (IsImmediate)		/* chat, whatever */
+			{
+				var ret = new MemoryStream();
+				var w = new BinaryWriter(ret);
+				w.Write((byte)0xfe);
+				w.Write(OrderString);
+				w.Write(TargetString);
+				return ret.ToArray();
+			}
+
+			switch (OrderString)
+			{
+				// Format:
+				//		u8    : orderID.
+				//		            0xFF: Full serialized order.
+				//		varies: rest of order.
+				default:
+					// TODO: specific serializers for specific orders.
+					{
+						var ret = new MemoryStream();
+						var w = new BinaryWriter(ret);
+						w.Write( (byte)0xFF );
+						w.Write(OrderString);
+						w.Write(UIntFromActor(Subject));
+						w.Write(UIntFromActor(TargetActor));
+						w.Write(TargetLocation.X);
+						w.Write(TargetLocation.Y);
+						w.Write(TargetString != null);
+						if (TargetString != null)
+							w.Write(TargetString);
+						return ret.ToArray();
+					}
+			}
+		}
+
+		public static Order Deserialize(World world, BinaryReader r)
+		{
+			switch (r.ReadByte())
+			{
+				case 0xFF:
+					{
+						var order = r.ReadString();
+						var subjectId = r.ReadUInt32();
+						var targetActorId = r.ReadUInt32();
+						var targetLocation = new int2(r.ReadInt32(), 0);
+						targetLocation.Y = r.ReadInt32();
+						var targetString = null as string;
+						if (r.ReadBoolean())
+							targetString = r.ReadString();
+
+						Actor subject, targetActor;
+						if( !TryGetActorFromUInt( world, subjectId, out subject ) || !TryGetActorFromUInt( world, targetActorId, out targetActor ) )
+							return null;
+
+						return new Order( order, subject, targetActor, targetLocation, targetString);
+					}
+
+				case 0xfe:
+					{
+						var name = r.ReadString();
+						var data = r.ReadString();
+
+						return new Order( name, null, data ) { IsImmediate = true };
+					}
+
+				default:
+					throw new NotImplementedException();
+			}
+		}
+
+		static uint UIntFromActor(Actor a)
+		{
+			if (a == null) return 0xffffffff;
+			return a.ActorID;
+		}
+
+		static bool TryGetActorFromUInt(World world, uint aID, out Actor ret )
+		{
+			if( aID == 0xFFFFFFFF )
+			{
+				ret = null;
+				return true;
+			}
+			else
+			{
+				foreach( var a in world.Actors.Where( x => x.ActorID == aID ) )
+				{
+					ret = a;
+					return true;
+				}
+				ret = null;
+				return false;
+			}
+		}
+
+		// Named constructors for Orders.
+		// Now that Orders are resolved by individual Actors, these are weird; you unpack orders manually, but not pack them.
+		public static Order Chat(string text)
+		{
+			return new Order("Chat", null, text) { IsImmediate = true };
+		}
+
+		public static Order StartProduction(Player subject, string item)
+		{
+			return new Order("StartProduction", subject.PlayerActor, item );
+		}
+
+		public static Order PauseProduction(Player subject, string item, bool pause)
+		{
+			return new Order("PauseProduction", subject.PlayerActor, new int2( pause ? 1 : 0, 0 ), item);
+		}
+
+		public static Order CancelProduction(Player subject, string item)
+		{
+			return new Order("CancelProduction", subject.PlayerActor, item);
+		}
+	}
+}