Restructuring orders.

OpenRa.Game/UnitOrders.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using OpenRa.Game.Traits;
+
+namespace OpenRa.Game
+{
+	static class UnitOrders
+	{
+		public static void ProcessOrder( Order order )
+		{
+			switch( order.OrderString )
+			{
+			case "Move":
+				{
+					var mobile = order.Subject.traits.Get<Mobile>();
+					mobile.Cancel( order.Subject );
+					mobile.QueueActivity( new Mobile.MoveTo( order.TargetLocation ) );
+
+					var attackBase = order.Subject.traits.WithInterface<AttackBase>().FirstOrDefault();
+					if( attackBase != null )
+						attackBase.target = null;	/* move cancels attack order */
+					break;
+				}
+			case "Attack":
+				{
+					const int RangeTolerance = 1;	/* how far inside our maximum range we should try to sit */
+					var mobile = order.Subject.traits.GetOrDefault<Mobile>();
+					var weapon = order.Subject.unitInfo.Primary ?? order.Subject.unitInfo.Secondary;
+
+					mobile.Cancel( order.Subject );
+					// TODO: this block should be a separate activity; "MoveNear", maybe?
+					{
+						/* todo: choose the appropriate weapon, when only one works against this target */
+						var range = Rules.WeaponInfo[ weapon ].Range;
+
+						mobile.QueueActivity(
+							new Mobile.MoveTo( order.TargetActor,
+								Math.Max( 0, (int)range - RangeTolerance ) ) );
+					}
+
+					order.Subject.traits.Get<AttackTurreted>().target = order.TargetActor;
+					break;
+				}
+			case "DeployMcv":
+				{
+					var mobile = order.Subject.traits.Get<Mobile>();
+					mobile.QueueActivity( new Mobile.Turn( 96 ) );
+					mobile.QueueActivity( new Traits.Activities.DeployMcv() );
+					break;
+				}
+			case "PlaceBuilding":
+				{
+					Game.world.AddFrameEndTask( _ =>
+					{
+						var building = Rules.UnitInfo[ order.TargetString ];
+						Log.Write( "Player \"{0}\" builds {1}", order.Player.PlayerName, building.Name );
+
+						//Adjust placement for cursor to be in middle
+						Game.world.Add( new Actor( building.Name, order.TargetLocation - GameRules.Footprint.AdjustForBuildingSize( building.Name ), order.Player ) );
+
+						Game.controller.orderGenerator = null;
+						Game.worldRenderer.uiOverlay.KillOverlay();
+					} );
+					break;
+				}
+			default:
+				throw new NotImplementedException();
+			}
+		}
+	}
+}