Everything is now OpenRA, not OpenRa

OpenRA.Game/Traits/Mobile.cs

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+#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.Collections.Generic;
+using System.Linq;
+
+namespace OpenRA.Traits
+{
+	public class MobileInfo : ITraitInfo
+	{
+		public readonly UnitMovementType MovementType = UnitMovementType.Wheel;
+
+		public object Create(Actor self) { return new Mobile(self); }
+	}
+
+	public class Mobile : IIssueOrder, IResolveOrder, IOccupySpace, IMovement
+	{
+		readonly Actor self;
+
+		[Sync]
+		int2 __fromCell;
+		public int2 fromCell
+		{
+			get { return __fromCell; }
+			set { self.World.WorldActor.traits.Get<UnitInfluence>().Remove(self, this); __fromCell = value; self.World.WorldActor.traits.Get<UnitInfluence>().Add(self, this); }
+		}
+		public int2 toCell
+		{
+			get { return self.Location; }
+			set
+			{
+				if (self.Location != value)
+				{
+					self.World.WorldActor.traits.Get<UnitInfluence>().Remove(self, this);
+					self.Location = value;
+					self.Owner.Shroud.Explore(self);
+				}
+				self.World.WorldActor.traits.Get<UnitInfluence>().Add(self, this);
+			}
+		}
+
+		public Mobile(Actor self)
+		{
+			this.self = self;
+			__fromCell = toCell;
+			self.World.WorldActor.traits.Get<UnitInfluence>().Add(self, this);
+		}
+
+		public void TeleportTo(Actor self, int2 xy)
+		{
+			fromCell = toCell = xy;
+			self.CenterLocation = Util.CenterOfCell(fromCell);
+		}
+
+		public Order IssueOrder(Actor self, int2 xy, MouseInput mi, Actor underCursor)
+		{
+			if (mi.Button == MouseButton.Left) return null;
+
+			// force-fire should *always* take precedence over move.
+			if (mi.Modifiers.HasModifier(Modifiers.Ctrl)) return null;
+		
+			if (underCursor != null && underCursor.Owner != null)
+			{
+				// force-move
+				if (!mi.Modifiers.HasModifier(Modifiers.Alt)) return null;
+				if (!self.World.IsActorCrushableByActor(underCursor, self)) return null;
+			}
+
+			if (Util.GetEffectiveSpeed(self) == 0) return null;		/* allow disabling move orders from modifiers */
+			if (xy == toCell) return null;
+			return new Order("Move", self, xy);
+		}
+
+		public void ResolveOrder(Actor self, Order order)
+		{
+			if (order.OrderString == "Move")
+			{
+				if (self.traits.GetOrDefault<IMovement>().CanEnterCell(order.TargetLocation))
+				{
+					self.CancelActivity();
+					self.QueueActivity(new Activities.Move(order.TargetLocation, 8));
+				}
+			}
+		}
+
+		public IEnumerable<int2> OccupiedCells()
+		{
+			return (fromCell == toCell)
+				? new[] { fromCell } 
+				: new[] { fromCell, toCell };
+		}
+
+		public UnitMovementType GetMovementType()
+		{
+			return self.Info.Traits.Get<MobileInfo>().MovementType;			
+		}
+		
+		public bool CanEnterCell(int2 a)
+		{
+			if (!self.World.WorldActor.traits.Get<BuildingInfluence>().CanMoveHere(a)) return false;
+
+			var crushable = true;
+			foreach (Actor actor in self.World.WorldActor.traits.Get<UnitInfluence>().GetUnitsAt(a))
+			{
+				if (actor == self) continue;
+				
+				if (!self.World.IsActorCrushableByActor(actor, self))
+				{
+					crushable = false;
+					break;
+				}
+			}
+			
+			if (!crushable) return false;
+			
+			return self.World.Map.IsInMap(a.X, a.Y) &&
+				TerrainCosts.Cost(GetMovementType(),
+					self.World.TileSet.GetWalkability(self.World.Map.MapTiles[a.X, a.Y])) < double.PositiveInfinity;
+		}
+
+		public IEnumerable<int2> GetCurrentPath()
+		{
+			var move = self.GetCurrentActivity() as Activities.Move;
+			if (move == null || move.path == null) return new int2[] { };
+			return Enumerable.Reverse(move.path);
+		}
+	}
+}