Second implementation of Sandworms

Fix tabs in AttackSwallow.cs

OpenRA.Mods.D2k/Sandworm.cs

@@ -0,0 +1,70 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 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. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using OpenRA.Mods.RA;
+using OpenRA.Mods.RA.Move;
+using OpenRA.Mods.RA.Render;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.D2k
+{
+	class SandwormInfo : Requires<RenderUnitInfo>, Requires<MobileInfo>, IOccupySpaceInfo
+	{
+		readonly public int WanderMoveRadius = 20;
+		readonly public string WormSignNotification = "WormSign";
+		
+		public object Create(ActorInitializer init) { return new Sandworm(this); }
+	}
+
+	class Sandworm : INotifyIdle
+	{
+		int ticksIdle;
+		int effectiveMoveRadius;
+		readonly int maxMoveRadius;
+
+		public Sandworm(SandwormInfo info)
+		{
+			maxMoveRadius = info.WanderMoveRadius;
+			effectiveMoveRadius = info.WanderMoveRadius;
+
+			// TODO: Someone familiar with how the sounds work should fix this:
+			// TODO: This should not be here. It should be same as "Enemy unit sighted".
+			//Sound.PlayNotification(self.Owner, "Speech", info.WormSignNotification, self.Owner.Country.Race);
+		}
+
+		// TODO: This copies AttackWander and builds on top of it. AttackWander should be revised.
+		public void TickIdle(Actor self)
+		{
+			var globalOffset = new WVec(0, -1024 * effectiveMoveRadius, 0).Rotate(WRot.FromFacing(self.World.SharedRandom.Next(255)));
+			var offset = new CVec(globalOffset.X/1024, globalOffset.Y/1024);
+			var targetlocation = self.Location + offset;
+
+			if (!self.World.Map.Bounds.Contains(targetlocation.X, targetlocation.Y))
+			{
+				// If MoveRadius is too big there might not be a valid cell to order the attack to (if actor is on a small island and can't leave)
+				if (++ticksIdle % 10 == 0)      // completely random number
+				{
+					effectiveMoveRadius--;
+				}
+				return;  // We'll be back the next tick; better to sit idle for a few seconds than prolongue this tick indefinitely with a loop
+			}
+
+			self.World.IssueOrder(new Order("AttackMove", self, false) { TargetLocation = targetlocation });
+
+			ticksIdle = 0;
+			effectiveMoveRadius = maxMoveRadius;
+		}
+
+		public bool CanAttackAtLocation(Actor self, CPos targetLocation)
+		{
+			return self.Trait<Mobile>().MovementSpeedForCell(self, targetLocation) != 0;
+		}
+	}
+}