Some thoughts towards improving our bogus idle handling. Untested.

OpenRA.Game/Actor.cs

@@ -68,7 +68,7 @@ namespace OpenRA
 
 		public void Tick()
 		{
-			if (currentActivity == null)
+			if (currentActivity == null || currentActivity is Idle)
 				foreach (var ni in TraitsImplementing<INotifyIdle>())
 					ni.TickIdle(this);
 

OpenRA.Mods.RA/Activities/IdleAnimation.cs

@@ -1,47 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2010 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 LICENSE.
- */
-#endregion
-
-using System.Collections.Generic;
-using OpenRA.Mods.RA.Render;
-using OpenRA.Traits;
-using OpenRA.Traits.Activities;
-
-namespace OpenRA.Mods.RA.Activities
-{
-	public class IdleAnimation : Idle
-	{
-		string sequence;
-		int delay;
-		
-		public IdleAnimation(string sequence, int delay)
-		{			
-			this.sequence = sequence;
-			this.delay = delay;
-		}
-
-		bool active = true;
-		public override IActivity Tick(Actor self)
-		{
-			if (!active) return NextActivity;
-			
-			if (delay > 0 && --delay == 0)
-				self.Trait<RenderInfantry>().anim.PlayThen(sequence, () => active = false);
-			
-			return this;
-		}
-
-		protected override bool OnCancel( Actor self )
-		{
-			active = false;
-			return true;
-		}
-
-	}
-}

OpenRA.Mods.RA/AutoHeal.cs

@@ -18,43 +18,6 @@ namespace OpenRA.Mods.RA
 
 	class AutoHeal : INotifyIdle
 	{
-		public void TickIdle( Actor self )
-		{
-			self.QueueActivity( new IdleHealActivity() );
-		}
-
-		class IdleHealActivity : Idle
-		{
-			Actor currentTarget;
-			IActivity inner;
-
-			public override IActivity Tick( Actor self )
-			{
-				if( inner == null )
-				{
-					if( NextActivity != null )
-						return NextActivity;
-
-					var attack = self.Trait<AttackBase>();
-					var range = attack.GetMaximumRange();
-
-					if (NeedsNewTarget(self))
-					{
-						currentTarget = ChooseTarget(self, range);
-						if( currentTarget != null )
-							inner = self.Trait<AttackBase>().GetAttackActivity(self, Target.FromActor( currentTarget ), false );
-					}
-				}
-				if( inner != null )
-				{
-					if( NeedsNewTarget(self) )
-						inner.Cancel( self );
-					inner = Util.RunActivity( self, inner );
-				}
-
-				return this;
-			}
-
 		bool NeedsNewTarget(Actor self)
 		{
 			var attack = self.Trait<AttackBase>();
@@ -84,6 +47,19 @@ namespace OpenRA.Mods.RA
 				.OrderBy(a => (a.CenterLocation - self.CenterLocation).LengthSquared)
 				.FirstOrDefault();
 		}
+	
+		Actor currentTarget;
+		public void TickIdle( Actor self )
+		{
+			var attack = self.Trait<AttackBase>();
+			var range = attack.GetMaximumRange();
+
+			if (NeedsNewTarget(self))
+			{
+				var currentTarget = ChooseTarget(self, range);
+				if( currentTarget != null )
+					self.QueueActivity(self.Trait<AttackBase>().GetAttackActivity(self, Target.FromActor( currentTarget ), false ));
+			}
 		}
 	}
 }

OpenRA.Mods.RA/AutoTarget.cs

@@ -39,33 +39,13 @@ namespace OpenRA.Mods.RA
 
 		public void TickIdle( Actor self )
 		{
-			self.QueueActivity( new IdleAttackActivity() );
-		}
-
-		class IdleAttackActivity : Idle
-		{
-			Actor currentTarget;
-			IActivity inner;
-
-			public override IActivity Tick( Actor self )
-			{
-				if( NextActivity != null && inner != null )
-					inner.Cancel( self );
-				if( inner == null )
-				{
-					if( NextActivity != null )
-						return NextActivity;
-
 			var attack = self.Trait<AttackBase>();
-					currentTarget = attack.ScanForTarget(self, null);
+			var currentTarget = attack.ScanForTarget(self, null);
 			if( currentTarget != null )
-						inner = attack.GetAttackActivity( self, Target.FromActor(currentTarget), self.Info.Traits.Get<AutoTargetInfo>().AllowMovement );
+				self.QueueActivity(attack.GetAttackActivity( self,
-				}
+				                                            Target.FromActor(currentTarget),
-				if( inner != null )
+				                                            self.Info.Traits.Get<AutoTargetInfo>().AllowMovement
-					inner = Util.RunActivity( self, inner );
+				                                            ));
-
-				return this;
-			}
 		}
 	}
 }

OpenRA.Mods.RA/IdleAnimation.cs

@@ -9,6 +9,7 @@
 #endregion
 
 using OpenRA.Traits;
+using OpenRA.Mods.RA.Render;
 
 namespace OpenRA.Mods.RA
 {
@@ -20,24 +21,61 @@ namespace OpenRA.Mods.RA
 	}
 
 	// infantry prone behavior
-	class IdleAnimation : INotifyDamage, INotifyIdle
+	class IdleAnimation : ITick, INotifyIdle
 	{
 		IdleAnimationInfo Info;
+		string sequence;
+		int delay;
+		bool active, waiting;
+
 		public IdleAnimation(IdleAnimationInfo info)
 		{
 			Info = info;
 		}
 
-		public void Damaged(Actor self, AttackInfo e)
+		public void Tick(Actor self)
 		{		
-			if (self.GetCurrentActivity() is Activities.IdleAnimation)
+			if (active)
-				self.CancelActivity();
+			{
+				//System.Console.WriteLine("active: {0} ({1})", self.Info.Name, self.ActorID);
+				return;
+			}
+			if (!self.IsIdle)
+			{
+				//System.Console.WriteLine("notidle: {0} ({1}) ",self.Info.Name, self.ActorID);
+				active = false;
+				waiting = false;
+				return;
+			}
+			
+			if (delay > 0 && --delay == 0)
+			{
+				System.Console.WriteLine("activate: {0} ({1})",self.Info.Name, self.ActorID);
+				active = true;
+				waiting = false;
+				self.Trait<RenderInfantry>().anim.PlayThen(sequence, () =>
+				{
+					//System.Console.WriteLine("finished: {0} ({1}) ",self.Info.Name, self.ActorID);
+					active = false;
+				});
+			}
 		}
 		
 		public void TickIdle(Actor self)
 		{
-			self.QueueActivity(new Activities.IdleAnimation(Info.Animations.Random(self.World.SharedRandom),
+			//if (active)
-			                                                Info.IdleWaitTicks));
+			//	System.Console.WriteLine("idleactive: {0} ({1}) ",self.Info.Name, self.ActorID);
+			
+			//if (waiting)
+			//	System.Console.WriteLine("idlewaiting: {0} ({1}) ",self.Info.Name, self.ActorID);
+			if (active || waiting)
+				return;
+			
+			waiting = true;
+			sequence = Info.Animations.Random(self.World.SharedRandom);
+			delay = Info.IdleWaitTicks;
+			//System.Console.WriteLine("TickIdle: {2} ({3}) set {0} {1}",sequence,delay, self.Info.Name, self.ActorID);
+
 		}
 	}
 }

OpenRA.Mods.RA/OpenRA.Mods.RA.csproj

@@ -299,7 +299,6 @@
     <Compile Include="HackyAI.cs" />
     <Compile Include="RALoadScreen.cs" />
     <Compile Include="NullLoadScreen.cs" />
-    <Compile Include="Activities\IdleAnimation.cs" />
     <Compile Include="IdleAnimation.cs" />
     <Compile Include="World\GotoNextBase.cs" />
     <Compile Include="World\SmudgeLayer.cs" />

OpenRA.Mods.RA/Render/RenderInfantry.cs

@@ -67,15 +67,17 @@ namespace OpenRA.Mods.RA.Render
 		{
 			base.Tick(self);
 			if (inAttack) return;
-			if (self.GetCurrentActivity() is Activities.IdleAnimation) return;
+			if (self.IsIdle) return;
 			if (ChooseMoveAnim(self)) return;
 
-			if (IsProne(self))
+			// TODO: Pick new animation only on damage or idle notifications
-				anim.PlayFetchIndex("crawl", () => 0);			/* what a hack. */
+			//if (IsProne(self))
-			else
+			//	anim.PlayFetchIndex("crawl", () => 0);			/* what a hack. */
-				anim.Play("stand");
+			//else
+			//	anim.Play("stand");
 		}
 		
+
 		public void Damaged(Actor self, AttackInfo e)
 		{
 			if (e.DamageState == DamageState.Dead)