Add LandingTick to ProductionAirdrop

OpenRA.Mods.Common/Traits/Buildings/ProductionAirdrop.cs

@@ -39,6 +39,12 @@ public class ProductionAirdropInfo : ProductionInfo
 		[Desc("Direction the aircraft should face to land.")]
 		public readonly WAngle Facing = new(256);
 
+		[Desc("Tick that aircraft should wait before producing.")]
+		public readonly int WaitTickBeforeProduce = 0;
+
+		[Desc("Tick that aircraft should wait after producing.")]
+		public readonly int WaitTickAfterProduce = 0;
+
 		public override object Create(ActorInitializer init) { return new ProductionAirdrop(init, this); }
 	}
 
@@ -104,6 +110,8 @@ public override bool Produce(Actor self, ActorInfo producee, string productionTy
 
 				var exitCell = self.Location + exit.ExitCell;
 				actor.QueueActivity(new Land(actor, Target.FromActor(self), WDist.Zero, WVec.Zero, info.Facing, clearCells: new CPos[1] { exitCell }));
+				if (info.WaitTickBeforeProduce > 0)
+					actor.QueueActivity(new Wait(info.WaitTickBeforeProduce));
 				actor.QueueActivity(new CallFunc(() =>
 				{
 					if (!self.IsInWorld || self.IsDead)
@@ -119,7 +127,8 @@ public override bool Produce(Actor self, ActorInfo producee, string productionTy
 					Game.Sound.PlayNotification(self.World.Map.Rules, self.Owner, "Speech", info.ReadyAudio, self.Owner.Faction.InternalName);
 					TextNotificationsManager.AddTransientLine(self.Owner, info.ReadyTextNotification);
 				}));
-
+				if (info.WaitTickAfterProduce > 0)
+					actor.QueueActivity(new Wait(info.WaitTickAfterProduce));
 				actor.QueueActivity(new FlyOffMap(actor, Target.FromCell(w, endPos)));
 				actor.QueueActivity(new RemoveSelf());
 			});