Fix crates not showing their water animation

when they are not paradropped.

OpenRA.Mods.Common/Traits/Render/WithCrateBody.cs

@@ -37,7 +37,7 @@ namespace OpenRA.Mods.Common.Traits
 		}
 	}
 
-	class WithCrateBody : INotifyParachuteLanded
+	class WithCrateBody : INotifyParachuteLanded, INotifyAddedToWorld
 	{
 		readonly Actor self;
 		readonly Animation anim;
@@ -57,7 +57,21 @@ namespace OpenRA.Mods.Common.Traits
 			rs.Add(anim);
 		}
 
+		void INotifyAddedToWorld.AddedToWorld(Actor self)
+		{
+			// Don't change animations while still in air
+			if (!self.IsAtGroundLevel())
+				return;
+
+			PlaySequence();
+		}
+
 		public void OnLanded()
+		{
+			PlaySequence();
+		}
+
+		void PlaySequence()
 		{
 			var sequence = self.World.Map.GetTerrainInfo(self.Location).IsWater ? info.WaterSequence : info.LandSequence;
 			if (!string.IsNullOrEmpty(sequence))