NAT playground run systems when changes are made

projects/nat-flixel-desktop-playground/source/EntrySpriteSystem.kiss

@@ -10,7 +10,7 @@
         ->[archive e]
             ?(and (tagsMatch archive e tagFilterString) (hasComponent e Images))
         ->[archive e]
-            {
+            (unless (sprites.exists e.id)
                 (when !(hasComponent e Positions)
                     (addComponent archive e Positions (new Map)))
                 (withWritableComponents archive e [positions Positions]
@@ -18,8 +18,7 @@
                         (dictSet positions positionKey (object x 0.0 y 0.0 z 0.0))))
                 (let [sprite (new EntrySprite positionKey archive e controller)]
                     (playState.entryGroup.add sprite)
-                    (dictSet sprites e.id sprite))
-            })
+                    (dictSet sprites e.id sprite))))
     
     (set onRemoveEntry
         ->[archive e]