fix C++ type error for playground

projects/nat-archive-tool/src/nat/Archive.kiss

@@ -29,8 +29,10 @@
         (refreshEntry e)
         e))
 
-// After modifying an entry, this must be called. If you are writing in a createEntry initializer or a system's processEntry function, this will happen automatically.
+// After modifying an entry, this must be called. If you are writing in a createEntry
-// Otherwise, you can guarantee it happens automatically by using the (withWritableEntry) macro in Lib.kiss
+// initializer or a system's processEntry function, this will happen automatically.
+// Otherwise, you can guarantee it happens automatically by using the (withWritableEntry)
+// and (withWritableComponents) macros in Lib.kiss
 (method refreshEntry [:Entry e]
     (_saveEntry e)
     (doFor system systems

projects/nat-archive-tool/src/nat/System.kiss

@@ -9,9 +9,13 @@
             &prop :EntryProcessor processEntry]
     [])
 
+(prop &mut :Null<EntryProcessor> onRemoveEntry)
+
 (method :Void checkEntryInOrOut [:Archive archive :Entry e]
     (if (canProcessEntry archive e)
             (dictSet entries e.id e)
-        (entries.remove e.id)))
+        (when (entries.exists e.id)
+            (entries.remove e.id)
+            (when onRemoveEntry (onRemoveEntry archive e)))))
 
 // TODO systems may need access to a UI

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

@@ -1,9 +1,11 @@
 (loadFrom "nat-archive-tool" "src/nat/Lib.kiss")
 
+(prop :Map<String,EntrySprite> sprites (new Map))
+
 (defNew [:String tagFilterString :String positionKey :PlayState playState]
     (super
         ->[archive e]
-            (and (tagsMatch archive e tagFilterString) (hasComponent e Images))
+            ?(and (tagsMatch archive e tagFilterString) (hasComponent e Images))
         ->[archive e]
             {
                 (when !(hasComponent e Positions)
@@ -12,5 +14,14 @@
                 (withWritableComponents archive e [positions Positions]
                     (when !(positions.exists positionKey)
                         (dictSet positions positionKey (object x 0.0 y 0.0 z 0.0))))
-                (playState.entryGroup.add (new EntrySprite positionKey archive e))
+                (let [sprite (new EntrySprite positionKey archive e)]
+                    (playState.entryGroup.add sprite)
+                    (dictSet sprites e.id sprite))
+            })
+    
+    (set onRemoveEntry
+        ->[archive e]
+            {
+                (.kill (dictGet sprites e.id))
+                (sprites.remove e.id)
             }))

projects/nat-flixel-playground/source/PlayState.kiss

@@ -38,11 +38,10 @@
 
     // TODO allow configuring the tags at runtime and erasing/re-creating sprites later
     // TODO allow using other position keys and erasing/re-creating sprites later
-    (let [entrySpriteSystem (new EntrySpriteSystem "!done" "Playground-MAIN" this)]
+    (prop &mut :EntrySpriteSystem spriteSystem)
-        (archive.addSystem entrySpriteSystem)
+    (set spriteSystem (new EntrySpriteSystem "!done" "Playground-MAIN" this))
-        (entrySpriteSystem.process archive))
+    (archive.addSystem spriteSystem)
-    
+    (spriteSystem.process archive))
-    )
 
 (method &override :Void update [:Float elapsed]
     (super.update elapsed)
@@ -153,9 +152,13 @@
 
         
 (method handleChanges [:Archive archive :ChangeSet changeSet]
-    // TODO refresh the sprites/other UI elements for entries that changed data
     (doFor e changeSet
-        (print (archive.fullString e))))
+        // refresh the sprites for entries that changed data.
+        // Entries whose data changed to remove them from the sprite pool will already have been removed
+        // by refreshEntry()
+        (when (spriteSystem.entries.exists e.id)
+            (spriteSystem.onRemoveEntry e)
+            (spriteSystem.processEntry e))))
 
 (prop &mut :Int uiY 0)