refactor(examples): tidy drag_and_drop_inventory.rpy

game/examples/drag_and_drop_inventory.rpy

@@ -1,28 +1,26 @@
 # https://discover-with-mia.itch.io/renpy-tutorial-drag-and-drop-inventory
 init python:
 
-    # update the expression of a given character based on preference for a particular item.
-    def character_expression(character, item) -> None:
+    def get_character_expression(character, item) -> str:
         global characters
         if item == characters[character]["preferences"]:
-            characters[character]["expression"] = "happy"
+            return "happy"
         else:
-            characters[character]["expression"] = "normal"
+            return "normal"
 
-    # check if there are items in the inventory currently available for use.
     def items_are_available() -> bool:
         return any(item["available"] for item in inventory.values())
 
-    # select the first available item from the inventory as a default choice.
     def select_default_item() -> tuple[any, any]:
         for item_id, item_info in inventory.items():
             if item_info["available"]:
                 return item_id, item_info
         return None, None
 
-    # handle the drag and drop interaction. Update global state when an item is dropped onto a character.
+    # handle the drag and drop interaction
+    # update global state when an item is dropped onto a character
     def character_dragged(drags, drop) -> bool:
-        global currentCharacter, lastGivenItem
+        global current_character, last_given_item
 
         if not drop:
             return False
@@ -31,10 +29,7 @@ init python:
         character = drop.drag_name
 
         if character in characters and item in inventory and inventory[item]["available"]:
-            lastGivenItem = item
-
-            character_expression(character, item)
-
+            last_given_item = item
             inventory[item]["available"] = False
             return True
 
@@ -64,18 +59,16 @@ default characters = {
         "normal": "sylvie/sylvie blue normal.png",
         "happy": "sylvie/sylvie blue smile.png",
         "preferences": "gem",
-        "expression": "normal",
     },
     "Eileen": {
         "normal": "eileen/eileen happy.png",
         "happy": "eileen/eileen vhappy.png",
         "preferences": "book",
-        "expression": "normal",
     },
 }
 
-default currentCharacter = "Sylvie"
-default lastGivenItem = None
+default current_character = "Sylvie"
+default last_given_item = None
 
 default selected_info = ""
 default selected_item = ""
@@ -109,7 +102,12 @@ screen interact_with_characters():
                 vbox:
                     for item_id, item_info in inventory.items():
                         if item_info["available"]:
-                            textbutton f"{item_info['name']} - {item_info['description']}" action [SetVariable('selected_item', item_id), SetVariable('selected_info', item_info)]
+                            textbutton f"{item_info['name']} - {item_info['description']}":
+                                action [
+                                    SetVariable('selected_item', item_id),
+                                    SetVariable('selected_info', item_info),
+                                ]
+
                         else:
                             text "??? - ???"
 
@@ -124,37 +122,29 @@ screen interact_with_characters():
                     image selected_info["image"]
 
                 drag:
-                    drag_name currentCharacter
+                    drag_name current_character
                     draggable False
                     xalign 0.5
                     yalign 1.0
-                    image characters[currentCharacter][characters[currentCharacter]["expression"]]
+                    image characters[current_character]["normal"]
 
 label drag_and_drop_inventory:
 
     $ selected_item, selected_info = select_default_item()
-    $ item_given = False
 
     call screen interact_with_characters
 
-    if lastGivenItem:
-        $ character_expression(currentCharacter, lastGivenItem)
-        $ expression = characters[currentCharacter]["expression"]
+    if last_given_item:
+        $ character_expression = get_character_expression(current_character, last_given_item)
+        $ character_image = characters[current_character][character_expression]
 
-        $ character_image = characters[currentCharacter][expression]
+        if character_expression == "happy":
+            show expression character_image
+            "[current_character] is happy with her favorite gift."
 
-        if expression == "happy":
-            show expression character_image at center
-            "[currentCharacter] is happy with her favorite gift."
         else:
-            show expression character_image at center
-            "[currentCharacter]: 'Thank you, but this isn't what I prefer.'"
-
-        $ item_given = True
-
-    jump suite_story
-
-label suite_story:
+            show expression character_image
+            "[current_character]: 'Thank you, but this isn't what I prefer.'"
 
     while items_are_available():
         jump drag_and_drop_inventory