add quest item functionality (closes #31)

Author: creaturekatze

src/fantasy_forge/item.py

@@ -8,13 +8,19 @@
 class Item(Entity):
     """An Item is an entity which can be picked up by the player."""
 
-
-    __attributes__ = {**Entity.__attributes__, "moveable": bool, "carryable": bool, "weight": int}
-    __important_attributes__ = ("name", "moveable", "carryable", "weight")
+    __attributes__ = {
+        **Entity.__attributes__,
+        "moveable": bool,
+        "carryable": bool,
+        "weight": int,
+        "quest_item": bool,
+    }
+    __important_attributes__ = ("name", "moveable", "carryable", "weight", "quest_item")
 
     moveable: bool
     carryable: bool
     weight: int
+    quest_item: bool
 
     def __init__(self: Self, messages: Messages, config_dict: dict[str, Any]) -> None:
         """
@@ -31,10 +37,14 @@ def __init__(self: Self, messages: Messages, config_dict: dict[str, Any]) -> Non
         self.moveable = config_dict.pop("moveable", True)
         self.carryable = config_dict.pop("carryable", True)
         self.weight = config_dict.pop("weight", 1)
+        self.quest_item = config_dict.pop("quest_item", False)
         super().__init__(messages, config_dict)
 
+        if self.quest_item:
+            self.weight = 0
+
     def __repr__(self: Self) -> str:
-        return f"Item({self.name}, {self.description}, moveable={self.moveable}, carryable={self.carryable}, weight={self.weight})"
+        return f"Item({self.name}, {self.description}, moveable={self.moveable}, carryable={self.carryable}, weight={self.weight}, quest_item={self.quest_item})"
 
     def on_pickup(self: Self):
         # TODO
@@ -45,6 +55,7 @@ def to_dict(self: Self) -> dict:
         item_dict["moveable"] = self.moveable
         item_dict["carryable"] = self.carryable
         item_dict["weight"] = self.weight
+        item_dict["quest_item"] = self.quest_item
         return item_dict
 
     @staticmethod

src/fantasy_forge/l10n/en/main.ftl

@@ -49,6 +49,7 @@ armour-detail = {$type}: {EXISTS($item) ->
 }.
 drop-not-found = You can't drop { $item }.
 dropped = You dropped { INTER($item) }.
+cant-drop-quest-item = You can't drop { INTER($item) }, it's a quest item.
 enter-area-message = You are now in { $area }. You see:
 inventory-look-message = In the inventory you find { $items }.
 inventory-look-empty-message = Your inventory is empty.

src/fantasy_forge/player.py

@@ -395,6 +395,14 @@ def drop(self, item_name: str):
                 item=item_name,
             )
             return
+        if item.quest_item:
+            self.inventory.add(item)
+            self.messages.to(
+                [self],
+                "cant-drop-quest-item",
+                item=item_name,
+            )
+            return
         self.area.contents[item.name] = item  # adds item to current area
         if self.main_hand is item:  # clears main hand if item was dropped from it
             self.main_hand = None