Added a Gamemode for selling interfaces, as well as the base of the player/merchant interaction, related to issue #18

squirrelbattle/entities/friendly.py

@@ -22,7 +22,7 @@ class Merchant(FriendlyEntity) :
         self.inventory = inventory
         self.hazel = hazel
 
-    def talk_to(self, player : Player) -> None:
+    def talk_to(self, player : Player) -> str:
         """
         This function is used to open the merchant's inventory in a menu,
         and allow the player to buy/sell objects

squirrelbattle/entities/player.py

@@ -117,6 +117,12 @@ class Player(FightingEntity):
                 queue.append((new_y, new_x))
         self.paths = predecessors
 
+    def add_to_inventory(self, obj : Item) -> None :
+        """
+        Adds an object to inventory
+        """
+        self.inventory.append(obj)
+    
     def save_state(self) -> dict:
         """
         Saves the state of the entity into a dictionary

squirrelbattle/enums.py

@@ -26,6 +26,7 @@ class GameMode(Enum):
     PLAY = auto()
     SETTINGS = auto()
     INVENTORY = auto()
+    STORE = auto()
 
 
 class KeyValues(Enum):

squirrelbattle/game.py

@@ -130,7 +130,8 @@ class Game:
                     if entity.is_friendly() and entity.x == xp and entity.y == yp :
                         msg = entity.talk_to(self.player)
                         self.logs.add_message(msg)
-                        
+                        if entity.is_merchant() :
+                            self.state = GameMode.STORE
                 
 
     def handle_key_pressed_main_menu(self, key: KeyValues) -> None:

squirrelbattle/interfaces.py

@@ -329,6 +329,12 @@ class Entity:
         """
         return isinstance(self, FriendlyEntity)
 
+    def is_merchant(self) -> bool:
+        """
+        Is this entity a merchant?
+        """
+        return isinstance(self, Merchant)
+
     @property
     def translated_name(self) -> str:
         return _(self.name.replace("_", " "))