Merge pull request #108 from facebookresearch/pacificist

Pacificism

light/graph/elements/graph_nodes.py

@@ -537,6 +537,7 @@ def __init__(self, node_id, name, props=None, db_id=None):
             self.dead = self._props.get("dead")
         self.is_player = self._props.get("is_player", False)
         self.usually_npc = self._props.get("usually_npc", False)
+        self.pacifist = self._props.get("pacifist", False)
 
         self.following = None
         self.followed_by = {}

light/graph/events/graph_events.py

@@ -1081,6 +1081,15 @@ def __init__(
         self.attack = None
         self.defense = None
 
+    def is_not_pacifist(self, world):
+        if not self.actor.pacifist:
+            return True
+        self.pacifist = True
+        self.__self_view = "You couldn't do that, you are a pacifist!"
+        world.broadcast_to_agents(self, [self.actor])
+        self.executed = True
+        return False
+
     def execute(self, world: "World") -> List[GraphEvent]:
         """
         On execution, have one agent hit another, calculating
@@ -1089,6 +1098,12 @@ def execute(self, world: "World") -> List[GraphEvent]:
         If an agent died, trigger a death event.
         """
         assert not self.executed
+
+        self.pacifist = False
+        self.__successful_hit = self.is_not_pacifist(world)
+        if not self.__successful_hit:
+            return []
+
         # Populate for views
         self.__actor_name = self.actor.get_prefix_view()
         attack_target = self.target_nodes[0]
@@ -1144,6 +1159,11 @@ def execute(self, world: "World") -> List[GraphEvent]:
     def view_as(self, viewer: GraphAgent) -> Optional[str]:
         """Provide the way that the given viewer should view this event"""
 
+        if self.pacifist:
+            if viewer == self.actor:
+                return self.__self_view
+            return ""
+
         if self.attack == 0:
             # The attack missed
             if viewer == self.actor:

light/graph/structured_graph.py

@@ -592,17 +592,12 @@ def from_worldbuilder_json(input_json: str):
 
         agents = {}
         for ind, props in entities["character"].items():
-            n = g.add_agent(
-                props["name"], props,
-                uid=str(ind),
-            )
+            n = g.add_agent(props["name"], props, uid=str(ind),)
             agents[int(ind)] = n
 
         objects = {}
         for ind, obj in entities["object"].items():
-            n = g.add_object(
-                obj["name"], obj, uid=str(ind)
-            )
+            n = g.add_object(obj["name"], obj, uid=str(ind))
             objects[int(ind)] = n
 
         grid = {}

scripts/examples/simple_world.json

@@ -52,6 +52,7 @@
         "kitty_3_5": {
             "agent": true,
             "aggression": 0,
+	    "pacifist": true,
             "char_type": "creature",
             "classes": [
                 "agent"