fall back to default door if active door runs into dead end

Gencaster · Sep 18, 2023 · 4c558c0 · 4c558c0
1 parent cd4a02f
commit 4c558c0
Showing 1 changed file with 16 additions and 7 deletions.
diff --git a/caster-back/story_graph/engine.py b/caster-back/story_graph/engine.py
@@ -388,13 +388,22 @@ async def get_next_node(self) -> Node:
             ).afirst()
         # else return default out
 
-        if exit_door is None:
-            raise GraphDeadEnd()
-
-        try:
-            return (await exit_door.out_edges.order_by("?").select_related("in_node_door__node").afirst()).in_node_door.node  # type: ignore
-        except AttributeError:
-            raise GraphDeadEnd()
+        while True:
+            if exit_door is None:
+                raise GraphDeadEnd()
+            try:
+                return (await exit_door.out_edges.order_by("?").select_related("in_node_door__node").afirst()).in_node_door.node  # type: ignore
+            except AttributeError:
+                if exit_door.is_default:
+                    raise GraphDeadEnd()
+            log.info(
+                f"Ran into a dead end on non-default door {exit_door.name} on node {self._current_node.name} - fallback to default door"
+            )
+            exit_door = await NodeDoor.objects.filter(
+                node=self._current_node,
+                door_type=NodeDoor.DoorType.OUTPUT,
+                is_default=True,
+            ).afirst()
 
     async def start(
         self, max_steps: int = 1000