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DungeonMaster AI - Adventure Loader
Loads and manages adventure JSON files for pre-made scenarios.
"""
from __future__ import annotations
import json
import logging
from pathlib import Path
from typing import TYPE_CHECKING
from .models import (
AdventureData,
EncounterData,
NPCInfo,
SceneInfo,
)
if TYPE_CHECKING:
from .game_state_manager import GameStateManager
logger = logging.getLogger(__name__)
# Default adventures directory relative to project root
DEFAULT_ADVENTURES_DIR = Path(__file__).parent.parent.parent / "adventures"
class AdventureLoader:
"""
Loads and manages adventure JSON files.
Adventures are pre-made scenarios with scenes, NPCs, encounters,
and victory conditions. This class handles loading, parsing,
and initializing games from adventure files.
"""
def __init__(
self,
adventures_dir: Path | str | None = None,
) -> None:
"""
Initialize the adventure loader.
Args:
adventures_dir: Directory containing adventure JSON files.
Defaults to 'adventures/' in project root.
"""
if adventures_dir is None:
self._adventures_dir = DEFAULT_ADVENTURES_DIR
else:
self._adventures_dir = Path(adventures_dir)
# Cache loaded adventures
self._cache: dict[str, AdventureData] = {}
logger.debug(f"AdventureLoader initialized with dir: {self._adventures_dir}")
@property
def adventures_dir(self) -> Path:
"""Get the adventures directory path."""
return self._adventures_dir
# =========================================================================
# Adventure Discovery
# =========================================================================
def list_adventures(self) -> list[dict[str, str]]:
"""
List all available adventures.
Returns:
List of adventure info dicts with keys:
- name: Adventure name
- file: Filename
- description: Adventure description
- difficulty: Difficulty level
- estimated_time: Estimated play time
"""
adventures: list[dict[str, str]] = []
if not self._adventures_dir.exists():
logger.warning(f"Adventures directory not found: {self._adventures_dir}")
return adventures
for json_file in self._adventures_dir.glob("*.json"):
# Skip sample_characters directory
if json_file.is_dir():
continue
try:
with open(json_file, encoding="utf-8") as f:
data = json.load(f)
metadata = data.get("metadata", {})
adventures.append(
{
"name": metadata.get("name", json_file.stem),
"file": json_file.name,
"description": metadata.get("description", ""),
"difficulty": metadata.get("difficulty", "medium"),
"estimated_time": metadata.get("estimated_time", "Unknown"),
"recommended_level": str(
metadata.get("recommended_level", 1)
),
}
)
except (json.JSONDecodeError, OSError) as e:
logger.warning(f"Failed to load adventure {json_file}: {e}")
continue
return adventures
# =========================================================================
# Adventure Loading
# =========================================================================
def load(self, adventure_name: str) -> AdventureData | None:
"""
Load an adventure by name.
Checks cache first, then loads from file.
Args:
adventure_name: Name of adventure or filename (with/without .json)
Returns:
AdventureData if found, None otherwise
"""
# Check cache
if adventure_name in self._cache:
return self._cache[adventure_name]
# Find the file
json_file = self._find_adventure_file(adventure_name)
if json_file is None:
logger.warning(f"Adventure not found: {adventure_name}")
return None
# Load and parse
try:
with open(json_file, encoding="utf-8") as f:
data = json.load(f)
adventure = AdventureData.from_json(data)
# Cache by both name and filename
self._cache[adventure_name] = adventure
self._cache[adventure.metadata.name] = adventure
self._cache[json_file.stem] = adventure
logger.info(f"Loaded adventure: {adventure.metadata.name}")
return adventure
except (json.JSONDecodeError, OSError) as e:
logger.error(f"Failed to load adventure {json_file}: {e}")
return None
except Exception as e:
logger.error(f"Failed to parse adventure {json_file}: {e}")
return None
def _find_adventure_file(self, adventure_name: str) -> Path | None:
"""
Find an adventure file by name.
Args:
adventure_name: Name or filename to search for
Returns:
Path to file if found, None otherwise
"""
if not self._adventures_dir.exists():
return None
# Try exact filename
exact_path = self._adventures_dir / adventure_name
if exact_path.exists():
return exact_path
# Try with .json extension
json_path = self._adventures_dir / f"{adventure_name}.json"
if json_path.exists():
return json_path
# Try matching by metadata name
for json_file in self._adventures_dir.glob("*.json"):
try:
with open(json_file, encoding="utf-8") as f:
data = json.load(f)
metadata = data.get("metadata", {})
if metadata.get("name", "").lower() == adventure_name.lower():
return json_file
except (json.JSONDecodeError, OSError):
continue
return None
# =========================================================================
# Game Initialization
# =========================================================================
async def initialize_game(
self,
manager: GameStateManager,
adventure_name: str,
) -> bool:
"""
Initialize a game session with an adventure.
Args:
manager: GameStateManager to initialize
adventure_name: Name of adventure to load
Returns:
True if successful, False otherwise
"""
adventure = self.load(adventure_name)
if adventure is None:
return False
try:
# Start new game with adventure name
await manager.new_game(adventure=adventure.metadata.name)
# Set starting location
starting_scene = adventure.starting_scene
scene_id = str(starting_scene.get("scene_id", ""))
scene_info = self.get_scene(adventure_name, scene_id)
if scene_info:
manager.set_location(scene_info.name, scene_info)
else:
# Fallback to basic location from starting scene
manager.set_location(
str(starting_scene.get("scene_id", "Unknown")),
None,
)
# Add all NPCs to manager
for npc_data in adventure.npcs:
if isinstance(npc_data, dict):
npc = self._parse_npc(npc_data)
if npc:
manager.add_known_npc(npc)
# Set initial story flags
manager.set_story_flag("adventure_started", True)
manager.set_story_flag("adventure_name", adventure.metadata.name)
logger.info(
f"Initialized game with adventure: {adventure.metadata.name}"
)
return True
except Exception as e:
logger.error(f"Failed to initialize game with adventure: {e}")
return False
# =========================================================================
# Content Retrieval
# =========================================================================
def get_starting_narrative(self, adventure_name: str) -> str:
"""
Get the opening narrative for an adventure.
Args:
adventure_name: Name of adventure
Returns:
Opening narrative text, or empty string if not found
"""
adventure = self.load(adventure_name)
if adventure is None:
return ""
starting_scene = adventure.starting_scene
return str(starting_scene.get("narrative", ""))
def get_scene(
self,
adventure_name: str,
scene_id: str,
) -> SceneInfo | None:
"""
Get a scene from an adventure.
Args:
adventure_name: Name of adventure
scene_id: Scene ID to find
Returns:
SceneInfo if found, None otherwise
"""
adventure = self.load(adventure_name)
if adventure is None:
return None
scene_data = adventure.get_scene(scene_id)
if scene_data is None:
return None
return self._parse_scene(scene_data)
def get_encounter(
self,
adventure_name: str,
encounter_id: str,
) -> EncounterData | None:
"""
Get an encounter from an adventure.
Args:
adventure_name: Name of adventure
encounter_id: Encounter ID to find
Returns:
EncounterData if found, None otherwise
"""
adventure = self.load(adventure_name)
if adventure is None:
return None
return adventure.get_encounter(encounter_id)
def get_npc(
self,
adventure_name: str,
npc_id: str,
) -> NPCInfo | None:
"""
Get an NPC from an adventure.
Args:
adventure_name: Name of adventure
npc_id: NPC ID to find
Returns:
NPCInfo if found, None otherwise
"""
adventure = self.load(adventure_name)
if adventure is None:
return None
npc_data = adventure.get_npc(npc_id)
if npc_data is None:
return None
return self._parse_npc(npc_data)
def get_all_scenes(self, adventure_name: str) -> list[SceneInfo]:
"""
Get all scenes from an adventure.
Args:
adventure_name: Name of adventure
Returns:
List of all SceneInfo objects
"""
adventure = self.load(adventure_name)
if adventure is None:
return []
scenes: list[SceneInfo] = []
for scene_data in adventure.scenes:
if isinstance(scene_data, dict):
scene = self._parse_scene(scene_data)
if scene:
scenes.append(scene)
return scenes
def get_all_npcs(self, adventure_name: str) -> list[NPCInfo]:
"""
Get all NPCs from an adventure.
Args:
adventure_name: Name of adventure
Returns:
List of all NPCInfo objects
"""
adventure = self.load(adventure_name)
if adventure is None:
return []
npcs: list[NPCInfo] = []
for npc_data in adventure.npcs:
if isinstance(npc_data, dict):
npc = self._parse_npc(npc_data)
if npc:
npcs.append(npc)
return npcs
# =========================================================================
# Parsing Helpers
# =========================================================================
def _parse_scene(self, data: dict[str, object]) -> SceneInfo | None:
"""
Parse a scene dict into SceneInfo.
Args:
data: Raw scene data
Returns:
SceneInfo if valid, None otherwise
"""
try:
scene_id = str(data.get("scene_id", ""))
if not scene_id:
return None
# Extract sensory details
details = data.get("details", {})
sensory: dict[str, str] = {}
if isinstance(details, dict):
sensory_raw = details.get("sensory", {})
if isinstance(sensory_raw, dict):
for key, value in sensory_raw.items():
sensory[str(key)] = str(value)
# Extract searchable objects
searchable: list[dict[str, object]] = []
if isinstance(details, dict):
searchable_raw = details.get("searchable", [])
if isinstance(searchable_raw, list):
searchable = [
dict(obj) for obj in searchable_raw if isinstance(obj, dict)
]
# Extract encounter ID
encounter = data.get("encounter")
encounter_id: str | None = None
if isinstance(encounter, dict):
encounter_id = str(encounter.get("encounter_id", ""))
elif isinstance(encounter, str):
encounter_id = encounter
return SceneInfo(
scene_id=scene_id,
name=str(data.get("name", scene_id)),
description=str(data.get("description", "")),
sensory_details=sensory,
exits=dict(data.get("exits", {})),
npcs_present=list(data.get("npcs_present", [])),
items=list(data.get("items", [])),
encounter_id=encounter_id if encounter_id else None,
searchable_objects=searchable,
)
except Exception as e:
logger.warning(f"Failed to parse scene: {e}")
return None
def _parse_npc(self, data: dict[str, object]) -> NPCInfo | None:
"""
Parse an NPC dict into NPCInfo.
Args:
data: Raw NPC data
Returns:
NPCInfo if valid, None otherwise
"""
try:
npc_id = str(data.get("npc_id", ""))
if not npc_id:
return None
return NPCInfo(
npc_id=npc_id,
name=str(data.get("name", "Unknown")),
description=str(data.get("description", "")),
personality=str(data.get("personality", "")),
voice_profile=str(data.get("voice_profile", "dm")),
dialogue_hooks=list(data.get("dialogue_hooks", [])),
monster_stat_block=data.get("monster_stat_block"),
relationship="hostile"
if data.get("monster_stat_block")
else "neutral",
)
except Exception as e:
logger.warning(f"Failed to parse NPC: {e}")
return None
# =========================================================================
# Cache Management
# =========================================================================
def clear_cache(self) -> None:
"""Clear the adventure cache."""
self._cache.clear()
logger.debug("Adventure cache cleared")
def is_cached(self, adventure_name: str) -> bool:
"""
Check if an adventure is cached.
Args:
adventure_name: Name of adventure
Returns:
True if cached, False otherwise
"""
return adventure_name in self._cache
def preload(self, adventure_names: list[str]) -> int:
"""
Preload multiple adventures into cache.
Args:
adventure_names: List of adventure names to load
Returns:
Number of successfully loaded adventures
"""
loaded = 0
for name in adventure_names:
if self.load(name) is not None:
loaded += 1
return loaded
def __len__(self) -> int:
"""Return number of cached adventures."""
return len(self._cache)
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