76 lines
2.3 KiB
Python
76 lines
2.3 KiB
Python
from __future__ import annotations
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import json
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from .llm import call_llm
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from .paths import CHAR_PATH, WORLD_PATH
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from . import state
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VALIDATION_PROMPT = """You are a strict RPG game master validating whether a player's action is possible given the game state. Be thorough — check inventory, stats, location, NPCs, and story logic.
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Respond with JSON only:
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{{"valid": true, "reason": "ok"}}
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or
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{{"valid": false, "reason": "brief explanation of why the action is impossible"}}
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## Character
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{character}
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## World
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{world}
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## Player Action
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{action}
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## Instructions
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- Is the player trying to use an item they don't have? -> invalid
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- Are they asserting something that contradicts the state? -> invalid
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- Is the action nonsensical given the situation? -> invalid
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- Does the action make sense given the character's abilities and resources? -> valid
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- If valid, also check: if they're using a consumable item, note that it must be removed from inventory.
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Reply with ONLY the JSON object."""
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def validate_action(
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player_action: str,
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on_debug: callable = None,
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) -> tuple[bool, str]:
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"""Ask the LLM whether a player action is valid given the game state. Returns (valid, reason)."""
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if not player_action:
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return True, ""
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char = state.read_file(CHAR_PATH) or "*No character sheet.*"
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world = state.truncate_world(state.read_file(WORLD_PATH) or "") or "*No world state.*"
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prompt = VALIDATION_PROMPT.format(character=char, world=world, action=player_action)
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text = call_llm(
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[{"role": "user", "content": prompt}],
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max_tokens=256,
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temperature=0.2,
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label="Action validation",
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on_debug=on_debug,
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)
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if not text:
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return True, ""
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try:
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data = json.loads(text.strip())
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valid = data.get("valid", True)
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reason = data.get("reason", "")
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if on_debug:
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on_debug("action_validation", {"valid": valid, "reason": reason, "action": player_action})
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return valid, reason
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except (json.JSONDecodeError, ValueError):
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if on_debug:
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on_debug("action_validation", {"valid": True, "reason": "parse_failed", "raw": text[:200]})
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return True, ""
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def auto_prompt(book_log: str = "") -> str:
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"""Fallback player prompt."""
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return "**What do you do?**"
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