mindcraft/utils/history.js

import { writeFileSync, readFileSync, mkdirSync } from 'fs';
import { sendRequest } from './gpt.js';


let history_examples = [
    {'role': 'user', 'content': 'miner_32: Hey! What are you up to?'},
    {'role': 'assistant', 'content': 'Nothing much miner_32, what do you need?'},

    {'role': 'user', 'content': 'grombo_Xx: What do you see?'},
    {'role': 'assistant', 'content': 'Let me see... !blocks'},
    {'role': 'system', 'content': 'NEARBY_BLOCKS\n- oak_log\n- dirt\n- cobblestone'},
    {'role': 'assistant', 'content': 'I see some oak logs, dirt, and cobblestone.'},

    {'role': 'user', 'content': 'zZZn98: come here'},
    {'role': 'assistant', 'content': '```// I am going to navigate to zZZn98.\nawait skills.goToPlayer(bot, "zZZn98");```'},
    {'role': 'system', 'content': 'Code execution finished successfully.'},
    {'role': 'assistant', 'content': 'Here!'},

    {'role': 'user', 'content': 'hanky: collect some sand for me please'},
    {'role': 'assistant', 'content': 'Collecting sand...```// I am going to collect 3 sand and give to hanky.\n\
    await skills.collectBlock(bot, "sand");\nawait skills.giveToPlayer(bot, "sand", "hanky");```'},
    {'role': 'system', 'content': 'Code Output:\nYou have reached player hanky.\nCode execution finished successfully.'},
    {'role': 'assistant', 'content': 'Here!'},

    {'role': 'user', 'content': 'sarah_O.o: can you fly up in the air?'},
    {'role': 'assistant', 'content': "I can't do that."},

    {'role': 'user', 'content': 'hanky: kill that zombie!'},
    {'role': 'assistant', 'content': "I'm attacking! ```//I'm going to attack the nearest zombie.\n\
    await skills.attackMob(bot, 'zombie');```"},
    {'role': 'system', 'content': 'Code Output:\nNo zombie nearby\nCode execution failed!'},
    {'role': 'assistant', 'content': 'I could not find a zombie nearby.'},

    {'role': 'user', 'content': 'billybob: stop'},
    {'role': 'assistant', 'content': '```// I am going to write empty code to stop whatever I am doing\n```'},

    
]

export class History {
    constructor(agent) {
        this.name = agent.name;
        this.turns = history_examples;

        // These define an agent's long term memory
        this.bio = 'Your personality is friendly. Your goal is to help.';
        this.memory = '';
        this.knowledge = '';
        this.num_saved_turns = 0;

        // Variables for controlling how often we summarize the agent's memory and knowledge
        this.max_messages = 20;
        this.save_size = 10;
        this.save_step = 7;
    }

    getHistory() {
        return this.turns;
    }

    async storeMemories(turns) {
        const memory_message = 'You are a minecraft bot. ' + this.bio + '\n\nCurrent Memory:\n' + this.memory;
        let memory_prompt = 'Update your memory with the following conversation. Include only conversational details about other players that you may need to remember for later. Your output should be a short paragraph summarizing what you have experienced.\n';
        for (let turn of turns) {
            if (turn.role === 'user') {
                memory_prompt += `\n${turn.content}`;
            } else {
                memory_prompt += `\nYou: ${turn.content}`;
            }
        }
        let memory_turns = [{'role': 'user', 'content': memory_prompt}]
        this.memory = await sendRequest(memory_turns, memory_message);

        const knowledge_message = 'You are a minecraft bot. ' + this.bio + '\n\nCurrent Knowledge: ' + this.knowledge;
        let knowledge_prompt = 'Update your current knowledge with the following conversation. Include only knowledge you have gained about how to interact with the world and execute actions that you may need to remember for later. Your output should be a short paragraph summarizing what you have learned.\n';
        for (let turn of turns) {
            if (turn.role === 'user') {
                knowledge_prompt += `\n${turn.content}`;
            } else {
                knowledge_prompt += `\nYou: ${turn.content}`;
            }
        }
        let knowledge_turns = [{'role': 'user', 'content': knowledge_prompt}]
        this.knowledge = await sendRequest(knowledge_turns, knowledge_message);
    }

    async add(name, content) {
        let role = 'assistant';
        if (name === 'system') {
            role = 'system';
        }
        else if (name !== this.agent.name) {
            role = 'user';
            content = `${name}: ${content}`;
        }
        this.turns.push({role, content});

        // Summarize older turns into memory
        if (this.turns.length >= this.max_messages) {
            // Don't summarize the examples
            if (this.num_saved_turns + this.save_step >= history_examples.length && 
                    this.num_saved_turns < history_examples.length) {
                await this.storeMemories(
                    this.turns.slice(history_examples.length - this.num_saved_turns, this.save_size)
                );
            } else if (this.num_saved_turns >= history_examples.length) {
                await this.storeMemories(this.turns.slice(0, this.save_size));
            }
            this.turns = this.turns.slice(this.save_step);
            this.num_saved_turns += this.save_step;
        }
    }

    save() {
        // save history object to json file
        mkdirSync('bots', { recursive: true });
        const data = JSON.stringify(this, null, 4);
        writeFileSync('bots/' + this.name + '.json', data, (err) => {
            if (err) {
                throw err;
            }
            console.log("JSON data is saved.");
        });
    }

    load() {
        try {
            // load history object from json file
            const data = readFileSync('bots/' + this.name + '.json', 'utf8');
            const obj = JSON.parse(data);
            this.turns = obj.turns;
            this.bio = obj.bio;
            this.memory = obj.memory;
            this.knowledge = obj.knowledge;
            this.num_saved_turns = obj.num_saved_turns;
        } catch (err) {
            console.log('No history file found for ' + this.name + '.');
        }
    }
}