352 lines
No EOL
14 KiB
C++
352 lines
No EOL
14 KiB
C++
#include <cstdio>
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#include <readline/readline.h>
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#include <readline/history.h>
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#include <iostream>
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#include <memory>
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#include <cmath>
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#include "game_state.h"
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namespace Hanabi {
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std::ostream& operator<<(std::ostream& os, const std::optional<probability_t>& prob) {
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if (prob.has_value()) {
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os << prob.value() << " ~ " << std::setprecision(5) << boost::rational_cast<double>(prob.value()) * 100 << "%";
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} else {
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os << "unknown";
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}
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return os;
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}
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std::string read_line_memory_safe(const char *prompt) {
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char *line = readline(prompt);
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std::string ret;
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if (line == nullptr) {
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ret = "";
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} else {
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ret = std::string(line);
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}
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free(line);
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return ret;
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}
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constexpr static std::array<std::string, 12> cli_commands = {
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"play",
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"clue",
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"discard",
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"id",
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"state",
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"revert",
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"actions",
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"evaluate",
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"help",
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"quit",
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"initials",
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"opt",
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};
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char * cli_commands_generator(const char *text, int state) {
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std::string text_str (text);
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for(auto& command : cli_commands) {
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if (command.starts_with(text_str) && state-- <= 0) {
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return strdup(command.c_str());
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}
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}
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return nullptr;
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}
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char **
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cli_command_completion(const char *text, int start, int end)
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{
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rl_attempted_completion_over = 1;
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return rl_completion_matches(text, cli_commands_generator);
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}
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Card parse_card(std::string card_str) {
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if (card_str == "trash" or card_str == "kt") {
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return Cards::trash;
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}
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if(card_str.size() != 2) {
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return Cards::unknown;
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}
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auto it = std::find(suit_initials.begin(), suit_initials.end(), card_str[0]);
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if (it == suit_initials.end()) {
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return Cards::unknown;
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}
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const suit_t suit = std::distance(suit_initials.begin(), it);
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try {
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const rank_t rank = 5 - std::stoi(card_str.substr(1, 1));
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return Card {suit, rank};
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} catch(std::invalid_argument&) {
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return Cards::unknown;
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}
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}
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bool ask_for_card_and_rotate_draw(const std::shared_ptr<HanabiStateIF>& game, hand_index_t index, bool play) {
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const auto next_states = game->possible_next_states(index, play);
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if (next_states.size() <= 1) {
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return true;
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}
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std::cout << "Choose drawn card: " << std::endl;
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unsigned num_trash = 0;
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std::optional<probability_t> trash_discard_prob = 0;
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for(const auto &[card_multiplicity, probability]: next_states) {
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if (game->is_trash(card_multiplicity.card)) {
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num_trash += card_multiplicity.multiplicity;
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trash_discard_prob = probability;
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} else {
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std::cout << card_multiplicity.card << " (" << card_multiplicity.multiplicity;
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std::cout << " copie(s) in draw) " << probability << std::endl;
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}
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}
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if (num_trash > 0) {
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std::cout << Cards::trash << " (" << num_trash << " copie(s) in draw) " << trash_discard_prob << std::endl;
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}
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std::stringstream prompt;
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prompt << "draw? [";
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if (num_trash > 0) {
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prompt << Cards::trash;
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} else {
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prompt << next_states.front().first.card;
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}
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prompt << "] ";
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const std::string card_str = read_line_memory_safe(prompt.str().c_str());
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const Card drawn_card = [&card_str, &num_trash, &next_states](){
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if (card_str.empty()) {
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if (num_trash > 0) {
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return Cards::trash;
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}
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return next_states.front().first.card;
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}
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return parse_card(card_str);
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}();
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if (drawn_card == Cards::unknown) {
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std::cout << "Could not parse card " << card_str << std::endl;
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return false;
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}
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auto selected_draw_it = std::find_if(next_states.begin(), next_states.end(), [&drawn_card, &game](const std::pair<CardMultiplicity, std::optional<probability_t>>& pair) {
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return (game->is_trash(pair.first.card) and drawn_card == Cards::trash) or pair.first.card == drawn_card;
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});
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if (selected_draw_it == next_states.end()){
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std::cout << "That card is not in the draw pile, aborting." << std::endl;
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return false;
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};
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game->rotate_next_draw(selected_draw_it->first.card);
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return true;
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}
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void cli(const std::shared_ptr<HanabiStateIF>& game) {
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// Set up GNU readline
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rl_attempted_completion_function = cli_command_completion;
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using_history();
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// Tracks the depth of the replay the user explores. We have to ensure that we don't revert too much.
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unsigned depth = 0;
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while (true) {
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const std::string prompt = read_line_memory_safe("> ");
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add_history(prompt.c_str());
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if (prompt.starts_with("help")) {
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std::cout << "state: print information on current game state." << std::endl;
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std::cout << "clue: give a clue." << std::endl;
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std::cout << "play <card>: play specified card." << std::endl;
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std::cout << "discard: discard trash from hand." << std::endl;
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std::cout << "opt: take optimal action. In case of ties, prefers plays and discards in that order." << std::endl;
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std::cout << "revert <turns>: revert specified number of turns (default 1)." << std::endl;
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std::cout << "actions: display list of reasonable actions to take and their winning chances." << std::endl;
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std::cout << "evaluate: evaluate current game state recursively. Potentially runtime-expensive." << std::endl;
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std::cout << "id: display id of state. Has no inherent meaning, useful for debugging." << std::endl;
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std::cout << "quit: Quit this interactive shell." << std::endl;
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continue;
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}
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if (prompt.starts_with("quit")) {
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std::cout << "Quitting." << std::endl;
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clear_history();
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break;
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}
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if (prompt.starts_with("initials")) {
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if (prompt.length() < 12) {
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std::cout << "At least 3 initials need to be specified" << std::endl;
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continue;
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}
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const std::string new_initials = prompt.substr(9);
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for(size_t i = 0; i < std::min(size_t(6), new_initials.length()); i++) {
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suit_initials[i] = new_initials[i];
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}
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std::cout << "Updated initials to ";
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for(const char c: suit_initials) {
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std::cout << c;
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}
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std::cout << std::endl;
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continue;
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}
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if (prompt.starts_with("state")) {
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std::cout << *game << std::endl;
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const std::optional<probability_t> prob = game->lookup();
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std::cout << "Winning chance: " << prob << std::endl;
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continue;
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}
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if (prompt.starts_with("evaluate")) {
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std::cout << "Evaluating current game state, this might take a while." << std::endl;
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game->evaluate_state();
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std::cout << "Evaluated state." << std::endl;
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continue;
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}
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if (prompt.starts_with("revert")) {
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if (depth == 0) {
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std::cout << "Cannot revert more than base state." << std::endl;
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continue;
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}
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unsigned turns_to_revert = 1;
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if(prompt.length() > 7) {
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try {
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turns_to_revert = std::stoi(prompt.substr(7));
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} catch(const std::invalid_argument&) {
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std::cout << "Could not parse number of turns to revert." << std::endl;
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continue;
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}
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}
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if (turns_to_revert > depth) {
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turns_to_revert = depth;
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std::cout << "Only revererting " << depth << " turns, since this is already the base state." << std::endl;
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}
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std::cout << "Reverting " << turns_to_revert << " turn(s)." << std::endl;
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while(turns_to_revert--) {
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game->revert();
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depth--;
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}
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continue;
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}
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if (prompt.starts_with("id")) {
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std::cout << game->unique_id() << std::endl;
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continue;
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}
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if (prompt.starts_with("play")) {
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const Card card = parse_card(prompt.substr(5,2));
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if (prompt.length() < 7) {
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std::cout << "No card specified." << std::endl;
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continue;
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}
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if (card == Cards::unknown) {
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std::cout << "Could not parse card " << prompt.substr(5,2) << std::endl;
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continue;
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}
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const hand_index_t index = game->find_card_in_hand(card);
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if (index == hand_index_t(-1)) {
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std::cout << "This card is not in the current players hand, aborting." << std::endl;
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continue;
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}
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if (!ask_for_card_and_rotate_draw(game, index, true)) {
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continue;
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}
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game->play(index);
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depth++;
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continue;
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}
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if (prompt.starts_with("discard")) {
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const auto hand = game->cur_hand();
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hand_index_t trash_index = invalid_hand_idx;
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for(hand_index_t index = 0; index < hand.size(); index++) {
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if (game->is_trash(hand[index])) {
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trash_index = index;
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break;
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}
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}
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if (trash_index == invalid_hand_idx) {
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std::cout << "No trash in hand found, discarding not supported." << std::endl;
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continue;
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}
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if (game->num_clues() == max_num_clues) {
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std::cout << "You cannot discard at " << max_num_clues << " clues." << std::endl;
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continue;
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}
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if (!ask_for_card_and_rotate_draw(game, trash_index, false)) {
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continue;
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}
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game->discard(trash_index);
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depth++;
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continue;
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}
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if (prompt.starts_with("clue")) {
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if (game->num_clues() == 0) {
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std::cout << "You cannot give a clue at 0 clues." << std::endl;
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continue;
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}
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game->give_clue();
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depth++;
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continue;
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}
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if (prompt.starts_with("actions")) {
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auto reasonable_actions = game->get_reasonable_actions();
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for (const auto &[action, probability] : reasonable_actions) {
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std::cout << action << ": " << probability << std::endl;
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}
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if(reasonable_actions.empty()) {
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std::cout << "Game is over, no actions to take." << std::endl;
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}
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continue;
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}
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if (prompt.starts_with("opt")) {
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const auto reasonable_actions = game->get_reasonable_actions();
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if(reasonable_actions.empty()) {
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std::cout << "Game is over, no actions to take." << std::endl;
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continue;
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}
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Action best_action;
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std::optional<probability_t> best_probability;
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for (const auto &[action, probability] : game->get_reasonable_actions()) {
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if (!best_probability.has_value() or (probability.has_value() and probability.value() > best_probability.value())) {
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best_action = action;
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best_probability = probability;
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}
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}
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hand_index_t index = 0;
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switch(best_action.type) {
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case ActionType::play:
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std::cout << "Playing " << best_action.card << std::endl;
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index = game->find_card_in_hand(best_action.card);
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if(!ask_for_card_and_rotate_draw(game,index,true)) {
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continue;
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};
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game->play(game->find_card_in_hand(best_action.card));
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break;
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case ActionType::discard:
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std::cout << "Discarding" << std::endl;
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index = game->find_card_in_hand(best_action.card);
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if(!ask_for_card_and_rotate_draw(game, index, false)) {
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continue;
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};
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game->discard(game->find_card_in_hand(best_action.card));
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break;
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case ActionType::clue:
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std::cout << "Giving a clue" << std::endl;
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game->give_clue();
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break;
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default:
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break;
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}
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depth++;
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continue;
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}
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std::cout << "Unrecognized command. Type 'help' for a list of available commands." << std::endl;
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}
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}
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} |