wesnoth/src/multiplayer_connect.hpp

/* $Id$ */
/*
   Copyright (C) 2007 - 2011
   Part of the Battle for Wesnoth Project http://www.wesnoth.org

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY.

   See the COPYING file for more details.
*/

/** @file */

#ifndef MULTIPLAYER_CONNECT_H_INCLUDED
#define MULTIPLAYER_CONNECT_H_INCLUDED

#include "gamestatus.hpp"
#include "leader_list.hpp"
#include "multiplayer_ui.hpp"
#include "widgets/scrollpane.hpp"
#include "widgets/slider.hpp"
#include "widgets/combo_drag.hpp"

namespace ai {
	struct description;
}

namespace mp {

class connect : public mp::ui
{
public:
	struct connected_user {
		connected_user(const std::string& name, mp::controller controller,
				network::connection connection) :
			name(name), controller(controller), connection(connection)
		{};
		std::string name;
		mp::controller controller;
		network::connection connection;
		operator std::string() const
		{
			return name;
		}
	};

	typedef std::vector<connected_user> connected_user_list;

	class side {
	public:
		side(connect& parent, const config& cfg, int index);

		side(const side& a);

		void add_widgets_to_scrollpane(gui::scrollpane& pane, int pos);

		void process_event();

		/** Returns true if this side changed since last call to changed(). */
		bool changed();

		/**
		 * Gets a config object representing this side.
		 *
		 * If include_leader is set to true, the config objects include the
		 * "type=" defining the leader type, else it does not.
		 */
		config get_config() const;

		/**
		 * Returns true if this side is waiting for a network player and
		 * players allowed.
		 */
		bool available(const std::string& name = "") const;

		/** Returns true, if the player has chosen his leader and this side is ready for the game to start */
		bool ready_for_start() const;

		/** Return true if players are allowed to take this side. */
		bool allow_player() const;

		/** Sets the controller of a side. */
		void set_controller(mp::controller controller);
		mp::controller get_controller() const;

		/** Adds an user to the user list combo. */
		void update_user_list();

		/** Returns the username of this side. */
		const std::string& get_current_player() const
			{ return current_player_; }

		int get_index();

		void set_index(int index);

		const std::string& get_player_id() const;

		/** Sets the username of this side. */
		void set_player_id(const std::string& player_id);

		/** Sets if the joining player has chosen his leader. */
		void set_ready_for_start(bool ready_for_start);

		int get_team();

		void set_team(int team);

		std::vector<std::string> get_children_to_swap();

		std::map<std::string, config> get_side_children();

		void set_side_children(std::map<std::string, config> children);

		/**
		 * Imports data from the network into this side, and updates the UI
		 * accordingly.
		 */
		void import_network_user(const config& data);

		/** Resets this side to its default state, and updates the UI accordingly. */
		void reset(mp::controller controller);

		/** Resolves the random leader / factions. */
		void resolve_random();
		void hide_ai_algorithm_combo(bool invis);
	private:
		void init_ai_algorithm_combo();
		void update_ai_algorithm_combo() {hide_ai_algorithm_combo(parent_->hidden());}

		/** Fill or refresh the faction combo using the proper team color. */
		void update_faction_combo();
		void update_controller_ui();
		void update_ui();

		/**
		 * The mp::connect widget owning this mp::connect::side.
		 *
		 * Used in the constructor, must be first.
		 */
		connect* parent_;

		/**
		 * A non-const config. Be careful not to insert keys when only reading.
		 *
		 * (Use cfg_.get_attribute().)
		 */
		config cfg_;

		// Configurable variables
		int index_;
		std::string id_;
		std::string player_id_;
		std::string save_id_;
		std::string current_player_;
		mp::controller controller_;
		int faction_;
		int team_;
		int color_;
		int gold_;
		int income_;
		std::string leader_;
		std::string gender_;
		std::string ai_algorithm_;
		bool ready_for_start_;

		// Flags for controlling the dialog widgets of the game lobby
		bool gold_lock_;
		bool income_lock_;
		bool team_lock_;
		bool color_lock_;

		// Widgets for this side
		gui::label player_number_;
		gui::combo_drag_ptr combo_controller_;
		gui::label orig_controller_;
		gui::combo combo_ai_algorithm_;
		gui::combo combo_faction_;
		gui::combo combo_leader_;
		gui::combo combo_gender_;
		gui::combo combo_team_;
		gui::combo combo_color_;
		gui::slider slider_gold_;
		gui::slider slider_income_;
		gui::label label_gold_;
		gui::label label_income_;

		bool allow_player_;
		bool allow_changes_;
		bool enabled_;
		bool changed_;
		leader_list_manager llm_;
	};

	friend class side;

	typedef std::vector<side> side_list;

	/**
	 * Pointer to the display
	 */
	game_display* disp_;

	connect(game_display& disp, const config& game_config, chat& c,
			config& gamelist, const mp_game_settings& params, const int num_turns,
			mp::controller default_controller, bool local_players_only = false);

	virtual void process_event();

	void take_reserved_side(connect::side& side, const config& data);

	/**
	 * Returns the game state, which contains all information about the current
	 * scenario.
	 */
	const game_state& get_state();

	/**
	 * Updates the current game state, resolves random factions, and sends a
	 * "start game" message to the network.
	 */
	void start_game();

protected:
	virtual void layout_children(const SDL_Rect& rect);

	virtual void process_network_data(const config& data, const network::connection sock);
	virtual void process_network_error(network::error& error);
	virtual bool accept_connections();
	virtual void process_network_connection(const network::connection sock);

	virtual void hide_children(bool hide=true);

private:
	// Those 2 functions are actually the steps of the (complex)
	// construction of this class.

	/**
	 * Called by the constructor to initialize the game from a
	 * create::parameters structure.
	 */
	void load_game();
	void lists_init();

	/** Convenience function. */
	config* current_config();

	/** Updates the level_ variable to reflect the sides in the sides_ vector. */
	void update_level();

	/** Updates the level, and send a diff to the clients. */
	void update_and_send_diff(bool update_time_of_day = false);

	/** Returns true if there still are sides available for this game. */
	bool sides_available() const;

	/** Returns true if all sides are ready to start the game. */
	bool sides_ready() const;

	/**
	 * Validates whether the game can be started.
	 *
	 * returns                       Can the game be started?
	 */
	bool can_start_game() const;

	/**
	 * Updates the state of the player list, the launch button and of the start
	 * game label, to reflect the actual state.
	 */
	void update_playerlist_state(bool silent=true);

	/** Returns the index of a player, from its id, or -1 if the player was not found. */
	connected_user_list::iterator find_player(const std::string& id);

	/** Returns the side which is taken by a given player, or -1 if none was found. */
	int find_player_side(const std::string& id) const;

	/** Adds a player. */
	void update_user_combos();

	bool local_only_;

	config level_;

	/** This is the "game state" object which is created by this dialog. */
	game_state state_;

	mp_game_settings params_;
	int num_turns_;

	/** The list of available sides for the current era. */
	std::vector<const config *> era_sides_;

	// Lists used for combos
	std::vector<std::string> player_types_;
	std::vector<std::string> player_factions_;
	std::vector<std::string> player_teams_;
	std::vector<std::string> player_colors_;
	std::vector<ai::description*> ai_algorithms_;

	// team_name list and "Team" prefix
	std::vector<std::string> team_names_;
	std::vector<std::string> user_team_names_;
	const std::string team_prefix_;

	side_list sides_;
	connected_user_list users_;

	gui::label waiting_label_;
	bool message_full_;

	controller default_controller_;

	// Widgets
	gui::scrollpane scroll_pane_;

	gui::label type_title_label_;
	gui::label faction_title_label_;
	gui::label team_title_label_;
	gui::label color_title_label_;
	gui::label gold_title_label_;
	gui::label income_title_label_;

	gui::button launch_;
	gui::button cancel_;
	gui::button add_local_player_;

	gui::drop_group_manager_ptr combo_control_group_;

}; // end class connect

} // end namespace mp

#endif