keys.h

/*
 *  Copyright (C) 2001-2022 The Exult Team
 *
 *  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; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef KEYS_H
#define KEYS_H

#ifdef __GNUC__
#	pragma GCC diagnostic push
#	pragma GCC diagnostic ignored "-Wold-style-cast"
#	pragma GCC diagnostic ignored "-Wzero-as-null-pointer-constant"
#endif    // __GNUC__
#include <SDL.h>
#ifdef __GNUC__
#	pragma GCC diagnostic pop
#endif    // __GNUC__

#include "game.h"

#include <map>
#include <string>
#include <vector>

const int c_maxparams = 4;

struct Action;

struct ActionType {
	const Action* action;
	int           params[c_maxparams];
};

struct ltSDLkeysym {
	bool operator()(SDL_Keysym k1, SDL_Keysym k2) const {
		if (k1.sym == k2.sym) {
			return k1.mod < k2.mod;
		} else {
			return k1.sym < k2.sym;
		}
	}
};

using KeyMap = std::map<SDL_Keysym, ActionType, ltSDLkeysym>;

class KeyBinder {
private:
	KeyMap bindings;

	std::vector<std::string> keyhelp;
	std::vector<std::string> cheathelp;
	std::vector<std::string> mapedithelp;
	std::vector<std::string> last_created_key;
	void                     LoadFromFileInternal(const char* filename);
	KeyMap::const_iterator   TranslateEvent(const SDL_Event& ev) const;

public:
	KeyBinder();
	/* Add keybinding */
	void AddKeyBinding(
			SDL_Keycode key, int mod, const Action* action, int nparams,
			const int* params);

	/* Delete keybinding */
	void DelKeyBinding(SDL_Keycode sym, int mod);

	/* Other methods */
	void Flush() {
		bindings.clear();
		keyhelp.clear();
		cheathelp.clear();
		mapedithelp.clear();
		last_created_key.clear();
	}

	bool DoAction(const ActionType& action, bool press) const;
	bool HandleEvent(const SDL_Event& ev) const;
	bool IsMotionEvent(const SDL_Event& ev) const;

	void LoadFromFile(const char* filename);
	void LoadFromPatch();
	void LoadDefaults();
	void ShowHelp() const;
	void ShowCheatHelp() const;
	void ShowMapeditHelp() const;
	void ShowBrowserKeys() const;

private:
	void ParseText(char* text, int len);
	void ParseLine(char* line);
	void FillParseMaps();
};

#endif /* KEYS_H */