/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "mutationofjb/commands/newroomcommand.h"
#include "mutationofjb/script.h"
#include "mutationofjb/game.h"
#include "mutationofjb/gamedata.h"
#include "common/str.h"

/*
	"NEWROOM " <sceneId> " " <x> " " <y> " " <frame>

	NEWROOM changes the current scene. While doing that, it also executes STARTUP section for the new room.
	However, after that, the execution goes back to the old script to finish commands after NEWROOM.

	All parameters are supposed to be 3 characters long.
	SceneId is the scene to load, x and y are the player's new position and frame is the player's new frame (orientation).
*/

namespace MutationOfJB {

bool NewRoomCommandParser::parse(const Common::String &line, ScriptParseContext &, Command *&command) {
	if (line.size() < 23 || !line.hasPrefix("NEWROOM")) {
		return false;
	}

	const uint8 sceneId = atoi(line.c_str() + 8);
	const uint16 x = atoi(line.c_str() + 12);
	const uint16 y = atoi(line.c_str() + 16);
	const uint8 frame = atoi(line.c_str() + 20);
	command = new NewRoomCommand(sceneId, x, y, frame);
	return true;
}


NewRoomCommand::NewRoomCommand(uint8 sceneId, uint16 x, uint16 y, uint8 frame) : _sceneId(sceneId), _x(x), _y(y), _frame(frame), _innerExecCtx(nullptr) {}

Command::ExecuteResult NewRoomCommand::execute(ScriptExecutionContext &scriptExecCtx) {
	Game &game = scriptExecCtx.getGame();

	// Execute new startup section.
	ExecuteResult res;
	if (!_innerExecCtx) {
		Script *newScript = game.changeSceneDelayScript(_sceneId, game.getGameData()._partB);
		_innerExecCtx = new ScriptExecutionContext(scriptExecCtx.getGame(), newScript);
		res =_innerExecCtx->startStartupSection();
	} else {
		res = _innerExecCtx->runActiveCommand();
	}

	if (res == Finished) {
		delete _innerExecCtx;
		_innerExecCtx = nullptr;
	}

	return res;
}

Common::String NewRoomCommand::debugString() const {
	return Common::String::format("NEWROOM %u %u %u %u", (unsigned int) _sceneId, (unsigned int) _x, (unsigned int) _y, (unsigned int) _frame);
}

}