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/* 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 "common/file.h"
#include "access/access.h"
#include "access/debugger.h"
#include "access/amazon/amazon_game.h"

namespace Access {

static int strToInt(const char *s) {
	if (!*s)
		// No string at all
		return 0;
	else if (toupper(s[strlen(s) - 1]) != 'H')
		// Standard decimal string
		return atoi(s);

	// Hexadecimal string
	uint tmp = 0;
	int read = sscanf(s, "%xh", &tmp);
	if (read < 1)
		error("strToInt failed on string \"%s\"", s);
	return (int)tmp;
}

Debugger *Debugger::init(AccessEngine *vm) {
	switch (vm->getGameID()) {
	case GType_Amazon:
		return new Amazon::AmazonDebugger(vm);
	default:
		return new Debugger(vm);
	}
}

/*------------------------------------------------------------------------*/

Debugger::Debugger(AccessEngine *vm) : GUI::Debugger(), _vm(vm) {
	registerCmd("continue", WRAP_METHOD(Debugger, cmdExit));
	registerCmd("scene", WRAP_METHOD(Debugger, Cmd_LoadScene));
}

bool Debugger::Cmd_LoadScene(int argc, const char **argv) {
	if (argc != 2) {
		debugPrintf("Current scene is: %d\n", _vm->_player->_roomNumber);
		debugPrintf("Usage: %s <scene number>\n", argv[0]);
		return true;
	}
	else {
		_vm->_player->_roomNumber = strToInt(argv[1]);

		_vm->_room->_function = FN_CLEAR1;
		_vm->freeChar();
		_vm->_converseMode = 0;
		_vm->_scripts->_endFlag = true;
		_vm->_scripts->_returnCode = 0;

		return false;
	}
}

/*------------------------------------------------------------------------*/

namespace Amazon {

AmazonDebugger::AmazonDebugger(AccessEngine *vm): Debugger(vm) {
	registerCmd("chapter", WRAP_METHOD(AmazonDebugger, Cmd_StartChapter));
}

bool AmazonDebugger::Cmd_StartChapter(int argc, const char **argv) {
	if (argc != 2) {
		debugPrintf("Usage: %s <chapter number>\n", argv[0]);
		return true;
	}

	// Build up a simple one line script to start the given chapter
	byte *chapterScript = (byte *)malloc(5);
	chapterScript[0] = SCRIPT_START_BYTE;
	chapterScript[1] = ROOM_SCRIPT % 256;
	chapterScript[2] = ROOM_SCRIPT / 256;
	chapterScript[3] = 0x80 + 75;			// cmdChapter
	chapterScript[4] = strToInt(argv[1]);	// chapter number
	_vm->_scripts->setScript(new Resource(chapterScript, 5));

	return false;
}

} // End of namespace Amazon

} // End of namespace Access