90 lines
2.5 KiB
C++
90 lines
2.5 KiB
C++
/* 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/ifitemcommand.h"
|
|
#include "mutationofjb/gamedata.h"
|
|
#include "mutationofjb/script.h"
|
|
#include "mutationofjb/util.h"
|
|
#include "common/str.h"
|
|
#include "common/translation.h"
|
|
|
|
/*
|
|
"IFITEM" <item> ["!"]
|
|
|
|
IFITEM command tests whether an item is in the inventory.
|
|
If it is, execution continues to the next line.
|
|
Otherwise execution continues after first "#ELSE" or "=ELSE".
|
|
The logic can be reversed with exclamation mark at the end.
|
|
|
|
Please note that this does not work like you are used to from saner languages.
|
|
IFITEM does not have any blocks. It only searches for first #ELSE, so you can have stuff like:
|
|
IFITEM item1
|
|
IFITEM item2
|
|
#ELSE
|
|
...
|
|
This is effectively logical AND.
|
|
*/
|
|
|
|
namespace MutationOfJB {
|
|
|
|
bool IfItemCommandParser::parse(const Common::String &line, ScriptParseContext &parseContext, Command *&command) {
|
|
if (line.size() < 8) {
|
|
return false;
|
|
}
|
|
|
|
if (!line.hasPrefix("IFITEM")) {
|
|
return false;
|
|
}
|
|
|
|
const bool negative = (line.lastChar() == '!');
|
|
Common::String item(line.c_str() + 7);
|
|
if (negative) {
|
|
item.deleteLastChar(); // Remove '!'.
|
|
}
|
|
|
|
_lastTag = 0;
|
|
command = new IfItemCommand(item, negative);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
IfItemCommand::IfItemCommand(const Common::String &item, bool negative) :
|
|
_item(item),
|
|
_negative(negative)
|
|
{}
|
|
|
|
Command::ExecuteResult IfItemCommand::execute(GameData &gameData) {
|
|
_cachedResult = gameData._inventory.hasItem(_item);
|
|
if (_negative) {
|
|
_cachedResult = !_cachedResult;
|
|
}
|
|
|
|
return Finished;
|
|
}
|
|
|
|
Common::String IfItemCommand::debugString() const {
|
|
return Common::String::format("IFITEM %s%s", _negative ? "NOT " : "", _item.c_str());
|
|
}
|
|
|
|
}
|
|
|