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engines/bagel/spacebar/baglib/expression_object.cpp

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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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "bagel/spacebar/baglib/expression_object.h"
+#include "bagel/spacebar/baglib/master_win.h"
+#include "bagel/spacebar/baglib/var.h"
+#include "bagel/spacebar/baglib/storage_dev_win.h"
+
+namespace Bagel {
+namespace SpaceBar {
+
+CBagExpressionObject::CBagExpressionObject() : CBagObject() {
+	_xObjType = EXPRESS_OBJ;
+	_expression = nullptr;
+	setConditional(false);
+	setVisible(false);
+	setTimeless(true);
+}
+
+CBagExpressionObject::~CBagExpressionObject() {
+	delete _expression;
+	_expression = nullptr;
+
+	CBagObject::detach();
+}
+
+bool CBagExpressionObject::runObject() {
+	if (_expression != nullptr) {
+		CBagVar localVar;
+		_expression->evaluate(false, localVar);
+
+		if (!isConditional()) {
+			if (getFileName().isEmpty())
+				return false;
+
+			const int nIndex = getFileName().find("~~");
+			if (nIndex > 0) {
+				// This is a reference
+				const CBofString objectStr = getFileName().left(nIndex);
+				const CBofString propertyStr = getFileName().mid(nIndex + 2);
+
+				g_SDevManager->setObjectValue(objectStr, propertyStr, localVar.getNumValue());
+
+			} else {
+				CBagVar *pVar = g_VarManager->getVariable(getFileName());
+				if (pVar)
+					pVar->setValue(localVar.getValue());
+			}
+		}
+	}
+
+	return CBagObject::runObject();
+}
+
+ParseCodes CBagExpressionObject::setInfo(CBagIfstream &istr) {
+	bool objectUpdatedFl = false;
+
+	while (!istr.eof()) {
+		const char ch = (char)istr.peek();
+		if (ch == '(') {
+			//
+			//  AS  - n number of slides in sprite
+			//
+			_expression = new CBagExpression();
+			_expression->setInfo(istr);
+			objectUpdatedFl = true;
+		} else {
+			const ParseCodes parseCode = CBagObject::setInfo(istr);
+			if (parseCode == PARSING_DONE) {
+				return PARSING_DONE;
+			}
+
+			if (parseCode == UPDATED_OBJECT) {
+				objectUpdatedFl = true;
+			} else { // rc==UNKNOWN_TOKEN
+				if (objectUpdatedFl)
+					return UPDATED_OBJECT;
+
+				return UNKNOWN_TOKEN;
+			}
+		}
+	}
+	return PARSING_DONE;
+}
+
+} // namespace SpaceBar
+} // namespace Bagel