Initial commit

engines/grim/objectstate.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 "engines/grim/objectstate.h"
+#include "engines/grim/savegame.h"
+#include "engines/grim/resource.h"
+#include "engines/grim/bitmap.h"
+
+namespace Grim {
+
+ObjectState::ObjectState(int setup, ObjectState::Position position, const char *bitmap, const char *zbitmap, bool transparency) :
+		_setupID(setup), _pos(position), _visibility(false) {
+	_bitmap = Bitmap::create(bitmap);
+	if (zbitmap) {
+		_zbitmap = Bitmap::create(zbitmap);
+	} else
+		_zbitmap = nullptr;
+}
+
+ObjectState::ObjectState() :
+		_bitmap(nullptr), _zbitmap(nullptr) {
+}
+
+ObjectState::~ObjectState() {
+	delete _bitmap;
+	delete _zbitmap;
+}
+
+const Common::String &ObjectState::getBitmapFilename() const {
+	return _bitmap->getFilename();
+}
+
+void ObjectState::setActiveImage(int val) {
+	if (val) {
+		assert(_bitmap);
+		_bitmap->setActiveImage(val);
+		if (_zbitmap && val <= _zbitmap->getNumImages()) {
+			_zbitmap->setActiveImage(val);
+		}
+	}
+
+	_visibility = val != 0;
+}
+
+void ObjectState::draw() {
+	if (!_visibility)
+		return;
+
+	assert(_bitmap);
+	_bitmap->draw();
+	// The only OBJSTATE_UNDERLAY which has a zbuffer is the bonewagon in set bv. Original doesn't draw that zbuffer,
+	// so we don't either, otherwise this bug will appear: https://github.com/residualvm/residualvm/issues/143
+	if (_zbitmap && _pos != OBJSTATE_UNDERLAY)
+		_zbitmap->draw();
+}
+
+void ObjectState::saveState(SaveGame *savedState) const {
+	savedState->writeBool(_visibility);
+	savedState->writeLESint32(_setupID);
+	savedState->writeLESint32(_pos);
+
+	//_bitmap
+	if (_bitmap) {
+		savedState->writeLESint32(_bitmap->getId());
+	} else {
+		savedState->writeLESint32(0);
+	}
+
+	//_zbitmap
+	if (_zbitmap) {
+		savedState->writeLESint32(_zbitmap->getId());
+	} else {
+		savedState->writeLESint32(0);
+	}
+}
+
+bool ObjectState::restoreState(SaveGame *savedState) {
+	_visibility = savedState->readBool();
+	_setupID    = savedState->readLESint32();
+	_pos        = (Position) savedState->readLESint32();
+
+	_bitmap = Bitmap::getPool().getObject(savedState->readLESint32());
+	_zbitmap = Bitmap::getPool().getObject(savedState->readLESint32());
+
+	return true;
+}
+
+} // end of namespace Grim