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engines/titanic/game/gondolier/gondolier_slider.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 "titanic/game/gondolier/gondolier_slider.h"
+
+namespace Titanic {
+
+/**
+ * Y offsets within slider for each successive thumbnail position
+ */
+static const int Y_OFFSETS[11] = { 0, 0, 1, 4, 9, 15, 21, 27, 32, 35, 36 };
+
+BEGIN_MESSAGE_MAP(CGondolierSlider, CGondolierBase)
+	ON_MESSAGE(MouseButtonDownMsg)
+	ON_MESSAGE(MouseDragMoveMsg)
+	ON_MESSAGE(EnterViewMsg)
+	ON_MESSAGE(MouseDragStartMsg)
+	ON_MESSAGE(StatusChangeMsg)
+	ON_MESSAGE(MouseDragEndMsg)
+	ON_MESSAGE(IsHookedOnMsg)
+	ON_MESSAGE(FrameMsg)
+	ON_MESSAGE(SignalObject)
+	ON_MESSAGE(ActMsg)
+END_MESSAGE_MAP()
+
+CGondolierSlider::CGondolierSlider() : CGondolierBase(),
+	_sliderIndex(0), _stringUnused("NULL"), _sliderNum(0), _dragging(false) {
+}
+
+void CGondolierSlider::save(SimpleFile *file, int indent) {
+	file->writeNumberLine(1, indent);
+	file->writeRect(_rectUnused, indent);
+	file->writeRect(_thumbRect, indent);
+	file->writeRect(_defaultThumbRect, indent);
+	file->writeNumberLine(_sliderIndex, indent);
+	file->writeQuotedLine(_stringUnused, indent);
+	file->writeNumberLine(_sliderNum, indent);
+	file->writeQuotedLine(_armName, indent);
+	file->writeQuotedLine(_signalTarget, indent);
+	file->writeNumberLine(_dragging, indent);
+
+	CGondolierBase::save(file, indent);
+}
+
+void CGondolierSlider::load(SimpleFile *file) {
+	file->readNumber();
+	_rectUnused = file->readRect();
+	_thumbRect = file->readRect();
+	_defaultThumbRect = file->readRect();
+	_sliderIndex = file->readNumber();
+	_stringUnused = file->readString();
+	_sliderNum = file->readNumber();
+	_armName = file->readString();
+	_signalTarget = file->readString();
+	_dragging = file->readNumber();
+
+	CGondolierBase::load(file);
+}
+
+bool CGondolierSlider::MouseButtonDownMsg(CMouseButtonDownMsg *msg) {
+	if (!_chestOpen)
+		return false;
+	if (_sliderNum ? _leftSliderHooked : _rightSliderHooked)
+		return false;
+
+	return _thumbRect.contains(msg->_mousePos);
+}
+
+bool CGondolierSlider::MouseDragMoveMsg(CMouseDragMoveMsg *msg) {
+	if (!(_sliderNum ? _leftSliderHooked : _rightSliderHooked)) {
+		int minVal = 0x7FFFFFFF;
+		int foundIndex = -1;
+		int yp = (_defaultThumbRect.top + _defaultThumbRect.bottom) / 2
+			+ _bounds.top - msg->_mousePos.y;
+
+		for (int idx = 0; idx < 11; ++idx) {
+			int yDiff = ABS(yp + Y_OFFSETS[idx]);
+
+			if (yDiff < minVal) {
+				minVal = yDiff;
+				foundIndex = idx;
+			}
+		}
+
+		if (foundIndex >= 0) {
+			_sliderIndex = foundIndex;
+			CSignalObject signalMsg;
+			signalMsg.execute(this);
+		}
+	}
+
+	return true;
+}
+
+bool CGondolierSlider::EnterViewMsg(CEnterViewMsg *msg) {
+	CSignalObject signalMsg;
+	signalMsg.execute(this);
+	return true;
+}
+
+bool CGondolierSlider::MouseDragStartMsg(CMouseDragStartMsg *msg) {
+	if (!_chestOpen)
+		return false;
+	if (_sliderNum ? _leftSliderHooked : _rightSliderHooked)
+		return false;
+
+	_dragging = checkStartDragging(msg);
+	return _dragging;
+}
+
+bool CGondolierSlider::StatusChangeMsg(CStatusChangeMsg *msg) {
+	_sliderIndex = CLIP(10 - msg->_newStatus, 0, 10);
+	_thumbRect = _defaultThumbRect;
+	_thumbRect.translate(_bounds.left, _bounds.top);
+	_thumbRect.translate(0, Y_OFFSETS[_sliderIndex]);
+
+	loadFrame(_sliderIndex);
+	return true;
+}
+
+bool CGondolierSlider::MouseDragEndMsg(CMouseDragEndMsg *msg) {
+	_dragging = false;
+	return true;
+}
+
+bool CGondolierSlider::IsHookedOnMsg(CIsHookedOnMsg *msg) {
+	if (_sliderNum ? _leftSliderHooked : _rightSliderHooked)
+		return false;
+
+	if (!_thumbRect.intersects(msg->_rect)) {
+		_armName = CString();
+		msg->_isHooked = false;
+	} else {
+		_armName = msg->_armName;
+		if (_sliderNum) {
+			_leftSliderHooked = _priorLeftSliderHooked = true;
+		} else {
+			_rightSliderHooked = _priorRightSliderHooked = true;
+		}
+
+		msg->_isHooked = true;
+	}
+
+	return true;
+}
+
+bool CGondolierSlider::FrameMsg(CFrameMsg *msg) {
+	if (_sliderNum ? _leftSliderHooked : _rightSliderHooked) {
+		if (_sliderIndex < 10) {
+			++_sliderIndex;
+			CSignalObject signalMsg;
+			signalMsg.execute(this);
+
+			int yp = 0;
+			if (_sliderIndex > 0)
+				yp = Y_OFFSETS[_sliderIndex] - Y_OFFSETS[_sliderIndex - 1];
+
+			if (!_armName.empty()) {
+				CTranslateObjectMsg transMsg;
+				transMsg._delta = Point(0, yp);
+				transMsg.execute(_armName);
+			}
+		}
+	} else if (_sliderNum ? _priorRightSliderHooked : _priorLeftSliderHooked) {
+		if (!_dragging && !_puzzleSolved && _sliderIndex > 0) {
+			--_sliderIndex;
+			CSignalObject signalMsg;
+			signalMsg.execute(this);
+		}
+	}
+
+	return true;
+}
+
+bool CGondolierSlider::SignalObject(CSignalObject *msg) {
+	_sliderIndex = CLIP(_sliderIndex, 0, 10);
+	_thumbRect = _defaultThumbRect;
+	_thumbRect.translate(_bounds.left, _bounds.top);
+	_thumbRect.translate(0, Y_OFFSETS[_sliderIndex]);
+	loadFrame(_sliderIndex);
+
+	CSignalObject signalMsg;
+	signalMsg._numValue = 10 - _sliderIndex;
+	signalMsg._strValue = _sliderNum ? "Fly" : "Tos";
+	signalMsg.execute(_signalTarget);
+
+	return true;
+}
+
+bool CGondolierSlider::ActMsg(CActMsg *msg) {
+	if (msg->_action == "Unhook") {
+		if (_sliderNum) {
+			_leftSliderHooked = _priorLeftSliderHooked = false;
+			_priorRightSliderHooked = _rightSliderHooked;
+		} else {
+			_rightSliderHooked = _priorRightSliderHooked = false;
+			_priorLeftSliderHooked = _leftSliderHooked;
+		}
+	}
+
+	return true;
+}
+
+} // End of namespace Titanic