Initial commit

engines/titanic/star_control/motion_control.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/star_control/motion_control.h"
+#include "titanic/star_control/base_stars.h"
+#include "titanic/star_control/error_code.h"
+#include "titanic/star_control/camera.h"
+#include "titanic/support/simple_file.h"
+
+namespace Titanic {
+
+void CCallbackHandler::apply() {
+	_owner->addLockedStar(_vector);
+}
+
+/*------------------------------------------------------------------------*/
+
+CMotionControl::CMotionControl(const CNavigationInfo *src) {
+	_lockCounter = 0;
+	_callback = nullptr;
+
+	if (src) {
+		setMotion(src);
+	} else {
+		reset();
+	}
+}
+
+CMotionControl::~CMotionControl() {
+	clear();
+}
+
+void CMotionControl::clear() {
+	if (_callback) {
+		delete _callback;
+		_callback = nullptr;
+	}
+}
+
+void CMotionControl::reset() {
+	_currVelocity = 0.0;
+	_incVelocity = 0.0;
+	_incAcceleration = 20.0;
+	_minVelocity = 0.0;
+	_maxVelocity = 50000.0;
+	_rotationX = 1.0;
+	_rotationY = 1.0;
+	_rotationZ = 0.0;
+}
+
+void CMotionControl::setCallback(CCallbackHandler *callback) {
+	clear();
+	_callback = callback;
+}
+
+void CMotionControl::setMotion(const CNavigationInfo *src) {
+	_currVelocity = src->_initialVelocity;
+	_minVelocity = src->_minVelocity;
+	_maxVelocity = src->_maxVelocity;
+	_incVelocity = src->_velocity;
+	_incAcceleration = src->_acceleration;
+	_rotationX = src->_rotationX;
+	_rotationY = src->_rotationY;
+	_rotationZ = src->_rotationZ;
+}
+
+void CMotionControl::getMotion(CNavigationInfo *dest) {
+	dest->_initialVelocity = _currVelocity;
+	dest->_minVelocity = _minVelocity;
+	dest->_maxVelocity = _maxVelocity;
+	dest->_velocity = _incVelocity;
+	dest->_acceleration = _incAcceleration;
+	dest->_rotationX = _rotationX;
+	dest->_rotationY = _rotationY;
+	dest->_rotationZ = _rotationZ;
+}
+
+void CMotionControl::accelerate() {
+	if (!isLocked() && _currVelocity < _maxVelocity) {
+		_incVelocity += _incAcceleration;
+		_currVelocity += ABS(_incVelocity);
+	}
+}
+
+void CMotionControl::deccelerate() {
+	if (!isLocked() && _currVelocity > -_maxVelocity) {
+		_incVelocity -= _incAcceleration;
+		_currVelocity -= ABS(_incVelocity);
+	}
+}
+
+void CMotionControl::fullSpeed() {
+	if (!isLocked())
+		_currVelocity = _maxVelocity;
+}
+
+void CMotionControl::stop() {
+	if (!isLocked()) {
+		_currVelocity = 0.0;
+		_incVelocity = 0.0;
+	}
+}
+
+// TODO: this is confusing to negate the val value
+void CMotionControl::load(SimpleFile *file, int version) {
+	if (version == 0) {
+		_currVelocity = file->readFloat();
+		_incVelocity = file->readFloat();
+		_incAcceleration = file->readFloat();
+		_minVelocity = file->readFloat();
+		_maxVelocity = file->readFloat();
+		_rotationX = file->readFloat();
+		_rotationY = file->readFloat();
+		_rotationZ = file->readFloat();
+	}
+}
+
+void CMotionControl::save(SimpleFile *file, int indent) {
+	file->writeFloatLine(_currVelocity, indent);
+	file->writeFloatLine(_incVelocity, indent);
+	file->writeFloatLine(_incAcceleration, indent);
+	file->writeFloatLine(_minVelocity, indent);
+	file->writeFloatLine(_maxVelocity, indent);
+	file->writeFloatLine(_rotationX, indent);
+	file->writeFloatLine(_rotationY, indent);
+	file->writeFloatLine(_rotationZ, indent);
+}
+
+void CMotionControl::incLockCount() {
+	if (_lockCounter < 3)
+	++_lockCounter;
+}
+
+void CMotionControl::decLockCount() {
+	if (_lockCounter > 0)
+		--_lockCounter;
+}
+
+} // End of namespace Titanic