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75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
/* ResidualVM - A 3D game interpreter
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*
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* ResidualVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the AUTHORS
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "engines/stark/movement/stringpullingpath.h"
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#include "engines/stark/resources/floor.h"
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#include "engines/stark/services/global.h"
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#include "engines/stark/services/services.h"
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#include "math/line3d.h"
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namespace Stark {
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StringPullingPath::StringPullingPath() :
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_targetStep(1) {
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}
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void StringPullingPath::addStep(const Math::Vector3d &position) {
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_steps.push_back(position);
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}
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void StringPullingPath::reset() {
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_steps.clear();
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_targetStep = 1;
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}
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Math::Vector3d StringPullingPath::computeWalkTarget(const Math::Vector3d &fromPosition) {
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Current *current = StarkGlobal->getCurrent();
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Resources::Floor *floor = current->getFloor();
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// HACK: Sometimes the character gets stuck because of rounding errors
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// If we detect the character is stuck on a step, just make it go to the next one.
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// TODO: Improve the string pulling code so that the targets can also be points between two steps.
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if (fromPosition.getDistanceTo(_steps[_targetStep]) < 1.0 && _targetStep < _steps.size() - 1) {
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_targetStep++;
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}
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for (uint i = _targetStep + 1; i < _steps.size(); i++) {
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Math::Line3d testSegment = Math::Line3d(fromPosition, _steps[i]);
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if (!floor->isSegmentInside(testSegment)) {
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break;
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}
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_targetStep = i;
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}
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return _steps[_targetStep];
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}
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bool StringPullingPath::hasSteps() const {
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return _steps.size() > 1;
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}
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} // End of namespace Stark
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