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scalarrule.cpp
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/
scalarrule.cpp
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/*
* The Doomsday Engine Project
*
* Copyright (c) 2011 Jaakko Keränen <jaakko.keranen@iki.fi>
*
* 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 2 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 "de/ScalarRule"
#include "de/Clock"
#include <QDebug>
namespace de {
ScalarRule::ScalarRule(float initialValue)
: Rule(initialValue), _animation(initialValue), _targetRule(0)
{}
ScalarRule::~ScalarRule()
{
independentOf(_targetRule);
}
void ScalarRule::set(float target, de::TimeDelta transition)
{
independentOf(_targetRule);
_targetRule = 0;
_animation.clock().audienceForTimeChange += this;
_animation.setValue(target, transition);
invalidate();
}
void ScalarRule::set(Rule const &target, TimeDelta transition)
{
set(target.value(), transition);
// Keep a reference.
_targetRule = ⌖
dependsOn(_targetRule);
}
void ScalarRule::shift(float delta)
{
_animation.shift(delta);
invalidate();
}
void ScalarRule::update()
{
// When using a rule for the target, keep it updated.
if(_targetRule)
{
_animation.adjustTarget(_targetRule->value());
}
setValue(_animation);
}
void ScalarRule::timeChanged(Clock const &clock)
{
invalidate();
if(_animation.done())
{
clock.audienceForTimeChange -= this;
}
}
} // namespace de