diff options
Diffstat (limited to 'src/imports/particles/particleemitter.cpp')
| -rw-r--r-- | src/imports/particles/particleemitter.cpp | 95 |
1 files changed, 93 insertions, 2 deletions
diff --git a/src/imports/particles/particleemitter.cpp b/src/imports/particles/particleemitter.cpp index 5c4a1b9e03..f490ed643e 100644 --- a/src/imports/particles/particleemitter.cpp +++ b/src/imports/particles/particleemitter.cpp @@ -1,3 +1,44 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Declarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + #include "particleemitter.h" QT_BEGIN_NAMESPACE ParticleEmitter::ParticleEmitter(QSGItem *parent) : @@ -14,9 +55,18 @@ ParticleEmitter::ParticleEmitter(QSGItem *parent) : , m_particleSize(16) , m_particleEndSize(-1) , m_particleSizeVariation(0) + , m_maxParticleCount(-1) + , m_burstLeft(0) + , m_emitLeft(0) { //TODO: Reset speed/acc back to null vector? Or allow null pointer? + connect(this, SIGNAL(maxParticleCountChanged(int)), + this, SIGNAL(particleCountChanged())); + connect(this, SIGNAL(particlesPerSecondChanged(qreal)), + this, SIGNAL(particleCountChanged())); + connect(this, SIGNAL(particleDurationChanged(int)), + this, SIGNAL(particleCountChanged())); } ParticleEmitter::~ParticleEmitter() @@ -25,6 +75,12 @@ ParticleEmitter::~ParticleEmitter() delete m_defaultExtruder; } +void ParticleEmitter::componentComplete() +{ + if(!m_system) + qWarning() << "Emitter created without a particle system specified";//TODO: useful QML warnings, like line number? + QSGItem::componentComplete(); +} void ParticleEmitter::emitWindow(int timeStamp) { Q_UNUSED(timeStamp); @@ -49,10 +105,45 @@ ParticleExtruder* ParticleEmitter::effectiveExtruder() return m_defaultExtruder; } -void ParticleEmitter::burst(qreal seconds) +void ParticleEmitter::pulse(qreal seconds) { + if(!particleCount()) + qWarning() << "pulse called on an emitter with a particle count of zero"; if(!m_emitting) - m_burstLeft = seconds*1000.0; + m_burstLeft = seconds*1000.0;//TODO: Change name to match +} + +void ParticleEmitter::burst(int num) +{ + if(!particleCount()) + qWarning() << "burst called on an emitter with a particle count of zero"; + m_emitLeft += num; +} + +void ParticleEmitter::setMaxParticleCount(int arg) +{ + if (m_maxParticleCount != arg) { + if(arg < 0 && m_maxParticleCount >= 0){ + connect(this, SIGNAL(particlesPerSecondChanged(qreal)), + this, SIGNAL(particleCountChanged())); + connect(this, SIGNAL(particleDurationChanged(int)), + this, SIGNAL(particleCountChanged())); + }else if(arg >= 0 && m_maxParticleCount < 0){ + disconnect(this, SIGNAL(particlesPerSecondChanged(qreal)), + this, SIGNAL(particleCountChanged())); + disconnect(this, SIGNAL(particleDurationChanged(int)), + this, SIGNAL(particleCountChanged())); + } + m_maxParticleCount = arg; + emit maxParticleCountChanged(arg); + } +} + +int ParticleEmitter::particleCount() const +{ + if(m_maxParticleCount >= 0) + return m_maxParticleCount; + return m_particlesPerSecond*((m_particleDuration+m_particleDurationVariation)/1000.0); } QT_END_NAMESPACE |