ParticleEmitter* ParticleEmitter::create(const char* textureFile, TextureBlending textureBlending, unsigned int particleCountMax)
{
Texture* texture = NULL;
texture = Texture::create(textureFile, false);
if (!texture)
{
GP_ERROR("Failed to create texture for particle emitter.");
return NULL;
}
GP_ASSERT(texture->getWidth());
GP_ASSERT(texture->getHeight());
// Use default SpriteBatch material.
SpriteBatch* batch = SpriteBatch::create(texture, NULL, particleCountMax);
texture->release(); // batch owns the texture.
GP_ASSERT(batch);
ParticleEmitter* emitter = new ParticleEmitter(batch, particleCountMax);
GP_ASSERT(emitter);
// By default assume only one frame which uses the entire texture.
emitter->setTextureBlending(textureBlending);
emitter->_spriteTextureWidth = texture->getWidth();
emitter->_spriteTextureHeight = texture->getHeight();
emitter->_spriteTextureWidthRatio = 1.0f / (float)texture->getWidth();
emitter->_spriteTextureHeightRatio = 1.0f / (float)texture->getHeight();
Rectangle texCoord((float)texture->getWidth(), (float)texture->getHeight());
emitter->setSpriteFrameCoords(1, &texCoord);
return emitter;
}
void ParticlesGame::controlEvent(Control* control, EventType evt)
{
std::string id = control->getId();
// Handle UI events.
ParticleEmitter* emitter = _particleEmitterNode->getParticleEmitter();
switch(evt)
{
case Listener::VALUE_CHANGED:
if (control == _startRed)
{
Vector4 startColor = emitter->getColorStart();
startColor.x = _startRed->getValue();
emitter->setColor(startColor, emitter->getColorStartVariance(), emitter->getColorEnd(), emitter->getColorEndVariance());
}
else if (control == _startGreen)
{
Vector4 startColor = emitter->getColorStart();
startColor.y = _startGreen->getValue();
emitter->setColor(startColor, emitter->getColorStartVariance(), emitter->getColorEnd(), emitter->getColorEndVariance());
}
else if (control == _startBlue)
{
Vector4 startColor = emitter->getColorStart();
startColor.z = _startBlue->getValue();
emitter->setColor(startColor, emitter->getColorStartVariance(), emitter->getColorEnd(), emitter->getColorEndVariance());
}
else if (control == _startAlpha)
{
Vector4 startColor = emitter->getColorStart();
startColor.w = _startAlpha->getValue();
emitter->setColor(startColor, emitter->getColorStartVariance(), emitter->getColorEnd(), emitter->getColorEndVariance());
}
else if (control == _endRed)
{
Vector4 endColor = emitter->getColorEnd();
endColor.x = _endRed->getValue();
emitter->setColor(emitter->getColorStart(), emitter->getColorStartVariance(), endColor, emitter->getColorEndVariance());
}
else if (control == _endGreen)
{
Vector4 endColor = emitter->getColorEnd();
endColor.y = _endGreen->getValue();
emitter->setColor(emitter->getColorStart(), emitter->getColorStartVariance(), endColor, emitter->getColorEndVariance());
}
else if (control == _endBlue)
{
Vector4 endColor = emitter->getColorEnd();
endColor.z = _endBlue->getValue();
emitter->setColor(emitter->getColorStart(), emitter->getColorStartVariance(), endColor, emitter->getColorEndVariance());
}
else if (control == _endAlpha)
{
Vector4 endColor = emitter->getColorEnd();
endColor.w = _endAlpha->getValue();
emitter->setColor(emitter->getColorStart(), emitter->getColorStartVariance(), endColor, emitter->getColorEndVariance());
}
else if (control == _startMin)
{
emitter->setSize(_startMin->getValue(), emitter->getSizeStartMax(), emitter->getSizeEndMin(), emitter->getSizeEndMax());
}
else if (control == _startMax)
{
emitter->setSize(emitter->getSizeStartMin(), _startMax->getValue(), emitter->getSizeEndMin(), emitter->getSizeEndMax());
}
else if (control == _endMin)
{
emitter->setSize(emitter->getSizeStartMin(), emitter->getSizeStartMax(), _endMin->getValue(), emitter->getSizeEndMax());
}
else if (control == _endMax)
{
emitter->setSize(emitter->getSizeStartMin(), emitter->getSizeStartMax(), emitter->getSizeEndMin(), _endMax->getValue());
}
else if (control == _energyMin)
{
emitter->setEnergy(_energyMin->getValue(), emitter->getEnergyMax());
}
else if (control == _energyMax)
{
emitter->setEnergy(emitter->getEnergyMin(), _energyMax->getValue());
}
else if (control == _emissionRate)
{
emitter->setEmissionRate(_emissionRate->getValue());
}
else if (id == "posX")
{
Vector3 pos(emitter->getPosition());
pos.x = ((Slider*)control)->getValue();
emitter->setPosition(pos, emitter->getPositionVariance());
}
else if (id == "posY")
{
Vector3 pos(emitter->getPosition());
pos.y = ((Slider*)control)->getValue();
emitter->setPosition(pos, emitter->getPositionVariance());
}
else if (id == "posZ")
{
Vector3 pos(emitter->getPosition());
pos.z = ((Slider*)control)->getValue();
emitter->setPosition(pos, emitter->getPositionVariance());
}
else if (control == _posVarX)
{
Vector3 posVar = emitter->getPositionVariance();
posVar.x = _posVarX->getValue();
emitter->setPosition(emitter->getPosition(), posVar);
}
else if (control == _posVarY)
{
Vector3 posVar = emitter->getPositionVariance();
posVar.y = _posVarY->getValue();
emitter->setPosition(emitter->getPosition(), posVar);
}
else if (control == _posVarZ)
{
Vector3 posVar = emitter->getPositionVariance();
posVar.z = _posVarZ->getValue();
emitter->setPosition(emitter->getPosition(), posVar);
}
else if (control == _velX)
{
Vector3 vel = emitter->getVelocity();
vel.x = _velX->getValue();
emitter->setVelocity(vel, emitter->getVelocityVariance());
}
else if (control == _velY)
{
Vector3 vel = emitter->getVelocity();
vel.y = _velY->getValue();
emitter->setVelocity(vel, emitter->getVelocityVariance());
}
else if (control == _velZ)
{
Vector3 vel = emitter->getVelocity();
vel.z = _velZ->getValue();
emitter->setVelocity(vel, emitter->getVelocityVariance());
}
else if (control == _velVarX)
{
Vector3 velVar = emitter->getVelocityVariance();
velVar.x = _velVarX->getValue();
emitter->setVelocity(emitter->getVelocity(), velVar);
}
else if (control == _velVarY)
{
Vector3 velVar = emitter->getVelocityVariance();
velVar.y = _velVarY->getValue();
emitter->setVelocity(emitter->getVelocity(), velVar);
}
else if (control == _velVarZ)
{
Vector3 velVar = emitter->getVelocityVariance();
velVar.z = _velVarZ->getValue();
emitter->setVelocity(emitter->getVelocity(), velVar);
}
else if (control == _accelX)
{
Vector3 accel = emitter->getAcceleration();
accel.x = _accelX->getValue();
emitter->setAcceleration(accel, emitter->getAccelerationVariance());
}
else if (control == _accelY)
{
Vector3 accel = emitter->getAcceleration();
accel.y = _accelY->getValue();
emitter->setAcceleration(accel, emitter->getAccelerationVariance());
}
else if (control == _accelZ)
{
Vector3 accel = emitter->getAcceleration();
accel.z = _accelZ->getValue();
emitter->setAcceleration(accel, emitter->getAccelerationVariance());
}
else if (control == _accelVarX)
{
Vector3 accelVar = emitter->getAccelerationVariance();
accelVar.x = _accelVarX->getValue();
emitter->setAcceleration(emitter->getAcceleration(), accelVar);
}
else if (control == _accelVarY)
{
Vector3 accelVar = emitter->getAccelerationVariance();
accelVar.y = _accelVarY->getValue();
emitter->setAcceleration(emitter->getAcceleration(), accelVar);
}
else if (control == _accelVarZ)
{
Vector3 accelVar = emitter->getAccelerationVariance();
accelVar.z = _accelVarZ->getValue();
emitter->setAcceleration(emitter->getAcceleration(), accelVar);
}
else if (control == _spinSpeedMin)
{
emitter->setRotationPerParticle(_spinSpeedMin->getValue(), emitter->getRotationPerParticleSpeedMax());
}
else if (control == _spinSpeedMax)
{
emitter->setRotationPerParticle(emitter->getRotationPerParticleSpeedMin(), _spinSpeedMax->getValue());
}
else if (control == _axisX)
{
Vector3 axis = emitter->getRotationAxis();
axis.x = _axisX->getValue();
emitter->setRotation(emitter->getRotationSpeedMin(), emitter->getRotationSpeedMax(), axis, emitter->getRotationAxisVariance());
}
else if (control == _axisY)
{
Vector3 axis = emitter->getRotationAxis();
axis.y = _axisY->getValue();
emitter->setRotation(emitter->getRotationSpeedMin(), emitter->getRotationSpeedMax(), axis, emitter->getRotationAxisVariance());
}
else if (control == _axisZ)
{
Vector3 axis = emitter->getRotationAxis();
axis.z = _axisZ->getValue();
emitter->setRotation(emitter->getRotationSpeedMin(), emitter->getRotationSpeedMax(), axis, emitter->getRotationAxisVariance());
}
else if (control == _axisVarX)
{
Vector3 axisVar = emitter->getRotationAxisVariance();
axisVar.x = _axisVarX->getValue();
emitter->setRotation(emitter->getRotationSpeedMin(), emitter->getRotationSpeedMax(), emitter->getRotationAxis(), axisVar);
}
else if (control == _axisVarY)
{
Vector3 axisVar = emitter->getRotationAxisVariance();
axisVar.y = _axisVarY->getValue();
emitter->setRotation(emitter->getRotationSpeedMin(), emitter->getRotationSpeedMax(), emitter->getRotationAxis(), axisVar);
}
else if (control == _axisVarZ)
{
Vector3 axisVar = emitter->getRotationAxisVariance();
axisVar.z = _axisVarZ->getValue();
emitter->setRotation(emitter->getRotationSpeedMin(), emitter->getRotationSpeedMax(), emitter->getRotationAxis(), axisVar);
}
else if (control == _rotationSpeedMin)
{
emitter->setRotation(_rotationSpeedMin->getValue(), emitter->getRotationSpeedMax(), emitter->getRotationAxis(), emitter->getRotationAxisVariance());
}
else if (control == _rotationSpeedMax)
{
emitter->setRotation(emitter->getRotationSpeedMin(), _rotationSpeedMax->getValue(), emitter->getRotationAxis(), emitter->getRotationAxisVariance());
}
else if (control == _started)
{
if (_started->isChecked())
{
emitter->start();
}
else
{
emitter->stop();
}
}
else if (control == _vsync)
{
Game::getInstance()->setVsync(_vsync->isChecked());
}
else if (id == "additive")
{
if (((RadioButton*)control)->isSelected())
emitter->setTextureBlending(ParticleEmitter::BLEND_ADDITIVE);
}
else if (id == "transparent")
{
if (((RadioButton*)control)->isSelected())
emitter->setTextureBlending(ParticleEmitter::BLEND_TRANSPARENT);
}
else if (id == "multiply")
{
if (((RadioButton*)control)->isSelected())
emitter->setTextureBlending(ParticleEmitter::BLEND_MULTIPLIED);
}
else if (id == "opaque")
{
if (((RadioButton*)control)->isSelected())
emitter->setTextureBlending(ParticleEmitter::BLEND_OPAQUE);
}
break;
case Listener::CLICK:
if (control == _reset)
{
// Re-load the current emitter and reset the view
_particleEmitter = ParticleEmitter::create(_url.c_str());
emitterChanged();
}
else if (control == _emit)
{
// Emit a burst of particles.
unsigned int burstSize = (unsigned int)_burstSize->getValue();
emitter->emitOnce(burstSize);
}
else if (id == "sprite")
{
updateTexture();
}
else if (id == "updateFrames")
{
updateFrames();
}
break;
case Listener::PRESS:
if (control == _zoomIn)
{
_wDown = true;
}
else if (control == _zoomOut)
{
_sDown = true;
}
break;
case Listener::RELEASE:
if (control == _zoomIn)
{
_wDown = false;
}
else if (control == _zoomOut)
{
_sDown = false;
}
else if (control == _save)
{
Game::getInstance()->pause();
saveFile();
Game::getInstance()->resume();
}
else if (control == _load)
{
Game::getInstance()->pause();
std::string filename = FileSystem::displayFileDialog(FileSystem::OPEN, "Select Particle File", "Particle Files", "particle", "res");
if (filename.length() > 0)
{
_url = filename;
_particleEmitter = ParticleEmitter::create(_url.c_str());
emitterChanged();
}
Game::getInstance()->resume();
}
break;
}
}
