void NNParticle::Update( float dTime )
{
m_NowLifeTime += dTime;
m_Speed = m_StartSpeed + (m_EndSpeed-m_StartSpeed)*(m_NowLifeTime/m_LifeTime);
m_RotationSpeed = m_StartRotationSpeed + (m_EndRotationSpeed-m_StartRotationSpeed)*(m_NowLifeTime/m_LifeTime);
m_Position = m_Position + NNPoint( cos(NNDegreeToRadian(m_Direction)), sin(NNDegreeToRadian(m_Direction)) ) * m_Speed * dTime;
m_Rotation += m_RotationSpeed * dTime;
m_ScaleX = (m_StartScaleX + (m_EndScaleX-m_StartScaleX)*(m_NowLifeTime/m_LifeTime));
m_ScaleY = (m_StartScaleY + (m_EndScaleY-m_StartScaleY)*(m_NowLifeTime/m_LifeTime));
m_Color = (m_StartColor + (m_EndColor-m_StartColor)*(m_NowLifeTime/m_LifeTime));
}
void NNParticleSystem::CreateParticle()
{
NNParticle* pInstance = NNParticle::Create( mTexturePath );
pInstance->SetParentMatrix( this->mMatrix );
float tempDirection = NNDegreeToRadian(NNRandom::NextFloat(mDirection-mSpreadDegree/2.f,mDirection+mSpreadDegree/2.f));
pInstance->SetPosition(
NNRandom::NextFloat(mMinStartRadiusX, mMaxStartRadiusX)*cos(tempDirection),
NNRandom::NextFloat(mMinStartRadiusX, mMaxStartRadiusX)*sin(tempDirection) );
pInstance->SetStartSpeed( NNRandom::NextFloat(mMinStartSpeed, mMaxStartSpeed) );
pInstance->SetEndSpeed( NNRandom::NextFloat(mMinEndSpeed, mMaxEndSpeed) );
pInstance->SetStartScaleX( NNRandom::NextFloat(mMinStartScaleX, mMaxStartScaleX) );
pInstance->SetStartScaleY( NNRandom::NextFloat(mMinStartScaleY, mMaxStartScaleY) );
pInstance->SetEndScaleX( NNRandom::NextFloat(mMinEndScaleX, mMaxEndScaleX) );
pInstance->SetEndScaleY( NNRandom::NextFloat(mMinEndScaleY, mMaxEndScaleY) );
pInstance->SetStartRotationSpeed( NNRandom::NextFloat(mMinStartRotationSpeed, mMaxStartRotationSpeed) );
pInstance->SetEndRotationSpeed( NNRandom::NextFloat(mMinEndRotationSpeed, mMaxEndRotationSpeed) );
pInstance->SetDirection( NNRandom::NextFloat(mDirection-mSpreadDegree/2.f, mDirection+mSpreadDegree/2.f) );
pInstance->SetLifeTime( NNRandom::NextFloat(mMinLifeTime, mMaxLifeTime) );
pInstance->SetStartRGBA(
NNRandom::NextInt(mMinStartColor.GetRed(), mMaxStartColor.GetRed()),
NNRandom::NextInt(mMinStartColor.GetGreen(), mMaxStartColor.GetGreen()),
NNRandom::NextInt(mMinStartColor.GetBlue(), mMaxStartColor.GetBlue()),
NNRandom::NextInt(mMinStartColor.GetAlpha(), mMaxStartColor.GetAlpha()) );
pInstance->SetEndRGBA(
NNRandom::NextInt(mMinEndColor.GetRed(), mMaxEndColor.GetRed()),
NNRandom::NextInt(mMinEndColor.GetGreen(), mMaxEndColor.GetGreen()),
NNRandom::NextInt(mMinEndColor.GetBlue(), mMaxEndColor.GetBlue()),
NNRandom::NextInt(mMinEndColor.GetAlpha(), mMaxEndColor.GetAlpha()) );
mParticleList.push_back( pInstance );
}
