コード例 #1
0
        private void UpdateParticlesCreation()
        {
            if (!Enabled.GetValue <bool>())
            {
                return;
            }

            //particles to create in this update
            if (!m_effect.IsStopped)
            {
                float lodBirth = 1.0f;

                if (GetEffect().EnableLods)
                {
                    LODBirth.GetInterpolatedValue <float>(GetEffect().Distance, out lodBirth);
                }

                Birth.GetInterpolatedValue <float>(m_effect.GetElapsedTime(), out m_birthRate);
                m_birthRate *=
                    VRage.Game.MyEngineConstants.UPDATE_STEP_SIZE_IN_SECONDS
                    * (EnableCustomBirth ? m_effect.UserBirthMultiplier : 1.0f)
                    * MyParticlesManager.BirthMultiplierOverall
                    * lodBirth;

                BirthPerFrame.GetInterpolatedValue <float>(m_effect.GetElapsedTime(), out m_birthPerFrame);
                m_birthPerFrame *= (EnableCustomBirth ? m_effect.UserBirthMultiplier : 1.0f)
                                   * MyParticlesManager.BirthMultiplierOverall
                                   * lodBirth;

                m_particlesToCreate += m_birthRate;
            }

            //If speed of effect is too high, there would be created bunches
            //of particles each frame. By interpolating position, we create
            //seamless particle creation.
            Vector3 positionDelta = Vector3.Zero;

            if (!m_lastEffectPosition.HasValue)
            {
                m_lastEffectPosition = EffectMatrix.Translation;
            }

            //Position delta interpolates particle position at fast flying objects, dont do that while motion inheritance
            if (m_particlesToCreate > 1.0f && !m_effect.CalculateDeltaMatrix)
            {
                positionDelta = (EffectMatrix.Translation - m_lastEffectPosition.Value) / (int)m_particlesToCreate;
            }

            //VRageRender.MyRenderProxy.GetRenderProfiler().StartNextBlock("CreateParticle");


            using (ParticlesLock.AcquireExclusiveUsing())
            {
                int maxParticles = 40;
                while (m_particlesToCreate >= 1.0f && maxParticles-- > 0)
                {
                    if (m_effect.CalculateDeltaMatrix)
                    {
                        CreateParticle(EffectMatrix.Translation);
                    }
                    else
                    {
                        CreateParticle(m_lastEffectPosition.Value + positionDelta * (int)m_particlesToCreate);
                    }

                    m_particlesToCreate -= 1.0f;
                }

                while (m_birthPerFrame >= 1.0f && maxParticles-- > 0)
                {
                    if (m_effect.CalculateDeltaMatrix)
                    {
                        CreateParticle(EffectMatrix.Translation);
                    }
                    else
                    {
                        CreateParticle(m_lastEffectPosition.Value + positionDelta * (int)m_birthPerFrame);
                    }

                    m_birthPerFrame -= 1.0f;
                }
            }

            //   VRageRender.MyRenderProxy.GetRenderProfiler().StartNextBlock("OnLife");

            if (OnLife.GetValue <int>() != -1)
            {
                MyParticleGeneration inheritedGeneration = GetInheritedGeneration(OnLife.GetValue <int>());

                if (inheritedGeneration == null)
                {
                    OnLife.SetValue(-1);
                }
                else
                {
                    inheritedGeneration.IsInherited = true;

                    float particlesToCreate = inheritedGeneration.m_particlesToCreate;

                    using (ParticlesLock.AcquireSharedUsing())
                    {
                        foreach (MyAnimatedParticle particle in m_particles)
                        {
                            inheritedGeneration.m_particlesToCreate = particlesToCreate;
                            inheritedGeneration.EffectMatrix        = MatrixD.CreateWorld(particle.ActualPosition, (Vector3D)particle.Velocity, Vector3D.Cross(Vector3D.Left, particle.Velocity));
                            inheritedGeneration.UpdateParticlesCreation();
                        }
                    }
                }
            }

            //  VRageRender.MyRenderProxy.GetRenderProfiler().EndProfilingBlock();

            m_lastEffectPosition = EffectMatrix.Translation;
        }
コード例 #2
0
        private void UpdateParticlesLife()
        {
            int counter = 0;

            VRageRender.MyRenderProxy.GetRenderProfiler().StartProfilingBlock("ParticleGeneration-UpdateParticlesLife");

            MyParticleGeneration inheritedGeneration      = null;
            Vector3D             previousParticlePosition = m_effect.WorldMatrix.Translation;
            float particlesToCreate = 0;

            m_AABB = BoundingBoxD.CreateInvalid();
            m_AABB = m_AABB.Include(ref previousParticlePosition);

            if (OnDie.GetValue <int>() != -1)
            {
                inheritedGeneration = GetInheritedGeneration(OnDie.GetValue <int>());

                if (inheritedGeneration == null)
                {
                    OnDie.SetValue(-1);
                }
                else
                {
                    inheritedGeneration.IsInherited = true;
                    particlesToCreate = inheritedGeneration.m_particlesToCreate;
                }
            }

            VRageRender.MyRenderProxy.GetRenderProfiler().EndProfilingBlock();

            VRageRender.MyRenderProxy.GetRenderProfiler().StartProfilingBlock("ParticleGeneration-Update01");

            Vector3D previousTrail0 = previousParticlePosition;
            Vector3D previousTrail1 = previousParticlePosition;

            using (ParticlesLock.AcquireExclusiveUsing())
            {
                while (counter < m_particles.Count)
                {
                    float motionInheritance;
                    MotionInheritance.GetInterpolatedValue(m_effect.GetElapsedTime(), out motionInheritance);

                    MyAnimatedParticle particle = m_particles[counter];

                    if (motionInheritance > 0)
                    {
                        m_effect.CalculateDeltaMatrix = true;
                    }

                    if (particle.Update())
                    {
                        if (motionInheritance > 0)
                        {
                            var delta = m_effect.GetDeltaMatrix();
                            particle.AddMotionInheritance(ref motionInheritance, ref delta);
                        }

                        if (counter == 0)
                        {
                            previousParticlePosition = particle.ActualPosition;
                            previousTrail0           = particle.Quad.Point1;
                            previousTrail1           = particle.Quad.Point2;
                            particle.Quad.Point0     = particle.ActualPosition;
                            particle.Quad.Point2     = particle.ActualPosition;
                        }

                        counter++;


                        if (particle.Type == MyParticleTypeEnum.Trail)
                        {
                            if (particle.ActualPosition == previousParticlePosition)
                            {
                                particle.Quad.Point0 = particle.ActualPosition;
                                particle.Quad.Point1 = particle.ActualPosition;
                                particle.Quad.Point2 = particle.ActualPosition;
                                particle.Quad.Point3 = particle.ActualPosition;
                            }
                            else
                            {
                                MyPolyLineD polyLine = new MyPolyLineD();
                                polyLine.Thickness = particle.Thickness;
                                polyLine.Point0    = particle.ActualPosition;
                                polyLine.Point1    = previousParticlePosition;

                                Vector3D direction           = polyLine.Point1 - polyLine.Point0;
                                Vector3D normalizedDirection = MyUtils.Normalize(polyLine.Point1 - polyLine.Point0);

                                polyLine.LineDirectionNormalized = normalizedDirection;
                                var camPos = MyTransparentGeometry.Camera.Translation;
                                MyUtils.GetPolyLineQuad(out particle.Quad, ref polyLine, camPos);

                                particle.Quad.Point0 = previousTrail0 + direction * 0.15f;
                                particle.Quad.Point3 = previousTrail1 + direction * 0.15f;
                                previousTrail0       = particle.Quad.Point1;
                                previousTrail1       = particle.Quad.Point2;
                            }
                        }

                        previousParticlePosition = particle.ActualPosition;

                        m_AABB = m_AABB.Include(ref previousParticlePosition);
                        continue;
                    }

                    if (inheritedGeneration != null)
                    {
                        inheritedGeneration.m_particlesToCreate = particlesToCreate;
                        inheritedGeneration.EffectMatrix        = MatrixD.CreateWorld(particle.ActualPosition, Vector3D.Normalize(particle.Velocity), Vector3D.Cross(Vector3D.Left, particle.Velocity));
                        inheritedGeneration.UpdateParticlesCreation();
                    }

                    m_particles.Remove(particle);
                    MyTransparentGeometry.DeallocateAnimatedParticle(particle);
                }
            }

            VRageRender.MyRenderProxy.GetRenderProfiler().EndProfilingBlock();
        }