Code/EnginePlugins/ParticlePlugin/Initializer/ParticleInitializer.h - dev - redgpu/ezEngine

Code/EnginePlugins/ParticlePlugin/Initializer/ParticleInitializer.h

47 строк2 KB

Jan Krassnigg

Added Expression Particle Behavior (#1884)

29 мар 2026, 23:32

29 мар 2026, 23:32071fa9d

#pragma once

#include <Foundation/DataProcessing/Stream/ProcessingStream.h>
#include <Foundation/Reflection/Reflection.h>
#include <ParticlePlugin/Declarations.h>
#include <ParticlePlugin/Module/ParticleModule.h>
#include <ParticlePlugin/ParticlePluginDLL.h>

class ezParticleSystemInstance;
class ezProcessingStream;
class ezParticleInitializer;
class ezParticleEffectInstance;

/// Base class for all particle initializers
class EZ_PARTICLEPLUGIN_DLL ezParticleInitializerFactory : public ezReflectedClass
{
  EZ_ADD_DYNAMIC_REFLECTION(ezParticleInitializerFactory, ezReflectedClass);

public:
  virtual const ezRTTI* GetInitializerType() const = 0;
  virtual void CopyInitializerProperties(ezParticleInitializer* pInitializer, bool bFirstTime) const = 0;
  virtual float GetSpawnCountMultiplier(const ezParticleEffectInstance* pEffect) const;

  ezParticleInitializer* CreateInitializer(ezParticleSystemInstance* pOwner) const;

  virtual void Save(ezStreamWriter& inout_stream) const = 0;
  virtual void Load(ezStreamReader& inout_stream, const ezParticleEffectDescriptor& ownerEffectDescriptor, const ezParticleSystemDescriptor& ownerSystemDescriptor) = 0;

  virtual void QueryFinalizerDependencies(ezSet<const ezRTTI*>& inout_finalizerDeps) const {}
};

/// Base class for particle initializers
///
/// Initializers set the initial values of newly spawned particles.
/// They are executed once per particle when it is created.
class EZ_PARTICLEPLUGIN_DLL ezParticleInitializer : public ezParticleModule
{
  EZ_ADD_DYNAMIC_REFLECTION(ezParticleInitializer, ezParticleModule);

  friend class ezParticleSystemInstance;
  friend class ezParticleInitializerFactory;

protected:
  ezParticleInitializer();

  virtual void Process(ezUInt64 uiNumElements) final override {}
};