1 files changed, 51 insertions, 0 deletions
diff --git a/source/blender/simulations/bparticles/offset_handlers.hpp b/source/blender/simulations/bparticles/offset_handlers.hpp
new file mode 100644
index 00000000000..bc64f252b6d
--- /dev/null
+++ b/source/blender/simulations/bparticles/offset_handlers.hpp
@@ -0,0 +1,51 @@
+#pragma once
+
+#include "offset_handler_interface.hpp"
+#include "particle_function.hpp"
+
+namespace BParticles {
+
+class CreateTrailHandler : public OffsetHandler {
+ private:
+  ArrayRef<std::string> m_systems_to_emit;
+  const ParticleFunction &m_inputs_fn;
+  ParticleAction &m_on_birth_action;
+
+ public:
+  CreateTrailHandler(ArrayRef<std::string> systems_to_emit,
+                     const ParticleFunction &inputs_fn,
+                     ParticleAction &on_birth_action)
+      : m_systems_to_emit(systems_to_emit),
+        m_inputs_fn(inputs_fn),
+        m_on_birth_action(on_birth_action)
+  {
+  }
+
+  void execute(OffsetHandlerInterface &interface) override;
+};
+
+class SizeOverTimeHandler : public OffsetHandler {
+ private:
+  const ParticleFunction &m_inputs_fn;
+
+ public:
+  SizeOverTimeHandler(const ParticleFunction &inputs_fn) : m_inputs_fn(inputs_fn)
+  {
+  }
+
+  void execute(OffsetHandlerInterface &interface) override;
+};
+
+class AlwaysExecuteHandler : public OffsetHandler {
+ private:
+  ParticleAction &m_action;
+
+ public:
+  AlwaysExecuteHandler(ParticleAction &action) : m_action(action)
+  {
+  }
+
+  void execute(OffsetHandlerInterface &interface) override;
+};
+
+}  // namespace BParticles