Remove (ifdef) RNA for simulation, point cloud and particles

For 2.90 release this should not be exposed in the RNA API.

In master this needs to be ON by default, that's all.

Differential Revision: https://developer.blender.org/D8589

14 files changed, 121 insertions, 3 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index bc4d4e032af..cee8675934d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -428,6 +428,10 @@ if(WIN32)
   option(WITH_TBB_MALLOC_PROXY "Enable the TBB malloc replacement" ON)
 endif()
 
+# This should be turned off when Blender enter beta/rc/release
+option(WITH_EXPERIMENTAL_FEATURES "Enable experimental features (still need to enable them in the user preferences)" OFF)
+mark_as_advanced(WITH_EXPERIMENTAL_FEATURES)
+
 # Unit testsing
 option(WITH_GTESTS "Enable GTest unit testing" OFF)
 option(WITH_OPENGL_RENDER_TESTS "Enable OpenGL render related unit testing (Experimental)" OFF)
diff --git a/intern/cycles/blender/CMakeLists.txt b/intern/cycles/blender/CMakeLists.txt
index 2316800e21e..e0fa45dffbc 100644
--- a/intern/cycles/blender/CMakeLists.txt
+++ b/intern/cycles/blender/CMakeLists.txt
@@ -109,6 +109,10 @@ if(WITH_OPENIMAGEDENOISE)
   )
 endif()
 
+if(WITH_EXPERIMENTAL_FEATURES)
+  add_definitions(-DWITH_HAIR_NODES)
+endif()
+
 blender_add_lib(bf_intern_cycles "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")
 
 # avoid link failure with clang 3.4 debug
diff --git a/intern/cycles/blender/blender_curves.cpp b/intern/cycles/blender/blender_curves.cpp
index 82c99631a89..6288c370567 100644
--- a/intern/cycles/blender/blender_curves.cpp
+++ b/intern/cycles/blender/blender_curves.cpp
@@ -628,6 +628,7 @@ void BlenderSync::sync_particle_hair(
   }
 }
 
+#ifdef WITH_HAIR_NODES
 static float4 hair_point_as_float4(BL::HairPoint b_point)
 {
   float4 mP = float3_to_float4(get_float3(b_point.co()));
@@ -806,6 +807,15 @@ void BlenderSync::sync_hair(Hair *hair, BL::Object &b_ob, bool motion, int motio
     export_hair_curves(scene, hair, b_hair);
   }
 }
+#else
+void BlenderSync::sync_hair(Hair *hair, BL::Object &b_ob, bool motion, int motion_step)
+{
+  (void)hair;
+  (void)b_ob;
+  (void)motion;
+  (void)motion_step;
+}
+#endif
 
 void BlenderSync::sync_hair(BL::Depsgraph b_depsgraph,
                             BL::Object b_ob,
diff --git a/source/blender/editors/space_buttons/CMakeLists.txt b/source/blender/editors/space_buttons/CMakeLists.txt
index 25ff6bbd098..75d91174470 100644
--- a/source/blender/editors/space_buttons/CMakeLists.txt
+++ b/source/blender/editors/space_buttons/CMakeLists.txt
@@ -54,4 +54,9 @@ if(WITH_FREESTYLE)
   add_definitions(-DWITH_FREESTYLE)
 endif()
 
+if(WITH_EXPERIMENTAL_FEATURES)
+  add_definitions(-DWITH_PARTICLE_NODES)
+  add_definitions(-DWITH_HAIR_NODES)
+endif()
+
 blender_add_lib(bf_editor_space_buttons "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")
diff --git a/source/blender/editors/space_buttons/buttons_context.c b/source/blender/editors/space_buttons/buttons_context.c
index 16256f6c97e..044fadb9a50 100644
--- a/source/blender/editors/space_buttons/buttons_context.c
+++ b/source/blender/editors/space_buttons/buttons_context.c
@@ -249,12 +249,16 @@ static int buttons_context_path_data(ButsContextPath *path, int type)
   if (RNA_struct_is_a(ptr->type, &RNA_GreasePencil) && (type == -1 || type == OB_GPENCIL)) {
     return 1;
   }
+#ifdef WITH_HAIR_NODES
   if (RNA_struct_is_a(ptr->type, &RNA_Hair) && (type == -1 || type == OB_HAIR)) {
     return 1;
   }
+#endif
+#ifdef WITH_PARTICLE_NODES
   if (RNA_struct_is_a(ptr->type, &RNA_PointCloud) && (type == -1 || type == OB_POINTCLOUD)) {
     return 1;
   }
+#endif
   if (RNA_struct_is_a(ptr->type, &RNA_Volume) && (type == -1 || type == OB_VOLUME)) {
     return 1;
   }
@@ -871,14 +875,18 @@ int buttons_context(const bContext *C, const char *member, bContextDataResult *r
     set_pointer_type(path, result, &RNA_LightProbe);
     return 1;
   }
+#ifdef WITH_HAIR_NODES
   if (CTX_data_equals(member, "hair")) {
     set_pointer_type(path, result, &RNA_Hair);
     return 1;
   }
+#endif
+#ifdef WITH_PARTICLE_NODES
   if (CTX_data_equals(member, "pointcloud")) {
     set_pointer_type(path, result, &RNA_PointCloud);
     return 1;
   }
+#endif
   if (CTX_data_equals(member, "volume")) {
     set_pointer_type(path, result, &RNA_Volume);
     return 1;
diff --git a/source/blender/makesrna/intern/CMakeLists.txt b/source/blender/makesrna/intern/CMakeLists.txt
index 0b43a5a6653..1896813bdb3 100644
--- a/source/blender/makesrna/intern/CMakeLists.txt
+++ b/source/blender/makesrna/intern/CMakeLists.txt
@@ -47,7 +47,6 @@ set(DEFSRC
   rna_fluid.c
   rna_gpencil.c
   rna_gpencil_modifier.c
-  rna_hair.c
   rna_image.c
   rna_key.c
   rna_lattice.c
@@ -69,7 +68,6 @@ set(DEFSRC
   rna_packedfile.c
   rna_palette.c
   rna_particle.c
-  rna_pointcloud.c
   rna_pose.c
   rna_render.c
   rna_rigidbody.c
@@ -79,7 +77,6 @@ set(DEFSRC
   rna_sculpt_paint.c
   rna_sequencer.c
   rna_shader_fx.c
-  rna_simulation.c
   rna_sound.c
   rna_space.c
   rna_speaker.c
@@ -99,6 +96,16 @@ set(DEFSRC
   rna_xr.c
 )
 
+if(WITH_EXPERIMENTAL_FEATURES)
+  add_definitions(-DWITH_PARTICLE_NODES)
+  add_definitions(-DWITH_HAIR_NODES)
+  list(APPEND DEFSRC
+    rna_pointcloud.c
+    rna_simulation.c
+    rna_hair.c
+  )
+endif()
+
 set(APISRC
   rna_action_api.c
   rna_animation_api.c
diff --git a/source/blender/makesrna/intern/makesrna.c b/source/blender/makesrna/intern/makesrna.c
index b7f0fb87536..b49a6885675 100644
--- a/source/blender/makesrna/intern/makesrna.c
+++ b/source/blender/makesrna/intern/makesrna.c
@@ -4285,7 +4285,9 @@ static RNAProcessItem PROCESS_ITEMS[] = {
     {"rna_dynamicpaint.c", NULL, RNA_def_dynamic_paint},
     {"rna_fcurve.c", "rna_fcurve_api.c", RNA_def_fcurve},
     {"rna_gpencil.c", NULL, RNA_def_gpencil},
+#ifdef WITH_HAIR_NODES
     {"rna_hair.c", NULL, RNA_def_hair},
+#endif
     {"rna_image.c", "rna_image_api.c", RNA_def_image},
     {"rna_key.c", NULL, RNA_def_key},
     {"rna_light.c", NULL, RNA_def_light},
@@ -4308,7 +4310,9 @@ static RNAProcessItem PROCESS_ITEMS[] = {
     {"rna_packedfile.c", NULL, RNA_def_packedfile},
     {"rna_palette.c", NULL, RNA_def_palette},
     {"rna_particle.c", NULL, RNA_def_particle},
+#ifdef WITH_PARTICLE_NODES
     {"rna_pointcloud.c", NULL, RNA_def_pointcloud},
+#endif
     {"rna_pose.c", "rna_pose_api.c", RNA_def_pose},
     {"rna_curveprofile.c", NULL, RNA_def_profile},
     {"rna_lightprobe.c", NULL, RNA_def_lightprobe},
@@ -4318,7 +4322,9 @@ static RNAProcessItem PROCESS_ITEMS[] = {
     {"rna_screen.c", NULL, RNA_def_screen},
     {"rna_sculpt_paint.c", NULL, RNA_def_sculpt_paint},
     {"rna_sequencer.c", "rna_sequencer_api.c", RNA_def_sequencer},
+#ifdef WITH_PARTICLE_NODES
     {"rna_simulation.c", NULL, RNA_def_simulation},
+#endif
     {"rna_space.c", "rna_space_api.c", RNA_def_space},
     {"rna_speaker.c", NULL, RNA_def_speaker},
     {"rna_test.c", NULL, RNA_def_test},
diff --git a/source/blender/makesrna/intern/rna_ID.c b/source/blender/makesrna/intern/rna_ID.c
index e9ca0d577ce..f1c125fcbb9 100644
--- a/source/blender/makesrna/intern/rna_ID.c
+++ b/source/blender/makesrna/intern/rna_ID.c
@@ -251,9 +251,11 @@ short RNA_type_to_ID_code(const StructRNA *type)
   if (base_type == &RNA_FreestyleLineStyle) {
     return ID_LS;
   }
+#  ifdef WITH_HAIR_NODES
   if (base_type == &RNA_Hair) {
     return ID_HA;
   }
+#  endif
   if (base_type == &RNA_Lattice) {
     return ID_LT;
   }
@@ -287,9 +289,11 @@ short RNA_type_to_ID_code(const StructRNA *type)
   if (base_type == &RNA_PaintCurve) {
     return ID_PC;
   }
+#  ifdef WITH_PARTICLE_NODES
   if (base_type == &RNA_PointCloud) {
     return ID_PT;
   }
+#  endif
   if (base_type == &RNA_LightProbe) {
     return ID_LP;
   }
@@ -299,9 +303,11 @@ short RNA_type_to_ID_code(const StructRNA *type)
   if (base_type == &RNA_Screen) {
     return ID_SCR;
   }
+#  ifdef WITH_PARTICLE_NODES
   if (base_type == &RNA_Simulation) {
     return ID_SIM;
   }
+#  endif
   if (base_type == &RNA_Sound) {
     return ID_SO;
   }
@@ -355,7 +361,11 @@ StructRNA *ID_code_to_RNA_type(short idcode)
     case ID_GR:
       return &RNA_Collection;
     case ID_HA:
+#  ifdef WITH_HAIR_NODES
       return &RNA_Hair;
+#  else
+      return &RNA_ID;
+#  endif
     case ID_IM:
       return &RNA_Image;
     case ID_KE:
@@ -389,7 +399,11 @@ StructRNA *ID_code_to_RNA_type(short idcode)
     case ID_PC:
       return &RNA_PaintCurve;
     case ID_PT:
+#  ifdef WITH_PARTICLE_NODES
       return &RNA_PointCloud;
+#  else
+      return &RNA_ID;
+#  endif
     case ID_LP:
       return &RNA_LightProbe;
     case ID_SCE:
@@ -397,7 +411,11 @@ StructRNA *ID_code_to_RNA_type(short idcode)
     case ID_SCR:
       return &RNA_Screen;
     case ID_SIM:
+#  ifdef WITH_PARTICLE_NODES
       return &RNA_Simulation;
+#  else
+      return &RNA_ID;
+#  endif
     case ID_SO:
       return &RNA_Sound;
     case ID_SPK:
diff --git a/source/blender/makesrna/intern/rna_internal.h b/source/blender/makesrna/intern/rna_internal.h
index 8045279eef2..6254e40a410 100644
--- a/source/blender/makesrna/intern/rna_internal.h
+++ b/source/blender/makesrna/intern/rna_internal.h
@@ -455,10 +455,16 @@ void RNA_def_main_cachefiles(BlenderRNA *brna, PropertyRNA *cprop);
 void RNA_def_main_paintcurves(BlenderRNA *brna, PropertyRNA *cprop);
 void RNA_def_main_workspaces(BlenderRNA *brna, PropertyRNA *cprop);
 void RNA_def_main_lightprobes(BlenderRNA *brna, PropertyRNA *cprop);
+#ifdef WITH_PARTICLE_NODES
 void RNA_def_main_hairs(BlenderRNA *brna, PropertyRNA *cprop);
+#endif
+#ifdef WITH_HAIR_NODES
 void RNA_def_main_pointclouds(BlenderRNA *brna, PropertyRNA *cprop);
+#endif
 void RNA_def_main_volumes(BlenderRNA *brna, PropertyRNA *cprop);
+#ifdef WITH_PARTICLE_NODES
 void RNA_def_main_simulations(BlenderRNA *brna, PropertyRNA *cprop);
+#endif
 
 /* ID Properties */
 
diff --git a/source/blender/makesrna/intern/rna_main.c b/source/blender/makesrna/intern/rna_main.c
index 97702b06b6f..d83fca69278 100644
--- a/source/blender/makesrna/intern/rna_main.c
+++ b/source/blender/makesrna/intern/rna_main.c
@@ -109,7 +109,9 @@ RNA_MAIN_LISTBASE_FUNCS_DEF(collections)
 RNA_MAIN_LISTBASE_FUNCS_DEF(curves)
 RNA_MAIN_LISTBASE_FUNCS_DEF(fonts)
 RNA_MAIN_LISTBASE_FUNCS_DEF(gpencils)
+#  ifdef WITH_HAIR_NODES
 RNA_MAIN_LISTBASE_FUNCS_DEF(hairs)
+#  endif
 RNA_MAIN_LISTBASE_FUNCS_DEF(images)
 RNA_MAIN_LISTBASE_FUNCS_DEF(lattices)
 RNA_MAIN_LISTBASE_FUNCS_DEF(libraries)
@@ -126,11 +128,15 @@ RNA_MAIN_LISTBASE_FUNCS_DEF(objects)
 RNA_MAIN_LISTBASE_FUNCS_DEF(paintcurves)
 RNA_MAIN_LISTBASE_FUNCS_DEF(palettes)
 RNA_MAIN_LISTBASE_FUNCS_DEF(particles)
+#  ifdef WITH_PARTICLE_NODES
 RNA_MAIN_LISTBASE_FUNCS_DEF(pointclouds)
+#  endif
 RNA_MAIN_LISTBASE_FUNCS_DEF(scenes)
 RNA_MAIN_LISTBASE_FUNCS_DEF(screens)
 RNA_MAIN_LISTBASE_FUNCS_DEF(shapekeys)
+#  ifdef WITH_PARTICLE_NODES
 RNA_MAIN_LISTBASE_FUNCS_DEF(simulations)
+#  endif
 RNA_MAIN_LISTBASE_FUNCS_DEF(sounds)
 RNA_MAIN_LISTBASE_FUNCS_DEF(speakers)
 RNA_MAIN_LISTBASE_FUNCS_DEF(texts)
@@ -384,25 +390,31 @@ void RNA_def_main(BlenderRNA *brna)
        "LightProbes",
        "LightProbe data-blocks",
        RNA_def_main_lightprobes},
+#  ifdef WITH_HAIR_NODES
       {"hairs", "Hair", "rna_Main_hairs_begin", "Hairs", "Hair data-blocks", RNA_def_main_hairs},
+#  endif
+#  ifdef WITH_PARTICLE_NODES
       {"pointclouds",
        "PointCloud",
        "rna_Main_pointclouds_begin",
        "Point Clouds",
        "Point cloud data-blocks",
        RNA_def_main_pointclouds},
+#  endif
       {"volumes",
        "Volume",
        "rna_Main_volumes_begin",
        "Volumes",
        "Volume data-blocks",
        RNA_def_main_volumes},
+#  ifdef WITH_PARTICLE_NODES
       {"simulations",
        "Simulation",
        "rna_Main_simulations_begin",
        "Simulations",
        "Simulation data-blocks",
        RNA_def_main_simulations},
+#  endif
       {NULL, NULL, NULL, NULL, NULL, NULL},
   };
 
diff --git a/source/blender/makesrna/intern/rna_main_api.c b/source/blender/makesrna/intern/rna_main_api.c
index 990a5412093..7c941ddb524 100644
--- a/source/blender/makesrna/intern/rna_main_api.c
+++ b/source/blender/makesrna/intern/rna_main_api.c
@@ -708,6 +708,7 @@ static bGPdata *rna_Main_gpencils_new(Main *bmain, const char *name)
   return gpd;
 }
 
+#  ifdef WITH_HAIR_NODES
 static Hair *rna_Main_hairs_new(Main *bmain, const char *name)
 {
   char safe_name[MAX_ID_NAME - 2];
@@ -717,7 +718,9 @@ static Hair *rna_Main_hairs_new(Main *bmain, const char *name)
   id_us_min(&hair->id);
   return hair;
 }
+#  endif
 
+#  ifdef WITH_PARTICLE_NODES
 static PointCloud *rna_Main_pointclouds_new(Main *bmain, const char *name)
 {
   char safe_name[MAX_ID_NAME - 2];
@@ -727,6 +730,7 @@ static PointCloud *rna_Main_pointclouds_new(Main *bmain, const char *name)
   id_us_min(&pointcloud->id);
   return pointcloud;
 }
+#  endif
 
 static Volume *rna_Main_volumes_new(Main *bmain, const char *name)
 {
@@ -738,6 +742,7 @@ static Volume *rna_Main_volumes_new(Main *bmain, const char *name)
   return volume;
 }
 
+#  ifdef WITH_PARTICLE_NODES
 static Simulation *rna_Main_simulations_new(Main *bmain, const char *name)
 {
   char safe_name[MAX_ID_NAME - 2];
@@ -747,6 +752,7 @@ static Simulation *rna_Main_simulations_new(Main *bmain, const char *name)
   id_us_min(&simulation->id);
   return simulation;
 }
+#  endif
 
 /* tag functions, all the same */
 #  define RNA_MAIN_ID_TAG_FUNCS_DEF(_func_name, _listbase_name, _id_type) \
@@ -790,10 +796,16 @@ RNA_MAIN_ID_TAG_FUNCS_DEF(cachefiles, cachefiles, ID_CF)
 RNA_MAIN_ID_TAG_FUNCS_DEF(paintcurves, paintcurves, ID_PC)
 RNA_MAIN_ID_TAG_FUNCS_DEF(workspaces, workspaces, ID_WS)
 RNA_MAIN_ID_TAG_FUNCS_DEF(lightprobes, lightprobes, ID_LP)
+#  ifdef WITH_HAIR_NODES
 RNA_MAIN_ID_TAG_FUNCS_DEF(hairs, hairs, ID_HA)
+#  endif
+#  ifdef WITH_PARTICLE_NODES
 RNA_MAIN_ID_TAG_FUNCS_DEF(pointclouds, pointclouds, ID_PT)
+#  endif
 RNA_MAIN_ID_TAG_FUNCS_DEF(volumes, volumes, ID_VO)
+#  ifdef WITH_PARTICLE_NODES
 RNA_MAIN_ID_TAG_FUNCS_DEF(simulations, simulations, ID_SIM)
+#  endif
 
 #  undef RNA_MAIN_ID_TAG_FUNCS_DEF
 
@@ -2194,6 +2206,7 @@ void RNA_def_main_lightprobes(BlenderRNA *brna, PropertyRNA *cprop)
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
 
+#  ifdef WITH_HAIR_NODES
 void RNA_def_main_hairs(BlenderRNA *brna, PropertyRNA *cprop)
 {
   StructRNA *srna;
@@ -2237,7 +2250,9 @@ void RNA_def_main_hairs(BlenderRNA *brna, PropertyRNA *cprop)
   parm = RNA_def_boolean(func, "value", 0, "Value", "");
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
+#  endif
 
+#  ifdef WITH_PARTICLE_NODES
 void RNA_def_main_pointclouds(BlenderRNA *brna, PropertyRNA *cprop)
 {
   StructRNA *srna;
@@ -2284,6 +2299,7 @@ void RNA_def_main_pointclouds(BlenderRNA *brna, PropertyRNA *cprop)
   parm = RNA_def_boolean(func, "value", 0, "Value", "");
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
+#  endif
 
 void RNA_def_main_volumes(BlenderRNA *brna, PropertyRNA *cprop)
 {
@@ -2329,6 +2345,7 @@ void RNA_def_main_volumes(BlenderRNA *brna, PropertyRNA *cprop)
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
 
+#  ifdef WITH_PARTICLE_NODES
 void RNA_def_main_simulations(BlenderRNA *brna, PropertyRNA *cprop)
 {
   StructRNA *srna;
@@ -2368,5 +2385,6 @@ void RNA_def_main_simulations(BlenderRNA *brna, PropertyRNA *cprop)
   parm = RNA_def_boolean(func, "value", 0, "Value", "");
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
+#  endif
 
 #endif
diff --git a/source/blender/makesrna/intern/rna_modifier.c b/source/blender/makesrna/intern/rna_modifier.c
index 86f05c350f3..bd507d7b1fc 100644
--- a/source/blender/makesrna/intern/rna_modifier.c
+++ b/source/blender/makesrna/intern/rna_modifier.c
@@ -723,7 +723,9 @@ static StructRNA *rna_Modifier_refine(struct PointerRNA *ptr)
     case eModifierType_WeightedNormal:
       return &RNA_WeightedNormalModifier;
     case eModifierType_Simulation:
+#  ifdef WITH_PARTICLE_NODES
       return &RNA_SimulationModifier;
+#  endif
     /* Default */
     case eModifierType_Fluidsim: /* deprecated */
     case eModifierType_None:
@@ -1630,6 +1632,7 @@ static void rna_ParticleInstanceModifier_particle_system_set(PointerRNA *ptr,
   CLAMP_MIN(psmd->psys, 1);
 }
 
+#  ifdef WITH_PARTICLE_NODES
 static void rna_SimulationModifier_simulation_update(Main *bmain, Scene *scene, PointerRNA *ptr)
 {
   SimulationModifierData *smd = ptr->data;
@@ -1672,6 +1675,7 @@ static void rna_SimulationModifier_data_path_set(PointerRNA *ptr, const char *va
     smd->data_path = NULL;
   }
 }
+#  endif
 
 /**
  * Special set callback that just changes the first bit of the expansion flag.
@@ -6898,6 +6902,7 @@ static void rna_def_modifier_weightednormal(BlenderRNA *brna)
   RNA_define_lib_overridable(false);
 }
 
+#  ifdef WITH_PARTICLE_NODES
 static void rna_def_modifier_simulation(BlenderRNA *brna)
 {
   StructRNA *srna;
@@ -6926,6 +6931,7 @@ static void rna_def_modifier_simulation(BlenderRNA *brna)
 
   RNA_define_lib_overridable(false);
 }
+#  endif
 
 void RNA_def_modifier(BlenderRNA *brna)
 {
@@ -7055,7 +7061,9 @@ void RNA_def_modifier(BlenderRNA *brna)
   rna_def_modifier_meshseqcache(brna);
   rna_def_modifier_surfacedeform(brna);
   rna_def_modifier_weightednormal(brna);
+#  ifdef WITH_PARTICLE_NODES
   rna_def_modifier_simulation(brna);
+#  endif
 }
 
 #endif
diff --git a/source/blender/makesrna/intern/rna_object.c b/source/blender/makesrna/intern/rna_object.c
index 84b83bee089..347ac6fd5a7 100644
--- a/source/blender/makesrna/intern/rna_object.c
+++ b/source/blender/makesrna/intern/rna_object.c
@@ -564,9 +564,17 @@ static StructRNA *rna_Object_data_typef(PointerRNA *ptr)
     case OB_GPENCIL:
       return &RNA_GreasePencil;
     case OB_HAIR:
+#  ifdef WITH_HAIR_NODES
       return &RNA_Hair;
+#  else
+      return &RNA_ID;
+#  endif
     case OB_POINTCLOUD:
+#  ifdef WITH_PARTICLE_NODES
       return &RNA_PointCloud;
+#  else
+      return &RNA_ID;
+#  endif
     case OB_VOLUME:
       return &RNA_Volume;
     default:
diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index 494fcec4c31..5765dac881e 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -2181,6 +2181,7 @@ static void rna_SpaceNodeEditor_node_tree_update(const bContext *C, PointerRNA *
   ED_node_tree_update(C);
 }
 
+#  ifdef WITH_PARTICLE_NODES
 static PointerRNA rna_SpaceNodeEditor_simulation_get(PointerRNA *ptr)
 {
   SpaceNode *snode = (SpaceNode *)ptr->data;
@@ -2212,6 +2213,7 @@ static void rna_SpaceNodeEditor_simulation_set(PointerRNA *ptr,
   }
   snode->id = &sim->id;
 }
+#  endif
 
 static int rna_SpaceNodeEditor_tree_type_get(PointerRNA *ptr)
 {
@@ -6266,6 +6268,7 @@ static void rna_def_space_node(BlenderRNA *brna)
   RNA_def_property_ui_text(
       prop, "ID From", "Data-block from which the edited data-block is linked");
 
+#  ifdef WITH_PARTICLE_NODES
   prop = RNA_def_property(srna, "simulation", PROP_POINTER, PROP_NONE);
   RNA_def_property_flag(prop, PROP_EDITABLE);
   RNA_def_property_struct_type(prop, "Simulation");
@@ -6276,6 +6279,7 @@ static void rna_def_space_node(BlenderRNA *brna)
                                  NULL,
                                  NULL);
   RNA_def_property_update(prop, NC_SPACE | ND_SPACE_NODE, NULL);
+#  endif
 
   prop = RNA_def_property(srna, "path", PROP_COLLECTION, PROP_NONE);
   RNA_def_property_collection_sdna(prop, NULL, "treepath", NULL);