rna_object_force.cc

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#include <cstdlib>
 
#include "BLT_translation.hh"
 
#include "DNA_object_force_types.h"
#include "DNA_pointcache_types.h"
#include "DNA_scene_types.h"
 
#include "RNA_define.hh"
#include "RNA_enum_types.hh"
 
#include "rna_internal.hh"
 
#include "WM_api.hh"
#include "WM_types.hh"
 
static const EnumPropertyItem effector_shape_items[] = {
    {PFIELD_SHAPE_POINT, "POINT", 0, "Point", "Field originates from the object center"},
    {PFIELD_SHAPE_LINE, "LINE", 0, "Line", "Field originates from the local Z axis of the object"},
    {PFIELD_SHAPE_PLANE,
     "PLANE",
     0,
     "Plane",
     "Field originates from the local XY plane of the object"},
    {PFIELD_SHAPE_SURFACE,
     "SURFACE",
     0,
     "Surface",
     "Field originates from the surface of the object"},
    {PFIELD_SHAPE_POINTS,
     "POINTS",
     0,
     "Every Point",
     "Field originates from all of the vertices of the object"},
    {0, nullptr, 0, nullptr, nullptr},
};
 
#ifdef RNA_RUNTIME
 
#  include <fmt/format.h>
 
#  include "BLI_math_base.h"
 
#  include "RNA_access.hh"
 
/* type specific return values only used from functions */
static const EnumPropertyItem curve_shape_items[] = {
    {PFIELD_SHAPE_POINT, "POINT", 0, "Point", "Field originates from the object center"},
    {PFIELD_SHAPE_LINE, "LINE", 0, "Line", "Field originates from the local Z axis of the object"},
    {PFIELD_SHAPE_PLANE,
     "PLANE",
     0,
     "Plane",
     "Field originates from the local XY plane of the object"},
    {PFIELD_SHAPE_SURFACE, "SURFACE", 0, "Curve", "Field originates from the curve itself"},
    {0, nullptr, 0, nullptr, nullptr},
};
 
static const EnumPropertyItem empty_shape_items[] = {
    {PFIELD_SHAPE_POINT, "POINT", 0, "Point", "Field originates from the object center"},
    {PFIELD_SHAPE_LINE, "LINE", 0, "Line", "Field originates from the local Z axis of the object"},
    {PFIELD_SHAPE_PLANE,
     "PLANE",
     0,
     "Plane",
     "Field originates from the local XY plane of the object"},
    {0, nullptr, 0, nullptr, nullptr},
};
 
static const EnumPropertyItem vortex_shape_items[] = {
    {PFIELD_SHAPE_POINT, "POINT", 0, "Point", ""},
    {PFIELD_SHAPE_PLANE, "PLANE", 0, "Plane", ""},
    {PFIELD_SHAPE_SURFACE, "SURFACE", 0, "Surface", ""},
    {PFIELD_SHAPE_POINTS, "POINTS", 0, "Every Point", ""},
    {0, nullptr, 0, nullptr, nullptr},
};
 
static const EnumPropertyItem curve_vortex_shape_items[] = {
    {PFIELD_SHAPE_POINT, "POINT", 0, "Point", ""},
    {PFIELD_SHAPE_PLANE, "PLANE", 0, "Plane", ""},
    {PFIELD_SHAPE_SURFACE, "SURFACE", 0, "Curve", ""},
    {0, nullptr, 0, nullptr, nullptr},
};
 
static const EnumPropertyItem empty_vortex_shape_items[] = {
    {PFIELD_SHAPE_POINT, "POINT", 0, "Point", ""},
    {PFIELD_SHAPE_PLANE, "PLANE", 0, "Plane", ""},
    {0, nullptr, 0, nullptr, nullptr},
};
 
#  include <fmt/format.h>
 
#  include "MEM_guardedalloc.h"
 
#  include "DNA_cloth_types.h"
#  include "DNA_dynamicpaint_types.h"
#  include "DNA_fluid_types.h"
#  include "DNA_modifier_types.h"
#  include "DNA_particle_types.h"
#  include "DNA_rigidbody_types.h"
#  include "DNA_texture_types.h"
 
#  include "BKE_collection.hh"
#  include "BKE_context.hh"
#  include "BKE_modifier.hh"
#  include "BKE_pointcache.h"
 
#  include "DEG_depsgraph.hh"
#  include "DEG_depsgraph_build.hh"
 
#  include "ED_object.hh"
 
static bool rna_Cache_get_valid_owner_ID(const PointerRNA *ptr, Object **ob, Scene **scene)
{
  switch (GS(ptr->owner_id->name)) {
    case ID_OB:
      *ob = (Object *)ptr->owner_id;
      break;
    case ID_SCE:
      *scene = (Scene *)ptr->owner_id;
      break;
    default:
      BLI_assert_msg(0,
                     "Trying to get PTCacheID from an invalid ID type "
                     "(Only scenes and objects are supported).");
      break;
  }
 
  return (*ob != nullptr || *scene != nullptr);
}
 
static std::optional<std::string> rna_PointCache_path(const PointerRNA *ptr)
{
  PointCache *cache = static_cast<PointCache *>(ptr->data);
 
  Object *ob = nullptr;
  Scene *scene = nullptr;
 
  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return std::nullopt;
  }
 
  /* Scene rigid body. */
  if (scene != nullptr && scene->rigidbody_world->shared != nullptr) {
    if (scene->rigidbody_world->shared->pointcache == cache) {
      return "rigidbody_world.point_cache";
    }
  }
 
  if (!ob) {
    return std::nullopt;
  }
 
  ModifierData *md;
  for (md = static_cast<ModifierData *>(ob->modifiers.first); md; md = md->next) {
    const ModifierTypeInfo *mti = BKE_modifier_get_info(ModifierType(md->type));
 
    if (!(mti->flags & eModifierTypeFlag_UsesPointCache)) {
      continue;
    }
 
    char name_esc[sizeof(md->name) * 2];
    BLI_str_escape(name_esc, md->name, sizeof(name_esc));
 
    switch (md->type) {
      case eModifierType_ParticleSystem: {
        ParticleSystemModifierData *psmd = (ParticleSystemModifierData *)md;
        if (psmd->psys->pointcache == cache) {
          return fmt::format("modifiers[\"{}\"].particle_system.point_cache", name_esc);
        }
        break;
      }
      case eModifierType_DynamicPaint: {
        DynamicPaintModifierData *pmd = (DynamicPaintModifierData *)md;
        if (pmd->canvas) {
          DynamicPaintSurface *surface = static_cast<DynamicPaintSurface *>(
              pmd->canvas->surfaces.first);
          for (; surface; surface = surface->next) {
            if (surface->pointcache == cache) {
              char name_surface_esc[sizeof(surface->name) * 2];
              BLI_str_escape(name_surface_esc, surface->name, sizeof(name_surface_esc));
              return fmt::format(
                  "modifiers[\"{}\"].canvas_settings.canvas_surfaces[\"{}\"].point_cache",
                  name_esc,
                  name_surface_esc);
            }
          }
        }
        break;
      }
      case eModifierType_Cloth: {
        ClothModifierData *clmd = (ClothModifierData *)md;
        if (clmd->point_cache == cache) {
          return fmt::format("modifiers[\"{}\"].point_cache", name_esc);
        }
        break;
      }
      case eModifierType_Softbody: {
        SoftBody *sb = ob->soft;
        if (sb && sb->shared->pointcache == cache) {
          return fmt::format("modifiers[\"{}\"].point_cache", name_esc);
        }
        break;
      }
      default: {
        return fmt::format("modifiers[\"{}\"].point_cache", name_esc);
      }
    }
  }
 
  return std::nullopt;
}
 
static void rna_Cache_change(Main * /*bmain*/, Scene * /*scene*/, PointerRNA *ptr)
{
  Object *ob = nullptr;
  Scene *scene = nullptr;
 
  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return;
  }
 
  PointCache *cache = (PointCache *)ptr->data;
 
  cache->flag |= PTCACHE_OUTDATED;
 
  PTCacheID pid = BKE_ptcache_id_find(ob, scene, cache);
 
  DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
 
  if (pid.cache) {
    /* Just make sure this wasn't changed. */
    if (pid.type == PTCACHE_TYPE_SMOKE_DOMAIN) {
      cache->step = 1;
    }
    cache->flag |= PTCACHE_FLAG_INFO_DIRTY;
  }
}
 
static void rna_Cache_toggle_disk_cache(Main * /*bmain*/, Scene * /*scene*/, PointerRNA *ptr)
{
  Object *ob = nullptr;
  Scene *scene = nullptr;
 
  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return;
  }
 
  PointCache *cache = (PointCache *)ptr->data;
 
  PTCacheID pid = BKE_ptcache_id_find(ob, scene, cache);
 
  /* smoke can only use disk cache */
  if (pid.cache && pid.type != PTCACHE_TYPE_SMOKE_DOMAIN) {
    BKE_ptcache_toggle_disk_cache(&pid);
  }
  else {
    cache->flag ^= PTCACHE_DISK_CACHE;
  }
}
 
bool rna_Cache_use_disk_cache_override_apply(Main * /*bmain*/,
                                             RNAPropertyOverrideApplyContext &rnaapply_ctx)
{
  PointerRNA *ptr_dst = &rnaapply_ctx.ptr_dst;
  PointerRNA *ptr_src = &rnaapply_ctx.ptr_src;
  PropertyRNA *prop_dst = rnaapply_ctx.prop_dst;
  PropertyRNA *prop_src = rnaapply_ctx.prop_src;
  IDOverrideLibraryPropertyOperation *opop = rnaapply_ctx.liboverride_operation;
 
  BLI_assert(RNA_property_type(prop_dst) == PROP_BOOLEAN);
  BLI_assert(opop->operation == LIBOVERRIDE_OP_REPLACE);
  UNUSED_VARS_NDEBUG(opop);
 
  RNA_property_boolean_set(ptr_dst, prop_dst, RNA_property_boolean_get(ptr_src, prop_src));
 
  /* DO NOT call `RNA_property_update_main(bmain, nullptr, ptr_dst, prop_dst);`, that would trigger
   * the whole 'update from mem point cache' process, ending up in the complete deletion of an
   * existing disk-cache if any. */
  return true;
}
 
static void rna_Cache_idname_change(Main * /*bmain*/, Scene * /*scene*/, PointerRNA *ptr)
{
  Object *ob = nullptr;
  Scene *scene = nullptr;
 
  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return;
  }
 
  PointCache *cache = (PointCache *)ptr->data;
  bool use_new_name = true;
 
  /* TODO: check for proper characters */
 
  if (cache->flag & PTCACHE_EXTERNAL) {
    PTCacheID pid = BKE_ptcache_id_find(ob, scene, cache);
 
    if (pid.cache) {
      BKE_ptcache_load_external(&pid);
    }
 
    DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
    WM_main_add_notifier(NC_OBJECT | ND_POINTCACHE, ob);
  }
  else {
    PTCacheID *pid = nullptr, *pid2 = nullptr;
    ListBase pidlist;
 
    BKE_ptcache_ids_from_object(&pidlist, ob, scene, 0);
 
    for (pid = static_cast<PTCacheID *>(pidlist.first); pid; pid = pid->next) {
      if (pid->cache == cache) {
        pid2 = pid;
      }
      else if (cache->name[0] != '\0' && STREQ(cache->name, pid->cache->name)) {
        /* TODO: report "name exists" to user. */
        STRNCPY(cache->name, cache->prev_name);
        use_new_name = false;
      }
    }
 
    if (use_new_name) {
      BLI_path_make_safe_filename(cache->name);
 
      if (pid2 && cache->flag & PTCACHE_DISK_CACHE) {
        char old_name[80];
        char new_name[80];
 
        STRNCPY(old_name, cache->prev_name);
        STRNCPY(new_name, cache->name);
 
        BKE_ptcache_disk_cache_rename(pid2, old_name, new_name);
      }
 
      STRNCPY(cache->prev_name, cache->name);
    }
 
    BLI_freelistN(&pidlist);
  }
}
 
static void rna_Cache_list_begin(CollectionPropertyIterator *iter, PointerRNA *ptr)
{
  PointCache *cache = static_cast<PointCache *>(ptr->data);
  ListBase lb;
 
  while (cache->prev) {
    cache = cache->prev;
  }
 
  lb.first = cache;
  lb.last = nullptr; /* not used by listbase_begin */
 
  rna_iterator_listbase_begin(iter, ptr, &lb, nullptr);
}
static void rna_Cache_active_point_cache_index_range(
    PointerRNA *ptr, int *min, int *max, int * /*softmin*/, int * /*softmax*/)
{
  *min = 0;
  *max = 0;
 
  Object *ob = nullptr;
  Scene *scene = nullptr;
 
  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return;
  }
 
  PointCache *cache = static_cast<PointCache *>(ptr->data);
  PTCacheID pid = BKE_ptcache_id_find(ob, scene, cache);
 
  if (pid.cache) {
    *max = max_ii(0, BLI_listbase_count(pid.ptcaches) - 1);
  }
}
 
static int rna_Cache_active_point_cache_index_get(PointerRNA *ptr)
{
  int num = 0;
 
  Object *ob = nullptr;
  Scene *scene = nullptr;
 
  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return num;
  }
 
  PointCache *cache = static_cast<PointCache *>(ptr->data);
  PTCacheID pid = BKE_ptcache_id_find(ob, scene, cache);
 
  if (pid.cache) {
    num = BLI_findindex(pid.ptcaches, cache);
  }
 
  return num;
}
 
static void rna_Cache_active_point_cache_index_set(PointerRNA *ptr, int value)
{
  Object *ob = nullptr;
  Scene *scene = nullptr;
 
  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return;
  }
 
  PointCache *cache = static_cast<PointCache *>(ptr->data);
  PTCacheID pid = BKE_ptcache_id_find(ob, scene, cache);
 
  if (pid.cache) {
    *(pid.cache_ptr) = static_cast<PointCache *>(BLI_findlink(pid.ptcaches, value));
  }
}
 
static void rna_PointCache_frame_step_range(
    PointerRNA *ptr, int *min, int *max, int * /*softmin*/, int * /*softmax*/)
{
  *min = 1;
  *max = 20;
 
  Object *ob = nullptr;
  Scene *scene = nullptr;
 
  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return;
  }
 
  PointCache *cache = static_cast<PointCache *>(ptr->data);
  PTCacheID pid = BKE_ptcache_id_find(ob, scene, cache);
 
  if (pid.cache) {
    *max = pid.max_step;
  }
}
 
int rna_Cache_info_length(PointerRNA *ptr)
{
  Object *ob = nullptr;
  Scene *scene = nullptr;
 
  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return 0;
  }
 
  PointCache *cache = (PointCache *)ptr->data;
 
  PTCacheID pid = BKE_ptcache_id_find(ob, scene, cache);
 
  if (pid.cache != nullptr && pid.cache->flag & PTCACHE_FLAG_INFO_DIRTY) {
    BKE_ptcache_update_info(&pid);
  }
 
  return int(strlen(cache->info));
}
 
static std::optional<std::string> rna_CollisionSettings_path(const PointerRNA * /*ptr*/)
{
  /* both methods work ok, but return the shorter path */
#  if 0
  Object *ob = (Object *)ptr->owner_id;
  ModifierData *md = (ModifierData *)BKE_modifiers_findby_type(ob, eModifierType_Collision);
 
  if (md) {
    char name_esc[sizeof(md->name) * 2];
 
    BLI_str_escape(name_esc, md->name, sizeof(name_esc));
    return fmt::format("modifiers[\"{}\"].settings", name_esc);
  }
  else {
    return "";
  }
#  else
  /* more reliable */
  return "collision";
#  endif
}
 
static bool rna_SoftBodySettings_use_edges_get(PointerRNA *ptr)
{
  Object *data = (Object *)(ptr->owner_id);
  return (((data->softflag) & OB_SB_EDGES) != 0);
}
 
static void rna_SoftBodySettings_use_edges_set(PointerRNA *ptr, bool value)
{
  Object *data = (Object *)(ptr->owner_id);
  if (value) {
    data->softflag |= OB_SB_EDGES;
  }
  else {
    data->softflag &= ~OB_SB_EDGES;
  }
}
 
static bool rna_SoftBodySettings_use_goal_get(PointerRNA *ptr)
{
  Object *data = (Object *)(ptr->owner_id);
  return (((data->softflag) & OB_SB_GOAL) != 0);
}
 
static void rna_SoftBodySettings_use_goal_set(PointerRNA *ptr, bool value)
{
  Object *data = (Object *)(ptr->owner_id);
  if (value) {
    data->softflag |= OB_SB_GOAL;
  }
  else {
    data->softflag &= ~OB_SB_GOAL;
  }
}
 
static bool rna_SoftBodySettings_stiff_quads_get(PointerRNA *ptr)
{
  Object *data = (Object *)(ptr->owner_id);
  return (((data->softflag) & OB_SB_QUADS) != 0);
}
 
static void rna_SoftBodySettings_stiff_quads_set(PointerRNA *ptr, bool value)
{
  Object *data = (Object *)(ptr->owner_id);
  if (value) {
    data->softflag |= OB_SB_QUADS;
  }
  else {
    data->softflag &= ~OB_SB_QUADS;
  }
}
 
static bool rna_SoftBodySettings_self_collision_get(PointerRNA *ptr)
{
  Object *data = (Object *)(ptr->owner_id);
  return (((data->softflag) & OB_SB_SELF) != 0);
}
 
static void rna_SoftBodySettings_self_collision_set(PointerRNA *ptr, bool value)
{
  Object *data = (Object *)(ptr->owner_id);
  if (value) {
    data->softflag |= OB_SB_SELF;
  }
  else {
    data->softflag &= ~OB_SB_SELF;
  }
}
 
static int rna_SoftBodySettings_new_aero_get(PointerRNA *ptr)
{
  Object *data = (Object *)(ptr->owner_id);
  if (data->softflag & OB_SB_AERO_ANGLE) {
    return 1;
  }
  else {
    return 0;
  }
}
 
static void rna_SoftBodySettings_new_aero_set(PointerRNA *ptr, int value)
{
  Object *data = (Object *)(ptr->owner_id);
  if (value == 1) {
    data->softflag |= OB_SB_AERO_ANGLE;
  }
  else { /* value == 0 */
    data->softflag &= ~OB_SB_AERO_ANGLE;
  }
}
 
static bool rna_SoftBodySettings_face_collision_get(PointerRNA *ptr)
{
  Object *data = (Object *)(ptr->owner_id);
  return (((data->softflag) & OB_SB_FACECOLL) != 0);
}
 
static void rna_SoftBodySettings_face_collision_set(PointerRNA *ptr, bool value)
{
  Object *data = (Object *)(ptr->owner_id);
  if (value) {
    data->softflag |= OB_SB_FACECOLL;
  }
  else {
    data->softflag &= ~OB_SB_FACECOLL;
  }
}
 
static bool rna_SoftBodySettings_edge_collision_get(PointerRNA *ptr)
{
  Object *data = (Object *)(ptr->owner_id);
  return (((data->softflag) & OB_SB_EDGECOLL) != 0);
}
 
static void rna_SoftBodySettings_edge_collision_set(PointerRNA *ptr, bool value)
{
  Object *data = (Object *)(ptr->owner_id);
  if (value) {
    data->softflag |= OB_SB_EDGECOLL;
  }
  else {
    data->softflag &= ~OB_SB_EDGECOLL;
  }
}
 
static void rna_SoftBodySettings_goal_vgroup_get(PointerRNA *ptr, char *value)
{
  SoftBody *sb = (SoftBody *)ptr->data;
  rna_object_vgroup_name_index_get(ptr, value, sb->vertgroup);
}
 
static int rna_SoftBodySettings_goal_vgroup_length(PointerRNA *ptr)
{
  SoftBody *sb = (SoftBody *)ptr->data;
  return rna_object_vgroup_name_index_length(ptr, sb->vertgroup);
}
 
static void rna_SoftBodySettings_goal_vgroup_set(PointerRNA *ptr, const char *value)
{
  SoftBody *sb = (SoftBody *)ptr->data;
  rna_object_vgroup_name_index_set(ptr, value, &sb->vertgroup);
}
 
static void rna_SoftBodySettings_mass_vgroup_set(PointerRNA *ptr, const char *value)
{
  SoftBody *sb = (SoftBody *)ptr->data;
  rna_object_vgroup_name_set(ptr, value, sb->namedVG_Mass, sizeof(sb->namedVG_Mass));
}
 
static void rna_SoftBodySettings_spring_vgroup_set(PointerRNA *ptr, const char *value)
{
  SoftBody *sb = (SoftBody *)ptr->data;
  rna_object_vgroup_name_set(ptr, value, sb->namedVG_Spring_K, sizeof(sb->namedVG_Spring_K));
}
 
static std::optional<std::string> rna_SoftBodySettings_path(const PointerRNA *ptr)
{
  const Object *ob = (Object *)ptr->owner_id;
  const ModifierData *md = BKE_modifiers_findby_type(ob, eModifierType_Softbody);
  char name_esc[sizeof(md->name) * 2];
 
  BLI_str_escape(name_esc, md->name, sizeof(name_esc));
  return fmt::format("modifiers[\"{}\"].settings", name_esc);
}
 
static int particle_id_check(const PointerRNA *ptr)
{
  ID *id = ptr->owner_id;
 
  return (GS(id->name) == ID_PA);
}
 
static void rna_FieldSettings_update(Main * /*bmain*/, Scene * /*scene*/, PointerRNA *ptr)
{
  if (particle_id_check(ptr)) {
    ParticleSettings *part = (ParticleSettings *)ptr->owner_id;
 
    if (part->pd->forcefield != PFIELD_TEXTURE && part->pd->tex) {
      id_us_min(&part->pd->tex->id);
      part->pd->tex = nullptr;
    }
 
    if (part->pd2 && part->pd2->forcefield != PFIELD_TEXTURE && part->pd2->tex) {
      id_us_min(&part->pd2->tex->id);
      part->pd2->tex = nullptr;
    }
 
    DEG_id_tag_update(&part->id,
                      ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY | ID_RECALC_ANIMATION |
                          ID_RECALC_PSYS_RESET);
    WM_main_add_notifier(NC_OBJECT | ND_DRAW, nullptr);
  }
  else {
    Object *ob = (Object *)ptr->owner_id;
 
    if (ob->pd->forcefield != PFIELD_TEXTURE && ob->pd->tex) {
      id_us_min(&ob->pd->tex->id);
      ob->pd->tex = nullptr;
    }
 
    /* In the case of specific force-fields that are using the #EffectorData's normal, we need to
     * rebuild mesh and BVH-tree for #SurfaceModifier to work correctly. */
    if (ELEM(ob->pd->shape, PFIELD_SHAPE_SURFACE, PFIELD_SHAPE_POINTS) ||
        ob->pd->forcefield == PFIELD_GUIDE)
    {
      DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
    }
 
    DEG_id_tag_update(&ob->id, ID_RECALC_TRANSFORM);
    WM_main_add_notifier(NC_OBJECT | ND_DRAW, ob);
  }
}
 
static void rna_FieldSettings_shape_update(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  if (!particle_id_check(ptr)) {
    Object *ob = (Object *)ptr->owner_id;
    blender::ed::object::check_force_modifiers(bmain, scene, ob);
 
    DEG_id_tag_update(&ob->id, ID_RECALC_TRANSFORM);
    WM_main_add_notifier(NC_OBJECT | ND_DRAW, ob);
    WM_main_add_notifier(NC_OBJECT | ND_MODIFIER, ob);
  }
}
 
static void rna_FieldSettings_type_set(PointerRNA *ptr, int value)
{
  PartDeflect *part_deflect = (PartDeflect *)ptr->data;
 
  part_deflect->forcefield = value;
 
  if (!particle_id_check(ptr)) {
    Object *ob = (Object *)ptr->owner_id;
    ob->pd->forcefield = value;
    if (ELEM(value, PFIELD_WIND, PFIELD_VORTEX)) {
      ob->empty_drawtype = OB_SINGLE_ARROW;
    }
    else {
      ob->empty_drawtype = OB_PLAINAXES;
    }
  }
}
 
static void rna_FieldSettings_dependency_update(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  DEG_relations_tag_update(bmain);
 
  if (particle_id_check(ptr)) {
    DEG_id_tag_update(ptr->owner_id,
                      ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY | ID_RECALC_ANIMATION |
                          ID_RECALC_PSYS_RESET);
  }
  else {
    Object *ob = (Object *)ptr->owner_id;
 
    rna_FieldSettings_shape_update(bmain, scene, ptr);
 
    if (ob->type == OB_CURVES_LEGACY && ob->pd->forcefield == PFIELD_GUIDE) {
      DEG_id_tag_update(&ob->id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY | ID_RECALC_ANIMATION);
    }
    else {
      DEG_id_tag_update(&ob->id, ID_RECALC_TRANSFORM);
    }
 
    WM_main_add_notifier(NC_OBJECT | ND_DRAW, ob);
  }
}
 
static std::optional<std::string> rna_FieldSettings_path(const PointerRNA *ptr)
{
  PartDeflect *pd = (PartDeflect *)ptr->data;
 
  /* Check through all possible places the settings can be to find the right one */
 
  if (particle_id_check(ptr)) {
    /* particle system force field */
    ParticleSettings *part = (ParticleSettings *)ptr->owner_id;
 
    if (part->pd == pd) {
      return "force_field_1";
    }
    else if (part->pd2 == pd) {
      return "force_field_2";
    }
  }
  else {
    /* object force field */
    Object *ob = (Object *)ptr->owner_id;
 
    if (ob->pd == pd) {
      return "field";
    }
  }
  return std::nullopt;
}
 
static void rna_EffectorWeight_update(Main * /*bmain*/, Scene * /*scene*/, PointerRNA *ptr)
{
  ID *id = ptr->owner_id;
 
  if (id && GS(id->name) == ID_SCE) {
    Scene *scene = (Scene *)id;
    FOREACH_SCENE_OBJECT_BEGIN (scene, ob) {
      BKE_ptcache_object_reset(scene, ob, PTCACHE_RESET_DEPSGRAPH);
    }
    FOREACH_SCENE_OBJECT_END;
  }
  else {
    DEG_id_tag_update(id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_RESET);
    WM_main_add_notifier(NC_OBJECT | ND_DRAW, nullptr);
  }
}
 
static void rna_EffectorWeight_dependency_update(Main *bmain, Scene * /*scene*/, PointerRNA *ptr)
{
  DEG_relations_tag_update(bmain);
 
  DEG_id_tag_update(ptr->owner_id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_RESET);
 
  WM_main_add_notifier(NC_OBJECT | ND_DRAW, nullptr);
}
 
static std::optional<std::string> rna_EffectorWeight_path(const PointerRNA *ptr)
{
  EffectorWeights *ew = (EffectorWeights *)ptr->data;
  /* Check through all possible places the settings can be to find the right one */
 
  if (particle_id_check(ptr)) {
    /* particle effector weights */
    ParticleSettings *part = (ParticleSettings *)ptr->owner_id;
 
    if (part->effector_weights == ew) {
      return "effector_weights";
    }
  }
  else {
    ID *id = ptr->owner_id;
 
    if (id && GS(id->name) == ID_SCE) {
      const Scene *scene = (Scene *)id;
      const RigidBodyWorld *rbw = scene->rigidbody_world;
 
      if (rbw->effector_weights == ew) {
        return "rigidbody_world.effector_weights";
      }
    }
 
    Object *ob = (Object *)id;
    ModifierData *md;
 
    /* check softbody modifier */
    md = (ModifierData *)BKE_modifiers_findby_type(ob, eModifierType_Softbody);
    if (md) {
      /* no pointer from modifier data to actual softbody storage, would be good to add */
      if (ob->soft->effector_weights == ew) {
        char name_esc[sizeof(md->name) * 2];
        BLI_str_escape(name_esc, md->name, sizeof(name_esc));
        return fmt::format("modifiers[\"{}\"].settings.effector_weights", name_esc);
      }
    }
 
    /* check cloth modifier */
    md = (ModifierData *)BKE_modifiers_findby_type(ob, eModifierType_Cloth);
    if (md) {
      ClothModifierData *cmd = (ClothModifierData *)md;
      if (cmd->sim_parms->effector_weights == ew) {
        char name_esc[sizeof(md->name) * 2];
        BLI_str_escape(name_esc, md->name, sizeof(name_esc));
        return fmt::format("modifiers[\"{}\"].settings.effector_weights", name_esc);
      }
    }
 
    /* check fluid modifier */
    md = (ModifierData *)BKE_modifiers_findby_type(ob, eModifierType_Fluid);
    if (md) {
      FluidModifierData *fmd = (FluidModifierData *)md;
      if (fmd->type == MOD_FLUID_TYPE_DOMAIN && fmd->domain && fmd->domain->effector_weights == ew)
      {
        char name_esc[sizeof(md->name) * 2];
        BLI_str_escape(name_esc, md->name, sizeof(name_esc));
        return fmt::format("modifiers[\"{}\"].domain_settings.effector_weights", name_esc);
      }
    }
 
    /* check dynamic paint modifier */
    md = (ModifierData *)BKE_modifiers_findby_type(ob, eModifierType_DynamicPaint);
    if (md) {
      DynamicPaintModifierData *pmd = (DynamicPaintModifierData *)md;
 
      if (pmd->canvas) {
        DynamicPaintSurface *surface = static_cast<DynamicPaintSurface *>(
            pmd->canvas->surfaces.first);
 
        for (; surface; surface = surface->next) {
          if (surface->effector_weights == ew) {
            char name_esc[sizeof(md->name) * 2];
            char name_esc_surface[sizeof(surface->name) * 2];
 
            BLI_str_escape(name_esc, md->name, sizeof(name_esc));
            BLI_str_escape(name_esc_surface, surface->name, sizeof(name_esc_surface));
            return fmt::format(
                "modifiers[\"{}\"].canvas_settings.canvas_surfaces[\"{}\"]"
                ".effector_weights",
                name_esc,
                name_esc_surface);
          }
        }
      }
    }
  }
  return std::nullopt;
}
 
static void rna_CollisionSettings_dependency_update(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Object *ob = (Object *)ptr->owner_id;
  ModifierData *md = BKE_modifiers_findby_type(ob, eModifierType_Collision);
 
  /* add the modifier if needed */
  if (ob->pd->deflect && !md) {
    blender::ed::object::modifier_add(nullptr, bmain, scene, ob, nullptr, eModifierType_Collision);
  }
 
  DEG_id_tag_update(&ob->id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY);
  WM_main_add_notifier(NC_OBJECT | ND_DRAW, ob);
}
 
static void rna_CollisionSettings_update(Main * /*bmain*/, Scene * /*scene*/, PointerRNA *ptr)
{
  Object *ob = (Object *)ptr->owner_id;
 
  DEG_id_tag_update(&ob->id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY);
  WM_main_add_notifier(NC_OBJECT | ND_DRAW, ob);
}
 
static void rna_softbody_update(Main * /*bmain*/, Scene * /*scene*/, PointerRNA *ptr)
{
  Object *ob = (Object *)ptr->owner_id;
 
  DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
  WM_main_add_notifier(NC_OBJECT | ND_MODIFIER, ob);
}
 
static void rna_softbody_dependency_update(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  DEG_relations_tag_update(bmain);
  rna_softbody_update(bmain, scene, ptr);
}
 
static const EnumPropertyItem *rna_Effector_shape_itemf(bContext * /*C*/,
                                                        PointerRNA *ptr,
                                                        PropertyRNA * /*prop*/,
                                                        bool * /*r_free*/)
{
  Object *ob = nullptr;
 
  if (particle_id_check(ptr)) {
    return empty_shape_items;
  }
 
  ob = (Object *)ptr->owner_id;
 
  if (ob->type == OB_CURVES_LEGACY) {
    if (ob->pd->forcefield == PFIELD_VORTEX) {
      return curve_vortex_shape_items;
    }
 
    return curve_shape_items;
  }
  else if (ELEM(ob->type, OB_MESH, OB_SURF, OB_FONT)) {
    if (ob->pd->forcefield == PFIELD_VORTEX) {
      return vortex_shape_items;
    }
 
    return effector_shape_items;
  }
  else {
    if (ob->pd->forcefield == PFIELD_VORTEX) {
      return empty_vortex_shape_items;
    }
 
    return empty_shape_items;
  }
}
 
#else
 
static void rna_def_pointcache_common(StructRNA *srna)
{
  PropertyRNA *prop;
 
  RNA_def_struct_path_func(srna, "rna_PointCache_path");
 
  RNA_define_lib_overridable(true);
 
  prop = RNA_def_property(srna, "frame_start", PROP_INT, PROP_TIME);
  RNA_def_property_int_sdna(prop, nullptr, "startframe");
  RNA_def_property_range(prop, -MAXFRAME, MAXFRAME);
  RNA_def_property_ui_range(prop, 0, MAXFRAME, 1, 1);
  RNA_def_property_ui_text(prop, "Start", "Frame on which the simulation starts");
 
  prop = RNA_def_property(srna, "frame_end", PROP_INT, PROP_TIME);
  RNA_def_property_int_sdna(prop, nullptr, "endframe");
  RNA_def_property_range(prop, 1, MAXFRAME);
  RNA_def_property_ui_text(prop, "End", "Frame on which the simulation stops");
 
  prop = RNA_def_property(srna, "frame_step", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "step");
  RNA_def_property_range(prop, 1, 20);
  RNA_def_property_int_funcs(prop, nullptr, nullptr, "rna_PointCache_frame_step_range");
  RNA_def_property_ui_text(prop, "Cache Step", "Number of frames between cached frames");
  RNA_def_property_update(prop, NC_OBJECT, "rna_Cache_change");
 
  prop = RNA_def_property(srna, "index", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "index");
  RNA_def_property_range(prop, -1, 100);
  RNA_def_property_ui_text(prop, "Cache Index", "Index number of cache files");
  RNA_def_property_update(prop, NC_OBJECT, "rna_Cache_idname_change");
 
  /* flags */
  prop = RNA_def_property(srna, "is_baked", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PTCACHE_BAKED);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "", "The cache is baked");
 
  prop = RNA_def_property(srna, "is_baking", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PTCACHE_BAKING);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "", "The cache is being baked");
 
  prop = RNA_def_property(srna, "use_disk_cache", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PTCACHE_DISK_CACHE);
  RNA_def_property_ui_text(
      prop, "Disk Cache", "Save cache files to disk (.blend file must be saved first)");
  RNA_def_property_update(prop, NC_OBJECT, "rna_Cache_toggle_disk_cache");
  RNA_def_property_override_funcs(
      prop, nullptr, nullptr, "rna_Cache_use_disk_cache_override_apply");
 
  prop = RNA_def_property(srna, "is_outdated", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PTCACHE_OUTDATED);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "Cache Is Outdated", "");
 
  prop = RNA_def_property(srna, "is_frame_skip", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PTCACHE_FRAMES_SKIPPED);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "", "Some frames were skipped while baking/saving that cache");
 
  prop = RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, nullptr, "name");
  RNA_def_property_ui_text(prop, "Name", "Cache name");
  RNA_def_property_update(prop, NC_OBJECT, "rna_Cache_idname_change");
  RNA_def_struct_name_property(srna, prop);
 
  prop = RNA_def_property(srna, "filepath", PROP_STRING, PROP_DIRPATH);
  RNA_def_property_string_sdna(prop, nullptr, "path");
  RNA_def_property_flag(prop, PROP_PATH_SUPPORTS_BLEND_RELATIVE);
  RNA_def_property_ui_text(prop, "File Path", "Cache file path");
  RNA_def_property_update(prop, NC_OBJECT, "rna_Cache_idname_change");
 
  /* removed, see PTCACHE_QUICK_CACHE */
#  if 0
  prop = RNA_def_property(srna, "use_quick_cache", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PTCACHE_QUICK_CACHE);
  RNA_def_property_ui_text(prop, "Quick Cache", "Update simulation with cache steps");
  RNA_def_property_update(prop, NC_OBJECT, "rna_Cache_change");
#  endif
 
  prop = RNA_def_property(srna, "info", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, nullptr, "info");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_NO_COMPARISON);
  /* Note that we do not actually need a getter here, `rna_Cache_info_length` will update the info
   * string just as well. */
  RNA_def_property_string_funcs(prop, nullptr, "rna_Cache_info_length", nullptr);
  RNA_def_property_string_maxlength(prop, sizeof(PointCache::info) / sizeof(*PointCache::info));
  RNA_def_property_ui_text(prop, "Cache Info", "Info on current cache status");
 
  prop = RNA_def_property(srna, "use_external", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PTCACHE_EXTERNAL);
  RNA_def_property_ui_text(prop, "External", "Read cache from an external location");
  RNA_def_property_update(prop, NC_OBJECT, "rna_Cache_idname_change");
 
  prop = RNA_def_property(srna, "use_library_path", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_negative_sdna(prop, nullptr, "flag", PTCACHE_IGNORE_LIBPATH);
  RNA_def_property_ui_text(
      prop,
      "Library Path",
      "Use this file's path for the disk cache when library linked into another file "
      "(for local bakes per scene file, disable this option)");
  RNA_def_property_update(prop, NC_OBJECT, "rna_Cache_idname_change");
 
  RNA_define_lib_overridable(false);
}
 
static void rna_def_ptcache_point_caches(BlenderRNA *brna, PropertyRNA *cprop)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  // FunctionRNA *func;
  // PropertyRNA *parm;
 
  RNA_def_property_srna(cprop, "PointCaches");
  srna = RNA_def_struct(brna, "PointCaches", nullptr);
  RNA_def_struct_sdna(srna, "PointCache");
  RNA_def_struct_ui_text(srna, "Point Caches", "Collection of point caches");
 
  prop = RNA_def_property(srna, "active_index", PROP_INT, PROP_UNSIGNED);
  RNA_def_property_int_funcs(prop,
                             "rna_Cache_active_point_cache_index_get",
                             "rna_Cache_active_point_cache_index_set",
                             "rna_Cache_active_point_cache_index_range");
  RNA_def_property_ui_text(prop, "Active Point Cache Index", "");
  RNA_def_property_update(prop, NC_OBJECT, "rna_Cache_change");
 
  /* And define another RNA type for those collection items. */
  srna = RNA_def_struct(brna, "PointCacheItem", nullptr);
  RNA_def_struct_sdna(srna, "PointCache");
  RNA_def_struct_ui_text(srna, "Point Cache", "Point cache for physics simulations");
  RNA_def_struct_ui_icon(srna, ICON_PHYSICS);
 
  rna_def_pointcache_common(srna);
}
 
static void rna_def_pointcache_active(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  srna = RNA_def_struct(brna, "PointCache", nullptr);
  RNA_def_struct_ui_text(srna, "Active Point Cache", "Active point cache for physics simulations");
  RNA_def_struct_ui_icon(srna, ICON_PHYSICS);
 
  rna_def_pointcache_common(srna);
 
  /* This first-level RNA pointer also has list of all caches from owning ID.
   * Those caches items have exact same content as 'active' one, except for that collection,
   * to prevent ugly recursive layout pattern.
   *
   * NOTE: This shall probably be redone from scratch in a proper way at some point,
   *       but for now that will do, and shall not break anything in the API. */
  prop = RNA_def_property(srna, "point_caches", PROP_COLLECTION, PROP_NONE);
  RNA_def_property_collection_funcs(prop,
                                    "rna_Cache_list_begin",
                                    "rna_iterator_listbase_next",
                                    "rna_iterator_listbase_end",
                                    "rna_iterator_listbase_get",
                                    nullptr,
                                    nullptr,
                                    nullptr,
                                    nullptr);
  RNA_def_property_struct_type(prop, "PointCacheItem");
  RNA_def_property_ui_text(prop, "Point Cache List", "");
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  rna_def_ptcache_point_caches(brna, prop);
}
 
static void rna_def_collision(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  srna = RNA_def_struct(brna, "CollisionSettings", nullptr);
  RNA_def_struct_sdna(srna, "PartDeflect");
  RNA_def_struct_path_func(srna, "rna_CollisionSettings_path");
  RNA_def_struct_ui_text(
      srna, "Collision Settings", "Collision settings for object in physics simulation");
 
  RNA_define_lib_overridable(true);
 
  prop = RNA_def_property(srna, "use", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "deflect", 1);
  RNA_def_property_ui_text(
      prop, "Enabled", "Enable this object as a collider for physics systems");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_dependency_update");
 
  /* Particle Interaction */
 
  prop = RNA_def_property(srna, "damping_factor", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_damp");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(prop, "Damping Factor", "Amount of damping during particle collision");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "damping_random", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_rdamp");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(prop, "Random Damping", "Random variation of damping");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "friction_factor", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_frict");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(
      prop, "Friction Factor", "Amount of friction during particle collision");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "friction_random", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_rfrict");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(prop, "Random Friction", "Random variation of friction");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "permeability", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_perm");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(
      prop, "Permeability", "Chance that the particle will pass through the mesh");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "use_particle_kill", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PDEFLE_KILL_PART);
  RNA_def_property_ui_text(prop, "Kill Particles", "Kill collided particles");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "stickiness", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_stickness");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Stickiness", "Amount of stickiness to surface collision");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  /* Soft Body and Cloth Interaction */
 
  prop = RNA_def_property(srna, "thickness_inner", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_sbift");
  RNA_def_property_range(prop, 0.001f, 1.0f);
  RNA_def_property_ui_text(
      prop, "Inner Thickness", "Inner face thickness (only used by softbodies)");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "thickness_outer", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_sboft");
  RNA_def_property_range(prop, 0.001f, 1.0f);
  RNA_def_property_ui_text(prop, "Outer Thickness", "Outer face thickness");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "damping", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_sbdamp");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(prop, "Damping", "Amount of damping during collision");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "absorption", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 1, 2);
  RNA_def_property_ui_text(
      prop,
      "Absorption",
      "How much of effector force gets lost during collision with this object (in percent)");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "cloth_friction", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "pdef_cfrict");
  RNA_def_property_range(prop, 0.0f, 80.0f);
  RNA_def_property_ui_text(prop, "Friction", "Friction for cloth collisions");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "use_culling", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_CLOTH_USE_CULLING);
  RNA_def_property_ui_text(
      prop,
      "Single Sided",
      "Cloth collision acts with respect to the collider normals (improves penetration recovery)");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  prop = RNA_def_property(srna, "use_normal", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_CLOTH_USE_NORMAL);
  RNA_def_property_ui_text(prop,
                           "Override Normals",
                           "Cloth collision impulses act in the direction of the collider normals "
                           "(more reliable in some cases)");
  RNA_def_property_update(prop, 0, "rna_CollisionSettings_update");
 
  RNA_define_lib_overridable(false);
}
 
static void rna_def_effector_weight(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  srna = RNA_def_struct(brna, "EffectorWeights", nullptr);
  RNA_def_struct_sdna(srna, "EffectorWeights");
  RNA_def_struct_path_func(srna, "rna_EffectorWeight_path");
  RNA_def_struct_ui_text(srna, "Effector Weights", "Effector weights for physics simulation");
  RNA_def_struct_ui_icon(srna, ICON_PHYSICS);
 
  RNA_define_lib_overridable(true);
 
  /* Flags */
  prop = RNA_def_property(srna, "apply_to_hair_growing", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", EFF_WEIGHT_DO_HAIR);
  RNA_def_property_ui_text(prop, "Use For Growing Hair", "Use force fields when growing hair");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  /* General */
  prop = RNA_def_property(srna, "collection", PROP_POINTER, PROP_NONE);
  RNA_def_property_struct_type(prop, "Collection");
  RNA_def_property_pointer_sdna(prop, nullptr, "group");
  RNA_def_property_flag(prop, PROP_EDITABLE | PROP_ID_REFCOUNT);
  RNA_def_property_ui_text(prop, "Effector Collection", "Limit effectors to this collection");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_dependency_update");
 
  prop = RNA_def_property(srna, "gravity", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "global_gravity");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Gravity", "Global gravity weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  /* Effector weights */
  prop = RNA_def_property(srna, "all", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[0]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "All", "All effector's weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "force", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[1]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Force", "Force effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "vortex", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[2]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Vortex", "Vortex effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "magnetic", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[3]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Magnetic", "Magnetic effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "wind", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[4]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Wind", "Wind effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "curve_guide", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[5]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Curve Guide", "Curve guide effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "texture", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[6]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Texture", "Texture effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "harmonic", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[7]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Harmonic", "Harmonic effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "charge", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[8]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Charge", "Charge effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "lennardjones", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[9]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Lennard-Jones", "Lennard-Jones effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "boid", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[10]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Boid", "Boid effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "turbulence", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[11]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Turbulence", "Turbulence effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "drag", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[12]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Drag", "Drag effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  prop = RNA_def_property(srna, "smokeflow", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight[13]");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Fluid Flow", "Fluid Flow effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
 
  RNA_define_lib_overridable(false);
}
 
static void rna_def_field(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  static const EnumPropertyItem field_type_items[] = {
      {0, "NONE", ICON_BLANK1, "None", ""},
      {PFIELD_BOID,
       "BOID",
       ICON_FORCE_BOID,
       "Boid",
       "Create a force that acts as a boid's predators or target"},
      {PFIELD_CHARGE,
       "CHARGE",
       ICON_FORCE_CHARGE,
       "Charge",
       "Spherical forcefield based on the charge of particles, "
       "only influences other charge force fields"},
      {PFIELD_GUIDE,
       "GUIDE",
       ICON_FORCE_CURVE,
       "Curve Guide",
       "Create a force along a curve object"},
      {PFIELD_DRAG, "DRAG", ICON_FORCE_DRAG, "Drag", "Create a force that dampens motion"},
      {PFIELD_FLUIDFLOW,
       "FLUID_FLOW",
       ICON_FORCE_FLUIDFLOW,
       "Fluid Flow",
       "Create a force based on fluid simulation velocities"},
      {PFIELD_FORCE,
       "FORCE",
       ICON_FORCE_FORCE,
       "Force",
       "Radial field toward the center of object"},
      {PFIELD_HARMONIC,
       "HARMONIC",
       ICON_FORCE_HARMONIC,
       "Harmonic",
       "The source of this force field is the zero point of a harmonic oscillator"},
      {PFIELD_LENNARDJ,
       "LENNARDJ",
       ICON_FORCE_LENNARDJONES,
       "Lennard-Jones",
       "Forcefield based on the Lennard-Jones potential"},
      {PFIELD_MAGNET,
       "MAGNET",
       ICON_FORCE_MAGNETIC,
       "Magnetic",
       "Forcefield depends on the speed of the particles"},
      {PFIELD_TEXTURE, "TEXTURE", ICON_FORCE_TEXTURE, "Texture", "Force field based on a texture"},
      {PFIELD_TURBULENCE,
       "TURBULENCE",
       ICON_FORCE_TURBULENCE,
       "Turbulence",
       "Create turbulence with a noise field"},
      {PFIELD_VORTEX,
       "VORTEX",
       ICON_FORCE_VORTEX,
       "Vortex",
       "Spiraling force that twists the force object's local Z axis"},
      {PFIELD_WIND,
       "WIND",
       ICON_FORCE_WIND,
       "Wind",
       "Constant force along the force object's local Z axis"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem falloff_items[] = {
      {PFIELD_FALL_CONE, "CONE", 0, "Cone", ""},
      {PFIELD_FALL_SPHERE, "SPHERE", 0, "Sphere", ""},
      {PFIELD_FALL_TUBE, "TUBE", 0, "Tube", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem texture_items[] = {
      {PFIELD_TEX_CURL, "CURL", 0, "Curl", ""},
      {PFIELD_TEX_GRAD, "GRADIENT", 0, "Gradient", ""},
      {PFIELD_TEX_RGB, "RGB", 0, "RGB", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem zdirection_items[] = {
      {PFIELD_Z_POS, "POSITIVE", 0, "+Z", ""},
      {PFIELD_Z_NEG, "NEGATIVE", 0, "-Z", ""},
      {PFIELD_Z_BOTH, "BOTH", 0, "Both Z", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem guide_kink_items[] = {
      {0, "NONE", 0, "None", ""},
      {4, "BRAID", 0, "Braid", ""},
      {1, "CURL", 0, "Curl", ""},
      {2, "RADIAL", 0, "Radial", ""},
      {6, "ROLL", 0, "Roll", ""},
      {5, "ROTATION", 0, "Rotation", ""},
      {3, "WAVE", 0, "Wave", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  srna = RNA_def_struct(brna, "FieldSettings", nullptr);
  RNA_def_struct_sdna(srna, "PartDeflect");
  RNA_def_struct_path_func(srna, "rna_FieldSettings_path");
  RNA_def_struct_ui_text(
      srna, "Field Settings", "Field settings for an object in physics simulation");
  RNA_def_struct_ui_icon(srna, ICON_PHYSICS);
 
  RNA_define_lib_overridable(true);
 
  /* Enums */
 
  prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "forcefield");
  RNA_def_property_enum_items(prop, field_type_items);
  RNA_def_property_enum_funcs(prop, nullptr, "rna_FieldSettings_type_set", nullptr);
  RNA_def_property_ui_text(prop, "Type", "Type of field");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_dependency_update");
 
  prop = RNA_def_property(srna, "shape", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_items(prop, effector_shape_items);
  RNA_def_property_enum_funcs(prop, nullptr, nullptr, "rna_Effector_shape_itemf");
  RNA_def_property_ui_text(
      prop, "Shape", "Which direction is used to calculate the effector force");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_shape_update");
 
  prop = RNA_def_property(srna, "falloff_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "falloff");
  RNA_def_property_enum_items(prop, falloff_items);
  RNA_def_property_ui_text(prop, "Falloff", "");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "texture_mode", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "tex_mode");
  RNA_def_property_enum_items(prop, texture_items);
  RNA_def_property_ui_text(
      prop,
      "Texture Mode",
      "How the texture effect is calculated (RGB and Curl need a RGB texture, "
      "else Gradient will be used instead)");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "z_direction", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "zdir");
  RNA_def_property_enum_items(prop, zdirection_items);
  RNA_def_property_ui_text(
      prop, "Z Direction", "Effect in full or only positive/negative Z direction");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /* Float */
 
  prop = RNA_def_property(srna, "strength", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_strength");
  RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 10, 3);
  RNA_def_property_ui_text(prop, "Strength", "Strength of force field");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /* different ui range to above */
  prop = RNA_def_property(srna, "linear_drag", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_strength");
  RNA_def_property_ui_range(prop, -2.0f, 2.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Linear Drag", "Drag component proportional to velocity");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "harmonic_damping", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_damp");
  RNA_def_property_ui_range(prop, 0.0f, 10.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Harmonic Damping", "Damping of the harmonic force");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /* different ui range to above */
  prop = RNA_def_property(srna, "quadratic_drag", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_damp");
  RNA_def_property_ui_range(prop, -2.0f, 2.0f, 10, 3);
  RNA_def_property_ui_text(
      prop, "Quadratic Drag", "Drag component proportional to the square of velocity");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "flow", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_flow");
  RNA_def_property_ui_range(prop, 0.0f, 10.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Flow", "Convert effector force into air flow velocity");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "wind_factor", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "f_wind_factor");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(
      prop,
      "Wind Factor",
      "How much the force is reduced when acting parallel to a surface, e.g. cloth");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /* different ui range to above */
  prop = RNA_def_property(srna, "inflow", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_flow");
  RNA_def_property_ui_range(prop, -10.0f, 10.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Inflow", "Inwards component of the vortex force");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "size", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_size");
  RNA_def_property_range(prop, 0.0f, FLT_MAX);
  RNA_def_property_ui_range(prop, 0.0f, 10.0f, 1.0f, 3);
  RNA_def_property_ui_text(prop, "Size", "Size of the turbulence");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "rest_length", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_size");
  RNA_def_property_range(prop, 0.0f, FLT_MAX);
  RNA_def_property_ui_range(prop, 0.0f, 1000.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Rest Length", "Rest length of the harmonic force");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "falloff_power", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_power");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(
      prop, "Falloff Power", "How quickly strength falls off with distance from the force field");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "distance_min", PROP_FLOAT, PROP_DISTANCE);
  RNA_def_property_float_sdna(prop, nullptr, "mindist");
  RNA_def_property_range(prop, 0.0f, 1000.0f);
  RNA_def_property_ui_text(prop, "Minimum Distance", "Minimum distance for the field's falloff");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "distance_max", PROP_FLOAT, PROP_DISTANCE);
  RNA_def_property_float_sdna(prop, nullptr, "maxdist");
  RNA_def_property_range(prop, 0.0f, FLT_MAX);
  RNA_def_property_ui_range(prop, 0.0f, 1000.0f, 1.0f, 3);
  RNA_def_property_ui_text(prop, "Maximum Distance", "Maximum distance for the field to work");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "radial_min", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "minrad");
  RNA_def_property_range(prop, 0.0f, 1000.0f);
  RNA_def_property_ui_text(
      prop, "Minimum Radial Distance", "Minimum radial distance for the field's falloff");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "radial_max", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "maxrad");
  RNA_def_property_range(prop, 0.0f, 1000.0f);
  RNA_def_property_ui_text(
      prop, "Maximum Radial Distance", "Maximum radial distance for the field to work");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "radial_falloff", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_power_r");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(
      prop, "Radial Falloff Power", "Radial falloff power (real gravitational falloff = 2)");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "texture_nabla", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "tex_nabla");
  RNA_def_property_range(prop, 0.0001f, 1.0f);
  RNA_def_property_ui_text(
      prop, "Nabla", "Defines size of derivative offset used for calculating gradient and curl");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "noise", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_noise");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Noise", "Amount of noise for the force strength");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "seed", PROP_INT, PROP_UNSIGNED);
  RNA_def_property_range(prop, 1, 128);
  RNA_def_property_ui_text(prop, "Seed", "Seed of the noise");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /* Boolean */
 
  prop = RNA_def_property(srna, "use_min_distance", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_USEMIN);
  RNA_def_property_ui_text(prop, "Use Min", "Use a minimum distance for the field's falloff");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_max_distance", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_USEMAX);
  RNA_def_property_ui_text(prop, "Use Max", "Use a maximum distance for the field to work");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_radial_min", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_USEMINR);
  RNA_def_property_ui_text(
      prop, "Use Min", "Use a minimum radial distance for the field's falloff");
  /* "Use a minimum angle for the field's falloff" */
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_radial_max", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_USEMAXR);
  RNA_def_property_ui_text(prop, "Use Max", "Use a maximum radial distance for the field to work");
  /* "Use a maximum angle for the field to work" */
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_object_coords", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_TEX_OBJECT);
  RNA_def_property_ui_text(prop, "Use Coordinates", "Use object/global coordinates for texture");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_global_coords", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_GLOBAL_CO);
  RNA_def_property_ui_text(
      prop, "Use Global Coordinates", "Use effector/global coordinates for turbulence");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_2d_force", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_TEX_2D);
  RNA_def_property_ui_text(prop, "2D", "Apply force only in 2D");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_root_coords", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_TEX_ROOTCO);
  RNA_def_property_ui_text(
      prop, "Root Texture Coordinates", "Texture coordinates from root particle locations");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "apply_to_location", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_DO_LOCATION);
  RNA_def_property_ui_text(prop, "Location", "Affect particle's location");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "apply_to_rotation", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_DO_ROTATION);
  RNA_def_property_ui_text(prop, "Rotation", "Affect particle's dynamic rotation");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_absorption", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_VISIBILITY);
  RNA_def_property_ui_text(prop, "Absorption", "Force gets absorbed by collision objects");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_dependency_update");
 
  prop = RNA_def_property(srna, "use_multiple_springs", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_MULTIPLE_SPRINGS);
  RNA_def_property_ui_text(
      prop, "Multiple Springs", "Every point is affected by multiple springs");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_smoke_density", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_SMOKE_DENSITY);
  RNA_def_property_ui_text(prop, "Apply Density", "Adjust force strength based on smoke density");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
  prop = RNA_def_property(srna, "use_gravity_falloff", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_GRAVITATION);
  RNA_def_property_ui_text(prop, "Gravity Falloff", "Multiply force by 1/distance²");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /* Pointer */
 
  prop = RNA_def_property(srna, "texture", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "tex");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "Texture", "Texture to use as force");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "source_object", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "f_source");
  RNA_def_property_ui_text(prop, "Domain Object", "Select domain object of the smoke simulation");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /********** Curve Guide Field Settings **********/
 
  prop = RNA_def_property(srna, "guide_minimum", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "f_strength");
  RNA_def_property_ui_range(prop, 0.0f, 1000.0f, 10, 3);
  RNA_def_property_ui_text(
      prop, "Minimum Distance", "The distance from which particles are affected fully");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "guide_free", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "free_end");
  RNA_def_property_range(prop, 0.0f, 0.99f);
  RNA_def_property_ui_text(prop, "Free", "Guide-free time from particle life's end");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_guide_path_add", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_GUIDE_PATH_ADD);
  RNA_def_property_ui_text(
      prop, "Additive", "Based on distance/falloff it adds a portion of the entire path");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "use_guide_path_weight", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", PFIELD_GUIDE_PATH_WEIGHT);
  RNA_def_property_ui_text(
      prop, "Weights", "Use curve weights to influence the particle influence along the curve");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /* Clump Settings */
 
  prop = RNA_def_property(srna, "guide_clump_amount", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "clump_fac");
  RNA_def_property_range(prop, -1.0f, 1.0f);
  RNA_def_property_ui_text(prop, "Amount", "Amount of clumping");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "guide_clump_shape", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "clump_pow");
  RNA_def_property_range(prop, -0.999f, 0.999f);
  RNA_def_property_ui_text(prop, "Shape", "Shape of clumping");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /* Kink Settings */
 
  prop = RNA_def_property(srna, "guide_kink_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "kink");
  RNA_def_property_enum_items(prop, guide_kink_items);
  RNA_def_property_ui_text(prop, "Kink", "Type of periodic offset on the curve");
  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_PARTICLESETTINGS);
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "guide_kink_axis", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "kink_axis");
  RNA_def_property_enum_items(prop, rna_enum_axis_xyz_items);
  RNA_def_property_ui_text(prop, "Axis", "Which axis to use for offset");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "guide_kink_frequency", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "kink_freq");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Frequency", "The frequency of the offset (1/total length)");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "guide_kink_shape", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "kink_shape");
  RNA_def_property_range(prop, -0.999f, 0.999f);
  RNA_def_property_ui_text(prop, "Shape", "Adjust the offset to the beginning/end");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  prop = RNA_def_property(srna, "guide_kink_amplitude", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "kink_amp");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Amplitude", "The amplitude of the offset");
  RNA_def_property_update(prop, 0, "rna_FieldSettings_update");
 
  /* Variables used for Curve Guide, already wrapped, used for other fields too */
  /* falloff_power, use_max_distance, maximum_distance */
 
  RNA_define_lib_overridable(false);
}
 
static void rna_def_softbody(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  static const EnumPropertyItem collision_type_items[] = {
      {SBC_MODE_MANUAL, "MANUAL", 0, "Manual", "Manual adjust"},
      {SBC_MODE_AVG, "AVERAGE", 0, "Average", "Average Spring length * Ball Size"},
      {SBC_MODE_MIN, "MINIMAL", 0, "Minimal", "Minimal Spring length * Ball Size"},
      {SBC_MODE_MAX, "MAXIMAL", 0, "Maximal", "Maximal Spring length * Ball Size"},
      {SBC_MODE_AVGMINMAX, "MINMAX", 0, "AvMinMax", "(Min+Max)/2 * Ball Size"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem aerodynamics_type[] = {
      {0, "SIMPLE", 0, "Simple", "Edges receive a drag force from surrounding media"},
      {1,
       "LIFT_FORCE",
       0,
       "Lift Force",
       "Edges receive a lift force when passing through surrounding media"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  srna = RNA_def_struct(brna, "SoftBodySettings", nullptr);
  RNA_def_struct_sdna(srna, "SoftBody");
  RNA_def_struct_path_func(srna, "rna_SoftBodySettings_path");
  RNA_def_struct_ui_text(
      srna, "Soft Body Settings", "Soft body simulation settings for an object");
 
  /* General Settings */
 
  prop = RNA_def_property(srna, "friction", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "mediafrict");
  RNA_def_property_range(prop, 0.0f, 50.0f);
  RNA_def_property_ui_text(prop, "Friction", "General media friction for point movements");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "mass", PROP_FLOAT, PROP_UNIT_MASS);
  RNA_def_property_float_sdna(prop, nullptr, "nodemass");
  RNA_def_property_range(prop, 0.0f, 50000.0f);
  RNA_def_property_ui_text(prop, "Mass", "General Mass value");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "vertex_group_mass", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, nullptr, "namedVG_Mass");
  RNA_def_property_ui_text(prop, "Mass Vertex Group", "Control point mass values");
  RNA_def_property_string_funcs(prop, nullptr, nullptr, "rna_SoftBodySettings_mass_vgroup_set");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  /* no longer used */
  prop = RNA_def_property(srna, "gravity", PROP_FLOAT, PROP_ACCELERATION);
  RNA_def_property_float_sdna(prop, nullptr, "grav");
  RNA_def_property_range(prop, -10.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Gravitation", "Apply gravitation to point movement");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "speed", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "physics_speed");
  RNA_def_property_range(prop, 0.01f, 100.0f);
  RNA_def_property_ui_text(
      prop, "Speed", "Tweak timing for physics to control frequency and speed");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  /* Goal */
 
  prop = RNA_def_property(srna, "vertex_group_goal", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, nullptr, "vertgroup");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE); /* not impossible .. but not supported yet */
  RNA_def_property_string_funcs(prop,
                                "rna_SoftBodySettings_goal_vgroup_get",
                                "rna_SoftBodySettings_goal_vgroup_length",
                                "rna_SoftBodySettings_goal_vgroup_set");
  RNA_def_property_ui_text(prop, "Goal Vertex Group", "Control point weight values");
 
  prop = RNA_def_property(srna, "goal_min", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "mingoal");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(
      prop, "Goal Minimum", "Goal minimum, vertex weights are scaled to match this range");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "goal_max", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "maxgoal");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(
      prop, "Goal Maximum", "Goal maximum, vertex weights are scaled to match this range");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "goal_default", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "defgoal");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(prop, "Goal Default", "Default Goal (vertex target position) value");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "goal_spring", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "goalspring");
  RNA_def_property_range(prop, 0.0f, 0.999f);
  RNA_def_property_ui_text(
      prop, "Goal Stiffness", "Goal (vertex target position) spring stiffness");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "goal_friction", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "goalfrict");
  RNA_def_property_range(prop, 0.0f, 50.0f);
  RNA_def_property_ui_text(prop, "Goal Damping", "Goal (vertex target position) friction");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  /* Edge Spring Settings */
 
  prop = RNA_def_property(srna, "pull", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "inspring");
  RNA_def_property_range(prop, 0.0f, 0.999f);
  RNA_def_property_ui_text(prop, "Pull", "Edge spring stiffness when longer than rest length");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "push", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "inpush");
  RNA_def_property_range(prop, 0.0f, 0.999f);
  RNA_def_property_ui_text(prop, "Push", "Edge spring stiffness when shorter than rest length");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "damping", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "infrict");
  RNA_def_property_range(prop, 0.0f, 50.0f);
  RNA_def_property_ui_text(prop, "Damp", "Edge spring friction");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "spring_length", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "springpreload");
  RNA_def_property_range(prop, 0.0f, 200.0f);
  RNA_def_property_ui_text(
      prop, "Spring Length", "Alter spring length to shrink/blow up (unit %) 0 to disable");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "aero", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "aeroedge");
  RNA_def_property_range(prop, 0.0f, 30000.0f);
  RNA_def_property_ui_text(prop, "Aero", "Make edges 'sail'");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "plastic", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "plastic");
  RNA_def_property_range(prop, 0.0f, 100.0f);
  RNA_def_property_ui_text(prop, "Plasticity", "Permanent deform");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "bend", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "secondspring");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Bending", "Bending Stiffness");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "shear", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "shearstiff");
  RNA_def_property_range(prop, 0.0f, 1.0f);
  RNA_def_property_ui_text(prop, "Shear", "Shear Stiffness");
 
  prop = RNA_def_property(srna, "vertex_group_spring", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, nullptr, "namedVG_Spring_K");
  RNA_def_property_ui_text(prop, "Spring Vertex Group", "Control point spring strength values");
  RNA_def_property_string_funcs(prop, nullptr, nullptr, "rna_SoftBodySettings_spring_vgroup_set");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  /* Collision */
 
  prop = RNA_def_property(srna, "collision_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "sbc_mode");
  RNA_def_property_enum_items(prop, collision_type_items);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(prop, "Collision Type", "Choose Collision Type");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "ball_size", PROP_FLOAT, PROP_DISTANCE);
  RNA_def_property_float_sdna(prop, nullptr, "colball");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE); /* code is not ready for that yet */
  RNA_def_property_range(prop, -10.0f, 10.0f);
  RNA_def_property_ui_text(
      prop, "Ball Size", "Absolute ball size or factor if not manually adjusted");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "ball_stiff", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "ballstiff");
  RNA_def_property_range(prop, 0.001f, 100.0f);
  RNA_def_property_ui_text(prop, "Stiffness", "Ball inflating pressure");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "ball_damp", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "balldamp");
  RNA_def_property_range(prop, 0.001f, 1.0f);
  RNA_def_property_ui_text(prop, "Dampening", "Blending to inelastic collision");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  /* Solver */
 
  prop = RNA_def_property(srna, "error_threshold", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "rklimit");
  RNA_def_property_range(prop, 0.001f, 10.0f);
  RNA_def_property_ui_text(
      prop,
      "Error Limit",
      "The Runge-Kutta ODE solver error limit, low value gives more precision, "
      "high values speed");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "step_min", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "minloops");
  RNA_def_property_range(prop, 0, 30000);
  RNA_def_property_ui_text(prop, "Min Step", "Minimal # solver steps/frame");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "step_max", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "maxloops");
  RNA_def_property_range(prop, 0, 30000);
  RNA_def_property_ui_text(prop, "Max Step", "Maximal # solver steps/frame");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "choke", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "choke");
  RNA_def_property_range(prop, 0, 100);
  RNA_def_property_ui_text(prop, "Choke", "'Viscosity' inside collision target");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "fuzzy", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "fuzzyness");
  RNA_def_property_range(prop, 1, 100);
  RNA_def_property_ui_text(
      prop,
      "Fuzzy",
      "Fuzziness while on collision, high values make collision handling faster "
      "but less stable");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "use_auto_step", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "solverflags", SBSO_OLDERR);
  RNA_def_property_ui_text(prop, "V", "Use velocities for automagic step sizes");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "use_diagnose", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "solverflags", SBSO_MONITOR);
  RNA_def_property_ui_text(
      prop, "Print Performance to Console", "Turn on SB diagnose console prints");
 
  prop = RNA_def_property(srna, "use_estimate_matrix", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "solverflags", SBSO_ESTIMATEIPO);
  RNA_def_property_ui_text(
      prop, "Estimate Transforms", "Store the estimated transforms in the soft body settings");
 
  /***********************************************************************************/
  /* These are not exactly settings, but reading calculated results
   * but i did not want to start a new property struct
   * so rather rename this from SoftBodySettings to SoftBody
   * translation. */
  prop = RNA_def_property(srna, "location_mass_center", PROP_FLOAT, PROP_TRANSLATION);
  RNA_def_property_float_sdna(prop, nullptr, "lcom");
  RNA_def_property_ui_text(prop, "Center of Mass", "Location of center of mass");
  RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
 
  /* matrix */
  prop = RNA_def_property(srna, "rotation_estimate", PROP_FLOAT, PROP_MATRIX);
  RNA_def_property_float_sdna(prop, nullptr, "lrot");
  RNA_def_property_multi_array(prop, 2, rna_matrix_dimsize_3x3);
  RNA_def_property_ui_text(prop, "Rotation Matrix", "Estimated rotation matrix");
 
  prop = RNA_def_property(srna, "scale_estimate", PROP_FLOAT, PROP_MATRIX);
  RNA_def_property_float_sdna(prop, nullptr, "lscale");
  RNA_def_property_multi_array(prop, 2, rna_matrix_dimsize_3x3);
  RNA_def_property_ui_text(prop, "Scale Matrix", "Estimated scale matrix");
  /***********************************************************************************/
 
  /* Flags */
 
  prop = RNA_def_property(srna, "use_goal", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(
      prop, "rna_SoftBodySettings_use_goal_get", "rna_SoftBodySettings_use_goal_set");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(
      prop, "Use Goal", "Define forces for vertices to stick to animated position");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "use_edges", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(
      prop, "rna_SoftBodySettings_use_edges_get", "rna_SoftBodySettings_use_edges_set");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(prop, "Use Edges", "Use Edges as springs");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "use_stiff_quads", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(
      prop, "rna_SoftBodySettings_stiff_quads_get", "rna_SoftBodySettings_stiff_quads_set");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(prop, "Stiff Quads", "Add diagonal springs on 4-gons");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "use_edge_collision", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(
      prop, "rna_SoftBodySettings_edge_collision_get", "rna_SoftBodySettings_edge_collision_set");
  RNA_def_property_ui_text(prop, "Edge Collision", "Edges collide too");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "use_face_collision", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(
      prop, "rna_SoftBodySettings_face_collision_get", "rna_SoftBodySettings_face_collision_set");
  RNA_def_property_ui_text(prop, "Face Collision", "Faces collide too, can be very slow");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "aerodynamics_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_items(prop, aerodynamics_type);
  RNA_def_property_enum_funcs(
      prop, "rna_SoftBodySettings_new_aero_get", "rna_SoftBodySettings_new_aero_set", nullptr);
  RNA_def_property_ui_text(
      prop, "Aerodynamics Type", "Method of calculating aerodynamic interaction");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "use_self_collision", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(
      prop, "rna_SoftBodySettings_self_collision_get", "rna_SoftBodySettings_self_collision_set");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(prop, "Self Collision", "Enable naive vertex ball self collision");
  RNA_def_property_update(prop, 0, "rna_softbody_update");
 
  prop = RNA_def_property(srna, "collision_collection", PROP_POINTER, PROP_NONE);
  RNA_def_property_struct_type(prop, "Collection");
  RNA_def_property_pointer_sdna(prop, nullptr, "collision_group");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "Collision Collection", "Limit colliders to this collection");
  RNA_def_property_update(prop, 0, "rna_softbody_dependency_update");
 
  prop = RNA_def_property(srna, "effector_weights", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "effector_weights");
  RNA_def_property_struct_type(prop, "EffectorWeights");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_ui_text(prop, "Effector Weights", "");
}
 
void RNA_def_object_force(BlenderRNA *brna)
{
  rna_def_pointcache_active(brna);
  rna_def_collision(brna);
  rna_def_effector_weight(brna);
  rna_def_field(brna);
  rna_def_softbody(brna);
}
 
#endif