blender-archive/source/blender/makesrna/intern/rna_object_force.c

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

/** \file
 * \ingroup RNA
 */

#include <stdlib.h>

#include "DNA_cloth_types.h"
#include "DNA_object_types.h"
#include "DNA_object_force_types.h"
#include "DNA_particle_types.h"
#include "DNA_scene_types.h"
#include "DNA_smoke_types.h"

#include "RNA_define.h"
#include "RNA_enum_types.h"

#include "rna_internal.h"

#include "WM_api.h"
#include "WM_types.h"

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, NULL, 0, NULL, NULL},
};

#ifdef RNA_RUNTIME

#  include "BLI_math_base.h"

/* 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, NULL, 0, NULL, NULL},
};

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, NULL, 0, NULL, NULL},
};

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, NULL, 0, NULL, NULL},
};

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, NULL, 0, NULL, NULL},
};

static const EnumPropertyItem empty_vortex_shape_items[] = {
    {PFIELD_SHAPE_POINT, "POINT", 0, "Point", ""},
    {PFIELD_SHAPE_PLANE, "PLANE", 0, "Plane", ""},
    {0, NULL, 0, NULL, NULL},
};

#  include "MEM_guardedalloc.h"

#  include "DNA_modifier_types.h"
#  include "DNA_texture_types.h"

#  include "BKE_collection.h"
#  include "BKE_context.h"
#  include "BKE_modifier.h"
#  include "BKE_pointcache.h"

#  include "DEG_depsgraph.h"
#  include "DEG_depsgraph_build.h"

#  include "ED_object.h"

static bool rna_Cache_get_valid_owner_ID(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(!"Trying to get PTCacheID from an invalid ID type "
                  "(Only scenes and objects are supported).");
      break;
  }

  return (*ob != NULL || *scene != NULL);
}

static void rna_Cache_change(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
  Object *ob = NULL;
  Scene *scene = NULL;

  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 *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
  Object *ob = NULL;
  Scene *scene = NULL;

  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;
  }
}

static void rna_Cache_idname_change(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
  Object *ob = NULL;
  Scene *scene = NULL;

  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 = NULL, *pid2 = NULL;
    ListBase pidlist;

    BKE_ptcache_ids_from_object(&pidlist, ob, scene, 0);

    for (pid = 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 */
        BLI_strncpy(cache->name, cache->prev_name, sizeof(cache->name));
        use_new_name = false;
      }
    }

    if (use_new_name) {
      BLI_filename_make_safe(cache->name);

      if (pid2 && cache->flag & PTCACHE_DISK_CACHE) {
        char old_name[80];
        char new_name[80];

        BLI_strncpy(old_name, cache->prev_name, sizeof(old_name));
        BLI_strncpy(new_name, cache->name, sizeof(new_name));

        BKE_ptcache_disk_cache_rename(pid2, old_name, new_name);
      }

      BLI_strncpy(cache->prev_name, cache->name, sizeof(cache->prev_name));
    }

    BLI_freelistN(&pidlist);
  }
}

static void rna_Cache_list_begin(CollectionPropertyIterator *iter, PointerRNA *ptr)
{
  PointCache *cache = ptr->data;
  ListBase lb;

  while (cache->prev) {
    cache = cache->prev;
  }

  lb.first = cache;
  lb.last = NULL; /* not used by listbase_begin */

  rna_iterator_listbase_begin(iter, &lb, NULL);
}
static void rna_Cache_active_point_cache_index_range(
    PointerRNA *ptr, int *min, int *max, int *UNUSED(softmin), int *UNUSED(softmax))
{
  *min = 0;
  *max = 0;

  Object *ob = NULL;
  Scene *scene = NULL;

  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return;
  }

  PointCache *cache = 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 = NULL;
  Scene *scene = NULL;

  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return num;
  }

  PointCache *cache = 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(struct PointerRNA *ptr, int value)
{
  Object *ob = NULL;
  Scene *scene = NULL;

  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return;
  }

  PointCache *cache = ptr->data;
  PTCacheID pid = BKE_ptcache_id_find(ob, scene, cache);

  if (pid.cache) {
    *(pid.cache_ptr) = BLI_findlink(pid.ptcaches, value);
  }
}

static void rna_PointCache_frame_step_range(
    PointerRNA *ptr, int *min, int *max, int *UNUSED(softmin), int *UNUSED(softmax))
{
  *min = 1;
  *max = 20;

  Object *ob = NULL;
  Scene *scene = NULL;

  if (!rna_Cache_get_valid_owner_ID(ptr, &ob, &scene)) {
    return;
  }

  PointCache *cache = 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 = NULL;
  Scene *scene = NULL;

  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 (cache->flag & PTCACHE_FLAG_INFO_DIRTY) {
    BKE_ptcache_update_info(&pid);
  }

  return (int)strlen(cache->info);
}

static char *rna_CollisionSettings_path(PointerRNA *UNUSED(ptr))
{
  /* both methods work ok, but return the shorter path */
#  if 0
  Object *ob = (Object *)ptr->owner_id;
  ModifierData *md = (ModifierData *)modifiers_findByType(ob, eModifierType_Collision);

  if (md) {
    char name_esc[sizeof(md->name) * 2];

    BLI_strescape(name_esc, md->name, sizeof(name_esc));
    return BLI_sprintfN("modifiers[\"%s\"].settings", name_esc);
  }
  else {
    return BLI_strdup("");
  }
#  else
  /* more reliable */
  return BLI_strdup("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 char *rna_SoftBodySettings_path(PointerRNA *ptr)
{
  Object *ob = (Object *)ptr->owner_id;
  ModifierData *md = (ModifierData *)modifiers_findByType(ob, eModifierType_Softbody);
  char name_esc[sizeof(md->name) * 2];

  BLI_strescape(name_esc, md->name, sizeof(name_esc));
  return BLI_sprintfN("modifiers[\"%s\"].settings", name_esc);
}

static int particle_id_check(PointerRNA *ptr)
{
  ID *id = ptr->owner_id;

  return (GS(id->name) == ID_PA);
}

static void rna_FieldSettings_update(Main *UNUSED(bmain), Scene *UNUSED(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 = NULL;
    }

    if (part->pd2 && part->pd2->forcefield != PFIELD_TEXTURE && part->pd2->tex) {
      id_us_min(&part->pd2->tex->id);
      part->pd2->tex = NULL;
    }

    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, NULL);
  }
  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 = NULL;
    }

    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;
    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_CURVE && 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 char *rna_FieldSettings_path(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 BLI_strdup("force_field_1");
    }
    else if (part->pd2 == pd) {
      return BLI_strdup("force_field_2");
    }
  }
  else {
    /* object force field */
    Object *ob = (Object *)ptr->owner_id;

    if (ob->pd == pd) {
      return BLI_strdup("field");
    }
  }
  return NULL;
}

static void rna_EffectorWeight_update(Main *UNUSED(bmain), Scene *UNUSED(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, NULL);
  }
}

static void rna_EffectorWeight_dependency_update(Main *bmain,
                                                 Scene *UNUSED(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, NULL);
}

static char *rna_EffectorWeight_path(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 BLI_strdup("effector_weights");
    }
  }
  else {
    Object *ob = (Object *)ptr->owner_id;
    ModifierData *md;

    /* check softbody modifier */
    md = (ModifierData *)modifiers_findByType(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_strescape(name_esc, md->name, sizeof(name_esc));
        return BLI_sprintfN("modifiers[\"%s\"].settings.effector_weights", name_esc);
      }
    }

    /* check cloth modifier */
    md = (ModifierData *)modifiers_findByType(ob, eModifierType_Cloth);
    if (md) {
      ClothModifierData *cmd = (ClothModifierData *)md;
      if (cmd->sim_parms->effector_weights == ew) {
        char name_esc[sizeof(md->name) * 2];
        BLI_strescape(name_esc, md->name, sizeof(name_esc));
        return BLI_sprintfN("modifiers[\"%s\"].settings.effector_weights", name_esc);
      }
    }

    /* check smoke modifier */
    md = (ModifierData *)modifiers_findByType(ob, eModifierType_Smoke);
    if (md) {
      SmokeModifierData *smd = (SmokeModifierData *)md;
      if (smd->domain->effector_weights == ew) {
        char name_esc[sizeof(md->name) * 2];
        BLI_strescape(name_esc, md->name, sizeof(name_esc));
        return BLI_sprintfN("modifiers[\"%s\"].settings.effector_weights", name_esc);
      }
    }

    /* check dynamic paint modifier */
    md = (ModifierData *)modifiers_findByType(ob, eModifierType_DynamicPaint);
    if (md) {
      DynamicPaintModifierData *pmd = (DynamicPaintModifierData *)md;

      if (pmd->canvas) {
        DynamicPaintSurface *surface = 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_strescape(name_esc, md->name, sizeof(name_esc));
            BLI_strescape(name_esc_surface, surface->name, sizeof(name_esc_surface));
            return BLI_sprintfN(
                "modifiers[\"%s\"].canvas_settings.canvas_surfaces[\"%s\"]"
                ".effector_weights",
                name_esc,
                name_esc_surface);
          }
        }
      }
    }
  }
  return NULL;
}

static void rna_CollisionSettings_dependency_update(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Object *ob = (Object *)ptr->owner_id;
  ModifierData *md = modifiers_findByType(ob, eModifierType_Collision);

  /* add/remove modifier as needed */
  if (ob->pd->deflect && !md) {
    ED_object_modifier_add(NULL, bmain, scene, ob, NULL, eModifierType_Collision);
  }
  else if (!ob->pd->deflect && md) {
    ED_object_modifier_remove(NULL, bmain, ob, md);
  }

  WM_main_add_notifier(NC_OBJECT | ND_DRAW, ob);
}

static void rna_CollisionSettings_update(Main *UNUSED(bmain),
                                         Scene *UNUSED(scene),
                                         PointerRNA *ptr)
{
  Object *ob = (Object *)ptr->owner_id;

  DEG_id_tag_update(&ob->id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY | ID_RECALC_ANIMATION);
  WM_main_add_notifier(NC_OBJECT | ND_DRAW, ob);
}

static void rna_softbody_update(Main *UNUSED(bmain), Scene *UNUSED(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 *UNUSED(C),
                                                        PointerRNA *ptr,
                                                        PropertyRNA *UNUSED(prop),
                                                        bool *UNUSED(r_free))
{
  Object *ob = NULL;

  if (particle_id_check(ptr)) {
    return empty_shape_items;
  }

  ob = (Object *)ptr->owner_id;

  if (ob->type == OB_CURVE) {
    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;

  static const EnumPropertyItem point_cache_compress_items[] = {
      {PTCACHE_COMPRESS_NO, "NO", 0, "None", "No compression"},
      {PTCACHE_COMPRESS_LZO, "LIGHT", 0, "Lite", "Fast but not so effective compression"},
      {PTCACHE_COMPRESS_LZMA, "HEAVY", 0, "Heavy", "Effective but slow compression"},
      {0, NULL, 0, NULL, NULL},
  };

  prop = RNA_def_property(srna, "frame_start", PROP_INT, PROP_TIME);
  RNA_def_property_int_sdna(prop, NULL, "startframe");
  RNA_def_property_range(prop, -MAXFRAME, MAXFRAME);
  RNA_def_property_ui_range(prop, 1, 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, NULL, "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, NULL, "step");
  RNA_def_property_range(prop, 1, 20);
  RNA_def_property_int_funcs(prop, NULL, NULL, "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, NULL, "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");

  prop = RNA_def_property(srna, "compression", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_items(prop, point_cache_compress_items);
  RNA_def_property_ui_text(prop, "Cache Compression", "Compression method to be used");

  /* flags */
  prop = RNA_def_property(srna, "is_baked", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, NULL, "flag", PTCACHE_BAKED);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);

  prop = RNA_def_property(srna, "is_baking", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, NULL, "flag", PTCACHE_BAKING);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);

  prop = RNA_def_property(srna, "use_disk_cache", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, NULL, "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");

  prop = RNA_def_property(srna, "is_outdated", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, NULL, "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, NULL, "flag", PTCACHE_FRAMES_SKIPPED);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);

  prop = RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, NULL, "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, NULL, "path");
  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, NULL, "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, NULL, "info");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  /* 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, NULL, "rna_Cache_info_length", NULL);
  RNA_def_property_string_maxlength(
      prop, sizeof(((PointCache *)0)->info) / sizeof(*(((PointCache *)0)->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, NULL, "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, NULL, "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");
}

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", NULL);
  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", NULL);
  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", NULL);
  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",
                                    NULL,
                                    NULL,
                                    NULL,
                                    NULL);
  RNA_def_property_struct_type(prop, "PointCacheItem");
  RNA_def_property_ui_text(prop, "Point Cache List", "");
  rna_def_ptcache_point_caches(brna, prop);
}

static void rna_def_collision(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;

  srna = RNA_def_struct(brna, "CollisionSettings", NULL);
  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");

  prop = RNA_def_property(srna, "use", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, NULL, "deflect", 1);
  RNA_def_property_ui_text(
      prop, "Enabled", "Enable this objects 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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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");
}

static void rna_def_effector_weight(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;

  srna = RNA_def_struct(brna, "EffectorWeights", NULL);
  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);

  /* Flags */
  prop = RNA_def_property(srna, "apply_to_hair_growing", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, NULL, "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, NULL, "group");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, "Smoke Flow", "Smoke Flow effector weight");
  RNA_def_property_update(prop, 0, "rna_EffectorWeight_update");
}

static void rna_def_field(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;

  static const EnumPropertyItem field_type_items[] = {
      {0, "NONE", 0, "None", ""},
      {PFIELD_FORCE,
       "FORCE",
       ICON_FORCE_FORCE,
       "Force",
       "Radial field toward the center of object"},
      {PFIELD_WIND,
       "WIND",
       ICON_FORCE_WIND,
       "Wind",
       "Constant force along the force object's local Z axis"},
      {PFIELD_VORTEX,
       "VORTEX",
       ICON_FORCE_VORTEX,
       "Vortex",
       "Spiraling force that twists the force object's local Z axis"},
      {PFIELD_MAGNET,
       "MAGNET",
       ICON_FORCE_MAGNETIC,
       "Magnetic",
       "Forcefield depends on the speed of the particles"},
      {PFIELD_HARMONIC,
       "HARMONIC",
       ICON_FORCE_HARMONIC,
       "Harmonic",
       "The source of this force field is the zero point of a harmonic oscillator"},
      {PFIELD_CHARGE,
       "CHARGE",
       ICON_FORCE_CHARGE,
       "Charge",
       "Spherical forcefield based on the charge of particles, "
       "only influences other charge force fields"},
      {PFIELD_LENNARDJ,
       "LENNARDJ",
       ICON_FORCE_LENNARDJONES,
       "Lennard-Jones",
       "Forcefield based on the Lennard-Jones potential"},
      {PFIELD_TEXTURE, "TEXTURE", ICON_FORCE_TEXTURE, "Texture", "Forcefield based on a texture"},
      {PFIELD_GUIDE,
       "GUIDE",
       ICON_FORCE_CURVE,
       "Curve Guide",
       "Create a force along a curve object"},
      {PFIELD_BOID, "BOID", ICON_FORCE_BOID, "Boid", ""},
      {PFIELD_TURBULENCE,
       "TURBULENCE",
       ICON_FORCE_TURBULENCE,
       "Turbulence",
       "Create turbulence with a noise field"},
      {PFIELD_DRAG, "DRAG", ICON_FORCE_DRAG, "Drag", "Create a force that dampens motion"},
      {PFIELD_SMOKEFLOW,
       "SMOKE_FLOW",
       ICON_FORCE_SMOKEFLOW,
       "Smoke Flow",
       "Create a force based on smoke simulation air flow"},
      {0, NULL, 0, NULL, NULL},
  };

  static const EnumPropertyItem falloff_items[] = {
      {PFIELD_FALL_SPHERE, "SPHERE", 0, "Sphere", ""},
      {PFIELD_FALL_TUBE, "TUBE", 0, "Tube", ""},
      {PFIELD_FALL_CONE, "CONE", 0, "Cone", ""},
      {0, NULL, 0, NULL, NULL},
  };

  static const EnumPropertyItem texture_items[] = {
      {PFIELD_TEX_RGB, "RGB", 0, "RGB", ""},
      {PFIELD_TEX_GRAD, "GRADIENT", 0, "Gradient", ""},
      {PFIELD_TEX_CURL, "CURL", 0, "Curl", ""},
      {0, NULL, 0, NULL, NULL},
  };

  static const EnumPropertyItem zdirection_items[] = {
      {PFIELD_Z_BOTH, "BOTH", 0, "Both Z", ""},
      {PFIELD_Z_POS, "POSITIVE", 0, "+Z", ""},
      {PFIELD_Z_NEG, "NEGATIVE", 0, "-Z", ""},
      {0, NULL, 0, NULL, NULL},
  };

  static const EnumPropertyItem guide_kink_items[] = {
      {0, "NONE", 0, "Nothing", ""},
      {1, "CURL", 0, "Curl", ""},
      {2, "RADIAL", 0, "Radial", ""},
      {3, "WAVE", 0, "Wave", ""},
      {4, "BRAID", 0, "Braid", ""},
      {5, "ROTATION", 0, "Rotation", ""},
      {6, "ROLL", 0, "Roll", ""},
      {0, NULL, 0, NULL, NULL},
  };

  srna = RNA_def_struct(brna, "FieldSettings", NULL);
  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);

  /* Enums */

  prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, NULL, "forcefield");
  RNA_def_property_enum_items(prop, field_type_items);
  RNA_def_property_enum_funcs(prop, NULL, "rna_FieldSettings_type_set", NULL);
  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, NULL, NULL, "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, NULL, "falloff");
  RNA_def_property_enum_items(prop, falloff_items);
  RNA_def_property_ui_text(prop, "Fall-Off", "");
  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, NULL, "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 & 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, NULL, "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, NULL, "f_strength");
  RNA_def_property_range(prop, -FLT_MAX, FLT_MAX);
  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, NULL, "f_strength");
  RNA_def_property_range(prop, -2.0f, 2.0f);
  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, NULL, "f_damp");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  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, NULL, "f_damp");
  RNA_def_property_range(prop, -2.0f, 2.0f);
  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, NULL, "f_flow");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Flow", "Convert effector force into air flow velocity");
  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, NULL, "f_flow");
  RNA_def_property_range(prop, -10.0f, 10.0f);
  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, NULL, "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, NULL, "f_size");
  RNA_def_property_range(prop, 0.0f, 1000.0f);
  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, NULL, "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, NULL, "mindist");
  RNA_def_property_range(prop, 0.0f, 1000.0f);
  RNA_def_property_ui_text(prop, "Minimum Distance", "Minimum distance for the field's fall-off");
  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, NULL, "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, NULL, "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 fall-off");
  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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "flag", PFIELD_USEMIN);
  RNA_def_property_ui_text(prop, "Use Min", "Use a minimum distance for the field's fall-off");
  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, NULL, "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, NULL, "flag", PFIELD_USEMINR);
  RNA_def_property_ui_text(
      prop, "Use Min", "Use a minimum radial distance for the field's fall-off");
  /* "Use a minimum angle for the field's fall-off" */
  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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "flag", PFIELD_MULTIPLE_SPRINGS);
  RNA_def_property_ui_text(
      prop, "Multiple Springs", "Every point is effected 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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "f_strength");
  RNA_def_property_range(prop, 0.0f, 1000.0f);
  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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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_update(prop, 0, "rna_FieldSettings_update");

  prop = RNA_def_property(srna, "guide_kink_axis", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, NULL, "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, NULL, "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, NULL, "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, NULL, "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 */
}

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, NULL, 0, NULL, NULL},
  };

  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, NULL, 0, NULL, NULL},
  };

  srna = RNA_def_struct(brna, "SoftBodySettings", NULL);
  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, NULL, "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, NULL, "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, NULL, "namedVG_Mass");
  RNA_def_property_ui_text(prop, "Mass Vertex Group", "Control point mass values");
  RNA_def_property_string_funcs(prop, NULL, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "springpreload");
  RNA_def_property_range(prop, 0.0f, 200.0f);
  RNA_def_property_ui_text(
      prop, "View Layer", "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, NULL, "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, NULL, "plastic");
  RNA_def_property_range(prop, 0.0f, 100.0f);
  RNA_def_property_ui_text(prop, "Plastic", "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, NULL, "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, NULL, "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, NULL, "namedVG_Spring_K");
  RNA_def_property_ui_text(prop, "Spring Vertex Group", "Control point spring strength values");
  RNA_def_property_string_funcs(prop, NULL, NULL, "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, NULL, "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, NULL, "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, NULL, "ballstiff");
  RNA_def_property_range(prop, 0.001f, 100.0f);
  RNA_def_property_ui_text(prop, "Ball Size", "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, NULL, "balldamp");
  RNA_def_property_range(prop, 0.001f, 1.0f);
  RNA_def_property_ui_text(prop, "Ball Size", "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "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, NULL, "solverflags", SBSO_ESTIMATEIPO);
  RNA_def_property_ui_text(prop, "Estimate matrix", "Estimate matrix... split to COM, ROT, SCALE");

  /***********************************************************************************/
  /* 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, NULL, "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, NULL, "lrot");
  RNA_def_property_multi_array(prop, 2, rna_matrix_dimsize_3x3);
  RNA_def_property_ui_text(prop, "Rot Matrix", "Estimated rotation matrix");

  prop = RNA_def_property(srna, "scale_estimate", PROP_FLOAT, PROP_MATRIX);
  RNA_def_property_float_sdna(prop, NULL, "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", NULL);
  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, NULL, "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, NULL, "effector_weights");
  RNA_def_property_struct_type(prop, "EffectorWeights");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  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