Setting object position is propagated to the physics simulation even for dynmamic objects.

The velocity is also reset to 0, which makes sense after forcing a dynamic object position.
Known issues:
- in interactive mode, changing an object position by rna causes a simulation step
- setting any part of the object position or orientation causes the full matrix to be applied to physics => missing true rigid body API

release/scripts/startup/bl_ui/space_time.py

@@ -38,6 +38,8 @@ class TIME_HT_editor_buttons(Header):
 
         layout.separator_spacer()
 
+        layout.prop(scene, "use_interactive_mode", text="", icon='GAME', toggle=True)
+
         layout.prop(toolsettings, "use_keyframe_insert_auto", text="", toggle=True)
 
         row = layout.row(align=True)

source/blender/blenkernel/intern/pointcache.c

@@ -1295,8 +1295,11 @@ static int  ptcache_rigidbody_write(int index, void *rb_v, void **data, int UNUS
 
 		if (rbo->type == RBO_TYPE_ACTIVE) {
 #ifdef WITH_BULLET
-			RB_body_get_position(rbo->shared->physics_object, rbo->pos);
-			RB_body_get_orientation(rbo->shared->physics_object, rbo->orn);
+			/* retrieving physics sim position should not be dependent on caching,
+			 * moved to rigidbody_update_simulation_post_step()
+			 */
+			/*RB_body_get_position(rbo->shared->physics_object, rbo->pos);*/
+			/*RB_body_get_orientation(rbo->shared->physics_object, rbo->orn);*/
 #endif
 			PTCACHE_DATA_FROM(data, BPHYS_DATA_LOCATION, rbo->pos);
 			PTCACHE_DATA_FROM(data, BPHYS_DATA_ROTATION, rbo->orn);

source/blender/blenkernel/intern/rigidbody.c

@@ -1313,13 +1313,13 @@ static void rigidbody_update_sim_ob(Depsgraph *depsgraph, Scene *scene, RigidBod
 		RB_shape_set_margin(rbo->shared->physics_shape, RBO_GET_MARGIN(rbo) * MIN3(scale[0], scale[1], scale[2]));
 
 	/* make transformed objects temporarily kinmatic so that they can be moved by the user during simulation */
-	if (ob->flag & SELECT && G.moving & G_TRANSFORM_OBJ) {
+	if ((ob->transflag & OB_PHYS_MOVING) || (ob->id.recalc & ID_RECALC_PHYS)) {
 		RB_body_set_kinematic_state(rbo->shared->physics_object, true);
 		RB_body_set_mass(rbo->shared->physics_object, 0.0f);
 	}
 
 	/* update rigid body location and rotation for kinematic bodies */
-	if (rbo->flag & RBO_FLAG_KINEMATIC || (ob->flag & SELECT && G.moving & G_TRANSFORM_OBJ)) {
+	if (rbo->flag & RBO_FLAG_KINEMATIC || (ob->transflag & OB_PHYS_MOVING) || (ob->id.recalc & ID_RECALC_PHYS)) {
 		RB_body_activate(rbo->shared->physics_object);
 		RB_body_set_loc_rot(rbo->shared->physics_object, loc, rot);
 	}
@@ -1484,19 +1484,26 @@ static void rigidbody_update_simulation(Depsgraph *depsgraph, Scene *scene, Rigi
 
 static void rigidbody_update_simulation_post_step(Depsgraph *depsgraph, RigidBodyWorld *rbw)
 {
-	ViewLayer *view_layer = DEG_get_input_view_layer(depsgraph);
+	static float null_vel[3] = {0.f, 0.f, 0.f};
 
 	FOREACH_COLLECTION_OBJECT_RECURSIVE_BEGIN(rbw->group, ob)
 	{
-		Base *base = BKE_view_layer_base_find(view_layer, ob);
 		RigidBodyOb *rbo = ob->rigidbody_object;
 		/* Reset kinematic state for transformed objects. */
-		if (rbo && base && (base->flag & BASE_SELECTED) && (G.moving & G_TRANSFORM_OBJ)) {
-			RB_body_set_kinematic_state(rbo->shared->physics_object, rbo->flag & RBO_FLAG_KINEMATIC || rbo->flag & RBO_FLAG_DISABLED);
-			RB_body_set_mass(rbo->shared->physics_object, RBO_GET_MASS(rbo));
-			/* Deactivate passive objects so they don't interfere with deactivation of active objects. */
-			if (rbo->type == RBO_TYPE_PASSIVE)
-				RB_body_deactivate(rbo->shared->physics_object);
+		if (rbo) {
+			if ((ob->transflag & OB_PHYS_MOVING) || (ob->id.recalc & ID_RECALC_PHYS)) {
+				RB_body_set_kinematic_state(rbo->shared->physics_object, rbo->flag & RBO_FLAG_KINEMATIC || rbo->flag & RBO_FLAG_DISABLED);
+				RB_body_set_mass(rbo->shared->physics_object, RBO_GET_MASS(rbo));
+				RB_body_set_linear_velocity(rbo->shared->physics_object, null_vel);
+				RB_body_set_angular_velocity(rbo->shared->physics_object, null_vel);
+				/* Deactivate passive objects so they don't interfere with deactivation of active objects. */
+				if (rbo->type == RBO_TYPE_PASSIVE)
+					RB_body_deactivate(rbo->shared->physics_object);
+			}
+			else if (rbo->type == RBO_TYPE_ACTIVE) {
+				RB_body_get_position(rbo->shared->physics_object, rbo->pos);
+				RB_body_get_orientation(rbo->shared->physics_object, rbo->orn);
+			}
 		}
 	}
 	FOREACH_COLLECTION_OBJECT_RECURSIVE_END;
@@ -1517,7 +1524,7 @@ void BKE_rigidbody_sync_transforms(RigidBodyWorld *rbw, Object *ob, float ctime)
 		return;
 
 	/* use rigid body transform after cache start frame if objects is not being transformed */
-	if (BKE_rigidbody_check_sim_running(rbw, ctime) && !(ob->flag & SELECT && G.moving & G_TRANSFORM_OBJ)) {
+	if (BKE_rigidbody_check_sim_running(rbw, ctime) && !(ob->transflag & OB_PHYS_MOVING) && !(ob->id.recalc & ID_RECALC_PHYS)) {
 		float mat[4][4], size_mat[4][4], size[3];
 
 		normalize_qt(rbo->orn); // RB_TODO investigate why quaternion isn't normalized at this point
@@ -1621,6 +1628,12 @@ void BKE_rigidbody_rebuild_world(Depsgraph *depsgraph, Scene *scene, float ctime
 	PTCacheID pid;
 	int startframe, endframe;
 
+	if (scene->flag & SCE_INTERACTIVE) {
+		if (rbw->shared->physics_world == NULL)
+			rigidbody_update_simulation(depsgraph, scene, rbw, true);
+		return;
+	}
+
 	BKE_ptcache_id_from_rigidbody(&pid, NULL, rbw);
 	BKE_ptcache_id_time(&pid, scene, ctime, &startframe, &endframe, NULL);
 	cache = rbw->shared->pointcache;
@@ -1658,6 +1671,24 @@ void BKE_rigidbody_do_simulation(Depsgraph *depsgraph, Scene *scene, float ctime
 	PTCacheID pid;
 	int startframe, endframe;
 
+	if (scene->flag & SCE_INTERACTIVE) {
+		/* No caching when in interactive mode */
+		if (rbw->shared->physics_world == NULL)
+			return;
+		else if (rbw->objects == NULL)
+			rigidbody_update_ob_array(rbw);
+
+		rigidbody_update_simulation(depsgraph, scene, rbw, false);
+
+		/* TODO: get the actual time difference from previous step so that the physics simulation is real time */
+		timestep = 1.0f / (float)FPS * rbw->time_scale;
+		/* step simulation by the requested timestep, steps per second are adjusted to take time scale into account */
+		RB_dworld_step_simulation(rbw->shared->physics_world, timestep, INT_MAX, 1.0f / (float)rbw->steps_per_second * min_ff(rbw->time_scale, 1.0f));
+
+		rigidbody_update_simulation_post_step(depsgraph, rbw);
+		return;
+	}
+
 	BKE_ptcache_id_from_rigidbody(&pid, NULL, rbw);
 	BKE_ptcache_id_time(&pid, scene, ctime, &startframe, &endframe, NULL);
 	cache = rbw->shared->pointcache;

source/blender/editors/screen/screen_ops.c

@@ -3882,6 +3882,7 @@ static int screen_animation_step(bContext *C, wmOperator *UNUSED(op), const wmEv
 		ScrArea *sa;
 		int sync;
 		float time;
+		int pfra = scene->r.cfra;
 
 		/* sync, don't sync, or follow scene setting */
 		if (sad->flag & ANIMPLAY_FLAG_SYNC) sync = 1;
@@ -3939,7 +3940,10 @@ static int screen_animation_step(bContext *C, wmOperator *UNUSED(op), const wmEv
 		/* reset 'jumped' flag before checking if we need to jump... */
 		sad->flag &= ~ANIMPLAY_FLAG_JUMPED;
 
-		if (sad->flag & ANIMPLAY_FLAG_REVERSE) {
+		if (scene->flag & SCE_INTERACTIVE) {
+			/* TODO: remember what was the frame increment so that it can be used in physics simulation to stick to real time */
+			scene->r.cfra = pfra;
+		} else if (sad->flag & ANIMPLAY_FLAG_REVERSE) {
 			/* jump back to end? */
 			if (PRVRANGEON) {
 				if (scene->r.cfra < scene->r.psfra) {

source/blender/editors/transform/transform_conversions.c

@@ -5650,7 +5650,8 @@ static void ObjectToTransData(TransInfo *t, TransData *td, Object *ob)
 
 		/* only use rigid body transform if simulation is running, avoids problems with initial setup of rigid bodies */
 		if (BKE_rigidbody_check_sim_running(scene->rigidbody_world, ctime)) {
-
+			/* remember that this object is moving to make it static in simulation */
+			ob->transflag |= OB_PHYS_MOVING;
 			/* save original object transform */
 			copy_v3_v3(td->ext->oloc, ob->loc);
 
@@ -6784,6 +6785,8 @@ void special_aftertrans_update(bContext *C, TransInfo *t)
 			ListBase pidlist;
 			PTCacheID *pid;
 			ob = td->ob;
+			/* reset this temp flag when the transformation ends */
+			ob->transflag &= ~OB_PHYS_MOVING;
 
 			if (td->flag & TD_NOACTION)
 				break;

source/blender/makesdna/DNA_ID.h

@@ -515,6 +515,8 @@ enum {
 	ID_RECALC_GEOMETRY    = 1 << 4,
 	ID_RECALC_TRANSFORM   = 1 << 5,
 	ID_RECALC_COPY_ON_WRITE = 1 << 6,
+	/* copy object matrix to physics simulation */
+	ID_RECALC_PHYS        = 1 << 7,
 	/* Special flag to check if SOMETHING was changed. */
 	ID_RECALC_ALL   = (~(int)0),
 };

source/blender/makesdna/DNA_object_types.h

@@ -419,6 +419,7 @@ enum {
 	OB_RENDER_DUPLI     = 1 << 12,
 	OB_NO_CONSTRAINTS   = 1 << 13,  /* runtime constraints disable */
 	OB_NO_PSYS_UPDATE   = 1 << 14,  /* hack to work around particle issue */
+	OB_PHYS_MOVING      = 1 << 15,  /* hack to set object static when moving by transform */
 
 	OB_DUPLI            = OB_DUPLIFRAMES | OB_DUPLIVERTS | OB_DUPLICOLLECTION | OB_DUPLIFACES | OB_DUPLIPARTS,
 };

source/blender/makesdna/DNA_scene_types.h

@@ -1936,6 +1936,7 @@ typedef enum eVGroupSelect {
 #define SCE_NLA_EDIT_ON			(1<<2)
 #define SCE_FRAME_DROP			(1<<3)
 #define SCE_KEYS_NO_SELONLY	    (1<<4)
+#define SCE_INTERACTIVE         (1<<5)
 
 	/* return flag BKE_scene_base_iter_next functions */
 /* #define F_ERROR			-1 */  /* UNUSED */

source/blender/makesrna/intern/rna_object.c

@@ -239,6 +239,13 @@ static void rna_Object_internal_update(Main *UNUSED(bmain), Scene *UNUSED(scene)
 	DEG_id_tag_update(ptr->id.data, OB_RECALC_OB);
 }
 
+static void rna_Object_internal_transform_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
+{
+	DEG_id_tag_update(ptr->id.data, OB_RECALC_OB);
+	/* propagate new object position to physics simulation */
+	((ID *)ptr->id.data)->recalc |= ID_RECALC_PHYS;
+}
+
 static void rna_Object_internal_update_draw(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
 {
 	DEG_id_tag_update(ptr->id.data, OB_RECALC_OB);
@@ -249,7 +256,7 @@ static void rna_Object_matrix_world_update(Main *bmain, Scene *scene, PointerRNA
 {
 	/* don't use compat so we get predictable rotation */
 	BKE_object_apply_mat4(ptr->id.data, ((Object *)ptr->id.data)->obmat, false, true);
-	rna_Object_internal_update(bmain, scene, ptr);
+	rna_Object_internal_transform_update(bmain, scene, ptr);
 }
 
 static void rna_Object_hide_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *ptr)
@@ -2251,7 +2258,7 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_STATIC);
 	RNA_def_property_ui_text(prop, "Location", "Location of the object");
 	RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	prop = RNA_def_property(srna, "rotation_quaternion", PROP_FLOAT, PROP_QUATERNION);
 	RNA_def_property_float_sdna(prop, NULL, "quat");
@@ -2259,7 +2266,7 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_STATIC);
 	RNA_def_property_float_array_default(prop, default_quat);
 	RNA_def_property_ui_text(prop, "Quaternion Rotation", "Rotation in Quaternions");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	/* XXX: for axis-angle, it would have been nice to have 2 separate fields for UI purposes, but
 	 * having a single one is better for Keyframing and other property-management situations...
@@ -2272,21 +2279,21 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_float_array_default(prop, default_axisAngle);
 	RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_STATIC);
 	RNA_def_property_ui_text(prop, "Axis-Angle Rotation", "Angle of Rotation for Axis-Angle rotation representation");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	prop = RNA_def_property(srna, "rotation_euler", PROP_FLOAT, PROP_EULER);
 	RNA_def_property_float_sdna(prop, NULL, "rot");
 	RNA_def_property_editable_array_func(prop, "rna_Object_rotation_euler_editable");
 	RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_STATIC);
 	RNA_def_property_ui_text(prop, "Euler Rotation", "Rotation in Eulers");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	prop = RNA_def_property(srna, "rotation_mode", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "rotmode");
 	RNA_def_property_enum_items(prop, prop_rotmode_items); /* XXX move to using a single define of this someday */
 	RNA_def_property_enum_funcs(prop, NULL, "rna_Object_rotation_mode_set", NULL);
 	RNA_def_property_ui_text(prop, "Rotation Mode", "");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	prop = RNA_def_property(srna, "scale", PROP_FLOAT, PROP_XYZ);
 	RNA_def_property_float_sdna(prop, NULL, "size");
@@ -2296,7 +2303,7 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, 3);
 	RNA_def_property_float_array_default(prop, default_scale);
 	RNA_def_property_ui_text(prop, "Scale", "Scaling of the object");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	prop = RNA_def_property(srna, "dimensions", PROP_FLOAT, PROP_XYZ_LENGTH);
 	RNA_def_property_array(prop, 3);
@@ -2305,7 +2312,7 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_float_funcs(prop, "rna_Object_dimensions_get", "rna_Object_dimensions_set", NULL);
 	RNA_def_property_ui_range(prop, 0.0f, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
 	RNA_def_property_ui_text(prop, "Dimensions", "Absolute bounding box dimensions of the object");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 
 	/* delta transforms */
@@ -2313,20 +2320,20 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_float_sdna(prop, NULL, "dloc");
 	RNA_def_property_ui_text(prop, "Delta Location", "Extra translation added to the location of the object");
 	RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	prop = RNA_def_property(srna, "delta_rotation_euler", PROP_FLOAT, PROP_EULER);
 	RNA_def_property_float_sdna(prop, NULL, "drot");
 	RNA_def_property_ui_text(prop, "Delta Rotation (Euler)",
 	                         "Extra rotation added to the rotation of the object (when using Euler rotations)");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	prop = RNA_def_property(srna, "delta_rotation_quaternion", PROP_FLOAT, PROP_QUATERNION);
 	RNA_def_property_float_sdna(prop, NULL, "dquat");
 	RNA_def_property_float_array_default(prop, default_quat);
 	RNA_def_property_ui_text(prop, "Delta Rotation (Quaternion)",
 	                         "Extra rotation added to the rotation of the object (when using Quaternion rotations)");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 #if 0 /* XXX not supported well yet... */
 	prop = RNA_def_property(srna, "delta_rotation_axis_angle", PROP_FLOAT, PROP_AXISANGLE);
@@ -2335,7 +2342,7 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_float_array_default(prop, default_axisAngle);
 	RNA_def_property_ui_text(prop, "Delta Rotation (Axis Angle)",
 	                         "Extra rotation added to the rotation of the object (when using Axis-Angle rotations)");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 #endif
 
 	prop = RNA_def_property(srna, "delta_scale", PROP_FLOAT, PROP_XYZ);
@@ -2344,7 +2351,7 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, 3);
 	RNA_def_property_float_array_default(prop, default_scale);
 	RNA_def_property_ui_text(prop, "Delta Scale", "Extra scaling added to the scale of the object");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	/* transform locks */
 	prop = RNA_def_property(srna, "lock_location", PROP_BOOLEAN, PROP_NONE);
@@ -2352,14 +2359,14 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_array(prop, 3);
 	RNA_def_property_ui_text(prop, "Lock Location", "Lock editing of location in the interface");
 	RNA_def_property_ui_icon(prop, ICON_UNLOCKED, 1);
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	prop = RNA_def_property(srna, "lock_rotation", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "protectflag", OB_LOCK_ROTX);
 	RNA_def_property_array(prop, 3);
 	RNA_def_property_ui_text(prop, "Lock Rotation", "Lock editing of rotation in the interface");
 	RNA_def_property_ui_icon(prop, ICON_UNLOCKED, 1);
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	/* XXX this is sub-optimal - it really should be included above,
 	 *     but due to technical reasons we can't do this! */
@@ -2379,7 +2386,7 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_array(prop, 3);
 	RNA_def_property_ui_text(prop, "Lock Scale", "Lock editing of scale in the interface");
 	RNA_def_property_ui_icon(prop, ICON_UNLOCKED, 1);
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	/* matrix */
 	prop = RNA_def_property(srna, "matrix_world", PROP_FLOAT, PROP_MATRIX);
@@ -2405,14 +2412,14 @@ static void rna_def_object(BlenderRNA *brna)
 	                         "Matrix access to location, rotation and scale (including deltas), "
 	                         "before constraints and parenting are applied");
 	RNA_def_property_float_funcs(prop, "rna_Object_matrix_basis_get", "rna_Object_matrix_basis_set", NULL);
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	/*parent_inverse*/
 	prop = RNA_def_property(srna, "matrix_parent_inverse", PROP_FLOAT, PROP_MATRIX);
 	RNA_def_property_float_sdna(prop, NULL, "parentinv");
 	RNA_def_property_multi_array(prop, 2, rna_matrix_dimsize_4x4);
 	RNA_def_property_ui_text(prop, "Matrix", "Inverse of object's parent matrix at time of parenting");
-	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_update");
+	RNA_def_property_update(prop, NC_OBJECT | ND_TRANSFORM, "rna_Object_internal_transform_update");
 
 	/* modifiers */
 	prop = RNA_def_property(srna, "modifiers", PROP_COLLECTION, PROP_NONE);

source/blender/makesrna/intern/rna_scene.c

@@ -6194,6 +6194,13 @@ void RNA_def_scene(BlenderRNA *brna)
 	                         "(in timeline and when jumping between keyframes)");
 	RNA_def_property_update(prop, NC_SCENE | ND_FRAME, NULL);
 
+	/* Timeline / Interactive mode */
+	prop = RNA_def_property(srna, "use_interactive_mode", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", SCE_INTERACTIVE);
+	RNA_def_property_ui_text(prop, "Run interactive mode for physics",
+	                         "The scene frame is no longer incrementing (and thus animation is stopped) but the physics engine still executes");
+	RNA_def_property_update(prop, NC_SCENE | ND_FRAME, NULL);
+
 	/* Stamp */
 	prop = RNA_def_property(srna, "use_stamp_note", PROP_STRING, PROP_NONE);
 	RNA_def_property_string_sdna(prop, NULL, "r.stamp_udata");