First new particle code:

-Many things not yet working properly :)
-Experimental new (hopefully more logical) categorization of buttons, feedback on this is very welcome.
-Separate render & draw types, for example now there is actually a render option "halo" instead of all the different point draw types.
-Particles get recalculated only from buttons that actually change something that has to be recalculated, for example changing visualization doesn't reset particles any more.
-Boid physics buttons are still missing as I'm currently redoing the whole boids code.
-Point caching is still very wip, so baking is not possible for example, but I added a few cache baking flags for rna that were/will be needed for particle buttons logic.

2 files changed, 335 insertions, 52 deletions

diff --git a/source/blender/makesrna/intern/rna_object_force.c b/source/blender/makesrna/intern/rna_object_force.c
index d20552cbdb0..c3e1931c439 100644
--- a/source/blender/makesrna/intern/rna_object_force.c
+++ b/source/blender/makesrna/intern/rna_object_force.c
@@ -53,6 +53,13 @@ static void rna_def_pointcache(BlenderRNA *brna)
 	RNA_def_property_int_sdna(prop, NULL, "endframe");
 	RNA_def_property_range(prop, 1, 300000);
 	RNA_def_property_ui_text(prop, "End", "Frame on which the simulation stops.");
+
+	/* flags */
+	prop= RNA_def_property(srna, "baked", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", PTCACHE_BAKED);
+
+	prop= RNA_def_property(srna, "baking", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", PTCACHE_BAKING);
 }
 
 static void rna_def_collision(BlenderRNA *brna)
diff --git a/source/blender/makesrna/intern/rna_particle.c b/source/blender/makesrna/intern/rna_particle.c
index ee755fca27e..7c4f4eba27f 100644
--- a/source/blender/makesrna/intern/rna_particle.c
+++ b/source/blender/makesrna/intern/rna_particle.c
@@ -35,9 +35,59 @@
 #include "DNA_particle_types.h"
 #include "DNA_object_force.h"
 #include "DNA_object_types.h"
+#include "DNA_scene_types.h"
+
+#include "WM_types.h"
 
 #ifdef RNA_RUNTIME
 
+#include "BKE_context.h"
+#include "BKE_depsgraph.h"
+#include "BKE_particle.h"
+
+static void rna_Particle_redo(bContext *C, PointerRNA *ptr)
+{
+	ParticleSettings *part;
+	if(ptr->type==&RNA_ParticleSystem)
+		part = ((ParticleSystem*)ptr->data)->part;
+	else
+		part = ptr->id.data;
+
+	psys_flush_particle_settings(CTX_data_scene(C), part, PSYS_RECALC_REDO);
+}
+
+static void rna_Particle_reset(bContext *C, PointerRNA *ptr)
+{
+	ParticleSettings *part;
+	if(ptr->type==&RNA_ParticleSystem)
+		part = ((ParticleSystem*)ptr->data)->part;
+	else
+		part = ptr->id.data;
+
+	psys_flush_particle_settings(CTX_data_scene(C), part, PSYS_RECALC_RESET|PSYS_RECALC_REDO);
+}
+
+static void rna_Particle_change_type(bContext *C, PointerRNA *ptr)
+{
+	ParticleSettings *part;
+	if(ptr->type==&RNA_ParticleSystem)
+		part = ((ParticleSystem*)ptr->data)->part;
+	else
+		part = ptr->id.data;
+
+	psys_flush_particle_settings(CTX_data_scene(C), part, PSYS_RECALC_RESET|PSYS_RECALC_TYPE|PSYS_RECALC_REDO);
+}
+
+static void rna_Particle_redo_child(bContext *C, PointerRNA *ptr)
+{
+	ParticleSettings *part;
+	if(ptr->type==&RNA_ParticleSystem)
+		part = ((ParticleSystem*)ptr->data)->part;
+	else
+		part = ptr->id.data;
+
+	psys_flush_particle_settings(CTX_data_scene(C), part, PSYS_RECALC_CHILD);
+}
 static void rna_PartSettings_start_set(struct PointerRNA *ptr, float value)
 {
 	ParticleSettings *settings = (ParticleSettings*)ptr->data;
@@ -111,6 +161,88 @@ static void rna_ParticleSystem_name_get(PointerRNA *ptr, char *str)
 		strcat(str, psys->part->id.name+2);
 }
 
+static EnumPropertyItem from_items[] = {
+	{PART_FROM_VERT, "VERT", "Vertexes", ""},
+	{PART_FROM_FACE, "FACE", "Faces", ""},
+	{PART_FROM_VOLUME, "VOLUME", "Volume", ""},
+	{0, NULL, NULL, NULL}
+};
+
+static EnumPropertyItem reactor_from_items[] = {
+	{PART_FROM_VERT, "VERT", "Vertexes", ""},
+	{PART_FROM_FACE, "FACE", "Faces", ""},
+	{PART_FROM_VOLUME, "VOLUME", "Volume", ""},
+	{PART_FROM_PARTICLE, "PARTICLE", "Particle", ""},
+	{0, NULL, NULL, NULL}
+};
+
+static EnumPropertyItem *rna_Particle_from_itemf(PointerRNA *ptr)
+{
+	ParticleSettings *part = ptr->id.data;
+
+	if(part->type==PART_REACTOR)
+		return reactor_from_items;
+	else
+		return from_items;
+}
+
+static EnumPropertyItem draw_as_items[] = {
+	{PART_DRAW_NOT, "NONE", "None", ""},
+	{PART_DRAW_REND, "RENDER", "Rendered", ""},
+	{PART_DRAW_DOT, "DOT", "Point", ""},
+	{PART_DRAW_CIRC, "CIRC", "Circle", ""},
+	{PART_DRAW_CROSS, "CROSS", "Cross", ""},
+	{PART_DRAW_AXIS, "AXIS", "Axis", ""},
+	{0, NULL, NULL, NULL}
+};
+
+static EnumPropertyItem hair_draw_as_items[] = {
+	{PART_DRAW_NOT, "NONE", "None", ""},
+	{PART_DRAW_REND, "RENDER", "Rendered", ""},
+	{PART_DRAW_PATH, "PATH", "Path", ""},
+	{0, NULL, NULL, NULL}
+};
+
+static EnumPropertyItem ren_as_items[] = {
+	{PART_DRAW_NOT, "NONE", "None", ""},
+	{PART_DRAW_HALO, "HALO", "Halo", ""},
+	{PART_DRAW_LINE, "LINE", "Line", ""},
+	{PART_DRAW_PATH, "PATH", "Path", ""},
+	{PART_DRAW_OB, "OBJECT", "Object", ""},
+	{PART_DRAW_GR, "GROUP", "Group", ""},
+	{PART_DRAW_BB, "BILLBOARD", "Billboard", ""},
+	{0, NULL, NULL, NULL}
+};
+
+static EnumPropertyItem hair_ren_as_items[] = {
+	{PART_DRAW_NOT, "NONE", "None", ""},
+	{PART_DRAW_PATH, "PATH", "Path", ""},
+	{PART_DRAW_OB, "OBJECT", "Object", ""},
+	{PART_DRAW_GR, "GROUP", "Group", ""},
+	{0, NULL, NULL, NULL}
+};
+
+static EnumPropertyItem *rna_Particle_draw_as_itemf(PointerRNA *ptr)
+{
+	ParticleSettings *part = ptr->id.data;
+
+	if(part->type==PART_HAIR)
+		return hair_draw_as_items;
+	else
+		return draw_as_items;
+}
+
+static EnumPropertyItem *rna_Particle_ren_as_itemf(PointerRNA *ptr)
+{
+	ParticleSettings *part = ptr->id.data;
+
+	if(part->type==PART_HAIR)
+		return hair_ren_as_items;
+	else
+		return ren_as_items;
+}
+
+
 #else
 
 static void rna_def_particle_hair_key(BlenderRNA *brna)
@@ -326,16 +458,6 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 		{PART_EMITTER, "EMITTER", "Emitter", ""},
 		{PART_REACTOR, "REACTOR", "Reactor", ""},
 		{PART_HAIR, "HAIR", "Hair", ""},
-		{PART_FLUID, "FLUID", "Fluid", ""},
-		{0, NULL, NULL, NULL}
-	};
-
-	static EnumPropertyItem from_items[] = {
-		{PART_FROM_VERT, "VERT", "Vertexes", ""},
-		{PART_FROM_FACE, "FACE", "Faces", ""},
-		{PART_FROM_VOLUME, "VOLUME", "Volume", ""},
-		{PART_FROM_PARTICLE, "PARTICLE", "Particle", ""},
-		{PART_FROM_CHILD, "CHILD", "Child", ""},
 		{0, NULL, NULL, NULL}
 	};
 
@@ -347,7 +469,7 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	};
 
 	static EnumPropertyItem phys_type_items[] = {
-		{PART_PHYS_NO, "NO", "no", ""},
+		{PART_PHYS_NO, "NO", "No", ""},
 		{PART_PHYS_NEWTON, "NEWTON", "Newtonian", ""},
 		{PART_PHYS_KEYED, "KEYED", "Keyed", ""},
 		{PART_PHYS_BOIDS, "BOIDS", "Boids", ""},
@@ -381,20 +503,6 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 		{0, NULL, NULL, NULL}
 	};
 
-	static EnumPropertyItem draw_as_items[] = {
-		{PART_DRAW_NOT, "NONE", "None", ""},
-		{PART_DRAW_DOT, "DOT", "Point", ""},
-		{PART_DRAW_CIRC, "CIRC", "Circle", ""},
-		{PART_DRAW_CROSS, "CROSS", "Cross", ""},
-		{PART_DRAW_AXIS, "AXIS", "Axis", ""},
-		{PART_DRAW_LINE, "LINE", "Line", ""},
-		{PART_DRAW_PATH, "PATH", "Path", ""},
-		{PART_DRAW_OB, "OBJECT", "Object", ""},
-		{PART_DRAW_GR, "GROUP", "Group", ""},
-		{PART_DRAW_BB, "BILLBOARD", "Billboard", ""},
-		{0, NULL, NULL, NULL}
-	};
-
 	static EnumPropertyItem child_type_items[] = {
 		{0, "NONE", "None", ""},
 		{PART_CHILD_PARTICLES, "PARTICLES", "Particles", ""},
@@ -466,15 +574,19 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	prop= RNA_def_property(srna, "react_start_end", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_REACT_STA_END);
 	RNA_def_property_ui_text(prop, "Start/End", "Give birth to unreacted particles eventually.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "react_multiple", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_REACT_MULTIPLE);
 	RNA_def_property_ui_text(prop, "Multi React", "React multiple times.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "loop", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_LOOP);
 	RNA_def_property_ui_text(prop, "Loop", "Loop particle lives.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
+	/* TODO: used somewhere? */
 	prop= RNA_def_property(srna, "hair_geometry", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_HAIR_GEOMETRY);
 	RNA_def_property_ui_text(prop, "Hair Geometry", "");//TODO: tooltip
@@ -482,83 +594,104 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	prop= RNA_def_property(srna, "unborn", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_UNBORN);
 	RNA_def_property_ui_text(prop, "Unborn", "Show particles before they are emitted.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "died", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_DIED);
 	RNA_def_property_ui_text(prop, "Died", "Show particles after they have died");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "trand", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_TRAND);
 	RNA_def_property_ui_text(prop, "Random", "Emit in random order of elements");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "even_distribution", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_EDISTR);
 	RNA_def_property_ui_text(prop, "Even Distribution", "Use even distribution from faces based on face areas or edge lengths.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "sticky", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_STICKY);
 	RNA_def_property_ui_text(prop, "Sticky", "Particles stick to collided objects if they die in the collision.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "die_on_collision", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_DIE_ON_COL);
 	RNA_def_property_ui_text(prop, "Die on hit", "Particles die when they collide with a deflector object.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "size_deflect", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_SIZE_DEFL);
 	RNA_def_property_ui_text(prop, "Size Deflect", "Use particle's size in deflection.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "rotation_dynamic", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_ROT_DYN);
 	RNA_def_property_ui_text(prop, "Dynamic", "Sets rotation to dynamic/constant");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "sizemass", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_SIZEMASS);
 	RNA_def_property_ui_text(prop, "Mass from Size", "Multiply mass with particle size.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "abs_length", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_ABS_LENGTH);
 	RNA_def_property_ui_text(prop, "Abs Length", "Use maximum length for children");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "absolute_time", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_ABS_TIME);
 	RNA_def_property_ui_text(prop, "Absolute Time", "Set all ipos that work on particles to be calculated in absolute/relative time.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "global_time", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_GLOB_TIME);
 	RNA_def_property_ui_text(prop, "Global Time", "Set all ipos that work on particles to be calculated in global/object time.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "boids_2d", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_BOIDS_2D);
 	RNA_def_property_ui_text(prop, "Boids 2D", "Constrain boids to a surface");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "branching", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_BRANCHING);
 	RNA_def_property_ui_text(prop, "Branching", "Branch child paths from each other.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "animate_branching", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_ANIM_BRANCHING);
 	RNA_def_property_ui_text(prop, "Animated", "Animate branching");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "symmetric_branching", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_SYMM_BRANCHING);
 	RNA_def_property_ui_text(prop, "Symmetric", "Start and end points are the same.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "hair_bspline", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_HAIR_BSPLINE);
 	RNA_def_property_ui_text(prop, "B-Spline", "Interpolate hair using B-Splines.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "grid_invert", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_GRID_INVERT);
 	RNA_def_property_ui_text(prop, "Invert", "Invert what is considered object and what is not.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "child_effector", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_CHILD_EFFECT);
 	RNA_def_property_ui_text(prop, "Children", "Apply effectors to children.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "child_seams", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_CHILD_SEAMS);
 	RNA_def_property_ui_text(prop, "Use seams", "Use seams to determine parents");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
+	/* TODO: used somewhere? */
 	prop= RNA_def_property(srna, "child_render", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_CHILD_RENDER);
 	RNA_def_property_ui_text(prop, "child_render", "");
@@ -566,129 +699,164 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	prop= RNA_def_property(srna, "child_guide", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_CHILD_GUIDE);
 	RNA_def_property_ui_text(prop, "child_guide", "");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "self_effect", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PART_SELF_EFFECT);
 	RNA_def_property_ui_text(prop, "Self Effect", "Particle effectors effect themselves.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 
 	prop= RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_items(prop, type_items);
 	RNA_def_property_ui_text(prop, "Type", "");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_change_type");
 
 	prop= RNA_def_property(srna, "emit_from", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "from");
-	RNA_def_property_enum_items(prop, from_items);
+	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_Particle_from_itemf");
 	RNA_def_property_ui_text(prop, "Emit From", "Where to emit particles from");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "distribution", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "distr");
 	RNA_def_property_enum_items(prop, dist_items);
 	RNA_def_property_ui_text(prop, "Distribution", "How to distribute particles on selected element");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* physics modes */
 	prop= RNA_def_property(srna, "physics_type", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "phystype");
 	RNA_def_property_enum_items(prop, phys_type_items);
 	RNA_def_property_ui_text(prop, "Physics Type", "Particle physics type");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	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, rot_mode_items);
 	RNA_def_property_ui_text(prop, "Rotation", "Particles initial rotation");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "angular_velocity_mode", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "avemode");
 	RNA_def_property_enum_items(prop, ave_mode_items);
 	RNA_def_property_ui_text(prop, "Angular Velocity Mode", "Particle angular velocity mode.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "react_event", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "reactevent");
 	RNA_def_property_enum_items(prop, react_event_items);
 	RNA_def_property_ui_text(prop, "React On", "The event of target particles to react on.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/*draw flag*/
 	prop= RNA_def_property(srna, "velocity", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_VEL);
 	RNA_def_property_ui_text(prop, "Velocity", "Show particle velocity");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
-	/* used?
-	prop= RNA_def_property(srna, "angle", PROP_BOOLEAN, PROP_NONE);
-	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_ANG);
-	RNA_def_property_ui_text(prop, "Angle", "");
-	*/
+	//prop= RNA_def_property(srna, "draw_path_length", PROP_BOOLEAN, PROP_NONE);
+	//RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_PATH_LEN);
+	//RNA_def_property_ui_text(prop, "Path length", "Draw path length");
+	//RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "show_size", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_SIZE);
 	RNA_def_property_ui_text(prop, "Size", "Show particle size");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "emitter", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_EMITTER);
 	RNA_def_property_ui_text(prop, "Emitter", "Render emitter Object also.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
-	/* used?
-	prop= RNA_def_property(srna, "adapt", PROP_BOOLEAN, PROP_NONE);
-	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_ADAPT);
-	RNA_def_property_ui_text(prop, "adapt", "");
+	//prop= RNA_def_property(srna, "draw_health", PROP_BOOLEAN, PROP_NONE);
+	//RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_HEALTH);
+	//RNA_def_property_ui_text(prop, "Health", "Draw boid health");
+	//RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
-	prop= RNA_def_property(srna, "cos", PROP_BOOLEAN, PROP_NONE);
-	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_COS);
-	RNA_def_property_ui_text(prop, "cos", "");
-	*/
+	//prop= RNA_def_property(srna, "timed_path", PROP_BOOLEAN, PROP_NONE);
+	//RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_TIMED_PATH);
+	//RNA_def_property_ui_text(prop, "Clip with time", "Clip path based on time");
+	//RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
+
+	//prop= RNA_def_property(srna, "draw_cached_path", PROP_BOOLEAN, PROP_NONE);
+	//RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_CACHED_PATH);
+	//RNA_def_property_ui_text(prop, "Path", "Draw particle path if the path is baked");
+	//RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "billboard_lock", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_BB_LOCK);
 	RNA_def_property_ui_text(prop, "Lock Billboard", "Lock the billboards align axis");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "parent", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_PARENT);
 	RNA_def_property_ui_text(prop, "Parents", "Render parent particles.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "num", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_NUM);
 	RNA_def_property_ui_text(prop, "Number", "Show particle number");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "rand_group", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_RAND_GR);
 	RNA_def_property_ui_text(prop, "Pick Random", "Pick objects from group randomly");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "render_adaptive", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_REN_ADAPT);
 	RNA_def_property_ui_text(prop, "Adaptive render", "Draw steps of the particle path");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "velocity_length", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_VEL_LENGTH);
 	RNA_def_property_ui_text(prop, "Speed", "Multiply line length by particle speed");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "material_color", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_MAT_COL);
 	RNA_def_property_ui_text(prop, "Material Color", "Draw particles using material's diffuse color.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "whole_group", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_WHOLE_GR);
-	RNA_def_property_ui_text(prop, "Dupli Group", "Use whole group at once.");
+	RNA_def_property_ui_text(prop, "Whole Group", "Use whole group at once.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "render_strand", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "draw", PART_DRAW_REN_STRAND);
 	RNA_def_property_ui_text(prop, "Strand render", "Use the strand primitive for rendering");
-
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "draw_as", PROP_ENUM, PROP_NONE);
-	RNA_def_property_enum_items(prop, draw_as_items);
-	RNA_def_property_ui_text(prop, "Particle Visualization", "How particles are visualized");
+	RNA_def_property_enum_sdna(prop, NULL, "draw_as");
+	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_Particle_draw_as_itemf");
+	RNA_def_property_ui_text(prop, "Particle Drawing", "How particles are drawn in viewport");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
+
+	prop= RNA_def_property(srna, "ren_as", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "ren_as");
+	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_Particle_ren_as_itemf");
+	RNA_def_property_ui_text(prop, "Particle Rendering", "How particles are rendered");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "draw_size", PROP_INT, PROP_NONE);
 	RNA_def_property_range(prop, 0, 10);
 	RNA_def_property_ui_text(prop, "Draw Size", "Size of particles on viewport in pixels (0=default)");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "child_type", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "childtype");
 	RNA_def_property_enum_items(prop, child_type_items);
 	RNA_def_property_ui_text(prop, "Children From", "Create child particles");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "draw_step", PROP_INT, PROP_NONE);
 	RNA_def_property_range(prop, 0, 7);
 	RNA_def_property_ui_text(prop, "Steps", "How many steps paths are drawn with (power of 2)");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "render_step", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "ren_step");
@@ -697,7 +865,9 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 
 	prop= RNA_def_property(srna, "hair_step", PROP_INT, PROP_NONE);
 	RNA_def_property_range(prop, 2, 50);
-	RNA_def_property_ui_text(prop, "Segments", "Amount of hair segments");
+	RNA_def_property_ui_text(prop, "Segments", "Number of hair segments");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
+
 
 	//TODO: not found in UI, readonly?
 	prop= RNA_def_property(srna, "keys_step", PROP_INT, PROP_NONE);
@@ -719,11 +889,13 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	RNA_def_property_int_sdna(prop, NULL, "disp");
 	RNA_def_property_range(prop, 0, 100);
 	RNA_def_property_ui_text(prop, "Display", "Percentage of particles to display in 3d view");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "material", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "omat");
 	RNA_def_property_range(prop, 1, 16);
 	RNA_def_property_ui_text(prop, "Material", "Specify material used for the particles");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 
 	//interpolation
@@ -738,14 +910,17 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	prop= RNA_def_property(srna, "integrator", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_items(prop, integrator_type_items);
 	RNA_def_property_ui_text(prop, "Integration", "Select physics integrator type");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "kink", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_items(prop, kink_type_items);
 	RNA_def_property_ui_text(prop, "Kink", "Type of periodic offset on the path");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "kink_axis", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_items(prop, kink_axis_items);
 	RNA_def_property_ui_text(prop, "Axis", "Which axis to use for offset");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	/* used?
 	prop= RNA_def_property(srna, "inbetween", PROP_INT, PROP_NONE);
@@ -758,12 +933,14 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	RNA_def_property_int_sdna(prop, NULL, "boidneighbours");
 	RNA_def_property_range(prop, 1, 10);
 	RNA_def_property_ui_text(prop, "Neighbours", "How many neighbours to consider for each boid");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* billboards */
 	prop= RNA_def_property(srna, "billboard_align", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "bb_align");
 	RNA_def_property_enum_items(prop, bb_align_items);
 	RNA_def_property_ui_text(prop, "Align to", "In respect to what the billboards are aligned");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "billboard_uv_split", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "bb_uv_split");
@@ -784,17 +961,20 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	RNA_def_property_float_sdna(prop, NULL, "bb_tilt");
 	RNA_def_property_range(prop, -1.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Tilt", "Tilt of the billboards");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "billboard_random_tilt", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "bb_rand_tilt");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Random Tilt", "Random tilt of the billboards");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "billboard_offset", PROP_FLOAT, PROP_VECTOR);
 	RNA_def_property_float_sdna(prop, NULL, "bb_offset");
 	RNA_def_property_array(prop, 2);
 	RNA_def_property_range(prop, -1.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Billboard Offset", "");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	/* simplification */
 	prop= RNA_def_property(srna, "enable_simplify", PROP_BOOLEAN, PROP_NONE);
@@ -828,39 +1008,47 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	RNA_def_property_range(prop, -30000.0f, 30000.0f); //TODO: replace 30000 with MAXFRAMEF when available in 2.5
 	RNA_def_property_float_funcs(prop, NULL, "rna_PartSettings_start_set", NULL);
 	RNA_def_property_ui_text(prop, "Start", "Frame # to start emitting particles.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "end", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, -30000.0f, 30000.0f); //TODO: replace 30000 with MAXFRAMEF when available in 2.5
 	RNA_def_property_float_funcs(prop, NULL, "rna_PartSettings_end_set", NULL);
 	RNA_def_property_ui_text(prop, "End", "Frame # to stop emitting particles.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "lifetime", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, 1.0f, 30000.0f);
 	RNA_def_property_ui_text(prop, "Lifetime", "Specify the life span of the particles");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "random_lifetime", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "randlife");
-	RNA_def_property_range(prop, 0.0f, 2.0f);
+	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Random", "Give the particle life a random variation.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "time_tweak", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "timetweak");
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Tweak", "A multiplier for physics timestep (1.0 means one frame = 1/25 seconds)");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "jitter_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "jitfac");
 	RNA_def_property_range(prop, 0.0f, 2.0f);
 	RNA_def_property_ui_text(prop, "Amount", "Amount of jitter applied to the sampling.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "keyed_time", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Time", "Keyed key time relative to remaining particle life.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "effect_hair", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "eff_hair");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Stiffnes", "Hair stiffness for effectors");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	//float rt; TODO:find where rt is used - can't find it in UI
 
@@ -868,92 +1056,110 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	RNA_def_property_int_sdna(prop, NULL, "totpart");
 	RNA_def_property_range(prop, 0, 100000);
 	RNA_def_property_ui_text(prop, "Amount", "Total number of particles.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "userjit", PROP_INT, PROP_UNSIGNED);//TODO: can we get a better name for userjit?
 	RNA_def_property_int_sdna(prop, NULL, "userjit");
 	RNA_def_property_range(prop, 0, 1000);
 	RNA_def_property_ui_text(prop, "P/F", "Emission locations / face (0 = automatic).");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "grid_resolution", PROP_INT, PROP_UNSIGNED);
 	RNA_def_property_int_sdna(prop, NULL, "grid_res");
 	RNA_def_property_range(prop, 1, 100);
 	RNA_def_property_ui_text(prop, "Resolution", "The resolution of the particle grid.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* initial velocity factors */
 	prop= RNA_def_property(srna, "normal_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "normfac");//optional if prop names are the same
 	RNA_def_property_range(prop, -200.0f, 200.0f);
 	RNA_def_property_ui_text(prop, "Normal", "Let the surface normal give the particle a starting speed.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "object_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "obfac");
 	RNA_def_property_range(prop, -1.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Object", "Let the object give the particle a starting speed");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "random_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "randfac");//optional if prop names are the same
 	RNA_def_property_range(prop, 0.0f, 200.0f);
 	RNA_def_property_ui_text(prop, "Random", "Give the starting speed a random variation.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "particle_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "partfac");
 	RNA_def_property_range(prop, -10.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Particle", "Let the target particle give the particle a starting speed.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "tangent_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "tanfac");
 	RNA_def_property_range(prop, -200.0f, 200.0f);
 	RNA_def_property_ui_text(prop, "Tangent", "Let the surface tangent give the particle a starting speed.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "tangent_phase", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "tanphase");
 	RNA_def_property_range(prop, -1.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Rot", "Rotate the surface tangent.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "reactor_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "reactfac");
 	RNA_def_property_range(prop, -10.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Reactor", "Let the vector away from the target particles location give the particle a starting speed.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "angular_velocity_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "avefac");
 	RNA_def_property_range(prop, -200.0f, 200.0f);
 	RNA_def_property_ui_text(prop, "Angular Velocity", "Angular velocity amount");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "phase_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "phasefac");
 	RNA_def_property_range(prop, -1.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Phase", "Initial rotation phase");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "random_rotation_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "randrotfac");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Random Rotation", "Randomize rotation");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "random_phase_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "randphasefac");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Random Phase", "Randomize rotation phase");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* physical properties */
 	prop= RNA_def_property(srna, "mass", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, 0.01f, 100.0f);
 	RNA_def_property_ui_text(prop, "Mass", "Specify the mass of the particles");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "particle_size", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "size");
 	RNA_def_property_range(prop, 0.01f, 100.0f);
 	RNA_def_property_ui_text(prop, "Size", "The size of the particles");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "random_size", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "randsize");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Random Size", "Give the particle size a random variation");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "reaction_shape", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "reactshape");
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Shape", "Power of reaction strength dependence on distance to target.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 
 	/* global physical properties */
@@ -962,21 +1168,25 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	RNA_def_property_array(prop, 3);
 	RNA_def_property_range(prop, -200.0f, 200.0f);
 	RNA_def_property_ui_text(prop, "Accelaration", "Constant acceleration");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "drag_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "dragfac");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Drag", "Specify the amount of air-drag.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "brownian_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "brownfac");
 	RNA_def_property_range(prop, 0.0f, 200.0f);
 	RNA_def_property_ui_text(prop, "Brownian", "Specify the amount of brownian motion");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "damp_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "dampfac");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Damp", "Specify the amount of damping");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* length */
 	//TODO: is this readonly?
@@ -989,64 +1199,75 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	RNA_def_property_float_sdna(prop, NULL, "abslength");
 	RNA_def_property_range(prop, 0.0f, 10000.0f);
 	RNA_def_property_ui_text(prop, "Max Length", "Absolute maximum path length for children, in blender units.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "random_length", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "randlength");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Random Length", "Give path length a random variation.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	/* children */
-	prop= RNA_def_property(srna, "child_nbr", PROP_FLOAT, PROP_NONE);
-	RNA_def_property_float_sdna(prop, NULL, "child_nbr");//optional if prop names are the same
-	RNA_def_property_range(prop, 0.0f, MAX_PART_CHILDREN);
+	prop= RNA_def_property(srna, "child_nbr", PROP_INT, PROP_NONE);
+	RNA_def_property_int_sdna(prop, NULL, "child_nbr");//optional if prop names are the same
+	RNA_def_property_range(prop, 0, MAX_PART_CHILDREN);
 	RNA_def_property_ui_text(prop, "Children Per Parent", "Amount of children/parent");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
-	prop= RNA_def_property(srna, "rendered_child_nbr", PROP_FLOAT, PROP_NONE);
-	RNA_def_property_float_sdna(prop, NULL, "ren_child_nbr");
-	RNA_def_property_range(prop, 0.0f, MAX_PART_CHILDREN);
+	prop= RNA_def_property(srna, "rendered_child_nbr", PROP_INT, PROP_NONE);
+	RNA_def_property_int_sdna(prop, NULL, "ren_child_nbr");
+	RNA_def_property_range(prop, 0, MAX_PART_CHILDREN);
 	RNA_def_property_ui_text(prop, "Rendered Children", "Amount of children/parent for rendering.");
 
 	prop= RNA_def_property(srna, "virtual_parents", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "parents");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Virtual Parents", "Relative amount of virtual parents.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "child_size", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "childsize");
 	RNA_def_property_range(prop, 0.01f, 100.0f);
 	RNA_def_property_ui_text(prop, "Child Size", "A multiplier for the child particle size.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "child_random_size", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "childrandsize");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Random Child Size", "Random variation to the size of the child particles.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "child_radius", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "childrad");
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Child Radius", "Radius of children around parent.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "child_roundness", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "childflat");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Child Roundness", "Roundness of children around parent.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	//TODO: is this readonly?
 	prop= RNA_def_property(srna, "child_spread", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "childspread");
 //	RNA_def_property_range(prop, 0.0f, upperLimitf); TODO: limits
 	RNA_def_property_ui_text(prop, "Child Spread", "");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	/* clumping */
 	prop= RNA_def_property(srna, "clump_factor", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "clumpfac");
 	RNA_def_property_range(prop, -1.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Clump", "Amount of clumping");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "clumppow", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "clumppow");
 	RNA_def_property_range(prop, -0.999f, 0.999f);
 	RNA_def_property_ui_text(prop, "Shape", "Shape of clumping");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 
 	/* kink */
@@ -1054,101 +1275,121 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	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, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "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, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "kink_shape", PROP_FLOAT, PROP_NONE);
 	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, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 
 	/* rough */
 	prop= RNA_def_property(srna, "rough1", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Rough1", "Amount of location dependent rough.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "rough1_size", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, 0.01f, 10.0f);
 	RNA_def_property_ui_text(prop, "Size1", "Size of location dependent rough.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "rough2", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "rough2");
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Rough2", "Amount of random rough.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "rough2_size", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "rough2_size");
 	RNA_def_property_range(prop, 0.01f, 10.0f);
 	RNA_def_property_ui_text(prop, "Size2", "Size of random rough.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "rough2_thres", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "rough2_thres");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Threshold", "Amount of particles left untouched by random rough.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "rough_endpoint", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "rough_end");
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Rough Endpoint", "Amount of end point rough.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "rough_end_shape", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Shape", "Shape of end point rough");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	/* branching */
 	prop= RNA_def_property(srna, "branch_threshold", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "branch_thres");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Threshold", "Threshold of branching.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	/* drawing stuff */
 	prop= RNA_def_property(srna, "line_length_tail", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_funcs(prop, "rna_PartSetting_linelentail_get", "rna_PartSetting_linelentail_set", NULL);
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Back", "Length of the line's tail");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "line_length_head", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_funcs(prop, "rna_PartSetting_linelenhead_get", "rna_PartSetting_linelenhead_set", NULL);
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Head", "Length of the line's head");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	/* boids */
 	prop= RNA_def_property(srna, "max_velocity", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "max_vel");
 	RNA_def_property_range(prop, 0.0f, 200.0f);
 	RNA_def_property_ui_text(prop, "Maximum Velocity", "");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "lateral_acceleration_max", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "max_lat_acc");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Lateral Acceleration", "Lateral acceleration % of max velocity");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "tangential_acceleration_max", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "max_tan_acc");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Tangential acceleration", "Tangential acceleration % of max velocity");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "average_velocity", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "average_vel");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Average Velocity", "The usual speed % of max velocity");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "banking", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, -10.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Banking", "Banking of boids on turns (1.0==natural banking)");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "banking_max", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "max_bank");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Maximum Banking", "How much a boid can bank at a single step");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "ground_z", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "groundz");
 	RNA_def_property_range(prop, -100.0f, 100.0f);
 	RNA_def_property_ui_text(prop, "Ground Z", "Default Z value");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/*TODO: not sure how to deal with this
 	prop= RNA_def_property(srna, "boid_factor", PROP_FLOAT, PROP_VECTOR);
@@ -1163,24 +1404,28 @@ static void rna_def_particle_settings(BlenderRNA *brna)
 	RNA_def_property_struct_type(prop, "Group");
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Dupli Group", "Show Objects in this Group in place of particles");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "effector_group", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "eff_group");
 	RNA_def_property_struct_type(prop, "Group");
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Effector Group", "Limit effectors to this Group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "dupli_object", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "dup_ob");
 	RNA_def_property_struct_type(prop, "Object");
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Dupli Object", "Show this Object in place of particles.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "billboard_object", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "bb_ob");
 	RNA_def_property_struct_type(prop, "Object");
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Billboard Object", "Billboards face this object (default is active camera)");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 #if 0
 	prop= RNA_def_property(srna, "ipo", PROP_POINTER, PROP_NONE);
@@ -1225,6 +1470,7 @@ static void rna_def_particle_system(BlenderRNA *brna)
 
 	prop= RNA_def_property(srna, "seed", PROP_INT, PROP_UNSIGNED);
 	RNA_def_property_ui_text(prop, "Seed", "Offset in the random number table, to get a different randomized result.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* hair */
 	prop= RNA_def_property(srna, "softbody", PROP_POINTER, PROP_NONE);
@@ -1245,37 +1491,43 @@ static void rna_def_particle_system(BlenderRNA *brna)
 	RNA_def_property_pointer_sdna(prop, NULL, "target_ob");
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Reactor Target Object", "For reactor systems, the object that has the target particle system (empty if same object).");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "reactor_target_particle_system", PROP_INT, PROP_UNSIGNED);
 	RNA_def_property_int_sdna(prop, NULL, "target_psys");
 	RNA_def_property_range(prop, 1, INT_MAX);
 	RNA_def_property_ui_text(prop, "Reactor Target Particle System", "For reactor systems, index of particle system on the target object.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* boids */
 	prop= RNA_def_property(srna, "boids_surface_object", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "keyed_ob");
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Boids Surface Object", "For boids physics systems, constrain boids to this object's surface.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* keyed */
 	prop= RNA_def_property(srna, "keyed_object", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "keyed_ob");
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Keyed Object", "For keyed physics systems, the object that has the target particle system.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "keyed_particle_system", PROP_INT, PROP_UNSIGNED);
 	RNA_def_property_int_sdna(prop, NULL, "keyed_psys");
 	RNA_def_property_range(prop, 1, INT_MAX);
 	RNA_def_property_ui_text(prop, "Keyed Particle System", "For keyed physics systems, index of particle system on the keyed object.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "keyed_first", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PSYS_FIRST_KEYED);
 	RNA_def_property_ui_text(prop, "Keyed First", "Set the system to be the starting point of keyed particles");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "keyed_timed", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", PSYS_KEYED_TIME);
 	RNA_def_property_ui_text(prop, "Keyed Timed", "Use intermediate key times for keyed particles (setting for starting point only).");
-
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* billboard */
 	prop= RNA_def_property(srna, "billboard_normal_uv", PROP_STRING, PROP_NONE);
@@ -1297,98 +1549,122 @@ static void rna_def_particle_system(BlenderRNA *brna)
 	prop= RNA_def_property(srna, "vertex_group_density", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[0]");
 	RNA_def_property_ui_text(prop, "Vertex Group Density", "Vertex group to control density.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_density_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_DENSITY));
 	RNA_def_property_ui_text(prop, "Vertex Group Density Negate", "Negate the effect of the density vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_velocity", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[1]");
 	RNA_def_property_ui_text(prop, "Vertex Group Velocity", "Vertex group to control velocity.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_velocity_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_VEL));
 	RNA_def_property_ui_text(prop, "Vertex Group Velocity Negate", "Negate the effect of the velocity vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_length", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[2]");
 	RNA_def_property_ui_text(prop, "Vertex Group Length", "Vertex group to control length.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "vertex_group_length_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_LENGTH));
 	RNA_def_property_ui_text(prop, "Vertex Group Length Negate", "Negate the effect of the length vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo");
 
 	prop= RNA_def_property(srna, "vertex_group_clump", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[3]");
 	RNA_def_property_ui_text(prop, "Vertex Group Clump", "Vertex group to control clump.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_clump_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_CLUMP));
 	RNA_def_property_ui_text(prop, "Vertex Group Clump Negate", "Negate the effect of the clump vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_kink", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[4]");
 	RNA_def_property_ui_text(prop, "Vertex Group Kink", "Vertex group to control kink.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_kink_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_KINK));
 	RNA_def_property_ui_text(prop, "Vertex Group Kink Negate", "Negate the effect of the kink vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_roughness1", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[5]");
 	RNA_def_property_ui_text(prop, "Vertex Group Roughness 1", "Vertex group to control roughness 1.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_roughness1_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_ROUGH1));
 	RNA_def_property_ui_text(prop, "Vertex Group Roughness 1 Negate", "Negate the effect of the roughness 1 vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_roughness2", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[6]");
 	RNA_def_property_ui_text(prop, "Vertex Group Roughness 2", "Vertex group to control roughness 2.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_roughness2_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_ROUGH2));
 	RNA_def_property_ui_text(prop, "Vertex Group Roughness 2 Negate", "Negate the effect of the roughness 2 vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_roughness_end", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[7]");
 	RNA_def_property_ui_text(prop, "Vertex Group Roughness End", "Vertex group to control roughness end.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_roughness_end_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_ROUGHE));
 	RNA_def_property_ui_text(prop, "Vertex Group Roughness End Negate", "Negate the effect of the roughness end vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_redo_child");
 
 	prop= RNA_def_property(srna, "vertex_group_size", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[8]");
 	RNA_def_property_ui_text(prop, "Vertex Group Size", "Vertex group to control size.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_size_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_SIZE));
 	RNA_def_property_ui_text(prop, "Vertex Group Size Negate", "Negate the effect of the size vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_tangent", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[9]");
 	RNA_def_property_ui_text(prop, "Vertex Group Tangent", "Vertex group to control tangent.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_tangent_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_TAN));
 	RNA_def_property_ui_text(prop, "Vertex Group Tangent Negate", "Negate the effect of the tangent vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_rotation", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[10]");
 	RNA_def_property_ui_text(prop, "Vertex Group Rotation", "Vertex group to control rotation.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_rotation_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_ROT));
 	RNA_def_property_ui_text(prop, "Vertex Group Rotation Negate", "Negate the effect of the rotation vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_field", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "vgroup[11]");
 	RNA_def_property_ui_text(prop, "Vertex Group Field", "Vertex group to control field.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "vertex_group_field_negate", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "vg_neg", (1 << PSYS_VG_EFFECTOR));
 	RNA_def_property_ui_text(prop, "Vertex Group Field Negate", "Negate the effect of the field vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	/* pointcache */
 	prop= RNA_def_property(srna, "point_cache", PROP_POINTER, PROP_NEVER_NULL);