Particle ID block controls:

* Adding/removing particle systems to an object.
* Changing of particle settings.
* Currently showing an object's particle systems in a list (like materials).

10 files changed, 292 insertions, 34 deletions

diff --git a/release/ui/buttons_particle.py b/release/ui/buttons_particle.py
index 378689e8202..e51df6ef7fd 100644
--- a/release/ui/buttons_particle.py
+++ b/release/ui/buttons_particle.py
@@ -7,6 +7,7 @@ def particle_panel_enabled(psys):
 def particle_panel_poll(context):
 	psys = context.particle_system
 	if psys==None:	return False
+	if psys.settings==None:  return False
 	return psys.settings.type in ('EMITTER', 'REACTOR', 'HAIR')
 
 class ParticleButtonsPanel(bpy.types.Panel):
@@ -29,42 +30,51 @@ class PARTICLE_PT_particles(ParticleButtonsPanel):
 		ob = context.object
 		psys = context.particle_system
 
-		split = layout.split(percentage=0.65)
+		if ob:
+			row = layout.row()
 
-		if psys:
-			split.template_ID(psys, "settings")
+			row.template_list(ob, "particle_systems", "active_particle_system_index")
+
+			col = row.column(align=True)
+			col.itemO("OBJECT_OT_particle_system_slot_add", icon="ICON_ZOOMIN", text="")
+			col.itemO("OBJECT_OT_particle_system_slot_remove", icon="ICON_ZOOMOUT", text="")
 
 		if psys:
+			split = layout.split(percentage=0.65)
+			
+			split.template_ID(psys, "settings", new="PARTICLE_OT_new")
+			
 			#row = layout.row()
 			#row.itemL(text="Viewport")
 			#row.itemL(text="Render")
 			
 			part = psys.settings
-			ptype = psys.settings.type
 			
-			if ptype not in ('EMITTER', 'REACTOR', 'HAIR'):
-				layout.itemL(text="No settings for fluid particles")
-				return
+			if part:
+				ptype = psys.settings.type
+				if ptype not in ('EMITTER', 'REACTOR', 'HAIR'):
+					layout.itemL(text="No settings for fluid particles")
+					return
+					
+				split = layout.split(percentage=0.65)
 				
-			split = layout.split(percentage=0.65)
-			
-			split.enabled = particle_panel_enabled(psys)
-			split.itemR(part, "type")
-			split.itemR(psys, "seed")
-			
-			split = layout.split(percentage=0.65)
-			if part.type=='HAIR':
-				if psys.editable==True:
-					split.itemO("PARTICLE_OT_editable_set", text="Free Edit")
-				else:
-					split.itemO("PARTICLE_OT_editable_set", text="Make Editable")
-				row = split.row()
-				row.enabled = particle_panel_enabled(psys)
-				row.itemR(part, "hair_step")
-			elif part.type=='REACTOR':
 				split.enabled = particle_panel_enabled(psys)
-				split.itemR(psys, "reactor_target_object")
-				split.itemR(psys, "reactor_target_particle_system", text="Particle System")
+				split.itemR(part, "type")
+				split.itemR(psys, "seed")
+				
+				split = layout.split(percentage=0.65)
+				if part.type=='HAIR':
+					if psys.editable==True:
+						split.itemO("PARTICLE_OT_editable_set", text="Free Edit")
+					else:
+						split.itemO("PARTICLE_OT_editable_set", text="Make Editable")
+					row = split.row()
+					row.enabled = particle_panel_enabled(psys)
+					row.itemR(part, "hair_step")
+				elif part.type=='REACTOR':
+					split.enabled = particle_panel_enabled(psys)
+					split.itemR(psys, "reactor_target_object")
+					split.itemR(psys, "reactor_target_particle_system", text="Particle System")
 		
 class PARTICLE_PT_emission(ParticleButtonsPanel):
 	__idname__= "PARTICLE_PT_emission"
@@ -120,6 +130,7 @@ class PARTICLE_PT_cache(ParticleButtonsPanel):
 	def poll(self, context):
 		psys = context.particle_system
 		if psys==None:	return False
+		if psys.settings==None:  return False
 		return psys.settings.type in ('EMITTER', 'REACTOR')
 
 	def draw(self, context):
@@ -287,7 +298,10 @@ class PARTICLE_PT_render(ParticleButtonsPanel):
 	__label__ = "Render"
 	
 	def poll(self, context):
-		return (context.particle_system != None)
+		psys = context.particle_system
+		if psys==None: return False
+		if psys.settings==None: return False
+		return True;
 		
 	def draw(self, context):
 		layout = self.layout
@@ -421,7 +435,10 @@ class PARTICLE_PT_draw(ParticleButtonsPanel):
 	__default_closed__ = True
 	
 	def poll(self, context):
-		return (context.particle_system != None)
+		psys = context.particle_system
+		if psys==None: return False
+		if psys.settings==None: return False
+		return True;
 	
 	def draw(self, context):
 		layout = self.layout
diff --git a/source/blender/blenkernel/BKE_particle.h b/source/blender/blenkernel/BKE_particle.h
index 08aa111e0e6..4d9916b9557 100644
--- a/source/blender/blenkernel/BKE_particle.h
+++ b/source/blender/blenkernel/BKE_particle.h
@@ -217,6 +217,7 @@ char *psys_menu_string(struct Object *ob, int for_sb);
 
 struct ParticleSystem *psys_get_current(struct Object *ob);
 short psys_get_current_num(struct Object *ob);
+void psys_set_current_num(Object *ob, int index);
 struct Object *psys_find_object(struct Scene *scene, struct ParticleSystem *psys);
 //struct ParticleSystem *psys_get(struct Object *ob, int index);
 struct ParticleData *psys_get_selected_particle(struct ParticleSystem *psys, int *index);
@@ -250,6 +251,8 @@ void copy_particle_key(struct ParticleKey *to, struct ParticleKey *from, int tim
 void psys_particle_on_emitter(struct ParticleSystemModifierData *psmd, int distr, int index, int index_dmcache, float *fuv, float foffset, float *vec, float *nor, float *utan, float *vtan, float *orco, float *ornor);
 struct ParticleSystemModifierData *psys_get_modifier(struct Object *ob, struct ParticleSystem *psys);
 
+void object_add_particle_system_slot(struct Scene *scene, struct Object *ob);
+void object_remove_particle_system_slot(struct Scene *scene, struct Object *ob);
 struct ParticleSettings *psys_new_settings(char *name, struct Main *main);
 struct ParticleSettings *psys_copy_settings(struct ParticleSettings *part);
 void psys_flush_particle_settings(struct Scene *scene, struct ParticleSettings *part, int recalc);
diff --git a/source/blender/blenkernel/intern/depsgraph.c b/source/blender/blenkernel/intern/depsgraph.c
index b57b8b7a6da..a36b825293e 100644
--- a/source/blender/blenkernel/intern/depsgraph.c
+++ b/source/blender/blenkernel/intern/depsgraph.c
@@ -559,7 +559,7 @@ static void build_dag_object(DagForest *dag, DagNode *scenenode, Scene *scene, O
 
 			dag_add_relation(dag, node, node, DAG_RL_OB_DATA, "Particle-Object Relation");
 
-			if(psys->flag & PSYS_DISABLED || psys->flag & PSYS_DELETE)
+			if(!psys_check_enabled(ob, psys))
 				continue;
 
 			if(part->phystype==PART_PHYS_KEYED && psys->keyed_ob &&
diff --git a/source/blender/blenkernel/intern/modifier.c b/source/blender/blenkernel/intern/modifier.c
index 1a6f57e75c4..80a9f173d6a 100644
--- a/source/blender/blenkernel/intern/modifier.c
+++ b/source/blender/blenkernel/intern/modifier.c
@@ -6295,6 +6295,9 @@ CustomDataMask particleSystemModifier_requiredDataMask(Object *ob, ModifierData
 	MTex *mtex;
 	int i;
 
+	if(!psmd->psys->part)
+		return 0;
+
 	ma= give_current_material(ob, psmd->psys->part->omat);
 	if(ma) {
 		for(i=0; i<MAX_MTEX; i++) {
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c
index 04215b1ddd1..2474053298d 100644
--- a/source/blender/blenkernel/intern/particle.c
+++ b/source/blender/blenkernel/intern/particle.c
@@ -222,6 +222,20 @@ short psys_get_current_num(Object *ob)
 	
 	return i;
 }
+void psys_set_current_num(Object *ob, int index)
+{
+	ParticleSystem *psys;
+	short i;
+
+	if(ob==0) return;
+
+	for(psys=ob->particlesystem.first, i=0; psys; psys=psys->next, i++) {
+		if(i == index - 1)
+			psys->flag |= PSYS_CURRENT;
+		else
+			psys->flag &= ~PSYS_CURRENT;
+	}
+}
 Object *psys_find_object(Scene *scene, ParticleSystem *psys)
 {
 	Base *base = scene->base.first;
@@ -307,7 +321,7 @@ int psys_check_enabled(Object *ob, ParticleSystem *psys)
 	ParticleSystemModifierData *psmd;
 	Mesh *me;
 
-	if(psys->flag & PSYS_DISABLED || psys->flag & PSYS_DELETE)
+	if(psys->flag & PSYS_DISABLED || psys->flag & PSYS_DELETE || !psys->part)
 		return 0;
 
 	if(ob->type == OB_MESH) {
@@ -2915,6 +2929,61 @@ void psys_mat_hair_to_global(Object *ob, DerivedMesh *dm, short from, ParticleDa
 /************************************************/
 /*			ParticleSettings handling			*/
 /************************************************/
+void object_add_particle_system_slot(Scene *scene, Object *ob)
+{
+	ParticleSystem *psys;
+	ModifierData *md;
+	ParticleSystemModifierData *psmd;
+
+	if(!ob || ob->type != OB_MESH)
+		return;
+
+	psys = ob->particlesystem.first;
+	for(; psys; psys=psys->next)
+		psys->flag &= ~PSYS_CURRENT;
+
+	psys = MEM_callocN(sizeof(ParticleSystem), "particle_system");
+	psys->pointcache = BKE_ptcache_add();
+	BLI_addtail(&ob->particlesystem, psys);
+
+	psys->part = psys_new_settings("PSys", NULL);
+
+	md= modifier_new(eModifierType_ParticleSystem);
+	sprintf(md->name, "ParticleSystem %i", BLI_countlist(&ob->particlesystem));
+	psmd= (ParticleSystemModifierData*) md;
+	psmd->psys=psys;
+	BLI_addtail(&ob->modifiers, md);
+
+	psys->totpart=0;
+	psys->flag = PSYS_ENABLED|PSYS_CURRENT;
+	psys->cfra=bsystem_time(scene,ob,scene->r.cfra+1,0.0);
+
+	DAG_scene_sort(scene);
+	DAG_object_flush_update(scene, ob, OB_RECALC_DATA);
+}
+void object_remove_particle_system_slot(Scene *scene, Object *ob)
+{
+	ParticleSystem *psys = psys_get_current(ob);
+	ParticleSystemModifierData *psmd;
+
+	if(!psys)
+		return;
+
+	/* clear modifier */
+	psmd= psys_get_modifier(ob, psys);
+	BLI_remlink(&ob->modifiers, psmd);
+	modifier_free((ModifierData *)psmd);
+
+	/* clear particle system */
+	BLI_remlink(&ob->particlesystem, psys);
+	psys_free(ob,psys);
+
+	if(ob->particlesystem.first)
+		((ParticleSystem *) ob->particlesystem.first)->flag |= PSYS_CURRENT;
+
+	DAG_scene_sort(scene);
+	DAG_object_flush_update(scene, ob, OB_RECALC_DATA);
+}
 static void default_particle_settings(ParticleSettings *part)
 {
 	int i;
@@ -3001,6 +3070,9 @@ ParticleSettings *psys_new_settings(char *name, Main *main)
 {
 	ParticleSettings *part;
 
+	if(main==NULL)
+		main = G.main;
+
 	part= alloc_libblock(&main->particle, ID_PA, name);
 	
 	default_particle_settings(part);
diff --git a/source/blender/editors/space_buttons/buttons_intern.h b/source/blender/editors/space_buttons/buttons_intern.h
index b213e4288be..13ea778fb00 100644
--- a/source/blender/editors/space_buttons/buttons_intern.h
+++ b/source/blender/editors/space_buttons/buttons_intern.h
@@ -71,5 +71,10 @@ void MATERIAL_OT_new(struct wmOperatorType *ot);
 void TEXTURE_OT_new(struct wmOperatorType *ot);
 void WORLD_OT_new(struct wmOperatorType *ot);
 
+void OBJECT_OT_particle_system_slot_add(struct wmOperatorType *ot);
+void OBJECT_OT_particle_system_slot_remove(struct wmOperatorType *ot);
+
+void PARTICLE_OT_new(struct wmOperatorType *ot);
+
 #endif /* ED_BUTTONS_INTERN_H */
 
diff --git a/source/blender/editors/space_buttons/buttons_ops.c b/source/blender/editors/space_buttons/buttons_ops.c
index 6755a2be1b7..6ca92674c6e 100644
--- a/source/blender/editors/space_buttons/buttons_ops.c
+++ b/source/blender/editors/space_buttons/buttons_ops.c
@@ -42,6 +42,7 @@
 #include "BKE_font.h"
 #include "BKE_library.h"
 #include "BKE_material.h"
+#include "BKE_particle.h"
 #include "BKE_texture.h"
 #include "BKE_utildefines.h"
 #include "BKE_world.h"
@@ -407,3 +408,109 @@ void WORLD_OT_new(wmOperatorType *ot)
 	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
 }
 
+
+
+/********************** particle system slot operators *********************/
+
+static int particle_system_slot_add_exec(bContext *C, wmOperator *op)
+{
+	Object *ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
+	Scene *scene = CTX_data_scene(C);
+
+	if(!scene || !ob)
+		return OPERATOR_CANCELLED;
+
+	object_add_particle_system_slot(scene, ob);
+	WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, ob);
+	
+	return OPERATOR_FINISHED;
+}
+
+void OBJECT_OT_particle_system_slot_add(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name= "Add Particle System Slot";
+	ot->idname= "OBJECT_OT_particle_system_slot_add";
+	
+	/* api callbacks */
+	ot->exec= particle_system_slot_add_exec;
+
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
+}
+
+static int particle_system_slot_remove_exec(bContext *C, wmOperator *op)
+{
+	Object *ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
+	Scene *scene = CTX_data_scene(C);
+
+	if(!scene || !ob)
+		return OPERATOR_CANCELLED;
+
+	object_remove_particle_system_slot(scene, ob);
+	WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, ob);
+	
+	return OPERATOR_FINISHED;
+}
+
+void OBJECT_OT_particle_system_slot_remove(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name= "Remove Particle System Slot";
+	ot->idname= "OBJECT_OT_particle_system_slot_remove";
+	
+	/* api callbacks */
+	ot->exec= particle_system_slot_remove_exec;
+
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
+}
+
+/********************** new particle settings operator *********************/
+
+static int new_particle_settings_exec(bContext *C, wmOperator *op)
+{
+	Scene *scene = CTX_data_scene(C);
+	ParticleSettings *part= CTX_data_pointer_get_type(C, "particle_settings", &RNA_ParticleSettings).data;
+	Object *ob;
+	PointerRNA ptr;
+
+	/* add or copy particle setting */
+	if(part)
+		part= psys_copy_settings(part);
+	else
+		part= psys_new_settings("PSys", NULL);
+
+	/* attempt to assign to material slot */
+	ptr= CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
+
+	if(ptr.data) {
+		ParticleSystem *psys = (ParticleSystem*)ptr.data;
+		ob= ptr.id.data;
+
+		if(psys->part)
+			psys->part->id.us--;
+
+		psys->part = part;
+
+		DAG_scene_sort(scene);
+		DAG_object_flush_update(scene, ob, OB_RECALC_DATA);
+
+		WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, ob);
+	}
+	
+	return OPERATOR_FINISHED;
+}
+
+void PARTICLE_OT_new(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name= "New Particle Settings";
+	ot->idname= "PARTICLE_OT_new";
+	
+	/* api callbacks */
+	ot->exec= new_particle_settings_exec;
+
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
+}
diff --git a/source/blender/editors/space_buttons/space_buttons.c b/source/blender/editors/space_buttons/space_buttons.c
index 483a1dc6100..7954d5254cc 100644
--- a/source/blender/editors/space_buttons/space_buttons.c
+++ b/source/blender/editors/space_buttons/space_buttons.c
@@ -219,6 +219,11 @@ void buttons_operatortypes(void)
 	WM_operatortype_append(MATERIAL_OT_new);
 	WM_operatortype_append(TEXTURE_OT_new);
 	WM_operatortype_append(WORLD_OT_new);
+
+	WM_operatortype_append(OBJECT_OT_particle_system_slot_add);
+	WM_operatortype_append(OBJECT_OT_particle_system_slot_remove);
+
+	WM_operatortype_append(PARTICLE_OT_new);
 }
 
 void buttons_keymap(struct wmWindowManager *wm)
diff --git a/source/blender/makesrna/intern/rna_object.c b/source/blender/makesrna/intern/rna_object.c
index 5b553469bc8..9b3100c733b 100644
--- a/source/blender/makesrna/intern/rna_object.c
+++ b/source/blender/makesrna/intern/rna_object.c
@@ -241,6 +241,25 @@ static PointerRNA rna_Object_active_material_get(PointerRNA *ptr)
 	return rna_pointer_inherit_refine(ptr, &RNA_MaterialSlot, ob->mat+ob->actcol);
 }
 
+static void rna_Object_active_particle_system_index_range(PointerRNA *ptr, int *min, int *max)
+{
+	Object *ob= (Object*)ptr->id.data;
+	*min= 1;
+	*max= BLI_countlist(&ob->particlesystem);
+}
+
+static int rna_Object_active_particle_system_index_get(PointerRNA *ptr)
+{
+	Object *ob= (Object*)ptr->id.data;
+	return psys_get_current_num(ob) + 1;
+}
+
+static void rna_Object_active_particle_system_index_set(struct PointerRNA *ptr, int value)
+{
+	Object *ob= (Object*)ptr->id.data;
+	psys_set_current_num(ob, value);
+}
+
 #if 0
 static void rna_Object_active_material_set(PointerRNA *ptr, PointerRNA value)
 {
@@ -929,6 +948,10 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_pointer_funcs(prop, "rna_Object_active_particle_system_get", NULL, NULL);
 	RNA_def_property_ui_text(prop, "Active Particle System", "Active particle system being displayed");
 
+	prop= RNA_def_property(srna, "active_particle_system_index", PROP_INT, PROP_UNSIGNED);
+	RNA_def_property_int_funcs(prop, "rna_Object_active_particle_system_index_get", "rna_Object_active_particle_system_index_set", "rna_Object_active_particle_system_index_range");
+	RNA_def_property_ui_text(prop, "Active Particle System Index", "Index of active particle system slot.");
+
 	/* restrict */
 
 	prop= RNA_def_property(srna, "restrict_view", PROP_BOOLEAN, PROP_NONE);
diff --git a/source/blender/makesrna/intern/rna_particle.c b/source/blender/makesrna/intern/rna_particle.c
index ae53c815ed9..d60a215b498 100644
--- a/source/blender/makesrna/intern/rna_particle.c
+++ b/source/blender/makesrna/intern/rna_particle.c
@@ -81,13 +81,11 @@ static void rna_Particle_reset(bContext *C, PointerRNA *ptr)
 
 		if(ob) {
 			DAG_object_flush_update(scene, ob, OB_RECALC_DATA);
-			//WM_event_add_notifier(C, NC_SCENE|ND_CACHE_PHYSICS, scene);
 		}
 	}
 	else {
 		part = ptr->id.data;
 		psys_flush_particle_settings(scene, part, PSYS_RECALC_RESET);
-		//WM_event_add_notifier(C, NC_SCENE|ND_CACHE_PHYSICS, scene);
 	}
 }
 
@@ -104,13 +102,11 @@ static void rna_Particle_change_type(bContext *C, PointerRNA *ptr)
 
 		if(ob) {
 			DAG_object_flush_update(scene, ob, OB_RECALC_DATA);
-			//WM_event_add_notifier(C, NC_SCENE|ND_CACHE_PHYSICS, scene);
 		}
 	}
 	else {
 		part = ptr->id.data;
 		psys_flush_particle_settings(scene, part, PSYS_RECALC_RESET|PSYS_RECALC_TYPE);
-		//WM_event_add_notifier(C, NC_SCENE|ND_CACHE_PHYSICS, scene);
 	}
 }
 
@@ -134,6 +130,27 @@ static void rna_Particle_redo_child(bContext *C, PointerRNA *ptr)
 		psys_flush_particle_settings(scene, part, PSYS_RECALC_CHILD);
 	}
 }
+static PointerRNA rna_particle_settings_get(PointerRNA *ptr)
+{
+	Object *ob= (Object*)ptr->id.data;
+	ParticleSettings *part = psys_get_current(ob)->part;
+
+	return rna_pointer_inherit_refine(ptr, &RNA_ParticleSettings, part);
+}
+
+static void rna_particle_settings_set(PointerRNA *ptr, PointerRNA value)
+{
+	Object *ob= (Object*)ptr->id.data;
+	ParticleSystem *psys = psys_get_current(ob);
+
+	if(psys->part)
+		psys->part->id.us--;
+
+	psys->part = (ParticleSettings *)value.data;
+
+	if(psys->part)
+		psys->part->id.us++;
+}
 static void rna_PartSettings_start_set(struct PointerRNA *ptr, float value)
 {
 	ParticleSettings *settings = (ParticleSettings*)ptr->data;
@@ -1493,9 +1510,15 @@ static void rna_def_particle_system(BlenderRNA *brna)
 	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 	RNA_def_struct_name_property(srna, prop);
 
+	/* access to particle settings is redirected through functions */
+	/* to allow proper id-buttons functionality */
 	prop= RNA_def_property(srna, "settings", PROP_POINTER, PROP_NEVER_NULL);
-	RNA_def_property_pointer_sdna(prop, NULL, "part");
+	//RNA_def_property_pointer_sdna(prop, NULL, "part");
+	RNA_def_property_struct_type(prop, "ParticleSettings");
+	RNA_def_property_flag(prop, PROP_EDITABLE);
+	RNA_def_property_pointer_funcs(prop, "rna_particle_settings_get", "rna_particle_settings_set", NULL);
 	RNA_def_property_ui_text(prop, "Settings", "Particle system settings.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE, "rna_Particle_reset");
 
 	prop= RNA_def_property(srna, "particles", PROP_COLLECTION, PROP_NONE);
 	RNA_def_property_collection_sdna(prop, NULL, "particles", "totpart");