Simulations: Add new simulation data block

This data block will be the container for simulation node trees.
It will be used for the new particle node system (T73324).

The new data block has the type `ID_SIM`.
It is not visible to users and other developers by default yet.
To enable it, activate the cmake option `WITH_NEW_SIMULATION_TYPE`.

New simulation data blocks can be created by running `bpy.data.simulations.new("name")`.

Reviewers: brecht

Differential Revision: https://developer.blender.org/D7225

4 files changed, 31 insertions, 0 deletions

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
index 01cc95813ca..0c0cc8ebc97 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
@@ -60,6 +60,7 @@ extern "C" {
 #include "DNA_rigidbody_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
+#include "DNA_simulation_types.h"
 #include "DNA_sound_types.h"
 #include "DNA_speaker_types.h"
 #include "DNA_texture_types.h"
@@ -481,6 +482,9 @@ void DepsgraphNodeBuilder::build_id(ID *id)
     case ID_SCE:
       build_scene_parameters((Scene *)id);
       break;
+    case ID_SIM:
+      build_simulation((Simulation *)id);
+      break;
     default:
       fprintf(stderr, "Unhandled ID %s\n", id->name);
       BLI_assert(!"Should never happen");
@@ -1698,6 +1702,16 @@ void DepsgraphNodeBuilder::build_sound(bSound *sound)
   build_parameters(&sound->id);
 }
 
+void DepsgraphNodeBuilder::build_simulation(Simulation *simulation)
+{
+  if (built_map_.checkIsBuiltAndTag(simulation)) {
+    return;
+  }
+  add_id_node(&simulation->id);
+  build_animdata(&simulation->id);
+  build_parameters(&simulation->id);
+}
+
 void DepsgraphNodeBuilder::build_scene_sequencer(Scene *scene)
 {
   if (scene->ed == nullptr) {
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes.h b/source/blender/depsgraph/intern/builder/deg_builder_nodes.h
index 7fcc8b431e7..15c1a42574f 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes.h
@@ -52,6 +52,7 @@ struct MovieClip;
 struct Object;
 struct ParticleSettings;
 struct Scene;
+struct Simulation;
 struct Speaker;
 struct Tex;
 struct World;
@@ -217,6 +218,7 @@ class DepsgraphNodeBuilder : public DepsgraphBuilder {
   virtual void build_lightprobe(LightProbe *probe);
   virtual void build_speaker(Speaker *speaker);
   virtual void build_sound(bSound *sound);
+  virtual void build_simulation(Simulation *simulation);
   virtual void build_scene_sequencer(Scene *scene);
   virtual void build_scene_audio(Scene *scene);
   virtual void build_scene_speakers(Scene *scene, ViewLayer *view_layer);
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index e968ad1ea5d..1adf7c09c28 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -62,6 +62,7 @@ extern "C" {
 #include "DNA_rigidbody_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
+#include "DNA_simulation_types.h"
 #include "DNA_sound_types.h"
 #include "DNA_speaker_types.h"
 #include "DNA_texture_types.h"
@@ -558,6 +559,9 @@ void DepsgraphRelationBuilder::build_id(ID *id)
     case ID_SCE:
       build_scene_parameters((Scene *)id);
       break;
+    case ID_SIM:
+      build_simulation((Simulation *)id);
+      break;
     default:
       fprintf(stderr, "Unhandled ID %s\n", id->name);
       BLI_assert(!"Should never happen");
@@ -2502,6 +2506,15 @@ void DepsgraphRelationBuilder::build_sound(bSound *sound)
   build_parameters(&sound->id);
 }
 
+void DepsgraphRelationBuilder::build_simulation(Simulation *simulation)
+{
+  if (built_map_.checkIsBuiltAndTag(simulation)) {
+    return;
+  }
+  build_animdata(&simulation->id);
+  build_parameters(&simulation->id);
+}
+
 void DepsgraphRelationBuilder::build_scene_sequencer(Scene *scene)
 {
   if (scene->ed == nullptr) {
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.h b/source/blender/depsgraph/intern/builder/deg_builder_relations.h
index 099a00d66a6..caec7cc1496 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.h
@@ -68,6 +68,7 @@ struct Object;
 struct ParticleSettings;
 struct ParticleSystem;
 struct Scene;
+struct Simulation;
 struct Speaker;
 struct Tex;
 struct ViewLayer;
@@ -282,6 +283,7 @@ class DepsgraphRelationBuilder : public DepsgraphBuilder {
   virtual void build_lightprobe(LightProbe *probe);
   virtual void build_speaker(Speaker *speaker);
   virtual void build_sound(bSound *sound);
+  virtual void build_simulation(Simulation *simulation);
   virtual void build_scene_sequencer(Scene *scene);
   virtual void build_scene_audio(Scene *scene);
   virtual void build_scene_speakers(Scene *scene, ViewLayer *view_layer);