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

6 files changed, 94 insertions, 1 deletions

diff --git a/source/blender/makesdna/DNA_ID.h b/source/blender/makesdna/DNA_ID.h
index 0565840b344..ba1485004ae 100644
--- a/source/blender/makesdna/DNA_ID.h
+++ b/source/blender/makesdna/DNA_ID.h
@@ -424,6 +424,7 @@ typedef enum ID_Type {
   ID_HA = MAKE_ID2('H', 'A'),  /* Hair */
   ID_PT = MAKE_ID2('P', 'T'),  /* PointCloud */
   ID_VO = MAKE_ID2('V', 'O'),  /* Volume */
+  ID_SIM = MAKE_ID2('S', 'I'), /* Simulation */
 } ID_Type;
 
 /* Only used as 'placeholder' in .blend files for directly linked data-blocks. */
@@ -723,6 +724,7 @@ typedef enum IDRecalcFlag {
 #define FILTER_ID_HA (1ULL << 32)
 #define FILTER_ID_PT (1ULL << 33)
 #define FILTER_ID_VO (1ULL << 34)
+#define FILTER_ID_SIM (1ULL << 35)
 
 #define FILTER_ID_ALL \
   (FILTER_ID_AC | FILTER_ID_AR | FILTER_ID_BR | FILTER_ID_CA | FILTER_ID_CU | FILTER_ID_GD | \
@@ -730,7 +732,7 @@ typedef enum IDRecalcFlag {
    FILTER_ID_MB | FILTER_ID_MC | FILTER_ID_ME | FILTER_ID_MSK | FILTER_ID_NT | FILTER_ID_OB | \
    FILTER_ID_PA | FILTER_ID_PAL | FILTER_ID_PC | FILTER_ID_SCE | FILTER_ID_SPK | FILTER_ID_SO | \
    FILTER_ID_TE | FILTER_ID_TXT | FILTER_ID_VF | FILTER_ID_WO | FILTER_ID_CF | FILTER_ID_WS | \
-   FILTER_ID_LP | FILTER_ID_HA | FILTER_ID_PT | FILTER_ID_VO)
+   FILTER_ID_LP | FILTER_ID_HA | FILTER_ID_PT | FILTER_ID_VO | FILTER_ID_SIM)
 
 /* IMPORTANT: this enum matches the order currently use in set_listbasepointers,
  * keep them in sync! */
@@ -774,6 +776,7 @@ enum {
   INDEX_ID_WS,
   INDEX_ID_WM,
   INDEX_ID_MSK,
+  INDEX_ID_SIM,
   INDEX_ID_NULL,
   INDEX_ID_MAX,
 };
diff --git a/source/blender/makesdna/DNA_simulation_defaults.h b/source/blender/makesdna/DNA_simulation_defaults.h
new file mode 100644
index 00000000000..b4cecd861a9
--- /dev/null
+++ b/source/blender/makesdna/DNA_simulation_defaults.h
@@ -0,0 +1,40 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup DNA
+ */
+
+#ifndef __DNA_SIMULATION_DEFAULTS_H__
+#define __DNA_SIMULATION_DEFAULTS_H__
+
+/* Struct members on own line. */
+/* clang-format off */
+
+/* -------------------------------------------------------------------- */
+/** \name Simulation Struct
+ * \{ */
+
+#define _DNA_DEFAULT_Simulation \
+  { \
+    .flag = 0, \
+  }
+
+/** \} */
+
+/* clang-format on */
+
+#endif /* __DNA_SIMULATION_DEFAULTS_H__ */
diff --git a/source/blender/makesdna/DNA_simulation_types.h b/source/blender/makesdna/DNA_simulation_types.h
new file mode 100644
index 00000000000..84c22d7f73a
--- /dev/null
+++ b/source/blender/makesdna/DNA_simulation_types.h
@@ -0,0 +1,39 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup DNA
+ */
+
+#ifndef __DNA_SIMULATION_TYPES_H__
+#define __DNA_SIMULATION_TYPES_H__
+
+#include "DNA_ID.h"
+
+typedef struct Simulation {
+  ID id;
+  struct AnimData *adt; /* animation data (must be immediately after id) */
+
+  int flag;
+  int _pad1[1];
+} Simulation;
+
+/* Simulation.flag */
+enum {
+  SIM_DS_EXPAND = (1 << 0),
+};
+
+#endif /* __DNA_SIMULATION_TYPES_H__ */
diff --git a/source/blender/makesdna/intern/CMakeLists.txt b/source/blender/makesdna/intern/CMakeLists.txt
index a101e96e958..1b0bf086269 100644
--- a/source/blender/makesdna/intern/CMakeLists.txt
+++ b/source/blender/makesdna/intern/CMakeLists.txt
@@ -146,6 +146,7 @@ set(SRC
   ../DNA_object_defaults.h
   ../DNA_pointcloud_defaults.h
   ../DNA_scene_defaults.h
+  ../DNA_simulation_defaults.h
   ../DNA_speaker_defaults.h
   ../DNA_texture_defaults.h
   ../DNA_vec_defaults.h
diff --git a/source/blender/makesdna/intern/dna_defaults.c b/source/blender/makesdna/intern/dna_defaults.c
index dadd2fd9d7d..2d86e97debf 100644
--- a/source/blender/makesdna/intern/dna_defaults.c
+++ b/source/blender/makesdna/intern/dna_defaults.c
@@ -71,6 +71,7 @@
 #include "DNA_object_types.h"
 #include "DNA_pointcloud_types.h"
 #include "DNA_scene_types.h"
+#include "DNA_simulation_types.h"
 #include "DNA_space_types.h"
 #include "DNA_speaker_types.h"
 #include "DNA_texture_types.h"
@@ -93,6 +94,7 @@
 #include "DNA_object_defaults.h"
 #include "DNA_pointcloud_defaults.h"
 #include "DNA_scene_defaults.h"
+#include "DNA_simulation_defaults.h"
 #include "DNA_speaker_defaults.h"
 #include "DNA_texture_defaults.h"
 #include "DNA_volume_defaults.h"
@@ -150,6 +152,9 @@ SDNA_DEFAULT_DECL_STRUCT(PointCloud);
 SDNA_DEFAULT_DECL_STRUCT(Scene);
 SDNA_DEFAULT_DECL_STRUCT(ToolSettings);
 
+/* DNA_simulation_defaults.h */
+SDNA_DEFAULT_DECL_STRUCT(Simulation);
+
 /* DNA_speaker_defaults.h */
 SDNA_DEFAULT_DECL_STRUCT(Speaker);
 
@@ -260,6 +265,9 @@ const void *DNA_default_table[SDNA_TYPE_MAX] = {
     SDNA_DEFAULT_DECL_EX(GP_Sculpt_Settings, ToolSettings.gp_sculpt),
     SDNA_DEFAULT_DECL_EX(GP_Sculpt_Guide, ToolSettings.gp_sculpt.guide),
 
+    /* DNA_simulation_defaults.h */
+    SDNA_DEFAULT_DECL(Simulation),
+
     /* DNA_speaker_defaults.h */
     SDNA_DEFAULT_DECL(Speaker),
 
diff --git a/source/blender/makesdna/intern/makesdna.c b/source/blender/makesdna/intern/makesdna.c
index 39b26fef176..49f778f2eb1 100644
--- a/source/blender/makesdna/intern/makesdna.c
+++ b/source/blender/makesdna/intern/makesdna.c
@@ -136,6 +136,7 @@ static const char *includefiles[] = {
     "DNA_hair_types.h",
     "DNA_pointcloud_types.h",
     "DNA_volume_types.h",
+    "DNA_simulation_types.h",
 
     /* see comment above before editing! */
 
@@ -1590,6 +1591,7 @@ int main(int argc, char **argv)
 #include "DNA_sdna_types.h"
 #include "DNA_sequence_types.h"
 #include "DNA_shader_fx_types.h"
+#include "DNA_simulation_types.h"
 #include "DNA_sound_types.h"
 #include "DNA_space_types.h"
 #include "DNA_speaker_types.h"