Orange branch: Revived hidden treasure, the Groups!

Previous experiment (in 2000) didn't satisfy, it had even some primitive
NLA option in groups... so, cleaned up the old code (removed most) and
integrated it back in a more useful way.

Usage:
- CTRL+G gives menu to add group, add to existing group, or remove from
  groups.
- In Object buttons, a new (should become first) Panel was added, showing
  not only Object "ID button" and Parent, but also the Groups the Object
  Belongs to. These buttons also allow rename, assigning or removing.
- To indicate Objects are grouped, they're drawn in a (not theme yet, so
  temporal?) green wire color.
- Use ALT+SHIFT mouse-select to (de)select an entire group

But, the real power of groups is in the following features:

-> Particle Force field and Guide control
In the "Particle Motion" Panel, you can indicate a Group name, this then
limits force fields or guides to members of that Group. (Note that layers
still work on top of that... not sure about that).

-> Light Groups
In the Material "Shaders" Panel, you can indicate a Group name to limit
lighting for the Material to lamps in this group. The Lights in a Group do
need to be 'visible' for the Scene to be rendered (as usual).

-> Group Duplicator
In the Object "Anim" Panel, you can set any Object (use Empty!) to
duplicate an entire Group. It will make copies of all Objects in that Group.
Also works for animated Objects, but it will copy the current positions or
deforms. Control over 'local timing' (so we can do Massive anims!) will be
added later.
(Note; this commit won't render Group duplicators yet, a fix in bf-blender
will enable that, next commit will sync)

-> Library Appending
In the SHIFT-F1 or SHIFT+F4 browsers, you can also find the Groups listed.
By appending or linking the Group itself, and use the Group Duplicator, you
now can animate and position linked Objects. The nice thing is that the
local saved file itself will only store the Group name that was linked, so
on a next file read, the Group Objects will be re-read as stored (changed)
in the Library file.
(Note; current implementation also "gives a base" to linked Group Objects,
to show them as Objects in the current Scene. Need that now for testing
purposes, but probably will be removed later).

-> Outliner
Outliner now shows Groups as optio too, nice to organize your data a bit too!

In General, Groups have a very good potential... for example, it could
become default for MetaBall Objects too (jiri, I can help you later on how
this works). All current 'layer relationships' in Blender should be dropped
in time, I guess...

6 files changed, 11 insertions, 50 deletions

diff --git a/source/blender/makesdna/DNA_effect_types.h b/source/blender/makesdna/DNA_effect_types.h
index 46ce9b7d017..86ffb0fc4ad 100644
--- a/source/blender/makesdna/DNA_effect_types.h
+++ b/source/blender/makesdna/DNA_effect_types.h
@@ -104,6 +104,7 @@ typedef struct Particle {
 	short mat_nr, rt;
 } Particle;
 
+struct Group;
 
 typedef struct PartEff {
 	struct PartEff *next, *prev;
@@ -125,7 +126,9 @@ typedef struct PartEff {
 	short disp, vertgroup_v;
 	
 	char vgroupname[32], vgroupname_v[32];
+	
 	Particle *keys;
+	struct Group *group;
 	
 } PartEff;
 
diff --git a/source/blender/makesdna/DNA_group_types.h b/source/blender/makesdna/DNA_group_types.h
index f7139101476..2ee699839ed 100644
--- a/source/blender/makesdna/DNA_group_types.h
+++ b/source/blender/makesdna/DNA_group_types.h
@@ -38,50 +38,11 @@
 #include "DNA_ID.h"
 
 struct Object;
-struct Ipo;
-
-typedef struct GroupKey {
-	struct GroupKey *next, *prev;
-	short sfra, efra;
-	float cfra;
-	char name[32];
-} GroupKey;
-
-typedef struct ObjectKey {
-	struct ObjectKey *next, *prev;
-	GroupKey *gkey;		/* for reference */
-
-	/* copy of relevant data */
-	short partype, pad;
-	int par1, par2, par3;
-	
-	struct Object *parent, *track;
-	struct Ipo *ipo;
-
-	/* this block identical to object */	
-	float loc[3], dloc[3], orig[3];
-	float size[3], dsize[3];
-	float rot[3], drot[3];
-	float quat[4], dquat[4];
-	float obmat[4][4];
-	float parentinv[4][4];
-	float imat[4][4];	/* voor bij render, tijdens simulate, tijdelijk: ipokeys van transform  */
-	
-	unsigned int lay;				/* kopie van Base */
-	
-	char transflag, ipoflag;
-	char trackflag, upflag;
-	
-	float sf, ctime, padf;
-		
-
-} ObjectKey;
 
 typedef struct GroupObject {
 	struct GroupObject *next, *prev;
 	struct Object *ob;
-	ListBase okey;		/* ObjectKey */
-	
+	void *lampren;		/* used while render */
 } GroupObject;
 
 
@@ -89,11 +50,9 @@ typedef struct Group {
 	ID id;
 	
 	ListBase gobject;	/* GroupObject */
-	ListBase gkey;		/* GroupKey */
-	
-	GroupKey *active;
 	
 } Group;
 
+
 #endif
 
diff --git a/source/blender/makesdna/DNA_material_types.h b/source/blender/makesdna/DNA_material_types.h
index 3f74370ac1f..bbe7d0f8125 100644
--- a/source/blender/makesdna/DNA_material_types.h
+++ b/source/blender/makesdna/DNA_material_types.h
@@ -46,6 +46,7 @@ struct MTex;
 struct Ipo;
 struct Material;
 struct ColorBand;
+struct Group;
 
 typedef struct MaterialLayer {
 	struct MaterialLayer *next, *prev;
@@ -109,6 +110,7 @@ typedef struct Material {
 	struct MTex *mtex[10];
 	ListBase layers;
 	struct Ipo *ipo;
+	struct Group *group;
 	
 	/* dynamic properties */
 	float friction, fh, reflect;
diff --git a/source/blender/makesdna/DNA_object_types.h b/source/blender/makesdna/DNA_object_types.h
index 1d16015a628..88075e718de 100644
--- a/source/blender/makesdna/DNA_object_types.h
+++ b/source/blender/makesdna/DNA_object_types.h
@@ -188,10 +188,7 @@ typedef struct Object {
 	
 	struct PartDeflect *pd;		/* particle deflector/attractor/collision data */
 	struct SoftBody *soft;		/* if exists, saved in file */
-	struct Life *life;
-
-	LBuf lbuf;
-	LBuf port;
+	struct Group *dup_group;	/* object duplicator for group */
 	
 	short fluidsimFlag;			/* NT toggle fluidsim participation on/off */
 	char shapenr, shapeflag;	/* current shape key for menu or pinned, flag for pinning */
@@ -262,13 +259,13 @@ extern Object workob;
 #define OB_OFFS_LOCAL	1
 #define OB_QUAT			2
 #define OB_NEG_SCALE	4
-#define OB_DUPLI		(8+16)
+#define OB_DUPLI		(8+16+256)
 #define OB_DUPLIFRAMES	8
 #define OB_DUPLIVERTS	16
 #define OB_DUPLIROT		32
 #define OB_DUPLINOSPEED	64
-
 #define OB_POWERTRACK	128
+#define OB_DUPLIGROUP	256
 
 /* (short) ipoflag */
 #define OB_DRAWKEY			1
diff --git a/source/blender/makesdna/DNA_scene_types.h b/source/blender/makesdna/DNA_scene_types.h
index 6323caeda6c..968aa6abe56 100644
--- a/source/blender/makesdna/DNA_scene_types.h
+++ b/source/blender/makesdna/DNA_scene_types.h
@@ -289,7 +289,6 @@ typedef struct Scene {
 	
 	ListBase base;
 	struct Base *basact;
-	struct Group *group;
 	
 	float cursor[3];
 	float twcent[3];			/* center for transform widget */
diff --git a/source/blender/makesdna/DNA_space_types.h b/source/blender/makesdna/DNA_space_types.h
index 7007981ff64..5a7e84c62ef 100644
--- a/source/blender/makesdna/DNA_space_types.h
+++ b/source/blender/makesdna/DNA_space_types.h
@@ -483,6 +483,7 @@ typedef struct SpaceImaSel {
 #define SO_SELECTED		3
 #define SO_ACTIVE		4
 #define SO_SAME_TYPE	5
+#define SO_GROUPS		6
 
 /* SpaceOops->storeflag */
 #define SO_TREESTORE_CLEANUP	1