Hair dynamics with cloth simulation

- Hair dynamics have their own panel in particle settings with the settings from cloth panel that apply to hair.
- Basic internal friction force to quickly emulate self collisions and volume preservation. (Still very early code, but gives some idea of what's possible).
- Softbody simulation is no longer used for hair.
	* Old files with sb dynamics should just load the hair without dynamics so new dynamics can be applied.
	* Invasion of particles exceptions in sb code is finally over.
- Collisions with other objects are disabled for now and will be worked out in the future.

Other changes/fixes:
- Particle mode editing flag wasn't saved properly.
- Some old files with edited hair didn't load correctly.
- Disabled delete & specials menu in particle mode for non-hair editing.
- Fixed yet one more cloth & softbody pointcache update issue.
- Disconnect/connect hair now uses only the deformed mesh so it works correctly also for subsurfed emitters.
- Hair editing now updates correctly with a moving emitter.

1 files changed, 7 insertions, 2 deletions

diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index 46cc62fff1c..98db27182ab 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -660,8 +660,13 @@ static void write_particlesystems(WriteData *wd, ListBase *particles)
 			writestruct(wd, DATA, "ParticleTarget", 1, pt);
 
 		if(psys->child) writestruct(wd, DATA, "ChildParticle", psys->totchild ,psys->child);
-		writestruct(wd, DATA, "SoftBody", 1, psys->soft);
-		if(psys->soft) write_pointcaches(wd, &psys->soft->ptcaches);
+
+		if(psys->clmd) {
+			writestruct(wd, DATA, "ClothModifierData", 1, psys->clmd);
+			writestruct(wd, DATA, "ClothSimSettings", 1, psys->clmd->sim_parms);
+			writestruct(wd, DATA, "ClothCollSettings", 1, psys->clmd->coll_parms);
+		}
+		
 		write_pointcaches(wd, &psys->ptcaches);
 	}
 }