New things for particle effectors:

- For newtonian particles a "self effect" button in particle extras makes the particles be effected by themselves if a particle effector is defined for this system, currently this is a brute force method so things start getting slow with more than ~100 particles, but this will hopefully change in the future.
- Two new effector types: charge and a Lennard-Jones potential based force (inter-molecular forces for example).
   -Charge is similar to spherical field except it changes behavior (attract/repulse) based on the effected particles charge field (negative/positive) like real particles with a charge.
   -The Lennard-Jones field is a very short range force with a behavior determined by the sizes of the effector and effected particle. At a distance smaller than the combined sizes the field is very repulsive and after that distance it's attractive. It tries to keep the particles at an equilibrium distance from each other. Particles need to be at a close proximity to each other to be effected by this field at all.
- Particle systems can now have two effector fields (two slots in the fields panel). This allows to create particles which for example have both a charge and a Lennard-Jones potential.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/makesdna/DNA_object_force.h b/source/blender/makesdna/DNA_object_force.h
index 5f6ae7c7f06..5900e16d5e8 100644
--- a/source/blender/makesdna/DNA_object_force.h
+++ b/source/blender/makesdna/DNA_object_force.h
@@ -156,8 +156,8 @@ typedef struct SoftBody {
 #define PFIELD_GUIDE	5
 #define PFIELD_TEXTURE	6
 #define PFIELD_HARMONIC	7
-#define PFIELD_NUCLEAR	8
-#define PFIELD_MDIPOLE	9
+#define PFIELD_CHARGE	8
+#define PFIELD_LENNARDJ	9
 
 
 /* pd->flag: various settings */