Fluid physics for particles by Raul Fernandez Hernandez (Farsthary) and Stephen Swhitehorn:

This patch add SPH (Smoothed Particle Hydrodynamics)fluid dynamics to the
blender particle system. SPH is an boundless Lagrangian interpolation
technique to solve the fluid motion equations.
 
From liquids to sand, goo and gases could be simulated using the particle
system.
 
It features internal viscosity, a double density relaxation that accounts
for surface tension effects, static internal springs for plastic fluids,
and buoyancy for gases.

---------------------------------------

This is a commit of the core fluid physics. Raul will work on proper
documentation soon and more features such as surface extraction from
the particle point cloud and increasing stability by sub-frame calculations
later.

2 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index a51ecbd2a15..b23b0edb285 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -3038,6 +3038,7 @@ static void direct_link_particlesettings(FileData *fd, ParticleSettings *part)
 	link_list(fd, &part->dupliweights);
 
 	part->boids= newdataadr(fd, part->boids);
+	part->fluid= newdataadr(fd, part->fluid);
 
 	if(part->boids) {
 		BoidState *state;
diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index f5470d1ecec..2b32bbdf0c1 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -652,6 +652,9 @@ static void write_particlesettings(WriteData *wd, ListBase *idbase)
 				for(; state; state=state->next)
 					write_boid_state(wd, state);
 			}
+			if(part->fluid && part->phystype == PART_PHYS_FLUID){
+				writestruct(wd, DATA, "SPHFluidSettings", 1, part->fluid); 
+			}
 		}
 		part= part->id.next;
 	}