Fix for [#17677] Blender Crash when Baking Boids

- A check for getting the "better" dm was missing from the boids code. I plan on converting the boids code into using the collision modifier one of these days but hopefully this quick fix will do for now.

1 files changed, 4 insertions, 2 deletions

diff --git a/source/blender/blenkernel/intern/particle_system.c b/source/blender/blenkernel/intern/particle_system.c
index 0b5a2b71119..e4b8077cd4e 100644
--- a/source/blender/blenkernel/intern/particle_system.c
+++ b/source/blender/blenkernel/intern/particle_system.c
@@ -2861,7 +2861,7 @@ int psys_intersect_dm(Object *ob, DerivedMesh *dm, float *vert_cos, float *co1,
 
 		dm=mesh_get_derived_final(ob,0);
 		if(dm==0)
-			mesh_get_derived_deform(ob,0);
+			dm=mesh_get_derived_deform(ob,0);
 
 		psys_enable_all(ob);
 
@@ -3319,7 +3319,9 @@ static int boid_see_mesh(ListBase *lb, Object *pob, ParticleSystem *psys, float
 			else{
 				psys_disable_all(ob);
 
-				dm=mesh_get_derived_deform(ob,0);
+				dm=mesh_get_derived_final(ob,0);
+				if(dm==0)
+					dm=mesh_get_derived_deform(ob,0);
 
 				psys_enable_all(ob);
 			}