Fix force fields not affecting rigid bodies

This fixes part of T58991.
Still need to add proper relations so that point cache is marked as outdated
when effectors are modified.

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index 81b9b32c69671eaf97ebcade65213a1659e1f151..23328721e2cf358eaf21e774c89c752db2ff1295 100644 (file)
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -1597,6 +1597,14 @@ void DepsgraphRelationBuilder::build_rigidbody(Scene *scene)
 
        /* set up dependencies between these operations and other builtin nodes --------------- */
 
+       /* effectors */
+       ListBase *relations = deg_build_effector_relations(graph_, rbw->effector_weights->group);
+       LISTBASE_FOREACH (EffectorRelation *, relation, relations) {
+               ComponentKey eff_key(&relation->ob->id, DEG_NODE_TYPE_TRANSFORM);
+               add_relation(eff_key, init_key, "RigidBody Field");
+               // FIXME add relations so pointache is marked as outdated when effectors are modified
+       }
+
        /* time dependency */
        TimeSourceKey time_src_key;
        add_relation(time_src_key, init_key, "TimeSrc -> Rigidbody Reset/Rebuild (Optional)");