bool
LinkableValueNode::set_link(int i,ValueNode::Handle x)
{
ValueNode::Handle previous(get_link(i));
if(set_link_vfunc(i,x))
{
// Fix 2412072: remove the previous link from the parent_set unless one of the other links is also
// using it when we convert a value to 'switch', both 'on' and 'off' are linked to the same valuenode
// if we then disconnect one of the two, the one we disconnect is set to be a new valuenode_const
// and the previously shared value is removed from the parent set even though the other is still
// using it
if(previous)
{
int size = link_count(), index;
for (index=0; index < size; ++index)
{
if (i == index) continue;
if (get_link(index) == previous)
break;
}
if (index == size)
remove_child(previous.get());
}
add_child(x.get());
if(!x->is_exported() && get_parent_canvas())
{
x->set_parent_canvas(get_parent_canvas());
}
changed();
return true;
}
return false;
}
void
ValueNode_Random::randomize_seed()
{
int i = get_link_index_from_name("seed");
ValueNode::Handle link = get_link_vfunc(i);
if(!link->is_exported() && link->get_name() == "constant")
{
int seed = time(NULL) + rand();
if (seed < 0) seed = -seed;
random.set_seed(seed);
set_link(i, ValueNode_Const::create(seed));
}
}