void add_paddle_constraints(ModifiedObjectReference& obj,
Quadtree& q) noexcept
{
for(const auto& node : find_containing_nodes(q.root(), obj.obj.volume))
{
for(id_type other_id : node->get_data()->ids)
{
if(other_id == obj.id) continue;
const Object& other_obj = q.find_object(other_id);
if(!isPaddle(other_obj)) continue;
if(intersecting(obj.obj.volume, other_obj.volume))
{
VolumeSides cs = closest_side(obj.obj.volume, other_obj.volume);
obj.obj.physics_options.constraints |= cs;
}
}
}
}
void add_ball_constraints(ModifiedObjectReference& obj,
Quadtree& q) noexcept
{
for(const auto& node : find_containing_nodes(q.root(), obj.obj.volume))
{
for(id_type other_id : node->get_data()->ids)
{
if(other_id == obj.id) continue;
Object& self = obj.obj;
ModifiedObjectReference other_obj = {other_id,q.find_object(other_id)};
if(!isBall(other_obj.obj)) continue;
const Object& other = other_obj.obj;
if(!intersecting(self.volume, other.volume)) continue;
VolumeSides cs = closest_side(self.volume, other.volume);
self.physics_options.constraints |=
other.physics_options.constraints & cs;
}
}
}