uniform_successor_sampler_impl.h

#include "probfd/successor_samplers/uniform_successor_sampler.h"
 
#include "probfd/distribution.h"
 
#include "downward/utils/rng.h"
 
#include <memory>
#include <utility>
 
namespace probfd::successor_samplers {
 
template <typename Action>
UniformSuccessorSampler<Action>::UniformSuccessorSampler(int random_seed)
    : rng_(std::make_shared<utils::RandomNumberGenerator>(random_seed))
{
}
 
template <typename Action>
UniformSuccessorSampler<Action>::UniformSuccessorSampler(
    std::shared_ptr<utils::RandomNumberGenerator> rng)
    : rng_(std::move(rng))
{
}
 
template <typename Action>
StateID UniformSuccessorSampler<Action>::sample(
    StateID,
    Action,
    const Distribution<StateID>& successors,
    algorithms::StateProperties&)
{
    assert(!successors.empty());
    return successors.begin()[rng_->random(successors.size())].item;
}
 
} // namespace probfd::successor_samplers