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#include "world.hpp"
#include "chunk.hpp"
#include "entity.hpp"
#include "compat/int-hash.hpp"
#include "compat/exception.hpp"
using namespace floormat;
size_t std::hash<chunk_coords_>::operator()(const chunk_coords_& coord) const noexcept
{
std::size_t x = 0;
x |= size_t(uint16_t(coord.y)) << 16;
x |= size_t(uint16_t(coord.x));
if constexpr(sizeof(size_t) > 4)
x |= size_t(uint8_t(coord.z- chunk_z_min) & 0xf) << 32;
else
x ^= size_t(uint8_t(coord.z- chunk_z_min) & 0xf) * size_t(1664525);
if constexpr(sizeof(size_t) > 4)
return int_hash(uint64_t(x));
else
return int_hash(uint32_t(x));
}
namespace floormat {
world::world(world&& w) noexcept = default;
world::world(std::unordered_map<chunk_coords_, chunk>&& chunks) :
world{std::max(initial_capacity, size_t(1/max_load_factor * 2 * chunks.size()))}
{
for (auto&& [coord, c] : chunks)
operator[](coord) = std::move(c);
}
world& world::operator=(world&& w) noexcept
{
if (&w != this) [[likely]]
{
fm_assert(!w._teardown);
fm_assert(!_teardown);
_last_collection = w._last_collection;
_collect_every = w._collect_every;
_unique_id = std::move(w._unique_id);
fm_assert(_unique_id);
fm_debug_assert(w._unique_id == nullptr);
_last_chunk = {};
_chunks = std::move(w._chunks);
_entities = std::move(w._entities);
_entity_counter = w._entity_counter;
_current_frame = w._current_frame;
w._entity_counter = 0;
for (auto& [id, c] : _chunks)
c._world = this;
}
return *this;
}
world::world() : world{initial_capacity}
{
}
world::~world() noexcept
{
_teardown = true;
for (auto& [k, v] : _chunks)
{
v._teardown = true;
v.mark_scenery_modified();
v.mark_passability_modified();
_last_chunk = {};
v._entities.clear();
}
_last_chunk = {};
_chunks.clear();
_entities.clear();
}
world::world(size_t capacity) : _chunks{capacity}
{
_chunks.max_load_factor(max_load_factor);
_chunks.reserve(initial_capacity);
_entities.max_load_factor(max_load_factor);
_entities.reserve(initial_capacity);
}
chunk& world::operator[](chunk_coords_ coord) noexcept
{
fm_debug_assert(coord.z >= chunk_z_min && coord.z <= chunk_z_max);
auto& [c, coord2] = _last_chunk;
if (coord != coord2)
c = &_chunks.try_emplace(coord, *this).first->second;
coord2 = coord;
return *c;
}
auto world::operator[](global_coords pt) noexcept -> pair
{
auto& c = operator[]({pt.chunk(), pt.z()});
return { c, c[pt.local()] };
}
chunk* world::at(chunk_coords_ c) noexcept
{
auto it = _chunks.find(c);
if (it != _chunks.end())
return &it->second;
else
return nullptr;
}
bool world::contains(chunk_coords_ c) const noexcept
{
return _chunks.find(c) != _chunks.cend();
}
void world::clear()
{
fm_assert(!_teardown);
_last_collection = 0;
_chunks.clear();
_chunks.rehash(initial_capacity);
_entities.clear();
_entities.rehash(initial_capacity);
_collect_every = initial_collect_every;
_entity_counter = entity_counter_init;
auto& [c, pos] = _last_chunk;
c = nullptr;
pos = chunk_tuple::invalid_coords;
}
void world::maybe_collect()
{
if (_chunks.size() > _last_collection + _collect_every)
collect();
}
void world::collect(bool force)
{
const auto len0 = _chunks.size();
for (auto it = _chunks.begin(); it != _chunks.end(); (void)0)
{
const auto& [_, c] = *it;
if (c.empty(force))
it = _chunks.erase(it);
else
++it;
}
_last_collection = _chunks.size();
auto& [c, pos] = _last_chunk;
c = nullptr;
pos = chunk_tuple::invalid_coords;
const auto len = len0 - _chunks.size();
if (len)
fm_debug("world: collected %zu/%zu chunks", len, len0);
}
void world::do_make_entity(const std::shared_ptr<entity>& e, global_coords pos, bool sorted)
{
fm_assert(e->id > 0);
fm_debug_assert(_unique_id && e->c->world()._unique_id == _unique_id);
fm_assert(!_entities.contains(e->id));
fm_assert(Vector2ui(e->bbox_size).product() > 0);
fm_assert(e->type() != entity_type::none);
const_cast<global_coords&>(e->coord) = pos;
_entities[e->id] = e;
if (sorted)
e->c->add_entity(e);
else
e->c->add_entity_unsorted(e);
}
void world::do_kill_entity(object_id id)
{
fm_debug_assert(id > 0);
auto cnt = _entities.erase(id);
fm_debug_assert(cnt > 0);
}
std::shared_ptr<entity> world::find_entity_(object_id id)
{
auto it = _entities.find(id);
auto ret = it == _entities.end() ? nullptr : it->second.lock();
fm_debug_assert(!ret || &ret->c->world() == this);
return ret;
}
void world::set_entity_counter(object_id value)
{
fm_assert(value >= _entity_counter);
_entity_counter = value;
}
void world::throw_on_wrong_entity_type(object_id id, entity_type actual, entity_type expected)
{
fm_throw("object '{}' has wrong entity type '{}', should be '{}'"_cf, id, (size_t)actual, (size_t)expected);
}
auto world::neighbors(floormat::chunk_coords_ coord) -> std::array<neighbor_pair, 8>
{
std::array<neighbor_pair, 8> ret;
for (auto i = 0uz; const auto& x : neighbor_offsets)
{
auto ch = coord + x;
ret[i++] = { at(ch), ch };
}
return ret;
}
} // namespace floormat
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