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#include "world.hpp"
#include "chunk.hpp"
namespace floormat {
world::world() : world{initial_capacity}
{
}
world::world(std::size_t capacity) : _chunks{capacity, hasher}
{
_chunks.max_load_factor(max_load_factor);
}
chunk& world::operator[](chunk_coords coord) noexcept
{
maybe_collect();
auto& [c, coord2] = _last_chunk;
if (coord != coord2)
c = &_chunks.try_emplace(coord).first->second;
coord2 = coord;
return *c;
}
auto world::operator[](global_coords pt) noexcept -> pair
{
auto& c = operator[](pt.chunk());
return { c, c[pt.local()] };
}
bool world::contains(chunk_coords c) const noexcept
{
return _chunks.find(c) != _chunks.cend();
}
void world::clear()
{
_last_collection = 0;
_chunks.clear();
_chunks.rehash(initial_capacity);
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);
}
} // namespace floormat
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