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#include "editor.hpp"
#include "serialize/json-helper.hpp"
#include "serialize/tile-atlas.hpp"
#include "src/loader.hpp"
#include "random.hpp"
#include "compat/assert.hpp"
#include "compat/unreachable.hpp"
#include "src/tile-defs.hpp"
#include "src/world.hpp"
#include <Corrade/Containers/StringStlView.h>
#include <filesystem>
#include <vector>
namespace floormat {
static const std::filesystem::path image_path{IMAGE_PATH, std::filesystem::path::generic_format};
tile_type::tile_type(editor_mode mode, Containers::StringView name) : _name{name}, _mode{mode}
{
load_atlases();
}
void tile_type::load_atlases()
{
using atlas_array = std::vector<std::shared_ptr<tile_atlas>>;
for (auto& atlas : json_helper::from_json<atlas_array>(image_path/(_name + ".json")))
{
Containers::StringView name = atlas->name();
if (auto x = name.findLast('.'); x)
name = name.prefix(x.data());
auto& [_, vec] = _permutation;
vec.reserve((std::size_t)atlas->num_tiles());
_atlases[name] = std::move(atlas);
}
}
std::shared_ptr<tile_atlas> tile_type::maybe_atlas(Containers::StringView str)
{
auto it = std::find_if(_atlases.begin(), _atlases.end(), [&](const auto& tuple) -> bool {
const auto& [x, _] = tuple;
return Containers::StringView{x} == str;
});
if (it == _atlases.end())
return nullptr;
else
return it->second;
}
std::shared_ptr<tile_atlas> tile_type::atlas(Containers::StringView str)
{
if (auto ptr = maybe_atlas(str); ptr)
return ptr;
else
fm_abort("no such atlas: %s", str.cbegin());
}
void tile_type::clear_selection()
{
_selected_tile = {};
_permutation = {};
_selection_mode = sel_none;
}
void tile_type::select_tile(const std::shared_ptr<tile_atlas>& atlas, std::size_t variant)
{
fm_assert(atlas);
clear_selection();
_selection_mode = sel_tile;
_selected_tile = { atlas, variant % atlas->num_tiles() };
}
void tile_type::select_tile_permutation(const std::shared_ptr<tile_atlas>& atlas)
{
fm_assert(atlas);
clear_selection();
_selection_mode = sel_perm;
_permutation = { atlas, {} };
}
bool tile_type::is_tile_selected(const std::shared_ptr<const tile_atlas>& atlas, std::size_t variant) const
{
return atlas && _selection_mode == sel_tile && _selected_tile &&
atlas == _selected_tile.atlas && variant == _selected_tile.variant;
}
bool tile_type::is_permutation_selected(const std::shared_ptr<const tile_atlas>& atlas) const
{
const auto& [perm, _] = _permutation;
return atlas && _selection_mode == sel_perm && perm == atlas;
}
bool tile_type::is_atlas_selected(const std::shared_ptr<const tile_atlas>& atlas) const
{
switch (_selection_mode)
{
default:
case sel_none:
return false;
case sel_perm:
return is_permutation_selected(atlas);
case sel_tile:
return atlas && _selected_tile && atlas == _selected_tile.atlas;
}
}
template<std::random_access_iterator T>
void fisher_yates(T begin, T end)
{
const auto N = std::distance(begin, end);
for (auto i = N-1; i >= 1; i--)
{
const auto j = random(i+1);
using std::swap;
swap(begin[i], begin[j]);
}
}
tile_image tile_type::get_selected_perm()
{
auto& [atlas, vec] = _permutation;
const std::size_t N = atlas->num_tiles();
if (N == 0)
return {};
if (vec.empty())
{
for (std::size_t i = 0; i < N; i++)
vec.push_back(i);
fisher_yates(vec.begin(), vec.end());
}
const auto idx = vec.back();
vec.pop_back();
return {atlas, idx};
}
tile_image tile_type::get_selected()
{
switch (_selection_mode)
{
case sel_none:
return {};
case sel_tile:
return _selected_tile;
case sel_perm:
return get_selected_perm();
default:
fm_warn_once("invalid editor mode '%u'", (unsigned)_selection_mode);
break;
}
}
void tile_type::place_tile(world& world, global_coords pos, tile_image& img)
{
const auto& [c, t] = world[pos];
const auto& [atlas, variant] = img;
switch (_mode)
{
default:
fm_warn_once("invalid editor mode '%u'", (unsigned)_mode);
break;
case editor_mode::select:
break;
case editor_mode::floor: {
const auto& [c, t] = world[pos];
t.ground_image = { atlas, variant };
break;
}
case editor_mode::walls: {
break; // todo
}
}
}
editor::editor()
{
set_mode(editor_mode::floor); // TODO
}
void editor::set_mode(editor_mode mode)
{
_mode = mode;
on_release();
}
const tile_type* editor::current() const
{
switch (_mode)
{
case editor_mode::select:
return nullptr;
case editor_mode::floor:
return &_floor;
case editor_mode::walls:
return nullptr; // todo
default:
fm_warn_once("invalid editor mode '%u'", (unsigned)_mode);
return nullptr;
}
}
tile_type* editor::current()
{
return const_cast<tile_type*>(static_cast<const editor&>(*this).current());
}
void editor::on_release()
{
_last_pos = std::nullopt;
}
void editor::on_mouse_move(world& world, const global_coords pos)
{
if (_last_pos && *_last_pos != pos)
{
_last_pos = pos;
on_click(world, pos);
}
}
void editor::on_click(world& world, global_coords pos)
{
if (auto* mode = current(); mode)
{
auto opt = mode->get_selected();
if (opt)
{
_last_pos = pos;
mode->place_tile(world, pos, opt);
}
else
on_release();
}
}
} // namespace floormat
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