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Brought over a bunch of stuff to get started, but only lel.cpp compiles.

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This commit is contained in:
Zed A. Shaw 2025-05-05 11:42:21 -04:00
parent 26685279ce
commit 103793204d
33 changed files with 2746 additions and 0 deletions
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10
.gitignore vendored
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# Persistent undo
[._]*.un~
subprojects
builddir
ttassets
backup
*.exe
*.dll
*.world
coverage
coverage/*
.venv

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.vimrc_proj Normal file
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set makeprg=meson\ compile\ -C\ .

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Makefile Normal file
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all: build test
reset:
ifeq '$(OS)' 'Windows_NT'
powershell -executionpolicy bypass .\scripts\reset_build.ps1
else
sh -x ./scripts/reset_build.sh
endif
%.cpp : %.rl
ragel -o $@ $<
build: lel_parser.cpp
meson compile -j 10 -C builddir
release_build:
meson --wipe builddir -Db_ndebug=true --buildtype release
meson compile -j 10 -C builddir
debug_build:
meson setup --wipe builddir -Db_ndebug=true --buildtype debugoptimized
meson compile -j 10 -C builddir
tracy_build:
meson setup --wipe builddir --buildtype debugoptimized -Dtracy_enable=true -Dtracy:on_demand=true
meson compile -j 10 -C builddir
test: build
./builddir/runtests
run: build test
ifeq '$(OS)' 'Windows_NT'
powershell "cp ./builddir/calculator.exe ."
./calculator
else
./builddir/calculator
endif
debug: build
gdb --nx -x .gdbinit --ex run --args builddir/calculator
debug_run: build
gdb --nx -x .gdbinit --batch --ex run --ex bt --ex q --args builddir/calculator
debug_walk: build test
gdb --nx -x .gdbinit --batch --ex run --ex bt --ex q --args builddir/calculator t
clean:
meson compile --clean -C builddir
debug_test: build
gdb --nx -x .gdbinit --ex run --args builddir/runtests -e
win_installer:
powershell 'start "C:\Program Files (x86)\solicus\InstallForge\bin\ifbuilderenvx86.exe" scripts\win_installer.ifp'
coverage_report:
powershell 'scripts/coverage_report.ps1'

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dbc.cpp Normal file
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#include "dbc.hpp"
#include <iostream>
void dbc::log(const string &message, const std::source_location location) {
std::cout << '[' << location.file_name() << ':'
<< location.line() << "|"
<< location.function_name() << "] "
<< message << std::endl;
}
void dbc::sentinel(const string &message, const std::source_location location) {
string err = fmt::format("[SENTINEL!] {}", message);
dbc::log(err, location);
throw dbc::SentinelError{err};
}
void dbc::pre(const string &message, bool test, const std::source_location location) {
if(!test) {
string err = fmt::format("[PRE!] {}", message);
dbc::log(err, location);
throw dbc::PreCondError{err};
}
}
void dbc::pre(const string &message, std::function<bool()> tester, const std::source_location location) {
dbc::pre(message, tester(), location);
}
void dbc::post(const string &message, bool test, const std::source_location location) {
if(!test) {
string err = fmt::format("[POST!] {}", message);
dbc::log(err, location);
throw dbc::PostCondError{err};
}
}
void dbc::post(const string &message, std::function<bool()> tester, const std::source_location location) {
dbc::post(message, tester(), location);
}
void dbc::check(bool test, const string &message, const std::source_location location) {
if(!test) {
string err = fmt::format("[CHECK!] {}\n", message);
dbc::log(err, location);
throw dbc::CheckError{err};
}
}

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#pragma once
#include <string>
#include <fmt/core.h>
#include <functional>
#include <source_location>
using std::string;
namespace dbc {
class Error {
public:
const string message;
Error(string m) : message{m} {}
Error(const char *m) : message{m} {}
};
class CheckError : public Error {};
class SentinelError : public Error {};
class PreCondError : public Error {};
class PostCondError : public Error {};
void log(const string &message,
const std::source_location location =
std::source_location::current());
[[noreturn]] void sentinel(const string &message,
const std::source_location location =
std::source_location::current());
void pre(const string &message, bool test,
const std::source_location location =
std::source_location::current());
void pre(const string &message, std::function<bool()> tester,
const std::source_location location =
std::source_location::current());
void post(const string &message, bool test,
const std::source_location location =
std::source_location::current());
void post(const string &message, std::function<bool()> tester,
const std::source_location location =
std::source_location::current());
void check(bool test, const string &message,
const std::source_location location =
std::source_location::current());
}

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#include "guecs.hpp"
#include "shaders.hpp"
#include "sound.hpp"
#include "textures.hpp"
#include <typeinfo>
namespace guecs {
using std::make_shared;
void Textual::init(lel::Cell &cell, shared_ptr<sf::Font> font_ptr) {
dbc::check(font_ptr != nullptr, "you failed to initialize this WideText");
if(font == nullptr) font = font_ptr;
if(text == nullptr) text = make_shared<sf::Text>(*font, content, size);
text->setFillColor(color);
if(centered) {
auto bounds = text->getLocalBounds();
auto text_cell = lel::center(bounds.size.x, bounds.size.y, cell);
// this stupid / 2 is because SFML renders from baseline rather than from the claimed bounding box
text->setPosition({float(text_cell.x), float(text_cell.y) - text_cell.h / 2});
} else {
text->setPosition({float(cell.x + padding * 2), float(cell.y + padding * 2)});
}
text->setCharacterSize(size);
}
void Textual::update(const wstring& new_content) {
content = new_content;
text->setString(content);
}
void Sprite::update(const string& new_name) {
if(new_name != name) {
name = new_name;
auto sprite_texture = textures::get(name);
sprite->setTexture(*sprite_texture.texture);
sprite->setTextureRect(sprite_texture.sprite->getTextureRect());
}
}
void Sprite::init(lel::Cell &cell) {
auto sprite_texture = textures::get(name);
sprite = make_shared<sf::Sprite>(
*sprite_texture.texture,
sprite_texture.sprite->getTextureRect());
sprite->setPosition({
float(cell.x + padding),
float(cell.y + padding)});
auto bounds = sprite->getLocalBounds();
sprite->setScale({
float(cell.w - padding * 2) / bounds.size.x,
float(cell.h - padding * 2) / bounds.size.y});
}
void Rectangle::init(lel::Cell& cell) {
sf::Vector2f size{float(cell.w) - padding * 2, float(cell.h) - padding * 2};
if(shape == nullptr) shape = make_shared<sf::RectangleShape>(size);
shape->setPosition({float(cell.x + padding), float(cell.y + padding)});
shape->setFillColor(color);
shape->setOutlineColor(border_color);
shape->setOutlineThickness(border_px);
}
void Meter::init(lel::Cell& cell) {
bar.init(cell);
}
void Meter::render(lel::Cell& cell) {
float level = std::clamp(percent, 0.0f, 1.0f) * float(cell.w);
// ZED: this 6 is a border width, make it a thing
bar.shape->setSize({std::max(level, 0.0f), float(cell.h - 6)});
}
void Sound::play(bool hover) {
if(!hover) {
sound::play(on_click);
}
}
void Sound::stop(bool hover) {
if(!hover) {
sound::stop(on_click);
}
}
void Background::init() {
sf::Vector2f size{float(w), float(h)};
if(shape == nullptr) shape = make_shared<sf::RectangleShape>(size);
shape->setPosition({float(x), float(y)});
shape->setFillColor(color);
}
void Effect::init(lel::Cell &cell) {
$shader_version = shaders::version();
$shader = shaders::get(name);
$shader->setUniform("u_resolution", sf::Vector2f({float(cell.w), float(cell.h)}));
$clock = std::make_shared<sf::Clock>();
}
void Effect::step() {
sf::Time cur_time = $clock->getElapsedTime();
float u_time = cur_time.asSeconds();
if(u_time < $u_time_end) {
$shader->setUniform("u_duration", duration);
$shader->setUniform("u_time_end", $u_time_end);
$shader->setUniform("u_time", u_time);
} else {
$active = false;
}
}
void Effect::run() {
$active = true;
sf::Time u_time = $clock->getElapsedTime();
$u_time_end = u_time.asSeconds() + duration;
}
shared_ptr<sf::Shader> Effect::checkout_ptr() {
if(shaders::updated($shader_version)) {
$shader = shaders::get(name);
$shader_version = shaders::version();
}
return $shader;
}
void Effect::stop() {
$active = false;
}
UI::UI() {
$font = make_shared<sf::Font>(FONT_FILE_NAME);
}
void UI::position(int x, int y, int width, int height) {
$parser.position(x, y, width, height);
}
sf::Vector2f UI::get_position() {
return {float($parser.grid_x), float($parser.grid_y)};
}
sf::Vector2f UI::get_size() {
return {float($parser.grid_w), float($parser.grid_h)};
}
void UI::layout(const string& grid) {
$grid = grid;
bool good = $parser.parse($grid);
dbc::check(good, "LEL parsing failed.");
for(auto& [name, cell] : $parser.cells) {
auto ent = init_entity(name);
set<lel::Cell>(ent, cell);
}
}
Entity UI::init_entity(const string& name) {
auto ent = entity();
// this lets you look up an entity by name
$name_ents.insert_or_assign(name, ent);
// this makes it easier to get the name during querying
set<CellName>(ent, {name});
return ent;
}
Entity UI::entity(const string& name) {
dbc::check($name_ents.contains(name),
fmt::format("GUECS entity {} does not exist. Mispelled cell name?", name));
return $name_ents.at(name);
}
Entity UI::entity(const string& name, int id) {
return entity(fmt::format("{}{}", name, id));
}
void UI::init() {
query<Background>([](auto, auto& bg) {
bg.init();
});
query<lel::Cell, Rectangle>([](auto, auto& cell, auto& rect) {
rect.init(cell);
});
query<lel::Cell, Effect>([](auto, auto& cell, auto& shader) {
shader.init(cell);
});
query<Rectangle, Meter>([](auto, auto& bg, auto &meter) {
bg.shape->setFillColor(meter.color);
});
query<lel::Cell, Meter>([](auto, auto &cell, auto& meter) {
meter.init(cell);
});
query<lel::Cell, Textual>([this](auto, auto& cell, auto& text) {
text.init(cell, $font);
});
query<lel::Cell, Label>([this](auto, auto& cell, auto& text) {
text.init(cell, $font);
});
query<lel::Cell, Sprite>([&](auto, auto &cell, auto &sprite) {
sprite.init(cell);
});
}
void UI::debug_layout(sf::RenderWindow& window) {
query<lel::Cell>([&](const auto, auto &cell) {
sf::RectangleShape rect{{float(cell.w), float(cell.h)}};
rect.setPosition({float(cell.x), float(cell.y)});
rect.setFillColor(sf::Color::Transparent);
rect.setOutlineColor(sf::Color::Red);
rect.setOutlineThickness(2.0f);
window.draw(rect);
});
}
void UI::render(sf::RenderWindow& window) {
if(auto bg = get_if<Background>(MAIN)) {
window.draw(*(bg->shape));
}
query<Effect>([&](auto, auto& shader) {
if(shader.$active) shader.step();
});
query<Rectangle>([&](auto ent, auto& rect) {
render_helper(window, ent, true, rect.shape);
});
query<lel::Cell, Meter>([&](auto ent, auto& cell, auto &meter) {
meter.render(cell);
render_helper(window, ent, true, meter.bar.shape);
});
query<Sprite>([&](auto ent, auto& sprite) {
render_helper(window, ent, false, sprite.sprite);
});
query<Label>([&](auto ent, auto& text) {
render_helper(window, ent, false, text.text);
});
query<Textual>([&](auto ent, auto& text) {
render_helper(window, ent, true, text.text);
});
}
bool UI::mouse(float x, float y, bool hover) {
int action_count = 0;
query<lel::Cell>([&](auto ent, auto& cell) {
if((x >= cell.x && x <= cell.x + cell.w) &&
(y >= cell.y && y <= cell.y + cell.h))
{
do_if<Effect>(ent, [hover](auto& effect) {
effect.$shader->setUniform("hover", hover);
effect.run();
});
do_if<Sound>(ent, [hover](auto& sound) {
// here set that it played then only play once
sound.play(hover);
});
if(hover) return;
click_on(ent);
action_count++;
} else {
do_if<Effect>(ent, [hover](auto& effect) {
effect.stop();
});
do_if<Sound>(ent, [hover](auto& sound) {
// here set that it played then only play once
sound.stop(hover);
});
}
});
return action_count > 0;
}
void UI::show_sprite(const string& region, const string& sprite_name) {
auto ent = entity(region);
if(auto sprite = get_if<Sprite>(ent)) {
sprite->update(sprite_name);
} else {
set_init<Sprite>(ent, {sprite_name});
}
}
void UI::show_text(const string& region, const wstring& content) {
auto ent = entity(region);
if(auto tc = get_if<Textual>(ent)) {
tc->text->setString(content);
} else {
auto &cell = cell_for(ent);
Textual to_set{content, TEXT_SIZE};
to_set.init(cell, $font);
set<Textual>(ent, to_set);
}
}
void UI::click_on(const string& name, bool required) {
auto ent = entity(name);
if(required) {
dbc::check(has<Clickable>(ent),
fmt::format("click_on required '{}' to exist but it doesn't", name));
}
click_on(ent);
}
void UI::click_on(Entity ent) {
if(auto clicked = get_if<Clickable>(ent)) {
if(auto action_data = get_if<ActionData>(ent)) {
clicked->action(ent, action_data->data);
} else {
clicked->action(ent, {});
}
}
}
void UI::show_label(const string& region, const wstring& content) {
auto ent = entity(region);
if(auto tc = get_if<Label>(ent)) {
tc->text->setString(content);
} else {
auto &cell = cell_for(ent);
Label to_set{content, LABEL_SIZE};
to_set.init(cell, $font);
to_set.text->setFillColor(TEXT_COLOR);
set<Label>(ent, to_set);
}
}
}

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#pragma once
#include "dbc.hpp"
#include "color.hpp"
#include "lel.hpp"
#include <string>
#include <memory>
#include <SFML/Graphics.hpp>
#include <functional>
#include "events.hpp"
#include <any>
#include <queue>
#include <typeindex>
#include <unordered_map>
namespace guecs {
constexpr const int PADDING = 3;
constexpr const int BORDER_PX = 1;
constexpr const int TEXT_SIZE = 30;
constexpr const int LABEL_SIZE = 20;
constexpr const sf::Color FILL_COLOR = ColorValue::DARK_MID;
constexpr const sf::Color TEXT_COLOR = ColorValue::LIGHT_LIGHT;
constexpr const sf::Color BG_COLOR = ColorValue::MID;
constexpr const sf::Color BORDER_COLOR = ColorValue::MID;
constexpr const char *FONT_FILE_NAME="assets/text.otf";
using std::shared_ptr, std::wstring, std::string;
using Entity = unsigned long;
using EntityMap = std::unordered_map<Entity, size_t>;
template <typename T>
struct ComponentStorage {
std::vector<T> data;
std::queue<size_t> free_indices;
};
struct Textual {
std::wstring content;
unsigned int size = TEXT_SIZE;
sf::Color color = TEXT_COLOR;
int padding = PADDING;
bool centered = false;
shared_ptr<sf::Font> font = nullptr;
shared_ptr<sf::Text> text = nullptr;
void init(lel::Cell &cell, shared_ptr<sf::Font> font_ptr);
void update(const std::wstring& new_content);
};
struct Label : public Textual {
template<typename... Args>
Label(Args... args) : Textual(args...)
{
centered = true;
size = LABEL_SIZE;
}
Label() {
centered = true;
};
};
struct Clickable {
/* This is actually called by UI::mouse and passed the entity ID of the
* button pressed so you can interact with it in the event handler.
*/
std::function<void(Entity ent, std::any data)> action;
};
struct Sprite {
string name;
int padding = PADDING;
std::shared_ptr<sf::Sprite> sprite = nullptr;
void init(lel::Cell &cell);
void update(const string& new_name);
};
struct Rectangle {
int padding = PADDING;
sf::Color color = FILL_COLOR;
sf::Color border_color = BORDER_COLOR;
int border_px = BORDER_PX;
shared_ptr<sf::RectangleShape> shape = nullptr;
void init(lel::Cell& cell);
};
struct Meter {
float percent = 1.0f;
sf::Color color = ColorValue::BLACK;
Rectangle bar;
void init(lel::Cell& cell);
void render(lel::Cell& cell);
};
struct ActionData {
std::any data;
};
struct CellName {
string name;
};
struct Effect {
float duration = 0.1f;
string name{"ui_shader"};
float $u_time_end = 0.0;
bool $active = false;
std::shared_ptr<sf::Clock> $clock = nullptr;
std::shared_ptr<sf::Shader> $shader = nullptr;
int $shader_version = 0;
void init(lel::Cell &cell);
void run();
void stop();
void step();
shared_ptr<sf::Shader> checkout_ptr();
};
struct Sound {
string on_click{"ui_click"};
void play(bool hover);
void stop(bool hover);
};
struct Background {
float x = 0.0f;
float y = 0.0f;
float w = 0.0f;
float h = 0.0f;
sf::Color color = BG_COLOR;
shared_ptr<sf::RectangleShape> shape = nullptr;
Background(lel::Parser& parser, sf::Color bg_color=BG_COLOR) :
x(parser.grid_x),
y(parser.grid_y),
w(parser.grid_w),
h(parser.grid_h),
color(bg_color)
{}
Background() {}
void init();
};
class UI {
public:
Entity MAIN = 0;
unsigned long entity_count = 1;
std::unordered_map<std::type_index, EntityMap> $components;
std::unordered_map<std::type_index, std::any> $component_storages;
std::unordered_map<string, Entity> $name_ents;
shared_ptr<sf::Font> $font = nullptr;
lel::Parser $parser;
string $grid = "";
UI();
void position(int x, int y, int width, int height);
sf::Vector2f get_position();
sf::Vector2f get_size();
void layout(const string& grid);
Entity init_entity(const string& name);
Entity entity(const string& name);
Entity entity(const string& name, int id);
inline lel::CellMap& cells() {
return $parser.cells;
}
void init();
void render(sf::RenderWindow& window);
bool mouse(float x, float y, bool hover);
void click_on(const string& name, bool required=false);
void click_on(Entity slot_id);
void debug_layout(sf::RenderWindow& window);
Entity entity() { return ++entity_count; }
template <typename Comp>
size_t make_component() {
auto &storage = component_storage_for<Comp>();
size_t index;
if(!storage.free_indices.empty()) {
index = storage.free_indices.front();
storage.free_indices.pop();
} else {
storage.data.emplace_back();
index = storage.data.size() - 1;
}
return index;
}
template <typename Comp>
ComponentStorage<Comp> &component_storage_for() {
auto type_index = std::type_index(typeid(Comp));
$component_storages.try_emplace(type_index, ComponentStorage<Comp>{});
return std::any_cast<ComponentStorage<Comp> &>(
$component_storages.at(type_index));
}
template <typename Comp>
EntityMap &entity_map_for() {
return $components[std::type_index(typeid(Comp))];
}
template <typename Comp>
void set(Entity ent, Comp val) {
EntityMap &map = entity_map_for<Comp>();
if(has<Comp>(ent)) {
get<Comp>(ent) = val;
return;
}
map.insert_or_assign(ent, make_component<Comp>());
get<Comp>(ent) = val;
}
template <typename Comp>
Comp& get(Entity ent) {
EntityMap &map = entity_map_for<Comp>();
auto &storage = component_storage_for<Comp>();
auto index = map.at(ent);
return storage.data[index];
}
template <typename Comp>
Comp* get_if(Entity entity) {
EntityMap &map = entity_map_for<Comp>();
auto &storage = component_storage_for<Comp>();
if(map.contains(entity)) {
auto index = map.at(entity);
return &storage.data[index];
} else {
return nullptr;
}
}
template <typename Comp>
bool has(Entity ent) {
EntityMap &map = entity_map_for<Comp>();
return map.contains(ent);
}
template <typename Comp>
void remove(Entity ent) {
EntityMap &map = entity_map_for<Comp>();
if(map.contains(ent)) {
size_t index = map.at(ent);
component_storage_for<Comp>().free_indices.push(index);
}
map.erase(ent);
}
template <typename Comp>
void query(std::function<void(Entity, Comp &)> cb) {
EntityMap &map = entity_map_for<Comp>();
for(auto &[entity, index] : map) {
cb(entity, get<Comp>(entity));
}
}
template <typename CompA, typename CompB>
void query(std::function<void(Entity, CompA &, CompB &)> cb) {
EntityMap &map_a = entity_map_for<CompA>();
EntityMap &map_b = entity_map_for<CompB>();
for(auto &[entity, index_a] : map_a) {
if(map_b.contains(entity)) {
cb(entity, get<CompA>(entity), get<CompB>(entity));
}
}
}
template <typename Comp>
void set_init(Entity ent, Comp val) {
dbc::check(has<lel::Cell>(ent),"WRONG! slot is missing its cell?!");
auto& cell = get<lel::Cell>(ent);
val.init(cell);
set<Comp>(ent, val);
}
template <typename Comp>
void do_if(Entity ent, std::function<void(Comp &)> cb) {
if(has<Comp>(ent)) {
cb(get<Comp>(ent));
}
}
lel::Cell& cell_for(Entity ent) {
return get<lel::Cell>(ent);
}
lel::Cell& cell_for(const string& name) {
Entity ent = entity(name);
return get<lel::Cell>(ent);
}
// BUG: close could just be remove with overload
template <typename Comp>
void close(string region) {
auto ent = entity(region);
if(has<Comp>(ent)) {
remove<Comp>(ent);
}
}
template<typename T>
void render_helper(sf::RenderWindow& window, Entity ent, bool is_shape, T& target) {
sf::Shader *shader_ptr = nullptr;
if(auto shader = get_if<Effect>(ent)) {
if(shader->$active && !is_shape) {
auto ptr = shader->checkout_ptr();
ptr->setUniform("is_shape", is_shape);
// NOTE: this is needed because SFML doesn't handle shared_ptr
shader_ptr = ptr.get();
}
}
window.draw(*target, shader_ptr);
}
void show_sprite(const string& region, const string& sprite_name);
void show_text(const string& region, const wstring& content);
void show_label(const string& region, const wstring& content);
};
}

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#include "guecstra.hpp"
namespace guecs {
Clickable make_action(DinkyECS::World& target, Events::GUI event) {
return {[&, event](auto ent, auto data){
// remember that ent is passed in from the UI::mouse handler
target.send<Events::GUI>(event, ent, data);
}};
}
Clickable make_action(DinkyECS::World& target, Events::GUI event, std::any data) {
return {[&, event, data](auto ent, auto){
// remember that ent is passed in from the UI::mouse handler
target.send<Events::GUI>(event, ent, data);
}};
}
}

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#include "components.hpp"
#include "guecs.hpp"
namespace guecs {
Clickable make_action(DinkyECS::World& target, Events::GUI event);
Clickable make_action(DinkyECS::World& target, Events::GUI event, std::any data);
}

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#include "lel.hpp"
#include <fmt/core.h>
#include "dbc.hpp"
#include <numeric>
#include "lel_parser.cpp"
namespace lel {
Parser::Parser(int x, int y, int width, int height) :
grid_x(x),
grid_y(y),
grid_w(width),
grid_h(height),
cur(0, 0)
{
}
Parser::Parser() : cur(0, 0) { }
void Parser::position(int x, int y, int width, int height) {
grid_x = x;
grid_y = y;
grid_w = width;
grid_h = height;
}
void Parser::id(std::string name) {
if(name != "_") {
dbc::check(!cells.contains(name),
fmt::format("duplicate cell name {}", name));
cells.insert_or_assign(name, cur);
}
cur = {cur.col + 1, cur.row};
auto& row = grid.back();
row.push_back(name);
}
void Parser::finalize() {
size_t rows = grid.size();
int cell_height = grid_h / rows;
for(auto& row : grid) {
size_t columns = row.size();
int cell_width = grid_w / columns;
dbc::check(cell_width > 0, "invalid cell width calc");
dbc::check(cell_height > 0, "invalid cell height calc");
for(auto& name : row) {
if(name == "_") continue;
auto& cell = cells.at(name);
// ZED: getting a bit hairy but this should work
if(cell.percent) {
// when percent mode we have to take unset to 100%
if(cell.max_w == 0) cell.max_w = 100;
if(cell.max_h == 0) cell.max_h = 100;
cell.max_w *= cell_width * 0.01;
cell.max_h *= cell_height * 0.01;
} else {
if(cell.max_w == 0) cell.max_w = cell_width;
if(cell.max_h == 0) cell.max_h = cell_height;
}
cell.w = cell.expand ? std::min(cell.max_w, grid_w) : std::min(cell_width, cell.max_w);
cell.h = cell.expand ? std::min(cell.max_h, grid_h) : std::min(cell_height, cell.max_h);
dbc::check(cell.h > 0, fmt::format("invalid height cell {}", name));
dbc::check(cell.w > 0, fmt::format("invalid width cell {}", name));
cell.x = grid_x + (cell.col * cell_width);
cell.y = grid_y + (cell.row * cell_height);
// keep the midpoint since it is used a lot
cell.mid_x = std::midpoint(cell.x, cell.x + cell.w);
cell.mid_y = std::midpoint(cell.y, cell.y + cell.h);
// perform alignments
if(cell.right) cell.x += cell_width - cell.w;
if(cell.bottom) cell.y += cell_height - cell.h;
if(cell.center) {
cell.x = cell.mid_x - cell.w / 2;
cell.y = cell.mid_y - cell.h / 2;
}
}
}
}
void Parser::reset() {
cur = {0, 0};
grid.clear();
cells.clear();
}
std::optional<std::string> Parser::hit(int x, int y) {
for(auto& [name, cell] : cells) {
if((x >= cell.x && x <= cell.x + cell.w) &&
(y >= cell.y && y <= cell.y + cell.h)) {
return name;
}
}
return std::nullopt;
}
Cell center(int width, int height, Cell &parent) {
Cell copy = parent;
copy.x = parent.mid_x - width / 2;
copy.y = parent.mid_y - height / 2;
copy.w = width;
copy.h = height;
return copy;
}
}

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#pragma once
#include <string>
#include <unordered_map>
#include <optional>
#include <vector>
namespace lel {
struct Cell {
int x = 0;
int y = 0;
int w = 0;
int h = 0;
int mid_x = 0;
int mid_y = 0;
int max_w = 0;
int max_h = 0;
int col = 0;
int row = 0;
bool right = false;
bool bottom = false;
bool expand = false;
bool center = false;
bool percent = false;
Cell(int col, int row) : col(col), row(row) {}
Cell() {}
};
using Row = std::vector<std::string>;
using CellMap = std::unordered_map<std::string, Cell>;
struct Parser {
int grid_x = 0;
int grid_y = 0;
int grid_w = 0;
int grid_h = 0;
Cell cur;
std::vector<Row> grid;
CellMap cells;
Parser(int x, int y, int width, int height);
Parser();
void position(int x, int y, int width, int height);
void id(std::string name);
void reset();
bool parse(std::string input);
void finalize();
std::optional<std::string> hit(int x, int y);
};
Cell center(int width, int height, Cell &parent);
}

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#line 1 "lel_parser.rl"
#include "lel.hpp"
#include <fmt/core.h>
#include <iostream>
namespace lel {
#line 40 "lel_parser.rl"
#line 10 "lel_parser.cpp"
static const char _Parser_actions[] = {
0, 1, 1, 1, 2, 1, 3, 1,
4, 1, 5, 1, 6, 1, 9, 1,
10, 1, 11, 1, 12, 1, 13, 2,
0, 7, 2, 0, 8, 2, 4, 1,
2, 4, 5
};
static const char _Parser_key_offsets[] = {
0, 0, 4, 20, 33, 35, 39, 41,
44, 56, 61
};
static const char _Parser_trans_keys[] = {
32, 91, 9, 13, 32, 37, 40, 42,
46, 61, 94, 95, 9, 13, 60, 62,
65, 90, 97, 122, 37, 40, 42, 46,
61, 94, 95, 60, 62, 65, 90, 97,
122, 48, 57, 41, 44, 48, 57, 48,
57, 41, 48, 57, 32, 93, 95, 124,
9, 13, 48, 57, 65, 90, 97, 122,
32, 93, 124, 9, 13, 32, 91, 9,
13, 0
};
static const char _Parser_single_lengths[] = {
0, 2, 8, 7, 0, 2, 0, 1,
4, 3, 2
};
static const char _Parser_range_lengths[] = {
0, 1, 4, 3, 1, 1, 1, 1,
4, 1, 1
};
static const char _Parser_index_offsets[] = {
0, 0, 4, 17, 28, 30, 34, 36,
39, 48, 53
};
static const char _Parser_indicies[] = {
0, 2, 0, 1, 3, 4, 5, 6,
7, 9, 7, 10, 3, 8, 10, 10,
1, 4, 5, 6, 7, 9, 7, 10,
8, 10, 10, 1, 11, 1, 12, 13,
14, 1, 15, 1, 16, 17, 1, 18,
20, 19, 21, 18, 19, 19, 19, 1,
22, 23, 24, 22, 1, 25, 2, 25,
1, 0
};
static const char _Parser_trans_targs[] = {
1, 0, 2, 2, 3, 4, 3, 3,
3, 3, 8, 5, 3, 6, 5, 7,
3, 7, 9, 8, 10, 2, 9, 10,
2, 10
};
static const char _Parser_trans_actions[] = {
0, 0, 3, 0, 17, 0, 13, 5,
11, 15, 21, 19, 23, 23, 0, 19,
26, 0, 7, 0, 32, 29, 0, 9,
1, 0
};
static const int Parser_start = 1;
static const int Parser_first_final = 10;
static const int Parser_error = 0;
static const int Parser_en_main = 1;
#line 43 "lel_parser.rl"
bool Parser::parse(std::string input) {
reset();
int cs = 0;
const char *start = nullptr;
const char *begin = input.data();
const char *p = input.data();
const char *pe = p + input.size();
std::string tk;
#line 91 "lel_parser.cpp"
{
cs = Parser_start;
}
#line 54 "lel_parser.rl"
#line 94 "lel_parser.cpp"
{
int _klen;
unsigned int _trans;
const char *_acts;
unsigned int _nacts;
const char *_keys;
if ( p == pe )
goto _test_eof;
if ( cs == 0 )
goto _out;
_resume:
_keys = _Parser_trans_keys + _Parser_key_offsets[cs];
_trans = _Parser_index_offsets[cs];
_klen = _Parser_single_lengths[cs];
if ( _klen > 0 ) {
const char *_lower = _keys;
const char *_mid;
const char *_upper = _keys + _klen - 1;
while (1) {
if ( _upper < _lower )
break;
_mid = _lower + ((_upper-_lower) >> 1);
if ( (*p) < *_mid )
_upper = _mid - 1;
else if ( (*p) > *_mid )
_lower = _mid + 1;
else {
_trans += (unsigned int)(_mid - _keys);
goto _match;
}
}
_keys += _klen;
_trans += _klen;
}
_klen = _Parser_range_lengths[cs];
if ( _klen > 0 ) {
const char *_lower = _keys;
const char *_mid;
const char *_upper = _keys + (_klen<<1) - 2;
while (1) {
if ( _upper < _lower )
break;
_mid = _lower + (((_upper-_lower) >> 1) & ~1);
if ( (*p) < _mid[0] )
_upper = _mid - 2;
else if ( (*p) > _mid[1] )
_lower = _mid + 2;
else {
_trans += (unsigned int)((_mid - _keys)>>1);
goto _match;
}
}
_trans += _klen;
}
_match:
_trans = _Parser_indicies[_trans];
cs = _Parser_trans_targs[_trans];
if ( _Parser_trans_actions[_trans] == 0 )
goto _again;
_acts = _Parser_actions + _Parser_trans_actions[_trans];
_nacts = (unsigned int) *_acts++;
while ( _nacts-- > 0 )
{
switch ( *_acts++ )
{
case 0:
#line 11 "lel_parser.rl"
{tk = input.substr(start - begin, p - start); }
break;
case 1:
#line 13 "lel_parser.rl"
{}
break;
case 2:
#line 14 "lel_parser.rl"
{ grid.push_back(Row()); }
break;
case 3:
#line 15 "lel_parser.rl"
{ cur.bottom = (*p) == '.'; }
break;
case 4:
#line 16 "lel_parser.rl"
{ id(input.substr(start - begin, p - start)); }
break;
case 5:
#line 17 "lel_parser.rl"
{ cur.col = 0; cur.row++; }
break;
case 6:
#line 18 "lel_parser.rl"
{ cur.right = (*p) == '>'; }
break;
case 7:
#line 19 "lel_parser.rl"
{cur.max_w = std::stoi(tk); }
break;
case 8:
#line 20 "lel_parser.rl"
{ cur.max_h = std::stoi(tk); }
break;
case 9:
#line 21 "lel_parser.rl"
{ cur.expand = true; }
break;
case 10:
#line 22 "lel_parser.rl"
{ cur.center = true; }
break;
case 11:
#line 23 "lel_parser.rl"
{ cur.percent = true; }
break;
case 12:
#line 33 "lel_parser.rl"
{ start = p; }
break;
case 13:
#line 36 "lel_parser.rl"
{start = p;}
break;
#line 209 "lel_parser.cpp"
}
}
_again:
if ( cs == 0 )
goto _out;
if ( ++p != pe )
goto _resume;
_test_eof: {}
_out: {}
}
#line 55 "lel_parser.rl"
bool good = pe - p == 0;
if(good) {
finalize();
} else {
dbc::log("error at:");
std::cout << p;
}
return good;
}
}

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#include "lel.hpp"
#include <fmt/core.h>
#include <iostream>
namespace lel {
%%{
machine Parser;
alphtype char;
action token {tk = input.substr(start - begin, fpc - start); }
action col {}
action ltab { grid.push_back(Row()); }
action valign { cur.bottom = fc == '.'; }
action id { id(input.substr(start - begin, fpc - start)); }
action row { cur.col = 0; cur.row++; }
action align { cur.right = fc == '>'; }
action setwidth {cur.max_w = std::stoi(tk); }
action setheight { cur.max_h = std::stoi(tk); }
action expand { cur.expand = true; }
action center { cur.center = true; }
action percent { cur.percent = true; }
col = "|" $col;
ltab = "[" $ltab;
rtab = "]" $row;
valign = ("^" | ".") $valign;
expand = "*" $expand;
center = "=" $center;
percent = "%" $percent;
halign = ("<" | ">") $align;
number = digit+ >{ start = fpc; } %token;
setw = ("(" number %setwidth ("," number %setheight)? ")") ;
modifiers = (percent | center | expand | valign | halign | setw);
id = modifiers* ((alpha | '_')+ :>> (alnum | '_')*) >{start = fpc;} %id;
row = space* ltab space* id space* (col space* id space*)* space* rtab space*;
main := row+;
}%%
%% write data;
bool Parser::parse(std::string input) {
reset();
int cs = 0;
const char *start = nullptr;
const char *begin = input.data();
const char *p = input.data();
const char *pe = p + input.size();
std::string tk;
%% write init;
%% write exec;
bool good = pe - p == 0;
if(good) {
finalize();
} else {
dbc::log("error at:");
std::cout << p;
}
return good;
}
}

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# clang might need _LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
project('lel-guecs', 'cpp',
version: '0.1.0',
default_options: [
'cpp_std=c++20',
'cpp_args=-D_GLIBCXX_DEBUG=1 -D_GLIBCXX_DEBUG_PEDANTIC=1',
])
# use this for common options only for our executables
cpp_args=[]
link_args=[]
# these are passed as override_defaults
exe_defaults = [ 'warning_level=2' ]
cc = meson.get_compiler('cpp')
dependencies = []
if build_machine.system() == 'windows'
add_global_link_arguments(
'-static-libgcc',
'-static-libstdc++',
'-static',
language: 'cpp',
)
sfml_main = dependency('sfml_main')
opengl32 = cc.find_library('opengl32', required: true)
winmm = cc.find_library('winmm', required: true)
gdi32 = cc.find_library('gdi32', required: true)
dependencies += [
opengl32, winmm, gdi32, sfml_main
]
exe_defaults += ['werror=true']
elif build_machine.system() == 'darwin'
add_global_link_arguments(
language: 'cpp',
)
opengl = dependency('OpenGL')
corefoundation = dependency('CoreFoundation')
carbon = dependency('Carbon')
cocoa = dependency('Cocoa')
iokit = dependency('IOKit')
corevideo = dependency('CoreVideo')
link_args += ['-ObjC']
exe_defaults += ['werror=false']
dependencies += [
opengl, corefoundation, carbon, cocoa, iokit, corevideo
]
endif
catch2 = subproject('catch2').get_variable('catch2_with_main_dep')
fmt = subproject('fmt').get_variable('fmt_dep')
json = subproject('nlohmann_json').get_variable('nlohmann_json_dep')
freetype2 = subproject('freetype2').get_variable('freetype_dep')
flac = subproject('flac').get_variable('flac_dep')
ogg = subproject('ogg').get_variable('libogg_dep')
vorbis = subproject('vorbis').get_variable('vorbis_dep')
vorbisfile = subproject('vorbis').get_variable('vorbisfile_dep')
vorbisenc = subproject('vorbis').get_variable('vorbisenc_dep')
sfml_audio = subproject('sfml').get_variable('sfml_audio_dep')
sfml_graphics = subproject('sfml').get_variable('sfml_graphics_dep')
sfml_network = subproject('sfml').get_variable('sfml_network_dep')
sfml_system = subproject('sfml').get_variable('sfml_system_dep')
sfml_window = subproject('sfml').get_variable('sfml_window_dep')
dependencies += [
fmt, json, freetype2,
flac, ogg, vorbis, vorbisfile, vorbisenc,
sfml_audio, sfml_graphics,
sfml_network, sfml_system,
sfml_window
]
sources = [
'dbc.cpp',
'lel.cpp'
]
executable('runtests', sources + [
'tests/lel.cpp',
],
cpp_args: cpp_args,
link_args: link_args,
override_options: exe_defaults,
dependencies: dependencies + [catch2])

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rm -recurse -force coverage/*
cp *.cpp,*.hpp,*.rl builddir
. .venv/Scripts/activate
rm -recurse -force coverage
cp scripts\gcovr_patched_coverage.py .venv\Lib\site-packages\gcovr\coverage.py
gcovr -o coverage/ --html --html-details --html-theme github.dark-blue --gcov-ignore-errors all --gcov-ignore-parse-errors negative_hits.warn_once_per_file -e builddir/subprojects -e builddir -e subprojects -j 10 .
rm *.gcov.json.gz
start .\coverage\coverage_details.html

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mv .\subprojects\packagecache .
rm -recurse -force .\subprojects\,.\builddir\
mkdir subprojects
mv .\packagecache .\subprojects\
mkdir builddir
cp wraps\*.wrap subprojects\
meson setup --default-library=static --prefer-static -Db_coverage=true builddir

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#!/usr/bin/env bash
set -e
mv -f ./subprojects/packagecache .
rm -rf subprojects builddir
mkdir subprojects
mv packagecache ./subprojects/
mkdir builddir
cp wraps/*.wrap subprojects/
# on OSX you can't do this with static
meson setup -Db_coverage=true builddir

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mv .\subprojects\packagecache .
rm -recurse -force .\subprojects\,.\builddir\
mkdir subprojects
mv .\packagecache .\subprojects\
mkdir builddir
cp wraps\*.wrap subprojects\
meson setup --default-library=static --prefer-static builddir

10
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#!/usr/bin/env bash
mv -f ./subprojects/packagecache .
rm -rf subprojects builddir
mkdir subprojects
mv -f packagecache ./subprojects/ && true
mkdir builddir
cp wraps/*.wrap subprojects/
# on OSX you can't do this with static
meson setup --default-library=static --prefer-static builddir

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#include <catch2/catch_test_macros.hpp>
#include <fmt/core.h>
#include "constants.hpp"
#include "guecs.hpp"
#include "textures.hpp"
#include <fmt/xchar.h>
using namespace guecs;
TEST_CASE("prototype one gui", "[ecs-gui]") {
guecs::UI gui;
textures::init();
gui.position(0, 0, 1000, 500);
gui.layout("[test1|test2|test3][test4|_|test5]");
for(auto& [name, cell] : gui.cells()) {
auto button = gui.entity(name);
gui.set<lel::Cell>(button, cell);
gui.set<Rectangle>(button, {});
gui.set<Clickable>(button, {});
gui.set<Textual>(button, {L"whatever"});
}
gui.init();
// at this point it's mostly ready but I'd need to render it to a window real quick
sf::RenderWindow window;
window.setSize({SCREEN_WIDTH, SCREEN_HEIGHT});
gui.render(window);
window.display();
}

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#include "lel.hpp"
#include <catch2/catch_test_macros.hpp>
#include <fmt/core.h>
#include <string>
TEST_CASE("test basic ops", "[lel]") {
lel::Parser parser(0, 0, 500, 500);
bool good = parser.parse(
"[ label_1 | label3 | test1]"
"[ *(300,300)text1 | %(150)people | ^test2]"
"[ >label2 | _ | .test3]"
"[ =message | buttons | test4]");
REQUIRE(good);
for(size_t rowcount = 0; rowcount < parser.grid.size(); rowcount++) {
auto& row = parser.grid[rowcount];
for(size_t colcount = 0; colcount < row.size(); colcount++) {
auto &name = row[colcount];
if(name == "_") {
REQUIRE(!parser.cells.contains(name));
} else {
auto &cell = parser.cells.at(name);
REQUIRE(cell.row == int(rowcount));
REQUIRE(cell.col == int(colcount));
}
}
}
REQUIRE(parser.cells.size() == 11);
REQUIRE(parser.cells.at("label2").right == true);
REQUIRE(parser.cells.at("text1").expand == true);
REQUIRE(parser.cells.at("text1").w == 300);
REQUIRE(parser.cells.at("text1").h == 300);
REQUIRE(parser.cells.at("people").expand == false);
REQUIRE(parser.cells.at("message").expand == false);
REQUIRE(parser.cells.at("message").center == true);
for(auto& [name, cell] : parser.cells) {
REQUIRE(cell.w > 0);
REQUIRE(cell.h > 0);
}
auto hit = parser.hit(10, 10);
REQUIRE(*hit == "label_1");
auto nohit = parser.hit(1000, 1000);
REQUIRE(!nohit);
REQUIRE(nohit == std::nullopt);
}

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[wrap-file]
directory = Catch2-3.7.1
source_url = https://github.com/catchorg/Catch2/archive/v3.7.1.tar.gz
source_filename = Catch2-3.7.1.tar.gz
source_hash = c991b247a1a0d7bb9c39aa35faf0fe9e19764213f28ffba3109388e62ee0269c
source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/catch2_3.7.1-1/Catch2-3.7.1.tar.gz
wrapdb_version = 3.7.1-1
[provide]
catch2 = catch2_dep
catch2-with-main = catch2_with_main_dep

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[wrap-file]
directory = flac-1.4.3
source_url = https://github.com/xiph/flac/releases/download/1.4.3/flac-1.4.3.tar.xz
source_filename = flac-1.4.3.tar.xz
source_hash = 6c58e69cd22348f441b861092b825e591d0b822e106de6eb0ee4d05d27205b70
patch_filename = flac_1.4.3-2_patch.zip
patch_url = https://wrapdb.mesonbuild.com/v2/flac_1.4.3-2/get_patch
patch_hash = 3eace1bd0769d3e0d4ff099960160766a5185d391c8f583293b087a1f96c2a9c
source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/flac_1.4.3-2/flac-1.4.3.tar.xz
wrapdb_version = 1.4.3-2
[provide]
flac = flac_dep

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[wrap-file]
directory = fmt-11.0.2
source_url = https://github.com/fmtlib/fmt/archive/11.0.2.tar.gz
source_filename = fmt-11.0.2.tar.gz
source_hash = 6cb1e6d37bdcb756dbbe59be438790db409cdb4868c66e888d5df9f13f7c027f
patch_filename = fmt_11.0.2-1_patch.zip
patch_url = https://wrapdb.mesonbuild.com/v2/fmt_11.0.2-1/get_patch
patch_hash = 90c9e3b8e8f29713d40ca949f6f93ad115d78d7fb921064112bc6179e6427c5e
source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/fmt_11.0.2-1/fmt-11.0.2.tar.gz
wrapdb_version = 11.0.2-1
[provide]
fmt = fmt_dep

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[wrap-file]
directory = freetype-2.13.3
source_url = https://download.savannah.gnu.org/releases/freetype/freetype-2.13.3.tar.xz
source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/freetype2_2.13.3-1/freetype-2.13.3.tar.xz
source_filename = freetype-2.13.3.tar.xz
source_hash = 0550350666d427c74daeb85d5ac7bb353acba5f76956395995311a9c6f063289
wrapdb_version = 2.13.3-1
[provide]
freetype2 = freetype_dep
freetype = freetype_dep

13
wraps/libpng.wrap Normal file
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[wrap-file]
directory = libpng-1.6.44
source_url = https://github.com/glennrp/libpng/archive/v1.6.44.tar.gz
source_filename = libpng-1.6.44.tar.gz
source_hash = 0ef5b633d0c65f780c4fced27ff832998e71478c13b45dfb6e94f23a82f64f7c
patch_filename = libpng_1.6.44-1_patch.zip
patch_url = https://wrapdb.mesonbuild.com/v2/libpng_1.6.44-1/get_patch
patch_hash = 394b07614c45fbd1beac8b660386216a490fe12f841a1a445799b676c9c892fb
source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/libpng_1.6.44-1/libpng-1.6.44.tar.gz
wrapdb_version = 1.6.44-1
[provide]
libpng = libpng_dep

11
wraps/nlohmann_json.wrap Normal file
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[wrap-file]
directory = nlohmann_json-3.11.3
lead_directory_missing = true
source_url = https://github.com/nlohmann/json/releases/download/v3.11.3/include.zip
source_filename = nlohmann_json-3.11.3.zip
source_hash = a22461d13119ac5c78f205d3df1db13403e58ce1bb1794edc9313677313f4a9d
source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/nlohmann_json_3.11.3-1/nlohmann_json-3.11.3.zip
wrapdb_version = 3.11.3-1
[provide]
nlohmann_json = nlohmann_json_dep

13
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[wrap-file]
directory = libogg-1.3.5
source_url = https://downloads.xiph.org/releases/ogg/libogg-1.3.5.tar.xz
source_filename = libogg-1.3.5.tar.xz
source_hash = c4d91be36fc8e54deae7575241e03f4211eb102afb3fc0775fbbc1b740016705
patch_filename = ogg_1.3.5-6_patch.zip
patch_url = https://wrapdb.mesonbuild.com/v2/ogg_1.3.5-6/get_patch
patch_hash = 8be6dcd5f93bbf9c0b9c8ec1fa29810226a60f846383074ca05b313a248e78b2
source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/ogg_1.3.5-6/libogg-1.3.5.tar.xz
wrapdb_version = 1.3.5-6
[provide]
ogg = libogg_dep

14
wraps/sfml.wrap Normal file
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[wrap-git]
directory=SFML-3.0.0
url=https://github.com/SFML/SFML.git
revision=3.0.0
depth=1
method=cmake
[provide]
sfml_audio = sfml_audio_dep
sfml_graphics = sfml_graphics_dep
sfml_main = sfml_main_dep
sfml_network = sfml_network_dep
sfml_system = sfml_system_dep
sfml_window = sfml_window_dep

7
wraps/tracy.wrap Normal file
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[wrap-git]
url=https://github.com/wolfpld/tracy.git
revision=v0.11.1
depth=1
[provide]
tracy = tracy_dep

14
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[wrap-file]
directory = libvorbis-1.3.7
source_url = https://downloads.xiph.org/releases/vorbis/libvorbis-1.3.7.tar.xz
source_filename = libvorbis-1.3.7.tar.xz
source_hash = b33cc4934322bcbf6efcbacf49e3ca01aadbea4114ec9589d1b1e9d20f72954b
patch_filename = vorbis_1.3.7-4_patch.zip
patch_url = https://wrapdb.mesonbuild.com/v2/vorbis_1.3.7-4/get_patch
patch_hash = 979e22b24b16c927040700dfd8319cd6ba29bf52a14dbc66b1cb4ea60504f14a
wrapdb_version = 1.3.7-4
[provide]
vorbis = vorbis_dep
vorbisfile = vorbisfile_dep
vorbisenc = vorbisenc_dep