world creation and generators menus moved to xml

res/layouts/pages/main.xml

@@ -1,5 +1,5 @@
 <panel size='400' color='0' interval='1' context='menu'>
-    <button onclick='menu.page="new-world"' padding='10'>@New World</button>
+    <button onclick='menu.page="new_world"' padding='10'>@New World</button>
     <panel id='worlds' size='390,1' padding='5' color='#FFFFFF11' max-length='400'>
     </panel>
     <button onclick='menu.page="settings"' padding='10'>@Settings</button>

res/layouts/pages/new_world.xml

@@ -0,0 +1,17 @@
+<panel size='400' color='0' interval='1' context='world'>
+    <label>@Name</label>
+    <textbox id='name_box' 
+             validator='world_name_validator' 
+             placeholder='New World' 
+             padding='4'>
+    </textbox>
+    <label>@Seed</label>
+    <textbox id='seed_box' placeholder='-' padding='4'></textbox>
+    <button onclick='menu.page="world_generators"' id='generator_btn' padding='10'>
+        @World generator
+    </button>
+    <button onclick='create_world()' padding='10' margin='1,20,1,1'>
+        @Create World
+    </button>
+    <button onclick='menu:back()' padding='10'>@Back</button>
+</panel>

res/layouts/pages/new_world.xml.lua

@@ -0,0 +1,35 @@
+settings = session.get_entry('new_world')
+
+function world_name_validator(name)
+    return name:match("^[%w-\\.\\ ]+$") ~= nil and not world.exists(name)
+end
+
+function settings.generator_name(id)
+    local prefix, name = parse_path(id)
+    if prefix == "core" then
+        return gui.str(name, "world.generators")
+    else
+        return id
+    end
+end
+
+function create_world()
+    if not document.name_box.valid then
+        return
+    end
+    local name = document.name_box.text
+    local seed = document.seed_box.text
+    core.new_world(name, seed, settings.generator)
+end
+
+function on_open()
+    if settings.generator == nil then
+        settings.generator = core.get_default_generator()
+    end
+    document.generator_btn.text = string.format(
+        "%s: %s", 
+        gui.str("World generator", "world"), 
+        settings.generator_name(settings.generator)
+    )
+    document.seed_box.placeholder = tostring(math.random()):sub(3)
+end

res/layouts/pages/world_generators.xml

@@ -0,0 +1,3 @@
+<panel size='400' color='#00000080' padding='8'>
+    <!-- content is generated in script -->
+</panel>

res/layouts/pages/world_generators.xml.lua

@@ -0,0 +1,16 @@
+settings = session.get_entry('new_world')
+
+function on_open()
+    local names = core.get_generators()
+    table.sort(names)
+
+    local panel = document.root
+    for _,k in ipairs(names) do
+        panel:add(gui.template("generator", {
+            callback=string.format("settings.generator=%q menu:back()", k),
+            id=k,
+            name=settings.generator_name(k)
+        }))
+    end
+    panel:add("<button padding='10' onclick='menu:back()'>@Back</button>")
+end

res/layouts/templates/generator.xml

@@ -0,0 +1,4 @@
+<container onclick='%{callback}' size='80,30' hover-color='#FFFFFF10'>
+    <label pos='80,4' size='300,25' color='#FFFFFF80' align='right'>[%{id}]</label>
+    <label pos='0,8'>%{name}</label>
+</container>

res/scripts/stdlib.lua

@@ -215,6 +215,23 @@ function gui.template(name, params)
     return text
 end
 
+session = {
+    entries={}
+}
+
+function session.get_entry(name)
+    local entry = session.entries[name]
+    if entry == nil then
+        entry = {}
+        session.entries[name] = entry
+    end
+    return entry
+end
+
+function session.reset_entry(name)
+    session.entries[name] = nil
+end
+
 -- Deprecated functions
 block_index = block.index
 block_name = block.name

res/texts/ru_RU.txt

@@ -31,7 +31,7 @@ world.Name=Название
 world.World generator=Генератор мира
 world.generators.default=Обычный
 world.generators.flat=Плоский
-menu.Create World=Создать Мир
+world.Create World=Создать Мир
 
 world.convert-request=Есть изменения в индексах! Конвертировать мир?
 world.delete-confirm=Удалить мир безвозвратно?

src/frontend/menu/menu.cpp

@@ -40,10 +40,6 @@
 namespace fs = std::filesystem;
 using namespace gui;
 
-namespace menus {
-    extern std::string generatorID;
-}
-
 void menus::create_version_label(Engine* engine) {
     auto gui = engine->getGUI();
     auto vlabel = std::make_shared<gui::Label>(
@@ -220,10 +216,7 @@ void menus::delete_world(std::string name, Engine* engine) {
 }
 
 void menus::create_menus(Engine* engine) {
-    menus::generatorID = WorldGenerators::getDefaultGeneratorID();
-    create_new_world_panel(engine);
     create_settings_panel(engine);
-    create_world_generators_panel(engine);
 
     auto menu = engine->getGUI()->getMenu();
     menu->setPageLoader([=](auto name) {
@@ -238,6 +231,4 @@ void menus::create_menus(Engine* engine) {
 }
 
 void menus::refresh_menus(Engine* engine) {
-    create_new_world_panel(engine);
-    create_world_generators_panel(engine);
 }

src/frontend/menu/menu.h

@@ -20,12 +20,6 @@ namespace menus {
     // implemented in menu_settings.cpp 
     extern void create_settings_panel(Engine* engine);
 
-    // implemented in menu_create_world.cpp
-    extern void create_new_world_panel(Engine* engine);
-
-    // implemented in menu_create_world.cpp
-    extern void create_world_generators_panel(Engine* engine);
-
     extern std::shared_ptr<gui::Panel> create_packs_panel(
         const std::vector<ContentPack>& packs, 
         Engine* engine, 
@@ -57,6 +51,13 @@ namespace menus {
         std::vector<std::string> packs
     );
 
+    void create_world(
+        Engine* engine, 
+        const std::string& name, 
+        const std::string& seedstr,
+        const std::string& generatorID
+    );
+
     /// @brief Create development version label at the top-right screen corner
     void create_version_label(Engine* engine);
     void create_menus(Engine* engine);

src/frontend/menu/menu_create_world.cpp

@@ -20,12 +20,6 @@
 
 using namespace gui;
 
-std::shared_ptr<gui::Button> generatorTypeButton;
-
-namespace menus {
-    std::string generatorID;
-}
-
 inline uint64_t randU64() {
     srand(time(NULL));
     return rand() ^ (rand() << 8) ^ 
@@ -35,96 +29,27 @@ inline uint64_t randU64() {
         ((uint64_t)rand() << 56);
 }
 
-inline uint64_t str2seed(std::wstring seedstr) {
+inline uint64_t str2seed(const std::string& seedstr) {
     if (util::is_integer(seedstr)) {
         try {
             return std::stoull(seedstr);
         } catch (const std::out_of_range& err) {
-            std::hash<std::wstring> hash;
+            std::hash<std::string> hash;
             return hash(seedstr);
         }
     } else {
-        std::hash<std::wstring> hash;
+        std::hash<std::string> hash;
         return hash(seedstr);
     }
 }
 
-static std::string translate_generator_id(std::string& id) {
-    int delimiterPosition = id.find(":");
-    std::string pack = id.substr(0, delimiterPosition);
-    std::string generator = id.substr(delimiterPosition + 1);
-
-    if(pack == "core") {
-        return util::wstr2str_utf8(langs::get(util::str2wstr_utf8(generator), L"world.generators"));
-    } else {
-        return id;
-    }
-}
-
-void menus::create_world_generators_panel(Engine* engine) {
-    auto menu = engine->getGUI()->getMenu();
-    auto panel = menus::create_page(engine, "world_generators", 400, 0.5f, 1);
-    panel->setScrollable(true);
-
-    std::vector<std::string> generatorsIDs = WorldGenerators::getGeneratorsIDs();
-    std::sort(generatorsIDs.begin(), generatorsIDs.end());
-    for (std::string& id : generatorsIDs) {
-        const std::string& fullName = translate_generator_id(id);
-        auto button = std::make_shared<Container>(glm::vec2(80, 30));
-
-        auto idlabel = std::make_shared<Label>("["+id+"]");
-        idlabel->setColor(glm::vec4(1, 1, 1, 0.5f));
-        idlabel->setSize(glm::vec2(300, 25));
-        idlabel->setAlign(Align::right);
-
-        button->add(idlabel, glm::vec2(80, 4));
-        button->add(std::make_shared<Label>(fullName), glm::vec2(0, 8));
-        button->listenAction(
-            [=](GUI*) {
-                menus::generatorID = id;
-                generatorTypeButton->setText(langs::get(L"World generator", L"world") + (L": ") + util::str2wstr_utf8(translate_generator_id(menus::generatorID)));
-                menu->back();
-            }
-        );
-        panel->add(button);
-    }
-    panel->add(guiutil::backButton(menu));
-}
-
-void menus::create_new_world_panel(Engine* engine) {
-    auto panel = menus::create_page(engine, "new-world", 400, 0.0f, 1);
-
-    panel->add(std::make_shared<Label>(langs::get(L"Name", L"world")));
-    auto nameInput = std::make_shared<TextBox>(L"New World", glm::vec4(6.0f));
-    nameInput->setTextValidator([=](const std::wstring& text) {
-        EnginePaths* paths = engine->getPaths();
-        std::string textutf8 = util::wstr2str_utf8(text);
-        return util::is_valid_filename(text) && 
-                !paths->isWorldNameUsed(textutf8);
-    });
-    panel->add(nameInput);
-
-    panel->add(std::make_shared<Label>(langs::get(L"Seed", L"world")));
-    auto seedstr = std::to_wstring(randU64());
-    auto seedInput = std::make_shared<TextBox>(seedstr, glm::vec4(6.0f));
-    panel->add(seedInput);
-    
-    generatorTypeButton = guiutil::gotoButton(
-        langs::get(L"World generator", L"world") + L": " + 
-        util::str2wstr_utf8(translate_generator_id(menus::generatorID)), 
-        "world_generators", 
-        engine->getGUI()->getMenu()
-    );
-    panel->add(generatorTypeButton);
-
-    panel->add(menus::create_button(L"Create World", glm::vec4(10), glm::vec4(1, 20, 1, 1), 
-    [=](GUI*) {
-        if (!nameInput->validate())
-            return;
-
-        std::string name = util::wstr2str_utf8(nameInput->getText());
-        uint64_t seed = str2seed(seedInput->getText());
-        std::cout << "world seed: " << seed << std::endl;
+void menus::create_world(
+    Engine* engine, 
+    const std::string& name, 
+    const std::string& seedstr,
+    const std::string& generatorID
+) {
+    uint64_t seed = str2seed(seedstr);
 
     EnginePaths* paths = engine->getPaths();
     auto folder = paths->getWorldsFolder()/fs::u8path(name);
@@ -153,16 +78,13 @@ void menus::create_new_world_panel(Engine* engine) {
     }
 
     Level* level = World::create(
-            name, menus::generatorID, folder, seed, 
+        name, generatorID, folder, seed, 
         engine->getSettings(), 
         engine->getContent(),
         engine->getContentPacks()
     );
     level->getWorld()->wfile->createDirectories();
-        menus::generatorID = WorldGenerators::getDefaultGeneratorID();
     engine->setScreen(std::make_shared<LevelScreen>(engine, level));
-    }));
-    panel->add(guiutil::backButton(engine->getGUI()->getMenu()));
 }
 
 #endif // FRONTEND_MENU_MENU_CREATE_WORLD_H_

src/frontend/menu/menu_pause.cpp

@@ -20,7 +20,7 @@
 using namespace gui;
 
 static void reopen_world(Engine* engine, World* world) {
-    std::string wname = world->wfile->getFolder().stem().u8string();
+    std::string wname = world->wfile->getFolder().filename().u8string();
     engine->setScreen(nullptr);
     engine->setScreen(std::make_shared<MenuScreen>(engine));
     menus::open_world(wname, engine, true);

src/logic/scripting/lua/libcore.cpp

@@ -8,6 +8,7 @@
 #include "../../../logic/LevelController.h"
 #include "../../../window/Events.h"
 #include "../../../window/Window.h"
+#include "../../../world/WorldGenerators.h"
 #include "../scripting.h"
 
 #include <vector>
@@ -29,6 +30,14 @@ static int l_get_worlds_list(lua_State* L) {
     return 1;
 }
 
+static int l_new_world(lua_State* L) {
+    auto name = lua_tostring(L, 1);
+    auto seed = lua_tostring(L, 2);
+    auto generator = lua_tostring(L, 3);
+    menus::create_world(scripting::engine, name, seed, generator);
+    return 0;
+}
+
 static int l_open_world(lua_State* L) {
     auto name = lua_tostring(L, 1);
     scripting::engine->setScreen(nullptr);
@@ -126,8 +135,27 @@ static int l_quit(lua_State* L) {
     return 0;
 }
 
+static int l_get_default_generator(lua_State* L) {
+    lua_pushstring(L, WorldGenerators::getDefaultGeneratorID().c_str());
+    return 1;
+}
+
+static int l_get_generators(lua_State* L) {
+    const auto& generators = WorldGenerators::getGeneratorsIDs();
+    lua_createtable(L, generators.size(), 0);
+
+    int i = 0;
+    for (auto& id : generators) {
+        lua_pushstring(L, id.c_str());
+        lua_rawseti(L, -2, i + 1);
+        i++;
+    }
+    return 1;
+}
+
 const luaL_Reg corelib [] = {
     {"get_worlds_list", lua_wrap_errors<l_get_worlds_list>},
+    {"new_world", lua_wrap_errors<l_new_world>},
     {"open_world", lua_wrap_errors<l_open_world>},
     {"close_world", lua_wrap_errors<l_close_world>},
     {"delete_world", lua_wrap_errors<l_delete_world>},
@@ -138,5 +166,7 @@ const luaL_Reg corelib [] = {
     {"set_setting", lua_wrap_errors<l_set_setting>},
     {"str_setting", lua_wrap_errors<l_str_setting>},
     {"quit", lua_wrap_errors<l_quit>},
+    {"get_default_generator", lua_wrap_errors<l_get_default_generator>},
+    {"get_generators", lua_wrap_errors<l_get_generators>},
     {NULL, NULL}
 };

src/logic/scripting/lua/libgui.cpp

@@ -120,6 +120,9 @@ static bool getattr(lua_State* L, gui::TextBox* box, const std::string& attr) {
     } else if (attr == "placeholder") {
         lua_pushstring(L, util::wstr2str_utf8(box->getPlaceholder()).c_str());
         return true;
+    } else if (attr == "valid") {
+        lua_pushboolean(L, box->validate());
+        return true;
     }
     return false;
 }

src/logic/scripting/lua/libworld.cpp

@@ -3,8 +3,12 @@
 #include "../scripting.h"
 #include "../../../world/Level.h"
 #include "../../../world/World.h"
+#include "../../../engine.h"
 
 #include <cmath>
+#include <filesystem>
+
+namespace fs = std::filesystem;
 
 static int l_world_get_total_time(lua_State* L) {
     lua_pushnumber(L, scripting::level->getWorld()->totalTime);
@@ -27,10 +31,18 @@ static int l_world_get_seed(lua_State* L) {
     return 1;
 }
 
+static int l_world_exists(lua_State* L) {
+    auto name = lua_tostring(L, 1);
+    auto worldsDir = scripting::engine->getPaths()->getWorldFolder(name);
+    lua_pushboolean(L, fs::is_directory(worldsDir));
+    return 1;
+}
+
 const luaL_Reg worldlib [] = {
     {"get_total_time", lua_wrap_errors<l_world_get_total_time>},
     {"get_day_time", lua_wrap_errors<l_world_get_day_time>},
     {"set_day_time", lua_wrap_errors<l_world_set_day_time>},
     {"get_seed", lua_wrap_errors<l_world_get_seed>},
+    {"exists", lua_wrap_errors<l_world_exists>},
     {NULL, NULL}
 };