Added world creation menu

src/files/engine_files.cpp

@@ -4,14 +4,14 @@
 #include <sstream>
 #include "../typedefs.h"
 
-namespace filesystem = std::filesystem;
+namespace fs = std::filesystem;
 using std::string;
-using filesystem::path;
+using fs::path;
 
 path enginefs::get_screenshot_file(string ext) {
 	path folder = SCREENSHOTS_FOLDER;
-	if (!filesystem::is_directory(folder)) {
+	if (!fs::is_directory(folder)) {
-		filesystem::create_directory(folder);
+		fs::create_directory(folder);
 	}
 
 	auto t = std::time(nullptr);
@@ -23,15 +23,19 @@ path enginefs::get_screenshot_file(string ext) {
 	ss << std::put_time(&tm, format);
 	string datetimestr = ss.str();
 
-	path filename = folder/("screenshot-"+datetimestr+"."+ext);
+	path filename = folder/path("screenshot-"+datetimestr+"."+ext);
 	uint index = 0;
-	while (filesystem::exists(filename)) {
+	while (fs::exists(filename)) {
-		filename = folder/("screenshot-"+datetimestr+"-"+std::to_string(index)+"."+ext);
+		filename = folder/path("screenshot-"+datetimestr+"-"+std::to_string(index)+"."+ext);
 		index++;
 	}
 	return filename;
 }
 
 path enginefs::get_worlds_folder() {
-    return "worlds";
+    return path("worlds");
+}
+
+bool enginefs::is_world_name_used(std::string name) {
+	return fs::exists(enginefs::get_worlds_folder()/fs::u8path(name));
 }

src/files/engine_files.h

@@ -9,6 +9,7 @@
 namespace enginefs {
     extern std::filesystem::path get_screenshot_file(std::string ext);
     extern std::filesystem::path get_worlds_folder();
+    extern bool is_world_name_used(std::string name);
 }
 
 #endif // FILES_ENGINE_FILES_H_

src/frontend/gui/controls.cpp

@@ -84,8 +84,11 @@ void Button::listenAction(onaction action) {
     actions.push_back(action);
 }
 
-TextBox::TextBox(wstring text, vec4 padding) : Panel(vec2(200,32), padding, 0, false) {
+TextBox::TextBox(wstring placeholder, vec4 padding) 
-    label = new Label(text);
+    : Panel(vec2(200,32), padding, 0, false), 
+      input(L""),
+      placeholder(placeholder) {
+    label = new Label(L"");
     label->align(Align::center);
     add(shared_ptr<UINode>(label));
 }
@@ -96,20 +99,28 @@ void TextBox::drawBackground(Batch2D* batch, Assets* assets) {
     batch->color = (isfocused() ? focusedColor : (hover_ ? hoverColor : color_));
     batch->rect(coord.x, coord.y, size_.x, size_.y);
     if (!focused_ && supplier) {
-        label->text(supplier());
+        input = supplier();
+    }
+
+    if (input.empty()) {
+        label->color(vec4(0.5f));
+        label->text(placeholder);
+    } else {
+        label->color(vec4(1.0f));
+        label->text(input);
     }
 }
 
 void TextBox::typed(unsigned int codepoint) {
-    label->text(label->text() + wstring({(wchar_t)codepoint}));    
+    input += wstring({(wchar_t)codepoint});
 }
 
 void TextBox::keyPressed(int key) {
-    wstring src = label->text();
     switch (key) {
         case KEY_BACKSPACE:
-            if (src.length())
+            if (!input.empty()){
-                label->text(src.substr(0, src.length()-1));
+                input = input.substr(0, input.length()-1);
+            }
             break;
         case KEY_ENTER:
             if (consumer) {
@@ -131,3 +142,9 @@ void TextBox::textSupplier(wstringsupplier supplier) {
 void TextBox::textConsumer(wstringconsumer consumer) {
     this->consumer = consumer;
 }
+
+wstring TextBox::text() const {
+    if (input.empty())
+        return placeholder;
+    return input;
+}

src/frontend/gui/controls.h

@@ -53,10 +53,12 @@ namespace gui {
         glm::vec4 hoverColor {0.05f, 0.1f, 0.2f, 0.75f};
         glm::vec4 focusedColor {0.0f, 0.0f, 0.0f, 1.0f};
         Label* label;
+        std::wstring input;
+        std::wstring placeholder;
         wstringsupplier supplier = nullptr;
         wstringconsumer consumer = nullptr;
     public:
-        TextBox(std::wstring text, glm::vec4 padding=glm::vec4(2.0f));
+        TextBox(std::wstring placeholder, glm::vec4 padding=glm::vec4(2.0f));
 
         virtual std::shared_ptr<UINode> getAt(glm::vec2 pos, std::shared_ptr<UINode> self) override;
 
@@ -66,6 +68,7 @@ namespace gui {
         virtual void textSupplier(wstringsupplier supplier);
         virtual void textConsumer(wstringconsumer consumer);
         virtual bool isfocuskeeper() const override {return true;}
+        virtual std::wstring text() const;
     };
 }
 

src/frontend/gui/panels.cpp

@@ -35,11 +35,22 @@ void Container::act(float delta) {
         if (event.timer > event.interval) {
             event.callback();
             event.timer = fmod(event.timer, event.interval);
+            if (event.repeat > 0) {
+                event.repeat--;
+            }
         }
     }
+    intervalEvents.erase(std::remove_if(
+        intervalEvents.begin(), intervalEvents.end(),
+        [](const IntervalEvent& event) {
+            return event.repeat == 0;
+        }
+    ), intervalEvents.end());
+    
     for (auto node : nodes) {
-        if (node->visible())
+        if (node->visible()) {
             node->act(delta);
+        }
     }
 }
 
@@ -66,18 +77,23 @@ void Container::add(shared_ptr<UINode> node) {
 
 void Container::remove(shared_ptr<UINode> selected) {
     selected->setParent(nullptr);
-    nodes.erase(std::remove_if(nodes.begin(), nodes.end(), [selected](const shared_ptr<UINode> node) {
+    nodes.erase(std::remove_if(nodes.begin(), nodes.end(), 
-        return node == selected;
+        [selected](const shared_ptr<UINode> node) {
-    }), nodes.end());
+            return node == selected;
+        }
+    ), nodes.end());
     refresh();
 }
 
-void Container::listenInterval(float interval, ontimeout callback) {
+void Container::listenInterval(float interval, ontimeout callback, int repeat) {
-    intervalEvents.push_back({callback, interval, 0.0f});
+    intervalEvents.push_back({callback, interval, 0.0f, repeat});
 }
 
 Panel::Panel(vec2 size, glm::vec4 padding, float interval, bool resizing)
-    : Container(vec2(), size), padding(padding), interval(interval), resizing_(resizing) {
+    : Container(vec2(), size), 
+      padding(padding), 
+      interval(interval), 
+      resizing_(resizing) {
     color_ = vec4(0.0f, 0.0f, 0.0f, 0.75f);
 }
 
@@ -103,13 +119,13 @@ void Panel::refresh() {
             y += margin.y;
             
             float ex;
-
+            float spacex = size.x - margin.z - padding.z;
             switch (node->align()) {
                 case Align::center:
-                    ex = x + fmax(0.0f, (size.x - margin.z - padding.z) - node->size().x) / 2.0f;
+                    ex = x + fmax(0.0f, spacex - node->size().x) / 2.0f;
                     break;
                 case Align::right:
-                    ex = x + size.x - margin.z - padding.z - node->size().x;
+                    ex = x + spacex - node->size().x;
                     break;
                 default:
                     ex = x + margin.x;

src/frontend/gui/panels.h

@@ -15,6 +15,8 @@ namespace gui {
         ontimeout callback;
         float interval;
         float timer;
+        // -1 - infinity, 1 - one time event
+        int repeat;
     };
 
     enum class Orientation { vertical, horizontal };
@@ -32,7 +34,7 @@ namespace gui {
         virtual std::shared_ptr<UINode> getAt(glm::vec2 pos, std::shared_ptr<UINode> self) override;
         virtual void add(std::shared_ptr<UINode> node);
         virtual void remove(std::shared_ptr<UINode> node);
-        void listenInterval(float interval, ontimeout callback);
+        void listenInterval(float interval, ontimeout callback, int repeat=-1);
     };
 
     class Panel : public Container {

src/frontend/hud.cpp

@@ -57,23 +57,27 @@ HudRenderer::HudRenderer(Engine* engine, Level* level) : level(level), assets(en
 		fpsMax = fps;
 	});
 	panel->setCoord(vec2(10, 10));
-	panel->add(shared_ptr<Label>(create_label([this, level]() {
-		return L"chunks: "+std::to_wstring(this->level->chunks->chunksCount)+L" visible: "+std::to_wstring(level->chunks->visible);
-	})));
 	panel->add(shared_ptr<Label>(create_label([this](){
 		return L"fps: "+this->fpsString;
 	})));
+	panel->add(shared_ptr<Label>(create_label([this](){
+		return L"meshes: " + std::to_wstring(Mesh::meshesCount);
+	})));
 	panel->add(shared_ptr<Label>(create_label([this](){
 		return L"occlusion: "+wstring(this->occlusion ? L"on" : L"off");
 	})));
+	panel->add(shared_ptr<Label>(create_label([this, level]() {
+		return L"chunks: "+std::to_wstring(this->level->chunks->chunksCount)+L" visible: "+std::to_wstring(level->chunks->visible);
+	})));
 	panel->add(shared_ptr<Label>(create_label([this](){
 		std::wstringstream stream;
 		stream << std::hex << this->level->player->selectedVoxel.states;
 		return L"block-selected: "+std::to_wstring(this->level->player->selectedVoxel.id)+L" "+stream.str();
 	})));
 	panel->add(shared_ptr<Label>(create_label([this](){
-		return L"meshes: " + std::to_wstring(Mesh::meshesCount);
+		return L"seed: "+std::to_wstring(this->level->world->seed);
 	})));
+
 	for (int ax = 0; ax < 3; ax++){
 		Panel* sub = new Panel(vec2(10, 27), vec4(0.0f));
 		sub->orientation(Orientation::horizontal);

src/frontend/screens.cpp

@@ -4,6 +4,7 @@
 #include <memory>
 #include <glm/glm.hpp>
 #include <filesystem>
+#include <stdexcept>
 
 #include "../window/Camera.h"
 #include "../window/Events.h"
@@ -26,42 +27,45 @@
 #include "../files/engine_files.h"
 #include "../util/stringutil.h"
 
+using std::string;
 using std::wstring;
 using glm::vec3;
 using glm::vec4;
 using std::shared_ptr;
 using std::filesystem::path;
+using std::filesystem::u8path;
 using std::filesystem::directory_iterator;
 using namespace gui;
 
-MenuScreen::MenuScreen(Engine* engine_) : Screen(engine_) {
+                                            // Replace this ugly piece of code
+                                            // With some normal pages system
+Panel* create_main_menu_panel(Engine* engine, shared_ptr<UINode>* newWorldPanel) {
     Panel* panel = new Panel(vec2(400, 200), vec4(5.0f), 1.0f);
     panel->color(vec4(0.0f));
 	panel->setCoord(vec2(10, 10));
 
     {
         auto button = new Button(L"New World", vec4(12.0f, 10.0f, 12.0f, 10.0f));
-        button->listenAction([this, panel](GUI*) {
+        button->listenAction([engine, panel, newWorldPanel](GUI*) {
-            std::cout << "-- loading world" << std::endl;
+            panel->visible(false);
-            EngineSettings& settings = engine->getSettings();
+            (*newWorldPanel)->visible(true);
-            path folder = enginefs::get_worlds_folder()/path("world");
-            World* world = new World("world", folder, 42, settings);
-
-            auto screen = new LevelScreen(engine, world->load(settings));
-            engine->setScreen(shared_ptr<Screen>(screen));
         });
         panel->add(shared_ptr<UINode>(button));
     }
     Panel* worldsPanel = new Panel(vec2(390, 200), vec4(5.0f));
     worldsPanel->color(vec4(0.1f));
     for (auto const& entry : directory_iterator(enginefs::get_worlds_folder())) {
-        std::string name = entry.path().filename();
+        string name = entry.path().filename();
-        Button* button = new Button(util::str2wstr_utf8(name), vec4(10.0f, 8.0f, 10.0f, 8.0f));
+        Button* button = new Button(util::str2wstr_utf8(name), 
+                                    vec4(10.0f, 8.0f, 10.0f, 8.0f));
         button->color(vec4(0.5f));
-        button->listenAction([this, panel, name](GUI*) {
+        button->listenAction([engine, panel, name](GUI*) {
             EngineSettings& settings = engine->getSettings();
-            World* world = new World(name, enginefs::get_worlds_folder()/name, 42, settings);
+
-            engine->setScreen(shared_ptr<Screen>(new LevelScreen(engine, world->load(settings))));
+            auto folder = enginefs::get_worlds_folder()/name;
+            World* world = new World(name, folder, 42, settings);
+            auto screen = new LevelScreen(engine, world->load(settings));
+            engine->setScreen(shared_ptr<Screen>(screen));
         });
         worldsPanel->add(shared_ptr<UINode>(button));
     }
@@ -69,13 +73,113 @@ MenuScreen::MenuScreen(Engine* engine_) : Screen(engine_) {
     
     {
         Button* button = new Button(L"Quit", vec4(12.0f, 10.0f, 12.0f, 10.0f));
-        button->listenAction([this](GUI*) {
+        button->listenAction([](GUI*) {
             Window::setShouldClose(true);
         });
         panel->add(shared_ptr<UINode>(button));
     }
-    this->panel = shared_ptr<UINode>(panel);
+    return panel;
-    engine->getGUI()->add(this->panel);
+}
+
+Panel* create_new_world_panel(Engine* engine, shared_ptr<UINode>* mainPanel) {
+    Panel* panel = new Panel(vec2(400, 200), vec4(5.0f), 1.0f);
+    panel->color(vec4(0.0f));
+	panel->setCoord(vec2(10, 10));
+
+    TextBox* worldNameInput;
+    {
+        Label* label = new Label(L"World Name");
+        panel->add(shared_ptr<UINode>(label));
+
+        TextBox* input = new TextBox(L"New World", vec4(6.0f));
+        panel->add(shared_ptr<UINode>(input));
+        worldNameInput = input;
+    }
+
+    TextBox* seedInput;
+    {
+        Label* label = new Label(L"Seed");
+        panel->add(shared_ptr<UINode>(label));
+
+        uint64_t randseed = rand() ^ (rand() << 8) ^ 
+                        (rand() << 16) ^ (rand() << 24) ^
+                        ((uint64_t)rand() << 32) ^ ((uint64_t)rand() << 40) ^
+                        ((uint64_t)rand() << 56);
+
+        TextBox* input = new TextBox(std::to_wstring(randseed), vec4(6.0f));
+        panel->add(shared_ptr<UINode>(input));
+        seedInput = input;
+    }
+
+    {
+        Button* button = new Button(L"Create World", vec4(10.0f));
+        button->margin(vec4(0, 20, 0, 0));
+        vec4 basecolor = worldNameInput->color();   
+        button->listenAction([=](GUI*) {
+            wstring name = worldNameInput->text();
+            string nameutf8 = util::wstr2str_utf8(name);
+
+            // Basic validation
+            if (!util::is_valid_filename(name) || 
+                 enginefs::is_world_name_used(nameutf8)) {
+                // blink red two times
+                panel->listenInterval(0.1f, [worldNameInput, basecolor]() {
+                    static bool flag = true;
+                    if (flag) {
+                        worldNameInput->color(vec4(0.3f, 0.0f, 0.0f, 0.5f));
+                    } else {
+                        worldNameInput->color(basecolor);
+                    }
+                    flag = !flag;
+                }, 4);
+                return;
+            }
+
+            wstring seedstr = seedInput->text();
+            uint64_t seed;
+            if (util::is_integer(seedstr)) {
+                try {
+                    seed = std::stoull(seedstr);
+                } catch (const std::out_of_range& err) {
+                    std::hash<wstring> hash;
+                    seed = hash(seedstr);
+                }
+            } else {
+                std::hash<wstring> hash;
+                seed = hash(seedstr);
+            }
+            std::cout << "world seed: " << seed << std::endl;
+            
+            EngineSettings& settings = engine->getSettings();
+
+            auto folder = enginefs::get_worlds_folder()/u8path(nameutf8);
+            std::filesystem::create_directories(folder);
+            World* world = new World(nameutf8, folder, seed, settings);
+            auto screen = new LevelScreen(engine, world->load(settings));
+            engine->setScreen(shared_ptr<Screen>(screen));
+        });
+        panel->add(shared_ptr<UINode>(button));
+    }
+
+    {
+        Button* button = new Button(L"Back", vec4(10.0f));
+        button->listenAction([panel, mainPanel](GUI*) {
+            panel->visible(false);
+            (*mainPanel)->visible(true);
+        });
+        panel->add(shared_ptr<UINode>(button));
+    }
+
+    return panel;
+}
+
+MenuScreen::MenuScreen(Engine* engine_) : Screen(engine_) {
+    GUI* gui = engine->getGUI();
+    panel = shared_ptr<UINode>(create_main_menu_panel(engine, &newWorldPanel));
+    newWorldPanel = shared_ptr<UINode>(create_new_world_panel(engine, &panel));
+    newWorldPanel->visible(false);
+    gui->add(panel);
+    gui->add(newWorldPanel);
 
     batch = new Batch2D(1024);
     uicamera = new Camera(vec3(), Window::height);
@@ -84,7 +188,9 @@ MenuScreen::MenuScreen(Engine* engine_) : Screen(engine_) {
 }
 
 MenuScreen::~MenuScreen() {
-    engine->getGUI()->remove(panel);
+    GUI* gui = engine->getGUI();
+    gui->remove(newWorldPanel);
+    gui->remove(panel);
     delete batch;
     delete uicamera;
 }
@@ -94,6 +200,7 @@ void MenuScreen::update(float delta) {
 
 void MenuScreen::draw(float delta) {
     panel->setCoord((Window::size() - panel->size()) / 2.0f);
+    newWorldPanel->setCoord((Window::size() - newWorldPanel->size()) / 2.0f);
     
     Window::clear();
     Window::setBgColor(vec3(0.2f, 0.2f, 0.2f));
@@ -108,7 +215,7 @@ void MenuScreen::draw(float delta) {
     batch->rect(0, 0, 
                 Window::width, Window::height, 0, 0, 0, 
                 UVRegion(0, 0, Window::width/64, Window::height/64), 
-                false, false, glm::vec4(1.0f));
+                false, false, vec4(1.0f));
     batch->render();
 }
 

src/frontend/screens.h

@@ -30,6 +30,7 @@ public:
 
 class MenuScreen : public Screen {
     std::shared_ptr<gui::UINode> panel;
+    std::shared_ptr<gui::UINode> newWorldPanel;
     Batch2D* batch;
     Camera* uicamera;
 public:

src/util/stringutil.cpp

@@ -132,3 +132,21 @@ bool util::is_integer(string text) {
     }
     return true;
 }
+
+bool util::is_integer(wstring text) {
+    for (wchar_t c : text) {
+        if (c < L'0' || c > L'9')
+            return false;
+    }
+    return true;
+}
+
+bool util::is_valid_filename(std::wstring name) {
+    for (wchar_t c : name) {
+        if (c < 31 || c == '/' || c == '\\' || c == '<' || c == '>' ||
+            c == ':' || c == '"' || c == '|' || c == '?' || c == '*'){
+            return false;
+        }
+    }
+    return true;
+}

src/util/stringutil.h

@@ -13,6 +13,8 @@ namespace util {
     extern std::string wstr2str_utf8(const std::wstring ws);
     extern std::wstring str2wstr_utf8(const std::string s);
     extern bool is_integer(std::string text);
+    extern bool is_integer(std::wstring text);
+    extern bool is_valid_filename(std::wstring name);
 }
 
 #endif // UTIL_STRINGUTIL_H_

src/world/World.cpp

@@ -48,7 +48,7 @@ Level* World::load(EngineSettings& settings) {
 	seed = info.seed;
 	name = info.name;
 
-	vec3 playerPosition = vec3(0, 64, 0);
+	vec3 playerPosition = vec3(0, 100, 0);
 	Camera* camera = new Camera(playerPosition, glm::radians(90.0f));
 	Player* player = new Player(playerPosition, 4.0f, camera);
 	Level* level = new Level(this, player, settings);