[Add] Beginning of login UI and db persistance.

CMakeLists.txt

@@ -1,11 +1,12 @@
 cmake_minimum_required(VERSION 3.16)
-project(bettola CXX)
+project(bettola CXX C)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+# === Sol2 ===
 include(FetchContent)
 FetchContent_Declare(
   sol2
@@ -14,6 +15,7 @@ FetchContent_Declare(
 )
 FetchContent_MakeAvailable(sol2)
 
+# === Asio ===
 FetchContent_Declare(
   asio
   GIT_REPOSITORY https://github.com/chriskohlhoff/asio
@@ -21,6 +23,33 @@ FetchContent_Declare(
 )
 FetchContent_MakeAvailable(asio)
 
+# === SQLite ===
+# Supress the developer warning for using Populate with declared content.
+# We need it because sqlite zip isn't a CMAKE project.
+cmake_policy(SET CMP0169 OLD)
+FetchContent_Declare(
+  sqlite_source
+  URL https://sqlite.org/2025/sqlite-amalgamation-3500400.zip
+  URL_HASH SHA256=1d3049dd0f830a025a53105fc79fd2ab9431aea99e137809d064d8ee8356b032
+  DOWNLOAD_EXTRACT_TIMESTAMP true
+)
+FetchContent_GetProperties(sqlite_source)
+if(NOT sqlite_source_POPULATED)
+  FetchContent_Populate(sqlite_source)
+  add_library(sqlite STATIC "${sqlite_source_SOURCE_DIR}/sqlite3.c")
+  target_include_directories(sqlite PUBLIC "${sqlite_source_SOURCE_DIR}")
+endif()
+# Revert policy to default.
+cmake_policy(SET CMP0169 NEW)
+
+# === sqlite_modern_cpp (SQLite wrapper) ===
+FetchContent_Declare(
+  sqlite_modern_cpp
+  GIT_REPOSITORY https://github.com/SqliteModernCpp/sqlite_modern_cpp.git
+  GIT_TAG v3.2
+)
+FetchContent_MakeAvailable(sqlite_modern_cpp)
+
 add_subdirectory(common)
 add_subdirectory(client)
 add_subdirectory(server)

client/src/game_state.cpp

@@ -13,6 +13,7 @@
 #include "ui/i_window_content.h"
 #include "ui/ui_window.h"
 #include "ui/editor.h"
+#include "ui/login_screen.h"
 #include <SDL3/SDL_events.h>
 #include <ui/main_menu.h>
 #include <ui/boot_sequence.h>
@@ -91,6 +92,11 @@ void GameState::handle_event(SDL_Event* event, int screen_width, int screen_heig
       _main_menu->handle_event(event);
     }
     break;
+  case Screen::LOGIN:
+    if(_login_screen) {
+      _login_screen->handle_event(event);
+    }
+    break;
   case Screen::BOOTING:
     /* TODO: */
     break;
@@ -116,12 +122,25 @@ void GameState::update(float dt, int draw_calls, int shape_verts, int text_verts
       _current_screen = next_screen;
       _main_menu.reset(); /* Free mem. */
 
-      if(_current_screen == Screen::BOOTING) {
+      if(_current_screen == Screen::LOGIN) {
-        _boot_sequence = std::make_unique<BootSequence>();
+        _login_screen = std::make_unique<LoginScreen>(_screen_width, _screen_height);
       }
     }
     break;
   }
+  case Screen::LOGIN:
+    if(_login_screen && _login_screen->is_login_attempted()) {
+      /* TODO: Send credentials to server for verification. */
+      printf("Login attempt: user=%s, pass=%s, host=%s\n",
+            _login_screen->get_username().c_str(),
+            _login_screen->get_password().c_str(),
+            _login_screen->get_hostname().c_str());
+
+      _current_screen = Screen::BOOTING;
+      _login_screen.reset(); /* Free mem. */
+      _boot_sequence = std::make_unique<BootSequence>();
+    }
+    break;
   case Screen::BOOTING: {
     if(!_boot_sequence) break; /* Shouldn't happen. */
     if(_boot_sequence->is_finished()) {
@@ -219,6 +238,11 @@ void GameState::render(const RenderContext& context) {
       _main_menu->render(context.ui_renderer);
     }
     break;
+  case Screen::LOGIN:
+    if(_login_screen) {
+      _login_screen->render(context);
+    }
+    break;
   case Screen::BOOTING:
     if(_boot_sequence) {
       _boot_sequence->render(context.ui_renderer);

client/src/game_state.h

@@ -7,6 +7,7 @@
 class DebugOverlay;
 class ClientNetwork;
 class Desktop;
+class LoginScreen;
 class BootSequence;
 class MainMenu;
 class ShapeRenderer;
@@ -14,6 +15,7 @@ class TextRenderer;
 union SDL_Event;
 
 enum class Screen {
+  LOGIN,
   MAIN_MENU,
   BOOTING,
   DESKTOP
@@ -34,6 +36,7 @@ private:
   std::unique_ptr<ClientNetwork>  _network;
   std::unique_ptr<Desktop>        _desktop;
   std::unique_ptr<BootSequence>   _boot_sequence;
+  std::unique_ptr<LoginScreen>    _login_screen;
   std::unique_ptr<MainMenu>       _main_menu;
   std::unique_ptr<DebugOverlay>   _debug_overlay;
   bool                            _show_debug_overlay;

client/src/main.cpp

@@ -6,6 +6,8 @@
 #include <SDL3/SDL_keyboard.h>
 #include <SDL3/SDL_timer.h>
 
+#include "db/db.h"
+
 #include "gfx/shape_renderer.h"
 #include "gfx/txt_renderer.h"
 #include "game_state.h"

client/src/ui/login_screen.cpp

@@ -0,0 +1,149 @@
+#include <string>
+#include <vector>
+
+#include "gfx/types.h"
+#include "ui/ui_renderer.h"
+#include "ui/login_screen.h"
+
+LoginScreen::LoginScreen(int screen_width, int screen_height) 
+    : _screen_width(screen_width), _screen_height(screen_height) {}
+
+LoginScreen::~LoginScreen(void) {}
+
+void LoginScreen::update(float dt) {
+  /* TODO: */
+}
+
+void LoginScreen::render(const RenderContext& context) const {
+  UIRenderer* ui_renderer = context.ui_renderer;
+
+  /* Colours. */
+  const Color text_color          = { 0.8f,   0.8f,   0.8f  };
+  const Color inactive_box_color  = { 0.1f,   0.1f,   0.15f };
+  const Color active_box_color    = { 0.15f,  0.15f,  0.2f  };
+  const Color warning_color       = { 0.7f,   0.3f,   0.3f  };
+
+  /* Layout. */
+  const int box_width   = 300;
+  const int box_height  = 30;
+  const int center_x    = (_screen_width - box_width) / 2;
+  const int start_y     = _screen_height / 2 - 100;
+
+  const Rect username_rect = { center_x, start_y+40,  box_width, box_height };
+  const Rect password_rect = { center_x, start_y+100, box_width, box_height };
+  const Rect hostname_rect = { center_x, start_y+160, box_width, box_height };
+
+  ui_renderer->begin_shapes();
+  ui_renderer->begin_text();
+
+  /* Draw title. */
+  const char* title = _is_new_account ? "Create Account" : "Login";
+  float title_width = ui_renderer->get_text_renderer()->get_text_width(title, 1.0f);
+  ui_renderer->render_text(title, (_screen_width-title_width)/2, start_y, text_color);
+
+  /* Draw input boxes and labels. */
+  /* Username */
+  ui_renderer->render_text("Username", username_rect.x, username_rect.y-5, text_color);
+  ui_renderer->draw_rect(username_rect.x, username_rect.y, username_rect.w, username_rect.h,
+                         _active_field == 0 ? active_box_color : inactive_box_color);
+  ui_renderer->render_text(_username_input.c_str(), username_rect.x+10, username_rect.y+20, text_color);
+  if(_active_field == 0 && context.show_cursor) {
+    float cursor_x = username_rect.x + 10 +
+      ui_renderer->get_text_renderer()->get_text_width(_username_input.c_str(), 1.0f);
+    ui_renderer->draw_rect((int)cursor_x, username_rect.y+5, 2, 20, text_color);
+  }
+
+  /* Password. */
+  ui_renderer->render_text("Password", password_rect.x, password_rect.y-5, text_color);
+  ui_renderer->draw_rect(password_rect.x, password_rect.y, password_rect.w, password_rect.h,
+                         _active_field == 1 ? active_box_color : inactive_box_color);
+  ui_renderer->render_text(_password_input.c_str(), password_rect.x+10, password_rect.y+20, text_color);
+  if(_active_field == 1 && context.show_cursor) {
+    float cursor_x = password_rect.x + 10 +
+      ui_renderer->get_text_renderer()->get_text_width(_password_input.c_str(), 1.0f);
+    ui_renderer->draw_rect((int)cursor_x, password_rect.y+5, 2, 20, text_color);
+  }
+
+  /* Hostname (only for new account). */
+  if(_is_new_account) {
+    ui_renderer->render_text("Hostname", hostname_rect.x, hostname_rect.y-5, text_color);
+    ui_renderer->draw_rect(hostname_rect.x, hostname_rect.y, hostname_rect.w, hostname_rect.h,
+                           _active_field == 2 ? active_box_color : inactive_box_color);
+    ui_renderer->render_text(_hostname_input.c_str(), hostname_rect.x+10, hostname_rect.y+20, text_color);
+    if(_active_field == 2 && context.show_cursor) {
+      float cursor_x = hostname_rect.x + 10 +
+        ui_renderer->get_text_renderer()->get_text_width(_hostname_input.c_str(), 1.0f);
+      ui_renderer->draw_rect((int)cursor_x, hostname_rect.y+5, 2, 20, text_color);
+    }
+  }
+
+  /* Draw the security warning. */
+  const char* warning_title = "Security Warning";
+  float warning_title_width = ui_renderer->get_text_renderer()->get_text_width(warning_title, 1.0f);
+  ui_renderer->render_text(warning_title, (_screen_width-warning_title_width)/2,
+                           _screen_height-120, warning_color);
+  const std::vector<std::string> warning_lines = {
+    "Passwords in Bettola are stored in plain text by design.",
+    "Players, can, and will attempt to obtain your password.",
+    "DO NOT use a password you have used for any other game or service.",
+    "Use a unique, throwaway password for this game only!"
+  };
+  for(size_t i = 0; i < warning_lines.size(); ++i) {
+    const std::string& line = warning_lines[i];
+    float line_width = ui_renderer->get_text_renderer()->get_text_width(line.c_str(), 1.0f);
+    ui_renderer->render_text(line.c_str(), (_screen_width-line_width)/2, 
+                             _screen_height-100+(i*20), warning_color);
+  }
+
+  ui_renderer->flush_shapes();
+  ui_renderer->flush_text();
+}
+
+void LoginScreen::handle_event(const SDL_Event* event) {
+  if(event->type == SDL_EVENT_TEXT_INPUT) {
+    /* Append character to active input string. */
+    switch(_active_field) {
+      case 0: _username_input += event->text.text; break;
+      case 1: _password_input += event->text.text; break;
+      case 2: if(_is_new_account) { _hostname_input += event->text.text; } break;
+    }
+  } else if(event->type == SDL_EVENT_KEY_DOWN) {
+    if(event->key.key == SDLK_BACKSPACE) {
+      /* Handle backspace. */
+      switch(_active_field) {
+        case 0: if(!_username_input.empty()) { _username_input.pop_back(); } break;
+        case 1: if(!_password_input.empty()) { _password_input.pop_back(); } break;
+        case 2: if(_is_new_account && !_hostname_input.empty()) {
+          _hostname_input.pop_back();
+        }
+        break;
+      }
+    } else if(event->key.key == SDLK_TAB) {
+      /* Tab to switch fields. */
+      int num_fields = _is_new_account ? 3 : 2;
+      _active_field = (_active_field+1) % num_fields;
+    } else if(event->key.key == SDLK_RETURN) {
+      _login_attempted = true;
+    }
+  } else if(event->type == SDL_EVENT_MOUSE_BUTTON_DOWN) {
+    /* Handle mouse clicks. */
+    int mouse_x = event->button.x;
+    int mouse_y = event->button.y;
+
+    /* Recalculate rects to check for clicks. */
+    const int box_width = 300;
+    const int start_y = _screen_height / 2 - 100;
+    const int center_x = (_screen_width - box_width) / 2;
+
+    const Rect username_rect = { center_x, start_y+40,  box_width, 30 };
+    const Rect password_rect = { center_x, start_y+100, box_width, 30 };
+    const Rect hostname_rect = { center_x, start_y+160, box_width, 30 };
+
+    if(mouse_y >= username_rect.y && mouse_y <= username_rect.y + username_rect.h)
+      _active_field = 0;
+    else if(mouse_y >= password_rect.y && mouse_y <= password_rect.y + password_rect.h)
+      _active_field = 1;
+    else if(_is_new_account && (mouse_y >= hostname_rect.y && mouse_y <= hostname_rect.y + hostname_rect.h))
+      _active_field = 2;
+  }
+}

client/src/ui/login_screen.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <SDL3/SDL.h>
+#include <string>
+
+#include "gfx/types.h"
+
+class LoginScreen {
+public:
+  LoginScreen(int screen_width, int screen_height);
+  ~LoginScreen(void);
+
+  void update(float dt);
+  void render(const RenderContext& context) const;
+  void handle_event(const SDL_Event* event);
+
+  bool is_login_attempted(void)  const { return _login_attempted; }
+  std::string get_username(void) const { return _username_input; }
+  std::string get_password(void) const { return _password_input; }
+  std::string get_hostname(void) const { return _hostname_input; }
+
+private:
+  /* UI State. */
+  std::string _username_input;
+  std::string _password_input;
+  std::string _hostname_input;
+
+  bool _login_attempted   = false;
+  bool _is_new_account    = true;
+  int _active_field       = 0; /* 0: username, 1: password, 2: hostname. */
+
+  /* Screen dimensions. */
+  int _screen_width;
+  int _screen_height;
+};

client/src/ui/main_menu.cpp

@@ -42,14 +42,14 @@ MainMenu::MainMenu(int screen_width, int screen_height) :
   _buttons.push_back({
     "Single-Player",
     { center_x, center_y + 30, button_width, button_height },
-    Screen::BOOTING, /* This will trigger the booting screen. */
+    Screen::LOGIN, /* This will trigger the login screen. */
     true,
     false
   });
   _buttons.push_back({
     "Online",
     { center_x, center_y - 30, button_width, button_height },
-    Screen::BOOTING,
+    Screen::LOGIN,
     false,
     false
   });

common/CMakeLists.txt

@@ -6,9 +6,11 @@ add_library(bettola
   ${BETTOLA_SOURCES}
 )
 
-target_link_libraries(bettola PUBLIC ${LUA_LIBRARIES} sol2)
+target_link_libraries(bettola PUBLIC ${LUA_LIBRARIES} sol2 sqlite)
 
 target_include_directories(bettola PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src
   ${LUA_INCLUDE_DIR}
-  ${asio_SOURCE_DIR}/asio/include)
+  ${asio_SOURCE_DIR}/asio/include
+  ${sqlite_modern_cpp_SOURCE_DIR}/hdr
+)
 

common/src/db/db.h

@@ -0,0 +1,3 @@
+#pragma once
+
+#include <sqlite_modern_cpp.h>