From 4477c39524e45e491adb0e64ba4da7930d2fface Mon Sep 17 00:00:00 2001
From: zv0n <tom.zvon@gmail.com>
Date: Sun, 24 Jul 2022 20:22:45 +0200
Subject: [PATCH] Mario Editor: add option to select a level to load

---
 mario/CMakeLists.txt              |   1 +
 mario/scenes/editor_main.cpp      |  26 +--
 mario/scenes/editor_main_menu.cpp |  13 +-
 mario/scenes/editor_scenes.hpp    |   5 +-
 mario/scenes/load_scene.cpp       | 268 ++++++++++++++++++++++++++++++
 5 files changed, 301 insertions(+), 12 deletions(-)
 create mode 100644 mario/scenes/load_scene.cpp

diff --git a/mario/CMakeLists.txt b/mario/CMakeLists.txt
index b6fc679..8110c77 100644
--- a/mario/CMakeLists.txt
+++ b/mario/CMakeLists.txt
@@ -92,6 +92,7 @@ target_sources(editor
 	PRIVATE scenes/editor_main_menu.cpp
 	PRIVATE scenes/yes_no_scene.cpp
 	PRIVATE scenes/ok_scene.cpp
+	PRIVATE scenes/load_scene.cpp
         )
 
 target_compile_definitions(editor PUBLIC EDITOR)
diff --git a/mario/scenes/editor_main.cpp b/mario/scenes/editor_main.cpp
index 2f58fb8..0d50f30 100644
--- a/mario/scenes/editor_main.cpp
+++ b/mario/scenes/editor_main.cpp
@@ -13,6 +13,7 @@
 #include "../blocks/coineditorblock.hpp"
 #include <SDL2/SDL_keycode.h>
 #include <array>
+#include "../filesystem.hpp"
 
 #ifdef _WIN32
 #include "../sdlpp/SDL2/SDL2_framerate.h"
@@ -46,6 +47,8 @@
 #define MOD_WIDTH 2
 #define OVERWORLD_WIDTH 2
 
+const std::string levelsDir = "levels";
+
 struct ToolType {
     enum Value {
         BLOCK,
@@ -142,12 +145,14 @@ bool getFlag(uint64_t flag) {
 
 void saveMapCallback(void * /*UNUSED*/, Button * /*UNUSED*/) {
     std::cout << "SAVING" << std::endl;
-    saveMap("levels/" + level_name_text + ".marmap", global_vars.objects);
+    saveMap(levelsDir + FSLib::dir_divisor + level_name_text + ".marmap",
+            global_vars.objects);
 }
-
-void loadMapDialogCallback(void * /*UNUSED*/, Button * /*UNUSED*/) {
+void loadMapDialogCallback(const std::string &level_name) {
     std::cout << "LOADING" << std::endl;
+    level_name_text = level_name.substr(0, level_name.length() - 7);
     setFlag(LOAD_MAP_FLAG);
+    setFlag(TEXT_UPDATE_FLAG);
 }
 
 void updateTool() {
@@ -1023,7 +1028,7 @@ void populateWorldType(
     scene->addObject(tool_text);
 }
 
-void enableTextInput(void */*UNUSED*/, Button */*UNUSED*/) {
+void enableTextInput(void * /*UNUSED*/, Button * /*UNUSED*/) {
     setFlag(TEXT_INPUT_FLAG);
     SDL_StartTextInput();
 }
@@ -1042,11 +1047,11 @@ void openMapEditor(std::shared_ptr<SDLPP::Scene> &scene,
 
     global_vars.current_world_type = LandType::OVERWORLD;
 
-    if (filename.empty()) {
+    if (filename.empty() || !FSLib::exists(filename)) {
         loadEmptyMap(global_vars.objects, MAP_WIDTH);
     } else {
-        loadMap(scene, global_vars.mario, "test_binary.bin",
-                global_vars.objects, true, MAP_WIDTH);
+        loadMap(scene, global_vars.mario, filename, global_vars.objects, true,
+                MAP_WIDTH);
     }
 
     // map
@@ -1146,7 +1151,8 @@ void openMapEditor(std::shared_ptr<SDLPP::Scene> &scene,
 
     // level_name label
     auto level_name_label = std::make_shared<SDLPP::TextRenderer>(
-        0.1, 0.1, BLOCK_SIZE * 8, 0.05, renderer, "Level Name:", font_config, SDLPP_TEXT_LEFT);
+        0.1, 0.1, BLOCK_SIZE * 8, 0.05, renderer, "Level Name:", font_config,
+        SDLPP_TEXT_LEFT);
     level_name_label->setAlignment(SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER);
     level_name_label->setPermanent();
     scene->addObject(level_name_label);
@@ -1335,9 +1341,9 @@ void editorAdditionalRender(std::shared_ptr<SDLPP::Scene> &scene) {
         unsetFlag(UPDATE_FLAG);
     }
     if (getFlag(LOAD_MAP_FLAG)) {
-        // TODO filename
         editorScene->resetScene();
-        openMapEditor(editorScene, "test_binary.bin");
+        openMapEditor(editorScene, levelsDir + FSLib::dir_divisor +
+                                       level_name_text + ".marmap");
         unsetFlag(LOAD_MAP_FLAG);
     }
     if (getFlag(TEXT_UPDATE_FLAG)) {
diff --git a/mario/scenes/editor_main_menu.cpp b/mario/scenes/editor_main_menu.cpp
index 99e3178..584a436 100644
--- a/mario/scenes/editor_main_menu.cpp
+++ b/mario/scenes/editor_main_menu.cpp
@@ -29,6 +29,17 @@ void resumeMainMenuCallback(void * /*UNUSED*/, Button * /*UNUSED*/) {
     resumeMainMenu();
 }
 
+void loadFinished(const std::string level_name) {
+    __quit_scenes_main_menu = true;
+    loadMapDialogCallback(level_name);
+}
+
+void showLoadMenu(void */*UNUSED*/, Button */*UNUSED*/) {
+    // TODO levels
+    auto loadMenu = createLoadScene(__buttons_main_menu.back()->getRenderer(), "levels", loadFinished);
+    game_scenes.push_back(loadMenu);
+}
+
 void __updateSelectedButton_MainMenu(uint64_t new_index) {
     if (new_index != __cur_button_index_main_menu &&
         new_index != (uint64_t)-1) {
@@ -120,7 +131,7 @@ createSceneMainMenu(std::shared_ptr<SDLPP::Renderer> &renderer) {
     __buttons_main_menu.back()->setButtonIndex(__buttons_main_menu.size() - 1);
     __buttons_main_menu.emplace_back(std::make_shared<Button>(
         0.2, 0.4, 0.6, 0.1, renderer, "LOAD", default_button_theme,
-        loadMapDialogCallback, nullptr));
+        showLoadMenu, nullptr));
     __buttons_main_menu.back()->setAlignment(SDLPP::OBJ_CENTER,
                                              SDLPP::OBJ_CENTER);
     __buttons_main_menu.back()->setPermanent();
diff --git a/mario/scenes/editor_scenes.hpp b/mario/scenes/editor_scenes.hpp
index 0052c91..1a72d86 100644
--- a/mario/scenes/editor_scenes.hpp
+++ b/mario/scenes/editor_scenes.hpp
@@ -15,7 +15,7 @@ extern std::mutex render_mutex;
 extern std::vector<SceneStruct> game_scenes;
 
 void saveMapCallback(void *input, Button *caller);
-void loadMapDialogCallback(void *input, Button *caller);
+void loadMapDialogCallback(const std::string &level_name);
 
 SceneStruct createEditorScene(std::shared_ptr<SDLPP::Renderer> &renderer);
 SceneStruct
@@ -29,5 +29,8 @@ SceneStruct createYesNoScene(std::shared_ptr<SDLPP::Renderer> renderer,
 SceneStruct createOkScene(std::shared_ptr<SDLPP::Renderer> renderer,
                           const std::string &text,
                           std::function<void()> finalizer);
+SceneStruct createLoadScene(std::shared_ptr<SDLPP::Renderer> renderer,
+                            const std::string &path,
+                            std::function<void(const std::string &)> finalizer);
 
 #endif
\ No newline at end of file
diff --git a/mario/scenes/load_scene.cpp b/mario/scenes/load_scene.cpp
new file mode 100644
index 0000000..dc20f1c
--- /dev/null
+++ b/mario/scenes/load_scene.cpp
@@ -0,0 +1,268 @@
+#include "SDL2/SDL_keycode.h"
+#include "editor_scenes.hpp"
+#include "../../sdlpp/sdlpp.hpp"
+#include "../../sdlpp/sdlpp_mouse.hpp"
+#include "../global_vars.hpp"
+#include "../objectids.hpp"
+#include "../editor_visitor.hpp"
+#include "../filesystem.hpp"
+
+bool __update_scenes_load_dialog = false;
+bool __quit_scenes_load_dialog = false;
+bool __started_load_dialog = false;
+uint64_t __cur_button_index_load_dialog = -1;
+uint64_t __cur_button_index_load_dialog_down = -1;
+std::vector<std::shared_ptr<Button>> __buttons_load_dialog{};
+std::shared_ptr<SDLPP::RectangleRender> __mouse_load_dialog{};
+
+std::function<void(const std::string &)> __load_dialog_finalizer;
+std::string __selected_level_load_dialog = "";
+
+void __quitLoadDialog() {
+    __quit_scenes_load_dialog = true;
+}
+void __updateSelectedButton_LoadDialog(uint64_t new_index) {
+    if (new_index != __cur_button_index_load_dialog &&
+        new_index != (uint64_t)-1) {
+        __buttons_load_dialog[new_index]->setHighlight();
+
+        if (__cur_button_index_load_dialog != (uint64_t)-1) {
+            __buttons_load_dialog[__cur_button_index_load_dialog]
+                ->unsetHighlight();
+        }
+        __cur_button_index_load_dialog = new_index;
+    }
+}
+
+void __quitCallback_LoadDialog(void * /*UNUSED*/, Button *btn) {
+    __selected_level_load_dialog = btn->getText();
+    __quitLoadDialog();
+}
+
+void __moveButtons(double movement) {
+    for (auto &button : __buttons_load_dialog) {
+        button->setPos(button->getPos() + SDLPP::Vec2D<double>(0, movement));
+    }
+    __update_scenes_load_dialog = true;
+}
+
+void __selectUpperButton() {
+    if (__cur_button_index_load_dialog > 0) {
+        __updateSelectedButton_LoadDialog(__cur_button_index_load_dialog - 1);
+        if (__buttons_load_dialog[__cur_button_index_load_dialog]
+                ->getPos()
+                .getY() < 0.49) {
+            __moveButtons(0.25);
+        }
+    }
+}
+
+void __selectLowerButton() {
+    if (__cur_button_index_load_dialog < __buttons_load_dialog.size() - 1) {
+        __updateSelectedButton_LoadDialog(__cur_button_index_load_dialog + 1);
+        auto pos =
+            __buttons_load_dialog[__cur_button_index_load_dialog]->getPos();
+        if (__buttons_load_dialog[__cur_button_index_load_dialog]
+                ->getPos()
+                .getY() > 0.99) {
+            __moveButtons(-0.25);
+        }
+    }
+}
+
+void __handleKeyUp_LoadDialog(SDL_Keycode key, SDLPP::Scene & /*UNUSED*/) {
+    switch (key) {
+    case SDLK_ESCAPE:
+        __selected_level_load_dialog = "";
+        __quitLoadDialog();
+        break;
+    case SDLK_RETURN:
+        __buttons_load_dialog[__cur_button_index_load_dialog]
+            ->performFunction();
+        break;
+    case SDLK_UP:
+    case SDLK_w:
+        __selectUpperButton();
+        break;
+    case SDLK_DOWN:
+    case SDLK_s:
+        __selectLowerButton();
+        break;
+    default:
+        break;
+    }
+}
+
+void addLevelButton(const std::string &path, const std::string &file,
+                    double &start_height, const int initial_path_len,
+                    std::shared_ptr<SDLPP::Renderer> &renderer,
+                    ButtonConfig &button_theme) {
+    if (FSLib::isDirectory(path + FSLib::dir_divisor + file)) {
+        for (const auto &file_rec :
+             FSLib::Directory(path + FSLib::dir_divisor + file)) {
+            addLevelButton(path + FSLib::dir_divisor + file, file_rec,
+                           start_height, initial_path_len, renderer,
+                           button_theme);
+        }
+    } else {
+        __buttons_load_dialog.emplace_back(std::make_shared<Button>(
+            0.3, start_height, 0.4, 0.2, renderer,
+            (path + FSLib::dir_divisor + file).substr(initial_path_len),
+            button_theme, __quitCallback_LoadDialog, nullptr));
+        __buttons_load_dialog.back()->setAlignment(SDLPP::OBJ_CENTER,
+                                                   SDLPP::OBJ_CENTER);
+        __buttons_load_dialog.back()->setPermanent();
+        __buttons_load_dialog.back()->setButtonIndex(
+            __buttons_load_dialog.size() - 1);
+        start_height += 0.25;
+    }
+}
+
+std::shared_ptr<SDLPP::Scene>
+createSceneLoadDialog(std::shared_ptr<SDLPP::Renderer> &renderer,
+                      const std::string &path) {
+    auto scene = std::make_shared<SDLPP::Scene>(renderer);
+    auto bg = std::make_shared<SDLPP::RectangleRender>(0, 0, 10, 10, renderer,
+                                                       "#000000BB", true);
+    bg->setPermanent();
+    bg->setId(1);
+    scene->addObject(bg);
+    __mouse_load_dialog =
+        std::make_shared<SDLPP::RectangleRender>(0.01, 0.01, 0, 0, renderer);
+    __mouse_load_dialog->setMinWidth(1);
+    __mouse_load_dialog->setMinHeight(1);
+    __mouse_load_dialog->setAlignment(SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER);
+    __mouse_load_dialog->setId(EDITOR_MOUSE_ID);
+    __mouse_load_dialog->setColiderColor("#00FF00");
+    __mouse_load_dialog->addCollision(SDLPP::RectColider({ 0, 0 }, { 1, 1 }));
+    scene->addObject(__mouse_load_dialog);
+
+    ButtonConfig default_button_theme{};
+    default_button_theme.bg_color = "#FFFFFF88";
+    default_button_theme.bg_color_highlight = "#FFFFFFBB";
+    default_button_theme.bg_color_disabled = "#AAAAAA88";
+    default_button_theme.font_color = "#000000";
+    default_button_theme.font_color_highlight = "#000000";
+    default_button_theme.font_color_disabled = "#555555";
+    default_button_theme.font_outline_color = "#FFFFFF88";
+    default_button_theme.font_outline_color_highlight = "#FFFFFFAA";
+    default_button_theme.font_outline_color_disabled = "#787878";
+    default_button_theme.outline = 0.1;
+    // buttons
+    double start_height = 0.5;
+    for (const auto &file : FSLib::Directory(path)) {
+        addLevelButton(path, file, start_height, path.length() + 1, renderer,
+                       default_button_theme);
+    }
+    for (auto &button : __buttons_load_dialog) {
+        scene->addObject(button);
+    }
+    auto font_config = std::make_shared<SDLPP::FontConfiguration>(
+        g_text_config->getFont(), "#000000", "#282828", 0.05);
+    auto dialog_text = std::make_shared<SDLPP::TextRenderer>(
+        0.1, 0.15, 0.8, 0.3, renderer, "LEVELS", font_config,
+        SDLPP_TEXT_CENTER);
+    dialog_text->setAlignment(SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER);
+    dialog_text->setPermanent();
+    scene->addObject(dialog_text);
+    return scene;
+}
+
+void __resetGlobals_LoadDialog() {
+    __update_scenes_load_dialog = false;
+    __quit_scenes_load_dialog = false;
+    __started_load_dialog = false;
+    __cur_button_index_load_dialog = -1;
+    __cur_button_index_load_dialog_down = -1;
+    __buttons_load_dialog.clear();
+    __mouse_load_dialog.reset();
+    __selected_level_load_dialog = "";
+}
+
+void __additionalRender_LoadDialog(std::shared_ptr<SDLPP::Scene> & /*UNUSED*/) {
+    if (__update_scenes_load_dialog) {
+        for (auto &_scene : game_scenes) {
+            _scene.scene->updateSizeAndPosition();
+        }
+        if (__started_load_dialog) {
+            __update_scenes_load_dialog = false;
+        } else {
+            __started_load_dialog = true;
+        }
+    }
+    if (__quit_scenes_load_dialog) {
+        __load_dialog_finalizer(__selected_level_load_dialog);
+        game_scenes.pop_back();
+        __resetGlobals_LoadDialog();
+    }
+}
+
+void __getMousePositionFlags_LoadDialog(SDLPP::Scene &scene) {
+    auto mouse = scene.getObjects({ EDITOR_MOUSE_ID })[0];
+    // move mouse colider to mouse position
+    mouse->setPos(SDLPP::Mouse::getMousePositionDouble(
+        scene.getRenderer(), SDLPP::OBJ_CENTER, SDLPP::OBJ_CENTER));
+
+    MouseVisitor visitor;
+    scene.visitCollisions(*mouse, visitor);
+    __updateSelectedButton_LoadDialog(visitor.getCurButton());
+    //__cur_button_index_load_dialog = visitor.getCurButton();
+}
+
+void __pollEvents_LoadDialog(std::shared_ptr<SDLPP::Scene> &scene) {
+    SDL_Event event;
+    while (SDLPP::getSDLEvent(event)) {
+        switch (event.type) {
+        case SDL_QUIT:
+            __quitLoadDialog();
+            break;
+        case SDL_KEYUP:
+            __handleKeyUp_LoadDialog(event.key.keysym.sym, *scene);
+            break;
+        case SDL_WINDOWEVENT:
+            if (event.window.event == SDL_WINDOWEVENT_RESIZED) {
+                __update_scenes_load_dialog = true;
+            }
+            break;
+        case SDL_MOUSEMOTION:
+            __getMousePositionFlags_LoadDialog(*scene);
+            break;
+        case SDL_MOUSEBUTTONUP:
+            if (__cur_button_index_load_dialog_down ==
+                    __cur_button_index_load_dialog &&
+                __cur_button_index_load_dialog != (uint64_t)-1) {
+                __buttons_load_dialog[__cur_button_index_load_dialog]
+                    ->performFunction();
+            }
+            break;
+        case SDL_MOUSEBUTTONDOWN:
+            // store current mouse flags in previous mouse flags
+            __cur_button_index_load_dialog_down =
+                __cur_button_index_load_dialog;
+            break;
+        case SDL_MOUSEWHEEL:
+            if (event.wheel.y > 0) {
+                __moveButtons(-0.02);
+            } else if (event.wheel.y < 0) {
+                __moveButtons(0.02);
+            }
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+SceneStruct
+createLoadScene(std::shared_ptr<SDLPP::Renderer> renderer,
+                const std::string &path,
+                std::function<void(const std::string &)> finalizer) {
+    __load_dialog_finalizer = finalizer;
+    SceneStruct ret{};
+    ret.scene = createSceneLoadDialog(renderer, path);
+    ret.additionalRender = __additionalRender_LoadDialog;
+    ret.doInput = __pollEvents_LoadDialog;
+    __update_scenes_load_dialog = true;
+    __updateSelectedButton_LoadDialog(0);
+    return ret;
+}
\ No newline at end of file