20 files changed, 416 insertions, 6 deletions

diff --git a/mwe/events/include/event.h b/mwe/events/include/event.h
index ee1bf52..e1b220b 100644
--- a/mwe/events/include/event.h
+++ b/mwe/events/include/event.h
@@ -148,7 +148,7 @@ private:
 };
 class ShutDownEvent : public Event {
 public:
-	ShutDownEvent() : Event("ShutDownEvent") {};
+	ShutDownEvent() : Event("ShutDownEvent"){};
 
 	REGISTER_EVENT_TYPE(ShutDownEvent)
 
diff --git a/readme.md b/readme.md
index d309b30..984a368 100644
--- a/readme.md
+++ b/readme.md
@@ -60,6 +60,7 @@ Then, follow these steps for each library you want to install:
    $ cd lib/googletest
    $ cd lib/sdl2
    $ cd lib/soloud/contrib
+   $ cd lib/sdl_ttf
    $ cd lib/sdl_image
    $ cd lib/sdl_ttf
    $ cd lib/whereami
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 97b21f0..696856c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -9,10 +9,12 @@ project(crepe C CXX)
 
 find_package(SDL2 REQUIRED)
 find_package(SDL2_image REQUIRED)
+find_package(SDL2_ttf REQUIRED)
 find_package(SoLoud REQUIRED)
 find_package(GTest REQUIRED)
 find_package(whereami REQUIRED)
 find_library(BERKELEY_DB db)
+find_library(FONTCONFIG_LIB fontconfig)
 
 add_library(crepe SHARED)
 add_executable(test_main EXCLUDE_FROM_ALL)
@@ -24,9 +26,11 @@ target_include_directories(crepe
 target_link_libraries(crepe
 	PRIVATE soloud
 	PUBLIC SDL2
+	PUBLIC SDL2_ttf
 	PUBLIC SDL2_image
 	PUBLIC ${BERKELEY_DB}
 	PUBLIC whereami
+	PUBLIC ${FONTCONFIG_LIB}
 )
 
 add_subdirectory(crepe)
diff --git a/src/crepe/api/CMakeLists.txt b/src/crepe/api/CMakeLists.txt
index 8f84f06..e8d6f92 100644
--- a/src/crepe/api/CMakeLists.txt
+++ b/src/crepe/api/CMakeLists.txt
@@ -20,6 +20,7 @@ target_sources(crepe PUBLIC
 	Button.cpp
 	UIObject.cpp
 	AI.cpp
+	Text.cpp
 	Scene.cpp
 )
 
@@ -51,4 +52,5 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES
 	Button.h
 	UIObject.h
 	AI.h
+	Text.h
 )
diff --git a/src/crepe/api/Config.h b/src/crepe/api/Config.h
index ed1cf38..6b9e3ca 100644
--- a/src/crepe/api/Config.h
+++ b/src/crepe/api/Config.h
@@ -76,6 +76,17 @@ struct Config final {
 		 */
 		std::string root_pattern = ".crepe-root";
 	} asset;
+	//! Default font options
+	struct {
+		/**
+		 * \brief Default font size
+		 *
+		 * Using the SDL_ttf library the font size needs to be set when loading the font. 
+		 * This config option is the font size at which all fonts will be loaded initially.
+		 * 
+		 */
+		unsigned int size = 16;
+	} font;
 	//! Configuration for click tolerance.
 	struct {
 		//! The maximum number of pixels the mouse can move between MouseDown and MouseUp events to be considered a click.
diff --git a/src/crepe/api/LoopManager.h b/src/crepe/api/LoopManager.h
index 40e6b38..1d23cbf 100644
--- a/src/crepe/api/LoopManager.h
+++ b/src/crepe/api/LoopManager.h
@@ -72,6 +72,8 @@ private:
 	//! Global context
 	Mediator mediator;
 
+	//! SDLContext instance
+	SDLContext sdl_context{mediator};
 	//! Component manager instance
 	ComponentManager component_manager{mediator};
 	//! Scene manager instance
@@ -84,8 +86,6 @@ private:
 	ResourceManager resource_manager{mediator};
 	//! Save manager instance
 	SaveManager save_manager{mediator};
-	//! SDLContext instance
-	SDLContext sdl_context{mediator};
 
 private:
 	/**
diff --git a/src/crepe/api/Text.cpp b/src/crepe/api/Text.cpp
new file mode 100644
index 0000000..58dc6c6
--- /dev/null
+++ b/src/crepe/api/Text.cpp
@@ -0,0 +1,14 @@
+#include "../facade/FontFacade.h"
+
+#include "Text.h"
+
+using namespace crepe;
+
+Text::Text(game_object_id_t id, const vec2 & dimensions, const vec2 & offset,
+		   const std::string & font_family, const Data & data, const std::string & text,
+		   std::optional<Asset> font)
+	: UIObject(id, dimensions, offset),
+	  text(text),
+	  data(data),
+	  font_family(font_family),
+	  font(font) {}
diff --git a/src/crepe/api/Text.h b/src/crepe/api/Text.h
new file mode 100644
index 0000000..92cca18
--- /dev/null
+++ b/src/crepe/api/Text.h
@@ -0,0 +1,67 @@
+#pragma once
+
+#include <optional>
+#include <string>
+
+#include "../Component.h"
+
+#include "Asset.h"
+#include "Color.h"
+#include "UIObject.h"
+
+namespace crepe {
+/**
+ * \brief Text UIObject component for displaying text
+ * 
+ * This class can be used to display text on screen. By setting the font_family to a font already stored on the current device it will automatically be loaded in.
+ */
+class Text : public UIObject {
+public:
+	//! Text data that does not have to be set in the constructor
+	struct Data {
+		/**
+		 *  \brief fontsize for text rendering
+		 * 
+		 * \note this is not the actual font size that is loaded in.
+		 * 
+		 * Since SDL_TTF requires the font size when loading in the font it is not possible to switch the font size.
+		 * The default font size that is loaded is set in the Config.
+		 * Instead this value is used to upscale the font texture which can cause blurring or distorted text when upscaling or downscaling too much.
+		 */
+		unsigned int font_size = 16;
+
+		//! Layer sorting level of the text
+		const int sorting_in_layer = 0;
+
+		//! Order within the sorting text
+		const int order_in_layer = 0;
+
+		//! Label text color.
+		Color text_color = Color::BLACK;
+	};
+
+public:
+	/**
+	 * 
+	 * \param dimensions Width and height of the UIObject.
+	 * \param offset Offset of the UIObject relative to its transform
+	 * \param text The text to be displayed.
+	 * \param font_family The font style name to be displayed.
+	 * \param data Data struct containing extra text parameters.
+	 * \param font Optional font asset that can be passed or left empty.
+	 */
+	Text(game_object_id_t id, const vec2 & dimensions, const vec2 & offset,
+		 const std::string & font_family, const Data & data, const std::string & text = "",
+		 std::optional<Asset> font = std::nullopt);
+
+	//! Label text.
+	std::string text = "";
+	//! font family name
+	std::string font_family = "";
+	//! Font asset variable if this is not set, it will use the font_family to create an asset.
+	std::optional<Asset> font;
+	//! Data instance
+	Data data;
+};
+
+} // namespace crepe
diff --git a/src/crepe/facade/CMakeLists.txt b/src/crepe/facade/CMakeLists.txt
index 0598e16..243ae46 100644
--- a/src/crepe/facade/CMakeLists.txt
+++ b/src/crepe/facade/CMakeLists.txt
@@ -4,6 +4,8 @@ target_sources(crepe PUBLIC
 	SoundContext.cpp
 	SDLContext.cpp
 	DB.cpp
+	FontFacade.cpp
+	Font.cpp
 )
 
 target_sources(crepe PUBLIC FILE_SET HEADERS FILES
@@ -12,5 +14,7 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES
 	SoundContext.h
 	SDLContext.h
 	DB.h
+	FontFacade.h
+	Font.h
 )
 
diff --git a/src/crepe/facade/Font.cpp b/src/crepe/facade/Font.cpp
new file mode 100644
index 0000000..771002f
--- /dev/null
+++ b/src/crepe/facade/Font.cpp
@@ -0,0 +1,21 @@
+#include <SDL2/SDL_ttf.h>
+
+#include "../api/Asset.h"
+#include "../api/Config.h"
+
+#include "Font.h"
+
+using namespace std;
+using namespace crepe;
+
+Font::Font(const Asset & src, Mediator & mediator) : Resource(src, mediator) {
+	const Config & config = Config::get_instance();
+	const std::string FONT_PATH = src.get_path();
+	TTF_Font * loaded_font = TTF_OpenFont(FONT_PATH.c_str(), config.font.size);
+	if (loaded_font == NULL) {
+		throw runtime_error(format("Font: {} (path: {})", TTF_GetError(), FONT_PATH));
+	}
+	this->font = {loaded_font, [](TTF_Font * close_font) { TTF_CloseFont(close_font); }};
+}
+
+TTF_Font * Font::get_font() const { return this->font.get(); }
diff --git a/src/crepe/facade/Font.h b/src/crepe/facade/Font.h
new file mode 100644
index 0000000..b208d96
--- /dev/null
+++ b/src/crepe/facade/Font.h
@@ -0,0 +1,42 @@
+#pragma once
+
+#include <SDL2/SDL_ttf.h>
+#include <memory>
+
+#include "../Resource.h"
+#include "../api/Config.h"
+
+namespace crepe {
+
+class Asset;
+/**
+ * \brief Resource for managing font creation and destruction
+ *
+ * This class is a wrapper around an SDL_ttf font instance, encapsulating font loading and usage.
+ * It loads a font from an Asset and manages its lifecycle. The font is automatically unloaded
+ * when this object is destroyed.
+ */
+class Font : public Resource {
+
+public:
+	/**
+     * \param src The Asset containing the font file path and metadata to load the font.
+     * \param mediator The Mediator object used for managing the SDL context or related systems.
+     */
+	Font(const Asset & src, Mediator & mediator);
+	/**
+     * \brief Gets the underlying TTF_Font resource.
+     * 
+     * This function returns the raw pointer to the SDL_ttf TTF_Font object that represents
+     * the loaded font. This can be used with SDL_ttf functions to render text.
+     * 
+     * \return The raw TTF_Font object wrapped in a unique pointer.
+     */
+	TTF_Font * get_font() const;
+
+private:
+	//! The SDL_ttf font object with custom deleter.
+	std::unique_ptr<TTF_Font, std::function<void(TTF_Font *)>> font = nullptr;
+};
+
+} // namespace crepe
diff --git a/src/crepe/facade/FontFacade.cpp b/src/crepe/facade/FontFacade.cpp
new file mode 100644
index 0000000..7edfeb8
--- /dev/null
+++ b/src/crepe/facade/FontFacade.cpp
@@ -0,0 +1,51 @@
+#include <fontconfig/fontconfig.h>
+#include <stdexcept>
+
+#include "FontFacade.h"
+
+using namespace crepe;
+using namespace std;
+
+FontFacade::FontFacade() {
+	if (!FcInit()) {
+		throw runtime_error("Failed to initialize Fontconfig.");
+	}
+}
+FontFacade::~FontFacade() { FcFini(); }
+Asset FontFacade::get_font_asset(const string & font_family) {
+
+	// Create a pattern to search for the font family
+	FcPattern * pattern = FcNameParse(reinterpret_cast<const FcChar8 *>(font_family.c_str()));
+	if (pattern == NULL) {
+		throw runtime_error("Failed to create font pattern.");
+	}
+
+	// Default configuration
+	FcConfig * config = FcConfigGetCurrent();
+	if (config == NULL) {
+		// FcPatternDestroy(pattern);
+		throw runtime_error("Failed to get current Fontconfig configuration.");
+	}
+
+	// Match the font pattern
+	FcResult result;
+	FcPattern * matched_pattern = FcFontMatch(config, pattern, &result);
+	FcPatternDestroy(pattern);
+
+	if (matched_pattern == NULL) {
+		FcPatternDestroy(matched_pattern);
+		throw runtime_error("No matching font found.");
+	}
+	// Extract the file path
+	FcChar8 * file_path = nullptr;
+	if (FcPatternGetString(matched_pattern, FC_FILE, 0, &file_path) != FcResultMatch
+		|| file_path == NULL) {
+		// FcPatternDestroy(matched_pattern);
+		throw runtime_error("Failed to get font file path.");
+	}
+
+	// Convert the file path to a string
+	string font_file_path = reinterpret_cast<const char *>(file_path);
+	FcPatternDestroy(matched_pattern);
+	return Asset(font_file_path);
+}
diff --git a/src/crepe/facade/FontFacade.h b/src/crepe/facade/FontFacade.h
new file mode 100644
index 0000000..9761070
--- /dev/null
+++ b/src/crepe/facade/FontFacade.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <memory>
+
+#include "../api/Asset.h"
+
+namespace crepe {
+
+/**
+ * 
+ * \brief Font facade class for converting font family names to absolute file paths
+ * 
+ */
+class FontFacade {
+public:
+	FontFacade();
+	~FontFacade();
+	FontFacade(const FontFacade & other) = delete;
+	FontFacade & operator=(const FontFacade & other) = delete;
+	FontFacade(FontFacade && other) noexcept = delete;
+	FontFacade & operator=(FontFacade && other) noexcept = delete;
+	/**
+	 * 
+	 * \brief Facade function to convert a font_family into an asset.
+	 * 
+	 * This function uses the FontConfig library to convert a font family name (Arial, Inter, Helvetica) and converts it to the font source path.
+	 * This function returns a default font path if the font_family name doesnt exist or cant be found
+	 * \param font_family Name of the font family name.
+	 * \return Asset with filepath to the corresponding font.
+	 */
+	Asset get_font_asset(const std::string & font_family);
+};
+
+} // namespace crepe
diff --git a/src/crepe/facade/SDLContext.cpp b/src/crepe/facade/SDLContext.cpp
index f331517..fffbe34 100644
--- a/src/crepe/facade/SDLContext.cpp
+++ b/src/crepe/facade/SDLContext.cpp
@@ -6,6 +6,8 @@
 #include <SDL2/SDL_rect.h>
 #include <SDL2/SDL_render.h>
 #include <SDL2/SDL_surface.h>
+#include <SDL2/SDL_ttf.h>
+#include <SDL2/SDL_video.h>
 #include <array>
 #include <cmath>
 #include <cstddef>
@@ -30,6 +32,9 @@ using namespace std;
 
 SDLContext::SDLContext(Mediator & mediator) {
 	dbg_trace();
+	if (TTF_Init() == -1) {
+		throw runtime_error(format("SDL_ttf initialization failed: {}", TTF_GetError()));
+	}
 	if (SDL_Init(SDL_INIT_VIDEO) != 0) {
 		throw runtime_error(format("SDLContext: SDL_Init error: {}", SDL_GetError()));
 	}
@@ -71,6 +76,7 @@ SDLContext::~SDLContext() {
 	// thread that SDL_Init() was called on? This has caused problems for me
 	// before.
 	IMG_Quit();
+	TTF_Quit();
 	SDL_Quit();
 }
 
@@ -407,3 +413,7 @@ void SDLContext::set_color_texture(const Texture & texture, const Color & color)
 	SDL_SetTextureColorMod(texture.get_img(), color.r, color.g, color.b);
 	SDL_SetTextureAlphaMod(texture.get_img(), color.a);
 }
+
+Asset SDLContext::get_font_from_name(const std::string & font_family) {
+	return this->font_facade.get_font_asset(font_family);
+}
diff --git a/src/crepe/facade/SDLContext.h b/src/crepe/facade/SDLContext.h
index b9c7fbd..b687f87 100644
--- a/src/crepe/facade/SDLContext.h
+++ b/src/crepe/facade/SDLContext.h
@@ -17,8 +17,10 @@
 #include "api/KeyCodes.h"
 #include "api/Sprite.h"
 #include "api/Transform.h"
+#include "types.h"
 
 #include "EventData.h"
+#include "FontFacade.h"
 
 namespace crepe {
 class Texture;
@@ -242,6 +244,20 @@ private:
 	CameraAuxiliaryData cam_aux_data;
 
 private:
+	//! instance of the font_facade
+	FontFacade font_facade{};
+
+public:
+	/**
+	 * \brief Function to Get asset from font_family
+	 * 
+	 * This function uses the FontFacade function to convert a font_family to an asset.
+	 * 
+	 * \param font_family name of the font style that needs to be used (will return an asset with default font path of the font_family doesnt exist)
+	 * 
+	 * \return asset with the font style absolute path
+	 */
+	Asset get_font_from_name(const std::string & font_family);
 	//! variable to store the state of each key (true = pressed, false = not pressed)
 	keyboard_state_t keyboard_state;
 	//! lookup table for converting SDL_SCANCODES to Keycodes
diff --git a/src/crepe/system/RenderSystem.cpp b/src/crepe/system/RenderSystem.cpp
index 505433a..62d42ec 100644
--- a/src/crepe/system/RenderSystem.cpp
+++ b/src/crepe/system/RenderSystem.cpp
@@ -2,13 +2,16 @@
 #include <cassert>
 #include <cmath>
 #include <functional>
+#include <optional>
 #include <stdexcept>
 #include <vector>
 
 #include "../api/Camera.h"
 #include "../api/ParticleEmitter.h"
 #include "../api/Sprite.h"
+#include "../api/Text.h"
 #include "../api/Transform.h"
+#include "../facade/Font.h"
 #include "../facade/SDLContext.h"
 #include "../facade/Texture.h"
 #include "../manager/ComponentManager.h"
@@ -120,8 +123,14 @@ void RenderSystem::render() {
 	this->update_camera();
 
 	RefVector<Sprite> sprites = mgr.get_components_by_type<Sprite>();
+	ResourceManager & resource_manager = this->mediator.resource_manager;
 	RefVector<Sprite> sorted_sprites = this->sort(sprites);
-
+	RefVector<Text> text_components = mgr.get_components_by_type<Text>();
+	for (Text & text : text_components) {
+		const Transform & transform
+			= mgr.get_components_by_id<Transform>(text.game_object_id).front().get();
+		this->render_text(text, transform);
+	}
 	for (const Sprite & sprite : sorted_sprites) {
 		if (!sprite.active) continue;
 		const Transform & transform
@@ -134,3 +143,18 @@ void RenderSystem::render() {
 		this->render_normal(sprite, transform);
 	}
 }
+void RenderSystem::render_text(Text & text, const Transform & tm) {
+	SDLContext & ctx = this->mediator.sdl_context;
+
+	if (!text.font.has_value()) {
+		text.font.emplace(ctx.get_font_from_name(text.font_family));
+	}
+
+	ResourceManager & resource_manager = this->mediator.resource_manager;
+
+	if (!text.font.has_value()) {
+		return;
+	}
+	const Asset & font_asset = text.font.value();
+	const Font & res = resource_manager.get<Font>(font_asset);
+}
diff --git a/src/crepe/system/RenderSystem.h b/src/crepe/system/RenderSystem.h
index fc7b46e..56a0553 100644
--- a/src/crepe/system/RenderSystem.h
+++ b/src/crepe/system/RenderSystem.h
@@ -10,7 +10,7 @@ namespace crepe {
 class Camera;
 class Sprite;
 class Transform;
-
+class Text;
 /**
  * \brief Manages rendering operations for all game objects.
  *
@@ -50,7 +50,13 @@ private:
 	 * \return true if particles have been rendered
 	 */
 	bool render_particle(const Sprite & sprite, const double & scale);
-
+	/**
+	 * \brief Renders all Text components
+	 *
+	 * \param text The text component to be rendered.
+	 * \param tm the Transform component that holds the position,rotation and scale
+	 */
+	void render_text(Text & text, const Transform & tm);
 	/**
 	 * \brief renders a sprite with a Transform component on the screen
 	 *
diff --git a/src/example/CMakeLists.txt b/src/example/CMakeLists.txt
index 187ed46..f62414e 100644
--- a/src/example/CMakeLists.txt
+++ b/src/example/CMakeLists.txt
@@ -19,4 +19,6 @@ endfunction()
 add_example(rendering_particle)
 add_example(game)
 add_example(button)
+add_example(loadfont)
+add_example(FontExample)
 add_example(AITest)
diff --git a/src/example/FontExample.cpp b/src/example/FontExample.cpp
new file mode 100644
index 0000000..6a334b1
--- /dev/null
+++ b/src/example/FontExample.cpp
@@ -0,0 +1,55 @@
+#include <SDL2/SDL_ttf.h>
+#include <chrono>
+#include <crepe/api/Camera.h>
+#include <crepe/api/Config.h>
+#include <crepe/api/GameObject.h>
+#include <crepe/api/LoopManager.h>
+#include <crepe/api/Scene.h>
+#include <crepe/api/Script.h>
+#include <crepe/api/Text.h>
+#include <crepe/facade/Font.h>
+#include <crepe/facade/SDLContext.h>
+#include <crepe/manager/EventManager.h>
+#include <crepe/manager/Mediator.h>
+#include <crepe/manager/ResourceManager.h>
+#include <exception>
+#include <iostream>
+#include <memory>
+using namespace crepe;
+using namespace std;
+using namespace std::chrono;
+class TestScript : public Script {
+public:
+	steady_clock::time_point start_time;
+	virtual void init() override { start_time = steady_clock::now(); }
+	virtual void update() override {
+		auto now = steady_clock::now();
+		auto elapsed = duration_cast<seconds>(now - start_time).count();
+
+		if (elapsed >= 5) {
+			Mediator & med = mediator;
+			EventManager & event_mgr = med.event_manager;
+			event_mgr.trigger_event<ShutDownEvent>();
+		}
+	}
+};
+class TestScene : public Scene {
+public:
+	void load_scene() override {
+		GameObject text_object = this->new_object("test", "test", vec2{0, 0}, 0, 1);
+		text_object.add_component<Text>(vec2(100, 100), vec2(0, 0), "OpenSymbol",
+										Text::Data{});
+		text_object.add_component<BehaviorScript>().set_script<TestScript>();
+		text_object.add_component<Camera>(ivec2{300, 300}, vec2{100, 100}, Camera::Data{});
+	}
+	std::string get_name() const override { return "hey"; }
+};
+int main() {
+	// Config& config = Config::get_instance();
+	// config.log.level = Log::Level::TRACE;
+	LoopManager engine;
+	engine.add_scene<TestScene>();
+	engine.start();
+
+	return 0;
+}
diff --git a/src/example/loadfont.cpp b/src/example/loadfont.cpp
new file mode 100644
index 0000000..78b3adb
--- /dev/null
+++ b/src/example/loadfont.cpp
@@ -0,0 +1,46 @@
+#include <SDL2/SDL_ttf.h>
+#include <crepe/api/Asset.h>
+#include <crepe/api/Text.h>
+#include <crepe/facade/Font.h>
+#include <crepe/facade/SDLContext.h>
+#include <crepe/manager/Mediator.h>
+#include <crepe/manager/ResourceManager.h>
+#include <exception>
+#include <iostream>
+#include <memory>
+#include <optional>
+using namespace crepe;
+int main() {
+
+	// SDLFontContext font_facade;
+	Mediator mediator;
+	SDLContext sdl_context{mediator};
+	// ComponentManager component_manager{mediator};
+	ResourceManager resource_manager{mediator};
+	try {
+		// Correct way to create a unique pointer for Text
+		std::unique_ptr<Text> label = std::make_unique<Text>(
+			1, vec2(100, 100), vec2(0, 0), "OpenSymbol", Text::Data{}, "test text", Asset(""));
+		// std::cout << "Path: " << label->font.get_path() << std::endl;
+
+		std::unique_ptr<Text> label2 = std::make_unique<Text>(
+			1, vec2(100, 100), vec2(0, 0), "fsaafdafsdafsdafsdasfdds", Text::Data{});
+		Asset asset = Asset("test test");
+		label->font.emplace(asset);
+		std::cout << label->font.value().get_path() << std::endl;
+		// label2->font = std::make_optional(asset);
+		// std::cout << "Path: " << label2->font.get_path() << std::endl;
+		ResourceManager & resource_mgr = mediator.resource_manager;
+		const Font & res = resource_manager.get<Font>(label->font.value());
+		// TTF_Font * test_font = res.get_font();
+		// if (test_font == NULL) {
+		// 	std::cout << "error with font" << std::endl;
+		// } else {
+		// 	std::cout << "correct font retrieved" << std::endl;
+		// }
+	} catch (const std::exception & e) {
+		std::cout << "Standard exception thrown: " << e.what() << std::endl;
+	}
+
+	return 0;
+}