create context

6 files changed, 129 insertions, 44 deletions

diff --git a/demo.cpp b/demo.cpp
index b8a014f..ea5d525 100644
--- a/demo.cpp
+++ b/demo.cpp
@@ -3,9 +3,12 @@
 int
 main()
 {
-	FLD fld;
-	if (fld.init()) {
+	FLD fld (FLD::Config{
+		.width=256,
+		.height=256,
+		.title="uwu",
+	});
+	if (fld.init())
 		return 1;
-	}
 	return 0;
 }
diff --git a/src/FLD.cpp b/src/FLD.cpp
deleted file mode 100644
index 319357e..0000000
--- a/src/FLD.cpp
+++ /dev/null
@@ -1,41 +0,0 @@
-#include "FLD.hpp"
-#include <SDL2/SDL.h>
-
-FLD::Error
-FLD::init()
-{
-	if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0)
-		return sdl_error();
-
-	_window = SDL_CreateWindow("uwu",
-	                           SDL_WINDOWPOS_UNDEFINED,
-	                           SDL_WINDOWPOS_UNDEFINED,
-	                           128,
-	                           128,
-	                           SDL_WINDOW_RESIZABLE);
-	if (_window == nullptr)
-		return sdl_error();
-
-#ifdef __EMSCRIPTEN__
-	_renderer = SDL_CreateRenderer(_window, -1, SDL_RENDERER_SOFTWARE);
-#else
-	_renderer = SDL_CreateRenderer(_window, -1, SDL_RENDERER_ACCELERATED);
-#endif
-	if (_renderer == nullptr)
-		return sdl_error();
-
-	return 0;
-}
-
-FLD::~FLD()
-{
-	if (_renderer != nullptr) {
-		SDL_DestroyRenderer(_renderer);
-		_renderer = nullptr;
-	}
-	if (_window != nullptr) {
-		SDL_DestroyWindow(_window);
-		_window = nullptr;
-	}
-	SDL_Quit();
-}
diff --git a/src/FLD.hpp b/src/FLD.hpp
index d4947d6..cae4cf8 100644
--- a/src/FLD.hpp
+++ b/src/FLD.hpp
@@ -1,16 +1,36 @@
 #pragma once
 #include <SDL2/SDL_render.h>
+#include <string>
 
 #define READONLY(T, X, V) private: T _##X = V; public: T const& X = _##X
 
 class FLD {
+public:
+	struct Config {
+		int width = 640;
+		int height = 480;
+		int scale = 1;
+		int target_fps = 60;
+		bool pixel_perfect = true;
+		bool hide_cursor = true;
+		std::string title = "FLD project";
+	};
+
+	const Config config;
 	READONLY(SDL_Window *, window, nullptr);
 	READONLY(SDL_Renderer *, renderer, nullptr);
+	READONLY(SDL_Texture *, target, nullptr);
 public:
 	using Error = int;
 
+	FLD(const Config& config);
+	FLD(const Config&& config);
 	[[nodiscard]] Error init();
 	~FLD();
 private:
 	Error sdl_error() const;
+	[[nodiscard]] Error initBasepath() const;
+	[[nodiscard]] Error initWindow();
+	[[nodiscard]] Error initRenderer();
+	[[nodiscard]] Error initTarget();
 };
diff --git a/src/constructors.cpp b/src/constructors.cpp
new file mode 100644
index 0000000..921dba8
--- /dev/null
+++ b/src/constructors.cpp
@@ -0,0 +1,4 @@
+#include "FLD.hpp"
+
+FLD::FLD(const Config& config) : config(config) {}
+FLD::FLD(const Config&& config) : config(std::move(config)) {}
diff --git a/src/destructor.cpp b/src/destructor.cpp
new file mode 100644
index 0000000..7f1c906
--- /dev/null
+++ b/src/destructor.cpp
@@ -0,0 +1,19 @@
+#include "FLD.hpp"
+#include <SDL2/SDL.h>
+
+FLD::~FLD()
+{
+	if (_target != nullptr) {
+		SDL_DestroyTexture(_target);
+		_target = nullptr;
+	}
+	if (_renderer != nullptr) {
+		SDL_DestroyRenderer(_renderer);
+		_renderer = nullptr;
+	}
+	if (_window != nullptr) {
+		SDL_DestroyWindow(_window);
+		_window = nullptr;
+	}
+	SDL_Quit();
+}
diff --git a/src/init.cpp b/src/init.cpp
new file mode 100644
index 0000000..a6689a3
--- /dev/null
+++ b/src/init.cpp
@@ -0,0 +1,80 @@
+#include "FLD.hpp"
+#include <SDL2/SDL.h>
+#include <unistd.h>
+
+FLD::Error
+FLD::init()
+{
+	if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0)
+		return sdl_error();
+	if (auto err = initBasepath())
+		return err;
+	if (auto err = initWindow())
+		return err;
+	if (auto err = initRenderer())
+		return err;
+	if (auto err = initTarget())
+		return err;
+
+	SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "0");
+
+	if (config.hide_cursor) {
+		if (SDL_ShowCursor(SDL_FALSE) < 0)
+			sdl_error();
+	}
+
+	return 0;
+}
+
+FLD::Error
+FLD::initBasepath() const
+{
+	char *const basepath = SDL_GetBasePath();
+	if (basepath == nullptr)
+		return sdl_error();
+	const int chdir_rv = chdir(basepath);
+	SDL_free(basepath);
+	if (chdir_rv < 0)
+		return perror("chdir"), -1;
+	return 0;
+}
+
+FLD::Error
+FLD::initWindow()
+{
+	_window = SDL_CreateWindow(config.title.c_str(),
+	                           SDL_WINDOWPOS_UNDEFINED,
+	                           SDL_WINDOWPOS_UNDEFINED,
+	                           config.width * config.scale,
+	                           config.height * config.scale,
+	                           SDL_WINDOW_RESIZABLE);
+	if (_window == nullptr)
+		return sdl_error();
+	return 0;
+}
+
+FLD::Error
+FLD::initRenderer()
+{
+#ifdef __EMSCRIPTEN__
+	_renderer = SDL_CreateRenderer(_window, -1, SDL_RENDERER_SOFTWARE);
+#else
+	_renderer = SDL_CreateRenderer(_window, -1, SDL_RENDERER_ACCELERATED);
+#endif
+	if (_renderer == nullptr)
+		return sdl_error();
+	return 0;
+}
+
+FLD::Error
+FLD::initTarget()
+{
+	_target = SDL_CreateTexture(_renderer,
+	                            SDL_PIXELFORMAT_RGB888,
+	                            SDL_TEXTUREACCESS_TARGET,
+	                            config.width,
+	                            config.height);
+	if (_target == nullptr)
+		return sdl_error();
+	return 0;
+}