diff options
Diffstat (limited to 'src/crepe/facade/SDLContext.h')
| -rw-r--r-- | src/crepe/facade/SDLContext.h | 161 |
1 files changed, 90 insertions, 71 deletions
diff --git a/src/crepe/facade/SDLContext.h b/src/crepe/facade/SDLContext.h index a2b34c1..bcadf87 100644 --- a/src/crepe/facade/SDLContext.h +++ b/src/crepe/facade/SDLContext.h @@ -9,34 +9,60 @@ #include <functional> #include <memory> #include <string> -#include <utility> #include "api/Camera.h" #include "api/Color.h" -#include "api/Event.h" #include "api/KeyCodes.h" #include "api/Sprite.h" -#include "api/Texture.h" #include "api/Transform.h" + #include "types.h" namespace crepe { -class LoopManager; -class InputSystem; +class Texture; +class Mediator; + /** - * \class SDLContext * \brief Facade for the SDL library - * + * * SDLContext is a singleton that handles the SDL window and renderer, provides methods for * event handling, and rendering to the screen. It is never used directly by the user */ class SDLContext { public: + //! data that the camera component cannot hold + struct CameraAuxiliaryData { + + //! zoomed in viewport in game_units + vec2 zoomed_viewport; + + /** + * \brief scaling factor + * + * depending on the black bars type will the scaling be different. + * - letterboxing --> scaling on the y-as + * - pillarboxing --> scaling on the x-as + */ + vec2 render_scale; + + /** + * \brief size of calculated black bars + * + * depending on the black bars type will the size be different + * - lettorboxing --> {0, bar_height} + * - pillarboxing --> {bar_width , 0} + */ + vec2 bar_size; + + //! Calculated camera position + vec2 cam_pos; + }; + + //! rendering data needed to render on screen struct RenderContext { const Sprite & sprite; - const Camera & cam; - const vec2 & cam_pos; + const Texture & texture; const vec2 & pos; const double & angle; const double & scale; @@ -66,37 +92,44 @@ public: float scroll_delta = INFINITY; ivec2 rel_mouse_move = {-1, -1}; }; - /** - * \brief Gets the singleton instance of SDLContext. - * \return Reference to the SDLContext instance. - */ - static SDLContext & get_instance(); +public: SDLContext(const SDLContext &) = delete; SDLContext(SDLContext &&) = delete; SDLContext & operator=(const SDLContext &) = delete; SDLContext & operator=(SDLContext &&) = delete; -private: - //! will only use get_events - friend class InputSystem; +public: + /** + * \brief Constructs an SDLContext instance. + * Initializes SDL, creates a window and renderer. + */ + SDLContext(Mediator & mediator); + + /** + * \brief Destroys the SDLContext instance. + * Cleans up SDL resources, including the window and renderer. + */ + ~SDLContext(); + +public: /** * \brief Retrieves a list of all events from the SDL context. - * + * * This method retrieves all the events from the SDL context that are currently * available. It is primarily used by the InputSystem to process various * input events such as mouse clicks, mouse movements, and keyboard presses. - * + * * \return Events that occurred since last call to `get_events()` */ std::vector<SDLContext::EventData> get_events(); /** * \brief Converts an SDL key code to the custom Keycode type. - * + * * This method maps an SDL key code to the corresponding `Keycode` enum value, * which is used internally by the system to identify the keys. - * + * * \param sdl_key The SDL key code to convert. * \return The corresponding `Keycode` value or `Keycode::NONE` if the key is unrecognized. */ @@ -104,20 +137,16 @@ private: /** * \brief Converts an SDL mouse button code to the custom MouseButton type. - * - * This method maps an SDL mouse button code to the corresponding `MouseButton` + * + * This method maps an SDL mouse button code to the corresponding `MouseButton` * enum value, which is used internally by the system to identify mouse buttons. - * + * * \param sdl_button The SDL mouse button code to convert. * \return The corresponding `MouseButton` value or `MouseButton::NONE` if the key is unrecognized */ MouseButton sdl_to_mousebutton(Uint8 sdl_button); -private: - //! Will only use get_ticks - friend class AnimatorSystem; - //! Will only use delay - friend class LoopTimer; +public: /** * \brief Gets the current SDL ticks since the program started. * \return Current ticks in milliseconds as a constant uint64_t. @@ -133,23 +162,7 @@ private: */ void delay(int ms) const; -private: - /** - * \brief Constructs an SDLContext instance. - * Initializes SDL, creates a window and renderer. - */ - SDLContext(); - - /** - * \brief Destroys the SDLContext instance. - * Cleans up SDL resources, including the window and renderer. - */ - ~SDLContext(); - -private: - //! Will use the funtions: texture_from_path, get_width,get_height. - friend class Texture; - +public: /** * \brief Loads a texture from a file path. * \param path Path to the image file. @@ -160,17 +173,14 @@ private: /** * \brief Gets the size of a texture. * \param texture Reference to the Texture object. - * \return Width and height of the texture as an integer. + * \return Width and height of the texture as an integer in pixels. */ ivec2 get_size(const Texture & ctx); -private: - //! Will use draw,clear_screen, present_screen, camera. - friend class RenderSystem; - +public: /** * \brief Draws a sprite to the screen using the specified transform and camera. - * \param RenderCtx Reference to rendering data to draw + * \param RenderContext Reference to rendering data to draw */ void draw(const RenderContext & ctx); @@ -181,36 +191,35 @@ private: void present_screen(); /** - * \brief sets the background of the camera (will be adjusted in future PR) - * \param camera Reference to the Camera object. - */ - void set_camera(const Camera & camera); - -private: - /** - * \brief calculates the sqaure size of the image + * \brief calculates camera view settings. such as black_bars, zoomed_viewport, scaling and + * adjusting window size. * - * \param sprite Reference to the sprite to calculate the rectangle - * \return sdl rectangle to draw a src image + * \note only supports windowed mode. + * \param camera Reference to the current Camera object in the scene. + * \param new_pos new camera position from transform and offset */ - SDL_Rect get_src_rect(const Sprite & sprite) const; + void update_camera_view(const Camera & camera, const vec2 & new_pos); + +public: + //! the data needed to construct a sdl dst rectangle + struct DestinationRectangleData { + const Sprite & sprite; + const Texture & texture; + const vec2 & pos; + const double & img_scale; + }; /** * \brief calculates the sqaure size of the image for destination * - * \param sprite Reference to the sprite to calculate rectangle - * \param pos the pos in world units - * \param cam the camera of the current scene - * \param cam_pos the current postion of the camera - * \param img_scale the image multiplier for increasing img size + * \param data needed to calculate a destination rectangle * \return sdl rectangle to draw a dst image to draw on the screen */ - SDL_Rect get_dst_rect(const Sprite & sprite, const vec2 & pos, const Camera & cam, - const vec2 & cam_pos, const double & img_scale) const; + SDL_FRect get_dst_rect(const DestinationRectangleData & data) const; /** * \brief Set an additional color value multiplied into render copy operations. * - * \param texture the given texture to adjust + * \param texture the given texture to adjust * \param color the color data for the texture */ void set_color_texture(const Texture & texture, const Color & color); @@ -221,6 +230,16 @@ private: //! renderer for the crepe engine std::unique_ptr<SDL_Renderer, std::function<void(SDL_Renderer *)>> game_renderer; + + //! black bars rectangle to draw + SDL_FRect black_bars[2] = {}; + + /** + * \cam_aux_data extra data that the component cannot hold. + * + * - this is defined in this class because get_events() needs this information aswell + */ + CameraAuxiliaryData cam_aux_data; }; } // namespace crepe |