matrix::Rain Class Reference

#include <examples/rain/rain.hpp>

Public Member Functions
void	event (SDL_Event &e)
int	height () const
void	on_swapchain_recreated (mxvk::VK_Window &window)
Rain &	operator= (const Rain &)=delete
Rain &	operator= (Rain &&)=delete
int	pitch () const
const void *	pixels () const
	Rain (const Rain &)=delete
	Rain (const std::string &asset_root, bool binary_glyph_mode)
	Rain (mxvk::VK_Window &window, const std::string &asset_root, bool binary_glyph_mode)
	Rain (mxvk::VK_Window &window, RainConfig config)
	Rain (Rain &&)=delete
	Rain (RainConfig config)
void	render ()
void	render (int width, int height)
void	reset ()
void	resize (int width, int height)
void	resize (mxvk::VK_Window &window)
void	set_opacity (float opacity)
mxvk::VK_Sprite *	sprite () const
SDL_Surface *	surface () const
void	sync_texture ()
void	update (float dt)
void	update_and_render (mxvk::VK_Window &window)
void	update_and_render (mxvk::VK_Window &window, int render_width, int render_height)
int	width () const
	~Rain ()

Static Public Member Functions
static std::vector< Uint32 >	binary_symbol_set ()
static std::vector< Uint32 >	full_symbol_set ()
static SDL_Color	head_color ()
static SDL_Color	matrix_color (int level)

Detailed Description

Definition at line 58 of file rain.hpp.

Constructor & Destructor Documentation

Rain() [1/6]

matrix::Rain::Rain	(	mxvk::VK_Window &	window,
		RainConfig	config )

Definition at line 166 of file rain.cpp.

        : Rain(std::move(rain_config), SurfaceMode::window_driven) {
        resize(window);
    }

Rain() [2/6]

matrix::Rain::Rain ( RainConfig config )

explicit

Definition at line 171 of file rain.cpp.

        : Rain(std::move(rain_config), SurfaceMode::explicit_default) {}

Rain() [3/6]

matrix::Rain::Rain	(	mxvk::VK_Window &	window,
		const std::string &	asset_root,
		bool	binary_glyph_mode )

Definition at line 220 of file rain.cpp.

        : Rain(window, make_matrix_rain_config(asset_root_path, binary_glyph_mode)) {}

Rain() [4/6]

matrix::Rain::Rain	(	const std::string &	asset_root,
		bool	binary_glyph_mode )

Definition at line 223 of file rain.cpp.

        : Rain(make_matrix_rain_config(asset_root_path, binary_glyph_mode), SurfaceMode::explicit_default) {}

~Rain()

matrix::Rain::~Rain

(

)

Definition at line 226 of file rain.cpp.

                {
        glyphs.clear();
        font.reset();
        background.reset();
        canvas.reset();
        if (ttf_acquired) {
            release_ttf();
        }
    }

Rain() [5/6]

matrix::Rain::Rain ( const Rain & )

delete

Rain() [6/6]

matrix::Rain::Rain ( Rain && )

delete

Member Function Documentation

binary_symbol_set()

std::vector< Uint32 > matrix::Rain::binary_symbol_set ( )

static

Definition at line 153 of file rain.cpp.

                                              {
        return {U'0', U'1'};
    }

event()

void matrix::Rain::event

(

SDL_Event &

e

)

Definition at line 236 of file rain.cpp.

                                 {
        if (e.type == SDL_EVENT_KEY_DOWN && e.key.key == SDLK_SPACE) {
            randomize_streams();
            clear_canvas();
        }
    }

full_symbol_set()

std::vector< Uint32 > matrix::Rain::full_symbol_set ( )

static

Definition at line 142 of file rain.cpp.

                                            {
        return {
            0xFF66, 0xFF67, 0xFF68, 0xFF69, 0xFF6A, 0xFF6B, 0xFF6C, 0xFF6D,
            0xFF6E, 0xFF6F, 0xFF71, 0xFF72, 0xFF73, 0xFF74, 0xFF75, 0xFF76,
            0xFF77, 0xFF78, 0xFF79, 0xFF7A, 0xFF7B, 0xFF7C, 0xFF7D, 0xFF7E,
            0xFF7F, 0xFF80, 0xFF81, 0xFF82, 0xFF83, 0xFF84, 0xFF85, 0xFF86,
            0xFF87, 0xFF88, 0xFF89, 0xFF8A, 0xFF8B, 0xFF8C, 0xFF8D, 0xFF8E,
            0xFF8F, 0xFF90, 0xFF91, 0xFF92, 0xFF93, 0xFF94, 0xFF95, 0xFF96,
            0xFF97, 0xFF98, 0xFF99, 0xFF9A, 0xFF9B, 0xFF9C, 0xFF9D};
    }

head_color()

SDL_Color matrix::Rain::head_color ( )

static

Definition at line 138 of file rain.cpp.

                               {
        return SDL_Color{208, 255, 200, 255};
    }

height()

int matrix::Rain::height ( ) const

nodiscard

Definition at line 343 of file rain.cpp.

                           {
        return canvas != nullptr ? canvas->h : 0;
    }

matrix_color()

SDL_Color matrix::Rain::matrix_color ( int level )

static

Definition at line 128 of file rain.cpp.

                                          {
        constexpr int max_level = 7;
        const float t = std::clamp(static_cast<float>(level) / static_cast<float>(max_level), 0.0f, 1.0f);
        const Uint8 r = static_cast<Uint8>(std::lerp(0.0f, 48.0f, std::pow(t, 2.9f)));
        const Uint8 g = static_cast<Uint8>(std::lerp(42.0f, 205.0f, std::pow(t, 0.82f)));
        const Uint8 b = static_cast<Uint8>(std::lerp(0.0f, 24.0f, std::pow(t, 3.1f)));
        const Uint8 a = static_cast<Uint8>(std::lerp(95.0f, 235.0f, t));
        return SDL_Color{r, g, b, a};
    }

on_swapchain_recreated()

void matrix::Rain::on_swapchain_recreated

(

mxvk::VK_Window &

window

)

Definition at line 323 of file rain.cpp.

                                                           {
        resize(window);
    }

operator=() [1/2]

Rain & matrix::Rain::operator= ( const Rain & )

delete

operator=() [2/2]

Rain & matrix::Rain::operator= ( Rain && )

delete

pitch()

int matrix::Rain::pitch ( ) const

nodiscard

Definition at line 347 of file rain.cpp.

                          {
        return canvas != nullptr ? canvas->pitch : 0;
    }

pixels()

const void * matrix::Rain::pixels ( ) const

nodiscard

Definition at line 335 of file rain.cpp.

                                   {
        return canvas != nullptr ? canvas->pixels : nullptr;
    }

render() [1/2]

void matrix::Rain::render

(

)

Definition at line 279 of file rain.cpp.

                      {
        if (canvas == nullptr) {
            return;
        }
        render(canvas->w, canvas->h);
    }

render() [2/2]

void matrix::Rain::render	(	int	width,
		int	height )

Definition at line 286 of file rain.cpp.

                                           {
        sync_texture();
        if (rain_sprite == nullptr || canvas == nullptr) {
            return;
        }
        rain_sprite->drawSpriteRect(0, 0, width, height);
    }

reset()

void matrix::Rain::reset

(

)

Definition at line 298 of file rain.cpp.

                     {
        clear_canvas();
        randomize_streams();
        opacity = 1.0f;
        last_frame = std::chrono::steady_clock::now();
    }

resize() [1/2]

void matrix::Rain::resize	(	int	width,
		int	height )

Definition at line 247 of file rain.cpp.

                                           {
        if (width <= 0 || height <= 0 || (canvas != nullptr && canvas->w == width && canvas->h == height)) {
            return;
        }
 
        canvas.reset(SDL_CreateSurface(width, height, SDL_PIXELFORMAT_RGBA32));
        if (canvas == nullptr) {
            throw mxvk::Exception("Failed to create matrix canvas: " + std::string(SDL_GetError()));
        }
        clear_canvas();
 
        columns = std::max(1, (width + cell_w - 1) / cell_w);
        rows = std::max(1, (height + cell_h - 1) / cell_h);
        streams.assign(columns, {});
        randomize_streams();
    }

resize() [2/2]

void matrix::Rain::resize

(

mxvk::VK_Window &

window

)

Definition at line 243 of file rain.cpp.

                                           {
        rebuild_for_extent(window);
    }

set_opacity()

void matrix::Rain::set_opacity

(

float

opacity

)

Definition at line 294 of file rain.cpp.

                                      {
        opacity = std::clamp(value, 0.0f, 1.0f);
    }

sprite()

mxvk::VK_Sprite * matrix::Rain::sprite ( ) const

nodiscard

Definition at line 327 of file rain.cpp.

                                      {
        return rain_sprite;
    }

surface()

SDL_Surface * matrix::Rain::surface ( ) const

nodiscard

Definition at line 331 of file rain.cpp.

                                     {
        return canvas.get();
    }

sync_texture()

void matrix::Rain::sync_texture

(

)

Definition at line 272 of file rain.cpp.

                            {
        if (rain_sprite == nullptr || canvas == nullptr) {
            return;
        }
        rain_sprite->updateTexture(canvas->pixels, canvas->w, canvas->h, canvas->pitch);
    }

update()

void matrix::Rain::update

(

float

dt

)

Definition at line 264 of file rain.cpp.

                              {
        dt = std::clamp(dt, 0.0f, 1.0f / 15.0f);
        if (canvas == nullptr || glyphs.empty()) {
            return;
        }
        update_rain(dt);
    }

update_and_render() [1/2]

void matrix::Rain::update_and_render

(

mxvk::VK_Window &

window

)

Definition at line 305 of file rain.cpp.

                                                      {
        const auto now = std::chrono::steady_clock::now();
        float dt = std::chrono::duration<float>(now - last_frame).count();
        last_frame = now;
        resize(window);
        update(dt);
        render();
    }

update_and_render() [2/2]

void matrix::Rain::update_and_render	(	mxvk::VK_Window &	window,
		int	render_width,
		int	render_height )

Definition at line 314 of file rain.cpp.

                                                                                           {
        const auto now = std::chrono::steady_clock::now();
        float dt = std::chrono::duration<float>(now - last_frame).count();
        last_frame = now;
        resize(window);
        update(dt);
        render(render_width, render_height);
    }

width()

int matrix::Rain::width ( ) const

nodiscard

Definition at line 339 of file rain.cpp.

                          {
        return canvas != nullptr ? canvas->w : 0;
    }

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The documentation for this class was generated from the following files:

• examples/rain/rain.hpp
• examples/rain/rain.cpp