mirror of
https://github.com/switchbrew/switch-examples.git
synced 2025-06-20 21:12:38 +02:00
260 lines
7.5 KiB
C
260 lines
7.5 KiB
C
/* Mini SDL Demo
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* featuring SDL2 + SDL2_mixer + SDL2_image + SDL2_ttf
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* on Nintendo Switch using libnx
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*
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* Copyright 2018 carsten1ns
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* 2020 WinterMute
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include <time.h>
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#include <unistd.h>
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#include <SDL.h>
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#include <SDL_mixer.h>
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#include <SDL_image.h>
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#include <SDL_ttf.h>
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#include <switch.h>
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// some switch buttons
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#define JOY_A 0
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#define JOY_B 1
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#define JOY_X 2
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#define JOY_Y 3
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#define JOY_PLUS 10
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#define JOY_MINUS 11
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#define JOY_LEFT 12
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#define JOY_UP 13
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#define JOY_RIGHT 14
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#define JOY_DOWN 15
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#define SCREEN_W 1280
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#define SCREEN_H 720
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SDL_Texture * render_text(SDL_Renderer *renderer, const char* text, TTF_Font *font, SDL_Color color, SDL_Rect *rect)
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{
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SDL_Surface *surface;
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SDL_Texture *texture;
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surface = TTF_RenderText_Solid(font, text, color);
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texture = SDL_CreateTextureFromSurface(renderer, surface);
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rect->w = surface->w;
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rect->h = surface->h;
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SDL_FreeSurface(surface);
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return texture;
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}
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int rand_range(int min, int max){
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return min + rand() / (RAND_MAX / (max - min + 1) + 1);
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}
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int main(int argc, char** argv) {
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romfsInit();
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chdir("romfs:/");
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int exit_requested = 0;
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int trail = 0;
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int wait = 25;
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SDL_Texture *switchlogo_tex = NULL, *sdllogo_tex = NULL, *helloworld_tex = NULL;
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SDL_Rect pos = { 0, 0, 0, 0 }, sdl_pos = { 0, 0, 0, 0 };
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Mix_Music *music = NULL;
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Mix_Chunk *sound[4] = { NULL };
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SDL_Event event;
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SDL_Color colors[] = {
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{ 128, 128, 128, 0 }, // gray
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{ 255, 255, 255, 0 }, // white
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{ 255, 0, 0, 0 }, // red
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{ 0, 255, 0, 0 }, // green
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{ 0, 0, 255, 0 }, // blue
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{ 255, 255, 0, 0 }, // brown
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{ 0, 255, 255, 0 }, // cyan
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{ 255, 0, 255, 0 }, // purple
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};
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int col = 0, snd = 0;
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srand(time(NULL));
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int vel_x = rand_range(1, 5);
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int vel_y = rand_range(1, 5);
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SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER);
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Mix_Init(MIX_INIT_OGG);
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IMG_Init(IMG_INIT_PNG);
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TTF_Init();
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SDL_Window* window = SDL_CreateWindow("sdl2+mixer+image+ttf demo", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, SCREEN_W, SCREEN_H, SDL_WINDOW_SHOWN);
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SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
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// load logos from file
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SDL_Surface *sdllogo = IMG_Load("data/sdl.png");
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if (sdllogo) {
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sdl_pos.w = sdllogo->w;
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sdl_pos.h = sdllogo->h;
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sdllogo_tex = SDL_CreateTextureFromSurface(renderer, sdllogo);
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SDL_FreeSurface(sdllogo);
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}
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SDL_Surface *switchlogo = IMG_Load("data/switch.png");
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if (switchlogo) {
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pos.x = SCREEN_W / 2 - switchlogo->w / 2;
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pos.y = SCREEN_H / 2 - switchlogo->h / 2;
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pos.w = switchlogo->w;
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pos.h = switchlogo->h;
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switchlogo_tex = SDL_CreateTextureFromSurface(renderer, switchlogo);
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SDL_FreeSurface(switchlogo);
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}
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col = rand_range(0, 7);
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SDL_InitSubSystem(SDL_INIT_JOYSTICK);
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SDL_JoystickEventState(SDL_ENABLE);
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SDL_JoystickOpen(0);
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// load font from romfs
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TTF_Font* font = TTF_OpenFont("data/LeroyLetteringLightBeta01.ttf", 36);
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// render text as texture
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SDL_Rect helloworld_rect = { 0, SCREEN_H - 36, 0, 0 };
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helloworld_tex = render_text(renderer, "Hello, world!", font, colors[1], &helloworld_rect);
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// no need to keep the font loaded
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TTF_CloseFont(font);
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SDL_InitSubSystem(SDL_INIT_AUDIO);
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Mix_AllocateChannels(5);
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Mix_OpenAudio(48000, AUDIO_S16, 2, 4096);
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// load music and sounds from files
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music = Mix_LoadMUS("data/background.ogg");
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sound[0] = Mix_LoadWAV("data/pop1.wav");
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sound[1] = Mix_LoadWAV("data/pop2.wav");
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sound[2] = Mix_LoadWAV("data/pop3.wav");
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sound[3] = Mix_LoadWAV("data/pop4.wav");
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if (music)
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Mix_PlayMusic(music, -1);
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while (!exit_requested
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&& appletMainLoop()
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) {
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while (SDL_PollEvent(&event)) {
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if (event.type == SDL_QUIT)
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exit_requested = 1;
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// use joystick
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if (event.type == SDL_JOYBUTTONDOWN) {
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if (event.jbutton.button == JOY_UP)
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if (wait > 0)
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wait--;
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if (event.jbutton.button == JOY_DOWN)
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if (wait < 100)
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wait++;
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if (event.jbutton.button == JOY_PLUS)
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exit_requested = 1;
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if (event.jbutton.button == JOY_B)
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trail =! trail;
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}
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}
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// set position and bounce on the walls
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pos.y += vel_y;
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pos.x += vel_x;
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if (pos.x + pos.w > SCREEN_W) {
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pos.x = SCREEN_W - pos.w;
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vel_x = -rand_range(1, 5);
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col = rand_range(0, 4);
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snd = rand_range(0, 3);
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if (sound[snd])
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Mix_PlayChannel(-1, sound[snd], 0);
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}
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if (pos.x < 0) {
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pos.x = 0;
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vel_x = rand_range(1, 5);
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col = rand_range(0, 4);
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snd = rand_range(0, 3);
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if (sound[snd])
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Mix_PlayChannel(-1, sound[snd], 0);
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}
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if (pos.y + pos.h > SCREEN_H) {
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pos.y = SCREEN_H - pos.h;
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vel_y = -rand_range(1, 5);
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col = rand_range(0, 4);
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snd = rand_range(0, 3);
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if (sound[snd])
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Mix_PlayChannel(-1, sound[snd], 0);
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}
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if (pos.y < 0) {
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pos.y = 0;
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vel_y = rand_range(1, 5);
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col = rand_range(0, 4);
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snd = rand_range(0, 3);
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if (sound[snd])
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Mix_PlayChannel(-1, sound[snd], 0);
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}
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if (!trail) {
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SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0xFF);
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SDL_RenderClear(renderer);
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}
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// put logos on screen
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if (sdllogo_tex)
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SDL_RenderCopy(renderer, sdllogo_tex, NULL, &sdl_pos);
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if (switchlogo_tex) {
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SDL_SetTextureColorMod(switchlogo_tex, colors[col].r, colors[col].g, colors[col].b);
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SDL_RenderCopy(renderer, switchlogo_tex, NULL, &pos);
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}
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// put text on screen
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if (helloworld_tex)
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SDL_RenderCopy(renderer, helloworld_tex, NULL, &helloworld_rect);
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SDL_RenderPresent(renderer);
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SDL_Delay(wait);
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}
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// clean up your textures when you are done with them
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if (sdllogo_tex)
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SDL_DestroyTexture(sdllogo_tex);
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if (switchlogo_tex)
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SDL_DestroyTexture(switchlogo_tex);
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if (helloworld_tex)
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SDL_DestroyTexture(helloworld_tex);
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// stop sounds and free loaded data
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Mix_HaltChannel(-1);
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Mix_FreeMusic(music);
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for (snd = 0; snd < 4; snd++)
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if (sound[snd])
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Mix_FreeChunk(sound[snd]);
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IMG_Quit();
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Mix_CloseAudio();
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TTF_Quit();
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Mix_Quit();
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SDL_Quit();
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romfsExit();
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return 0;
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}
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