Add background music

NOTICE

@@ -1,7 +1,8 @@
 Assets used by this project:
 
-- "Fruit+" by SciGho — https://ninjikin.itch.io/fruit
+- "Fruit+" by SciGho - https://ninjikin.itch.io/fruit
   License: https://creativecommons.org/licenses/by/4.0/
 - "Jungle Background (Parallax)" by TrashBoat93
   URL: https://trashboat93.itch.io/jungle-background-parallax
-
+- "Jamaican Sunrise - Reggae" by DavidKBD
+  URL: https://davidkbd.itch.io/tropical-dreams-spring-and-summer-music-pack

assets.cpp

@@ -1,4 +1,5 @@
 #include "assets.hpp"
+#include "audio.hpp"
 #include "sdl_types.hpp"
 
 #include <SDL3_image/SDL_image.h>
@@ -6,11 +7,15 @@
 #include <spdlog/spdlog.h>
 
 static constexpr uint8_t BACKGROUND_DATA[] = {
-#embed "jungle.jpg"
+#embed "assets/images/jungle.jpg"
 };
 
 static constexpr uint8_t FRUITS_DATA[] = {
-#embed "fruits.jpg"
+#embed "assets/images/fruits.jpg"
+};
+
+static constexpr uint8_t BACKGROUND_MUSIC_DATA[] = {
+#embed "assets/sounds/JamaicanSunrise.wav"
 };
 
 SDL_Texture *load_texture(uint8_t const *data, size_t size,
@@ -24,6 +29,18 @@ SDL_Texture *load_texture(uint8_t const *data, size_t size,
   return texture;
 }
 
+AudioAsset load_audio(uint8_t const *data, size_t size) {
+  AudioAsset audio_asset;
+
+  auto *iostream = SDL_IOFromConstMem(data, size);
+  bool res = SDL_LoadWAV_IO(iostream, false, &audio_asset.spec,
+                            &audio_asset.buffer, &audio_asset.buffer_length);
+  if (!res) {
+    spdlog::error("Failed to load audio file!\nCause: {}", SDL_GetError());
+  }
+  return audio_asset;
+}
+
 void init_assets(flecs::world &world) {
   auto *renderer = world.get<SdlHandles>()->renderer;
 
@@ -41,4 +58,8 @@ void init_assets(flecs::world &world) {
                             .texture_atlas_layout = background_layout},
       .fruits = Texture{.sdl_texture = fruits,
                         .texture_atlas_layout = fruits_layout}});
+
+  auto background_music =
+      load_audio(BACKGROUND_MUSIC_DATA, sizeof(BACKGROUND_MUSIC_DATA));
+  world.set<AudioAssets>(AudioAssets{.background_music = background_music});
 }

assets.hpp

@@ -1,5 +1,7 @@
 #pragma once
 
+#include "audio.hpp"
+
 #include <SDL3/SDL.h>
 #include <flecs.h>
 
@@ -20,4 +22,8 @@ struct TextureAssets {
   Texture fruits;
 };
 
+struct AudioAssets {
+  AudioAsset background_music;
+};
+
 void init_assets(flecs::world &world);

audio.hpp

@@ -0,0 +1,10 @@
+#pragma once
+
+#include <SDL3/SDL.h>
+#include <cstdint>
+
+struct AudioAsset {
+  SDL_AudioSpec spec;
+  uint8_t *buffer;
+  uint32_t buffer_length;
+};

main.cpp

@@ -34,7 +34,7 @@ int main() {
 
   SDL_SetHint(SDL_HINT_RENDER_VSYNC, "1");
 
-  if (!SDL_Init(SDL_INIT_VIDEO)) {
+  if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO)) {
     spdlog::critical("Failed to initialize SDL!\nCause: {}", SDL_GetError());
     std::terminate();
   }
@@ -152,6 +152,15 @@ int main() {
         pos.y += vel.y;
       });
 
+    auto *audio_assets = world.get<AudioAssets>();
+    auto *stream = SDL_OpenAudioDeviceStream(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, &audio_assets->background_music.spec, NULL, NULL);
+    if (!stream) {
+        SDL_Log("Couldn't create audio stream: %s", SDL_GetError());
+        return SDL_APP_FAILURE;
+    }
+
+    SDL_ResumeAudioStreamDevice(stream);
+
   bool exit_gameloop = false;
   while (!exit_gameloop) {
     auto *input = world.get_mut<ButtonInput>();
@@ -184,6 +193,9 @@ int main() {
     }
 
     // Game Logic
+    if (SDL_GetAudioStreamQueued(stream) < (int)audio_assets->background_music.buffer_length) {
+        SDL_PutAudioStreamData(stream, audio_assets->background_music.buffer, audio_assets->background_music.buffer_length);
+    }
 
     // Render
     SDL_RenderClear(renderer);