feat: add audio related functions

Co-authored-by: veliandev <[email protected]>

README.md

@@ -4,7 +4,7 @@
 [![API Docs](https://img.shields.io/badge/api-docs-blue.svg?style=flat)](https://hexdocs.pm/rayex/)
 [![Run Tests](https://github.com/shiryel/rayex/actions/workflows/test.yml/badge.svg)](https://github.com/shiryel/rayex/actions/workflows/test.yml)
 
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+[![BlueSky](https://img.shields.io/badge/bsky-follow-blue.svg?logo=data:image/svg%2bxml;base64,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)](https://shiryel.bsky.social)
 
 Rayex provides Elixir NIF bindings to [Raylib](https://www.raylib.com/)
 

c_src/rayex/rayex.c

@@ -1,6 +1,28 @@
 #include "rayex.h"
 #include <raylib.h>
 
+/*
+ * Payloads let us ignore some structs when binding data from Elixir <-> C
+ * But will make the data unavailable on the elixir side!
+ */
+#define CREATE_UNIFEX_PAYLOAD_FOR(T, name)                                     \
+  UnifexPayload create_##name##_unifex_payload(UnifexEnv *env, T value) {      \
+    UnifexPayload payload;                                                     \
+    unifex_payload_alloc(env, UNIFEX_PAYLOAD_BINARY, sizeof(value), &payload); \
+    memcpy(payload.data, &value, payload.size);                                \
+    return payload;                                                            \
+  }                                                                            \
+                                                                               \
+  T get_##name##_unifex_payload(UnifexEnv *env, UnifexPayload *in_payload) {   \
+    UnifexPayload out_payload;                                                 \
+    unifex_payload_alloc(env, UNIFEX_PAYLOAD_BINARY, in_payload->size,         \
+                         &out_payload);                                        \
+    memcpy(out_payload.data, in_payload->data, out_payload.size);              \
+    T result;                                                                  \
+    memcpy(&result, out_payload.data, out_payload.size);                       \
+    return result;                                                             \
+  }
+
 // NOTE: "E_" when converting back to NIF struct
 
 #define VECTOR2(v) ((Vector2){.x = v.x, .y = v.y})
@@ -581,12 +603,66 @@ UNIFEX_TERM draw_grid(UnifexEnv *env, int slices, double spacing) {
 
 // Audio device management functions
 
+UNIFEX_TERM init_audio_device(UnifexEnv *env) {
+  InitAudioDevice();
+  return init_audio_device_result_ok(env);
+}
+
+UNIFEX_TERM close_audio_device(UnifexEnv *env) {
+  CloseAudioDevice();
+  return close_audio_device_result_ok(env);
+}
+
+UNIFEX_TERM is_audio_device_ready(UnifexEnv *env) {
+  bool res = IsAudioDeviceReady();
+  return is_audio_device_ready_result(env, res);
+}
+
+UNIFEX_TERM set_master_volume(UnifexEnv *env, double volume) {
+  SetMasterVolume((float)volume);
+  return set_master_volume_result_ok(env);
+}
+
+UNIFEX_TERM get_master_volume(UnifexEnv *env) {
+  float res = GetMasterVolume();
+  return get_master_volume_result(env, res);
+}
+
 // Wave/Sound loading/unloading functions
 
+CREATE_UNIFEX_PAYLOAD_FOR(Sound, sound)
+
+UNIFEX_TERM load_sound(UnifexEnv *env, char *fileName) {
+  Sound sound = LoadSound(fileName);
+  UnifexPayload payload = create_sound_unifex_payload(env, sound);
+  UNIFEX_TERM result = load_sound_result(env, &payload);
+  unifex_payload_release(&payload);
+
+  return result;
+}
+
 // Wave/Sound management functions
 
 // Music management functions
 
+UNIFEX_TERM play_sound(UnifexEnv *env, UnifexPayload *payload) {
+  Sound sound = get_sound_unifex_payload(env, payload);
+  PlaySound(sound);
+  return play_sound_result_ok(env);
+}
+
+UNIFEX_TERM stop_sound(UnifexEnv *env, UnifexPayload *payload) {
+  Sound sound = get_sound_unifex_payload(env, payload);
+  StopSound(sound);
+  return stop_sound_result_ok(env);
+}
+
+UNIFEX_TERM is_sound_ready(UnifexEnv *env, UnifexPayload *payload) {
+  Sound sound = get_sound_unifex_payload(env, payload);
+  bool res = IsSoundReady(sound);
+  return is_sound_ready_result(env, res);
+}
+
 // AudioStream management functions
 
 /***********

c_src/rayex/rayex.spec.exs

@@ -227,11 +227,24 @@ spec draw_grid(slices :: int, spacing :: float) :: :ok :: label
 #########
 
 # Audio device management functions
+spec init_audio_device() :: :ok :: label
+spec close_audio_device() :: :ok :: label
+spec is_audio_device_ready() :: result :: bool
+spec set_master_volume(volume :: float) :: :ok :: label
+spec get_master_volume() :: volume :: float
 
 # Wave/Sound loading/unloading functions
 
+spec load_sound(file_name :: string) :: sound :: payload
+dirty(:io, load_sound: 1)
+
+spec is_sound_ready(sound :: payload) :: result :: bool
+
 # Wave/Sound management functions
 
+spec play_sound(sound :: payload) :: :ok :: label
+spec stop_sound(sound :: payload) :: :ok :: label
+
 # Music management functions
 
 # AudioStream management functions
@@ -490,23 +503,21 @@ type wave :: %Rayex.Structs.Wave{
        data: payload
      }
 
-# FIXME: ? https://github.com/raysan5/raylib/blob/master/src/raylib.h#L428
-type r_audio_buffer :: %Rayex.Structs.RAudioBuffer{}
-
-type audio_stream :: %Rayex.Structs.AudioStream{
-       buffer: [r_audio_buffer],
-       sample_rate: unsigned,
-       sample_size: unsigned,
-       channels: unsigned
-     }
-
-type sound :: %Rayex.Structs.Sound{
-       stream: audio_stream,
-       frame_count: unsigned
-     }
+# type audio_stream :: %Rayex.Structs.AudioStream{
+#       buffer: [r_audio_buffer],
+#       processor: [r_audio_processor],
+#       sample_rate: unsigned,
+#       sample_size: unsigned,
+#       channels: unsigned
+#     }
+#
+# type sound :: %Rayex.Structs.Sound{
+#       stream: audio_stream,
+#       frame_count: unsigned
+#     }
 
 type music :: %Rayex.Structs.Music{
-       stream: audio_stream,
+       stream: payload,
        frame_count: unsigned,
        looping: bool,
        ctx_type: int,

examples/audio.exs

@@ -0,0 +1,77 @@
+#!elixir
+
+Mix.install([
+  {:rayex, path: ".."}
+])
+
+defmodule Test do
+  @moduledoc false
+
+  alias Rayex.Structs, as: S
+
+  use Rayex
+  use Rayex.Keys
+
+  @camera_first_person 4
+  @color_white %S.Color{r: 245, g: 245, b: 245, a: 255}
+  @color_darkgray %S.Color{r: 80, g: 80, b: 80, a: 255}
+
+  def run do
+    init_window(800, 450, "raylib [core] example - 3d picking")
+    set_target_fps(60)
+
+    camera = %S.Camera3D{
+      position: %S.Vector3{x: 6.0, y: 6.0, z: 6.0},
+      target: %S.Vector3{x: 0.0, y: 2.0, z: 0.0},
+      up: %S.Vector3{x: 0.0, y: 1.0, z: 0.0},
+      fovy: 45.0,
+      # perspective projection
+      projection: 0
+    }
+
+    camera = update_camera(camera, @camera_first_person)
+    init_audio_device()
+    sound = load_sound("resources/audio/country.mp3")
+    play_sound(sound)
+
+    game_loop(%{camera: camera, sound: sound, pause: false})
+  end
+
+  defp game_loop(%{camera: camera, sound: sound, pause: pause} = state) do
+    camera = update_camera(camera, @camera_first_person)
+
+    pause =
+      if is_key_pressed?(key_space()) do
+        (!pause && stop_sound(sound)) || play_sound(sound)
+        !pause
+      else
+        pause
+      end
+
+    state = draw(%{state | camera: camera, pause: pause})
+
+    (window_should_close() && close_window()) || game_loop(state)
+  end
+
+  defp draw(%{camera: camera} = state) do
+    begin_drawing()
+    clear_background(@color_white)
+
+    # --- 3D ---
+    begin_mode_3d(camera)
+
+    draw_grid(10, 1.0)
+
+    end_mode_3d()
+    # --- 3D ---
+
+    draw_text("PRESS SPACE TO PAUSE/RESUME MUSIC", 200, 10, 20, @color_darkgray)
+    draw_fps(10, 10)
+
+    end_drawing()
+
+    state
+  end
+end
+
+Test.run()

examples/resources/audio/LICENSE.md

@@ -0,0 +1,3 @@
+| resource             | author      | licence | notes |
+| :------------------- | :---------: | :------ | :---- |
+| country.mp3          | [@emegeme](https://github.com/emegeme) | [CC0](https://creativecommons.org/publicdomain/zero/1.0/) | Originally created for "DART that TARGET" game |

flake.nix

@@ -20,7 +20,6 @@
         ];
         buildInputs = with pkgs; [
           raylib
-          glibc
         ];
         shellHook = ''
           export CPATH="$(erl -eval 'io:format("~s", [lists:concat([code:root_dir(), "/erts-", erlang:system_info(version), "/include"])])' -s init stop -noshell):`pwd`/deps/unifex/c_src/unifex/nif"

lib/rayex/audio.ex

@@ -3,12 +3,43 @@ defmodule Rayex.Audio do
     Audio related functions
   """
 
+  alias Rayex.Structs, as: S
+  alias Rayex.Unifex.Raylib
+
   # Audio device management functions
 
+  @doc "Initialize audio device and context"
+  @spec init_audio_device() :: :ok
+  defdelegate init_audio_device(), to: Raylib
+
+  @doc "Check if audio device has been initialized successfully"
+  @spec is_audio_device_ready?() :: boolean()
+  defdelegate is_audio_device_ready?(), to: Raylib, as: :is_audio_device_ready
+
+  @doc "Set master volume (listener)"
+  @spec set_master_volume(float()) :: :ok
+  defdelegate set_master_volume(volume), to: Raylib
+
   # Wave/Sound loading/unloading functions
 
+  @doc "Load sound from file"
+  @spec load_sound(String.t()) :: S.Sound.t()
+  defdelegate load_sound(fileName), to: Raylib
+
+  @doc "Checks if a sound is ready"
+  @spec is_sound_ready?(S.Sound.t()) :: boolean()
+  defdelegate is_sound_ready?(sound), to: Raylib, as: :is_sound_ready
+
   # Wave/Sound management functions
 
+  @doc "Play a sound"
+  @spec play_sound(S.Sound.t()) :: :ok
+  defdelegate play_sound(sound), to: Raylib
+
+  @doc "Stop a sound"
+  @spec stop_sound(S.Sound.t()) :: :ok
+  defdelegate stop_sound(sound), to: Raylib
+
   # Music management functions
 
   # AudioStream management functions

lib/rayex/structs.ex

@@ -315,14 +315,14 @@ end
 
 defmodule Rayex.Structs.Model do
   @moduledoc "Model"
-  @enforce_keys ~w[transform mesh_count material_count mashes materials mesh_material bone_count bones bind_pose]a
-  defstruct ~w[transform mesh_count material_count mashes materials mesh_material bone_count bones bind_pose]a
+  @enforce_keys ~w[transform mesh_count material_count meshes materials mesh_material bone_count bones bind_pose]a
+  defstruct ~w[transform mesh_count material_count meshes materials mesh_material bone_count bones bind_pose]a
 
   @type t :: %__MODULE__{
           transform: Rayex.Structs.Matrix.t(),
           mesh_count: integer(),
           material_count: integer(),
-          mashes: [Rayex.Structs.Mesh.t()],
+          meshes: [Rayex.Structs.Mesh.t()],
           materials: [Rayex.Structs.Material.t()],
           mesh_material: [integer()],
           bone_count: integer(),
@@ -394,37 +394,35 @@ defmodule Rayex.Structs.Wave do
         }
 end
 
-# XXX: ? https://github.com/raysan5/raylib/blob/master/src/raylib.h#L428
-defmodule Rayex.Structs.RAudioBuffer do
-  @moduledoc "RAudioBuffer"
-  @enforce_keys ~w[]a
-  defstruct ~w[]a
-
-  @type t :: %__MODULE__{}
-end
-
-defmodule Rayex.Structs.AudioStream do
-  @moduledoc "AudioStream"
-  @enforce_keys ~w[buffer sample_rate sample_size channels]a
-  defstruct ~w[buffer sample_rate sample_size channels]a
-
-  @type t :: %__MODULE__{
-          buffer: [Rayex.Structs.RAudioBuffer.t()],
-          sample_rate: non_neg_integer(),
-          sample_size: non_neg_integer(),
-          channels: non_neg_integer()
-        }
-end
+# defmodule Rayex.Structs.AudioStream do
+#  @moduledoc "AudioStream"
+#  @enforce_keys ~w[buffer processor sample_rate sample_size channels]a
+#  defstruct ~w[buffer processor sample_rate sample_size channels]a
+#
+#  @type t :: %__MODULE__{
+#          buffer: unifex_payload :: binary(),
+#          processor: unifex_payload :: binary(),
+#          sample_rate: non_neg_integer(),
+#          sample_size: non_neg_integer(),
+#          channels: non_neg_integer()
+#        }
+# end
+#
+# defmodule Rayex.Structs.Sound do
+#  @moduledoc "Sound"
+#  @enforce_keys ~w[stream frame_count]a
+#  defstruct ~w[stream frame_count]a
+#
+#  @type t :: %__MODULE__{
+#          stream: Rayex.Structs.AudioStream.t(),
+#          frame_count: non_neg_integer()
+#        }
+# end
 
 defmodule Rayex.Structs.Sound do
   @moduledoc "Sound"
-  @enforce_keys ~w[stream frame_count]a
-  defstruct ~w[stream frame_count]a
 
-  @type t :: %__MODULE__{
-          stream: Rayex.Structs.AudioStream.t(),
-          frame_count: non_neg_integer()
-        }
+  @type t :: binary()
 end
 
 defmodule Rayex.Structs.Music do
@@ -433,7 +431,7 @@ defmodule Rayex.Structs.Music do
   defstruct ~w[stream frame_count looping ctx_type ctx_data]a
 
   @type t :: %__MODULE__{
-          stream: Rayex.Structs.AudioStream.t(),
+          stream: binary(),
           frame_count: non_neg_integer(),
           looping: boolean(),
           ctx_type: integer(),