Introduced a mixer and one click sound.

.appveyor.yml

@@ -45,6 +45,15 @@ before_build:
     %DEPENDS% copy SDL2_ttf-2.0.14\%ARCH%\lib\*.a %PREFIX%\lib > nul
     %DEPENDS% copy SDL2_ttf-2.0.14\%ARCH%\bin\*.dll %PREFIX%\lib > nul
 
+  # SDL2_mixer
+  - |-
+    %DEPENDS% appveyor DownloadFile https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-devel-2.0.2-mingw.tar.gz
+    %DEPENDS% 7z x SDL2_mixer-devel-2.0.2-mingw.tar.gz > nul
+    %DEPENDS% 7z x SDL2_mixer-devel-2.0.2-mingw.tar > nul
+    %DEPENDS% copy SDL2_mixer-2.0.2\%ARCH%\include\SDL2\* %PREFIX%\include\SDL2 > nul
+    %DEPENDS% copy SDL2_mixer-2.0.2\%ARCH%\lib\*.a %PREFIX%\lib > nul
+    %DEPENDS% copy SDL2_mixer-2.0.2\%ARCH%\bin\*.dll %PREFIX%\lib > nul
+
   # Lua
   - ps: (New-Object Net.WebClient).DownloadFile("https://sourceforge.net/projects/luabinaries/files/5.3.4/Windows%20Libraries/Static/lua-5.3.4_Win32_mingw4_lib.zip/download", "c:\lua\lua-5.3.4_Win32_mingw4_lib.zip")
   - |-

CMakeLists.txt

@@ -8,6 +8,7 @@ include(FindLua)
 include(cmake/FindSDL2.cmake)
 include(cmake/FindSDL2_image.cmake)
 include(cmake/FindSDL2_ttf.cmake)
+include(cmake/FindSDL2_mixer.cmake)
 
 if (NOT WIN32)
 	include(FindX11)
@@ -25,6 +26,7 @@ include_directories(
 	${SDL2_INCLUDE_DIR}
 	${SDL2_IMAGE_INCLUDE_DIR}
 	${SDL2_TTF_INCLUDE_DIR}
+	${SDL2_MIXER_INCLUDE_DIR}
 	)
 
 if (NOT WIN32)
@@ -74,6 +76,7 @@ add_executable(breakhack
 	src/menu
 	src/collisions
 	src/keyboard
+	src/mixer
 	)
 
 target_link_libraries(breakhack
@@ -81,6 +84,7 @@ target_link_libraries(breakhack
 	${SDL2_LIBRARY}
 	${SDL2_IMAGE_LIBRARY}
 	${SDL2_TTF_LIBRARY}
+	${SDL2_MIXER_LIBRARY}
 	)
 
 if (NOT WIN32)

src/main.c

@@ -21,6 +21,7 @@
 #include "particle_engine.h"
 #include "menu.h"
 #include "keyboard.h"
+#include "mixer.h"
 
 static SDL_Window	*gWindow	= NULL;
 static SDL_Renderer	*gRenderer	= NULL;
@@ -70,7 +71,7 @@ bool initSDL(void)
 		info("Scaling by %f", renderScale);
 	}
 
-	if (SDL_Init(SDL_INIT_VIDEO) < 0)
+	if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0)
 	{
 		error("Could not initiate SDL2: %s", SDL_GetError());
 		return false;
@@ -88,6 +89,8 @@ bool initSDL(void)
 		return false;
 	}
 
+	mixer_init();
+
 	gWindow = SDL_CreateWindow("Breakhack",
 				   SDL_WINDOWPOS_UNDEFINED,
 				   SDL_WINDOWPOS_UNDEFINED, 
@@ -541,6 +544,7 @@ void close(void)
 	particle_engine_close();
 	timer_destroy(menuTimer);
 
+	mixer_close();
 	SDL_DestroyRenderer(gRenderer);
 	SDL_DestroyWindow(gWindow);
 	gWindow = NULL;

src/menu.c

@@ -6,6 +6,7 @@
 #include "defines.h"
 #include "gui_button.h"
 #include "keyboard.h"
+#include "mixer.h"
 
 typedef struct MenuItems_t {
 	Sprite *sprite;
@@ -47,6 +48,9 @@ menu_handle_event(Menu *m, SDL_Event *event)
 		return;
 	}
 
+	if (reset_buttons)
+		mixer_play_effect(CLICK);
+
 	int current_select = 0;
 	bool mouse_selection = false;
 	items = m->items;

src/mixer.c

@@ -0,0 +1,48 @@
+#include <SDL2/SDL_mixer.h>
+#include "mixer.h"
+#include "util.h"
+
+static Mix_Music *music = NULL;
+static Mix_Chunk *effects[LAST_EFFECT];
+
+static Mix_Chunk*
+load_effect(char *path)
+{
+	Mix_Chunk *effect = Mix_LoadWAV(path);
+	if (effect == NULL)
+		fatal("Failed to load effect: %s", path);
+	return effect;
+}
+
+static void
+load_effects(void)
+{
+	effects[CLICK] = load_effect("assets/Sounds/FX/click.wav");
+}
+
+void
+mixer_init(void)
+{
+	if (Mix_OpenAudio( 44100, MIX_DEFAULT_FORMAT, 2, 2048 ) == -1) {
+		fatal("Failed to load SDL2_mixer");
+	}
+	load_effects();
+}
+
+void
+mixer_play_effect(Fx fx)
+{
+	if (Mix_PlayChannel( -1, effects[fx], 0) == -1)
+		error("Unable to play sound: %u", (unsigned int) fx);
+}
+
+void
+mixer_close(void)
+{
+	for (size_t i = 0; i < LAST_EFFECT; ++i) {
+		Mix_FreeChunk(effects[i]);
+	}
+	if (music)
+		Mix_FreeMusic(music);
+	Mix_CloseAudio();
+}

src/mixer.h

@@ -0,0 +1,20 @@
+#ifndef MIXER_H_
+#define	MIXER_H_
+
+#include <stdbool.h>
+
+typedef enum Fx_t {
+	CLICK,
+	LAST_EFFECT
+} Fx;
+
+void
+mixer_init(void);
+
+void
+mixer_play_effect(Fx fx);
+
+void
+mixer_close(void);
+
+#endif // MIXER_H_