sound support

src/engine.cpp

@@ -14,6 +14,13 @@ Engine::Engine(std::string title, int width, int height)
     renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
 }
 
+void Engine::initSound()
+{
+    // Initialize sound
+    Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 2048);
+    soundInitialized = true;
+}
+
 void Engine::clear(SDL_Color color)
 {
     // Set color
@@ -52,6 +59,12 @@ Engine::~Engine()
     SDL_DestroyRenderer(renderer);
     SDL_DestroyWindow(window);
 
+    // If sound is initialized, quit Mix
+    if (soundInitialized)
+    {
+        Mix_Quit();
+    }
+
     // Quit SDL and TTF
     SDL_Quit();
     TTF_Quit();

src/example-game.cpp

@@ -3,6 +3,7 @@
 
 // Variables
 SDL_Surface* assets;
+Music* music;
 Engine *engine;
 
 // Functions
@@ -20,11 +21,13 @@ void quit()
 int main(int argc, char* argv[])
 {   
     engine = new Engine("Game", 800, 600);
+    engine->initSound();
     engine->targetFrameRate = 60;
 
     // Load assets
     assets = SDL_LoadBMP("example_assets/sprites.bmp");
-
+    music = new Music("example_assets/crystal_zone.mp3");
+    
     // frame map
     std::map<std::string, SDL_Rect> idle = {
             { "idle", { 76, 456, 68, 128 } },
@@ -58,6 +61,9 @@ int main(int argc, char* argv[])
     animations->addAnimation("walk_front", front, 10, false, true, true, true);
     animations->setAnimation("idle");
 
+    // Play music
+    music->play();
+
     // Main loop
     while (true)
     {
@@ -68,32 +74,30 @@ int main(int argc, char* argv[])
         engine->update();
 
         // Exit if window is closed
-        if (engine->input.exit)
+        if (engine->input.exit || engine->input.activeKeys[SDLK_ESCAPE])
         {
             quit();
         }
 
         if (engine->input.activeKeys[SDLK_d])
         {
-            sprite->dstrect.x += 1;
             animations->setAnimation("walk_right");
+            sprite->move({ 1, 0 });
         }
         if (engine->input.activeKeys[SDLK_a])
         {
-            sprite->dstrect.x -= 1;
             animations->setAnimation("walk_left");
-
+            sprite->move({ -1, 0 });
         }
         if (engine->input.activeKeys[SDLK_w])
         {
-            sprite->dstrect.y -= 1;
             animations->setAnimation("walk_back");
+            sprite->move({ 0, -1 });
         }
         if (engine->input.activeKeys[SDLK_s])
         {
-            sprite->dstrect.y += 1;
             animations->setAnimation("walk_front");
-
+            sprite->move({ 0, 1 });
         }
         if (!engine->input.activeKeys[SDLK_d] && !engine->input.activeKeys[SDLK_a] && !engine->input.activeKeys[SDLK_w] && !engine->input.activeKeys[SDLK_s])
         {

src/sound.cpp

@@ -0,0 +1,56 @@
+#include "sound.h"
+
+Music::Music(const char* path)
+{
+    music = Mix_LoadMUS(path);
+}
+
+void Music::play(int loops)
+{
+    Mix_PlayMusic(music, loops);
+}
+
+void Music::pause()
+{
+    Mix_PauseMusic();
+}
+
+void Music::stop()
+{
+    Mix_HaltMusic();
+}
+
+void Music::resume()
+{
+    Mix_ResumeMusic();
+}
+
+void Music::setVolume(int volume)
+{
+    Mix_VolumeMusic(volume);
+}
+
+Music::~Music()
+{
+    Mix_FreeMusic(music);
+}
+
+Effect::Effect(const char* path)
+{
+    effect = Mix_LoadWAV(path);
+}
+
+void Effect::play(int loops, int channel)
+{
+    Mix_PlayChannel(channel, effect, loops);
+}
+
+void Effect::setVolume(int volume)
+{
+    Mix_VolumeChunk(effect, volume);
+}
+
+Effect::~Effect()
+{
+    Mix_FreeChunk(effect);
+}

src/sprite.cpp

@@ -33,9 +33,16 @@ void Sprite::addFrame(std::string name, SDL_Rect rect)
     frames[name] = rect;
 }
 
+void Sprite::setPos(int_vec2 position)
+{
+    dstrect.x = position.x;
+    dstrect.y = position.y;
+}
+
 void Sprite::move(int_vec2 position)
 {
-    dstrect = { position.x, position.y, dstrect.w, dstrect.h };
+    dstrect.x += position.x;
+    dstrect.y += position.y;
 }
 
 int_vec2 Sprite::getSize(std::string frame)