6 files changed, 61 insertions, 3 deletions
diff --git a/src/crepe/system/AudioSystem.cpp b/src/crepe/system/AudioSystem.cpp
new file mode 100644
index 0000000..9fdd7eb
--- /dev/null
+++ b/src/crepe/system/AudioSystem.cpp
@@ -0,0 +1,22 @@
+#include "AudioSystem.h"
+#include "ComponentManager.h"
+
+#include "../api/AudioSource.h"
+
+using namespace crepe;
+using namespace std;
+
+AudioSystem::AudioSystem(SoundContext & ctx) : ctx(ctx) {}
+
+void AudioSystem::update() {
+	vector<reference_wrapper<AudioSource>> components = this->compmgr.get_components_by_type<AudioSource>();
+
+	for (auto component_ref : components) {
+		AudioSource & component = component_ref.get();
+		if (!component.active) continue;
+
+		// TODO: fetch Sound instance from resourcemanager
+		// TODO: lots of state diffing
+	}
+}
+
diff --git a/src/crepe/system/AudioSystem.h b/src/crepe/system/AudioSystem.h
new file mode 100644
index 0000000..e037f51
--- /dev/null
+++ b/src/crepe/system/AudioSystem.h
@@ -0,0 +1,19 @@
+#pragma once
+
+#include "../facade/SoundContext.h"
+
+#include "System.h"
+
+namespace crepe {
+
+class AudioSystem : public System {
+public:
+	using System::System;
+	void update() override;
+
+private:
+	SoundContext context {};
+};
+
+} // namespace crepe
+
diff --git a/src/crepe/system/CMakeLists.txt b/src/crepe/system/CMakeLists.txt
index 4c18b87..f507b90 100644
--- a/src/crepe/system/CMakeLists.txt
+++ b/src/crepe/system/CMakeLists.txt
@@ -1,9 +1,11 @@
 target_sources(crepe PUBLIC
+	System.cpp
 	ParticleSystem.cpp
 	ScriptSystem.cpp
 	PhysicsSystem.cpp
 	CollisionSystem.cpp
 	RenderSystem.cpp
+	AudioSystem.cpp
 	AnimatorSystem.cpp
 )
 
@@ -13,5 +15,6 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES
 	PhysicsSystem.h
 	CollisionSystem.h
 	RenderSystem.h
+	AudioSystem.h
 	AnimatorSystem.h
 )
diff --git a/src/crepe/system/ScriptSystem.cpp b/src/crepe/system/ScriptSystem.cpp
index f2673e7..68fbb02 100644
--- a/src/crepe/system/ScriptSystem.cpp
+++ b/src/crepe/system/ScriptSystem.cpp
@@ -22,9 +22,8 @@ void ScriptSystem::update() {
 
 forward_list<Script *> ScriptSystem::get_scripts() {
 	forward_list<Script *> scripts = {};
-	ComponentManager & mgr = ComponentManager::get_instance();
 	vector<reference_wrapper<BehaviorScript>> behavior_scripts
-		= mgr.get_components_by_type<BehaviorScript>();
+		= this->compmgr.get_components_by_type<BehaviorScript>();
 
 	for (auto behavior_script_ref : behavior_scripts) {
 		BehaviorScript & behavior_script = behavior_script_ref.get();
diff --git a/src/crepe/system/System.cpp b/src/crepe/system/System.cpp
new file mode 100644
index 0000000..fa51d2f
--- /dev/null
+++ b/src/crepe/system/System.cpp
@@ -0,0 +1,7 @@
+#include "System.h"
+
+using namespace crepe;
+
+// TODO: ComponentManager shouldn't be a singleton
+System::System() : compmgr(ComponentManager::get_instance()) {}
+
diff --git a/src/crepe/system/System.h b/src/crepe/system/System.h
index 3b81bef..5091977 100644
--- a/src/crepe/system/System.h
+++ b/src/crepe/system/System.h
@@ -1,14 +1,22 @@
 #pragma once
 
+#include "../ComponentManager.h"
+
 namespace crepe {
 
+//! ECS system base class
 class System {
 public:
+	//! Process components belonging to this system
 	virtual void update() = 0;
 
 public:
-	System() = default;
+	System();
 	virtual ~System() = default;
+
+public:
+	//! Reference to component manager
+	ComponentManager & compmgr;
 };
 
 } // namespace crepe