2 files changed, 45 insertions, 16 deletions

diff --git a/src/crepe/manager/ReplayManager.cpp b/src/crepe/manager/ReplayManager.cpp
index 81ff114..ab8a5a0 100644
--- a/src/crepe/manager/ReplayManager.cpp
+++ b/src/crepe/manager/ReplayManager.cpp
@@ -37,3 +37,31 @@ void ReplayManager::release(recording_t handle) {
 	this->memory.erase(handle);
 }
 
+void ReplayManager::frame_record() {
+	ComponentManager & components = this->mediator.component_manager;
+	Recording & recording = this->recording;
+
+	recording.frames.push_back(components.save());
+	recording.frame++;
+}
+
+bool ReplayManager::frame_step() {
+	ComponentManager & components = this->mediator.component_manager;
+	Recording & recording = this->recording;
+
+	ComponentManager::Snapshot & frame = recording.frames.at(recording.frame);
+
+	components.restore(frame);
+	recording.frame++;
+
+	if (recording.frame < recording.frames.size()) return false;
+	// end of recording
+	recording.frame = 0;
+	this->state = IDLE;
+	return true;
+}
+
+ReplayManager::State ReplayManager::get_state() const {
+	return this->state;
+}
+
diff --git a/src/crepe/manager/ReplayManager.h b/src/crepe/manager/ReplayManager.h
index 672d093..5794761 100644
--- a/src/crepe/manager/ReplayManager.h
+++ b/src/crepe/manager/ReplayManager.h
@@ -15,33 +15,34 @@ typedef size_t recording_t;
 class ReplayManager : public Manager {
 public:
 	ReplayManager(Mediator & mediator);
-	friend class ReplaySystem;
-
-protected:
-	void record_frame();
-
-private:
-	struct Recording {
-		size_t frame = 0;
-		std::vector<ComponentManager::Snapshot> frames;
-	};
 
+public:
+	void record_start();
+	recording_t record_end();
+	void play(recording_t handle);
+	void release(recording_t handle);
+	
+public:
 	enum State {
 		IDLE,
 		RECORDING,
 		PLAYING,
 	};
+	State get_state() const;
 
+public:
+	void frame_record();
+	bool frame_step();
+
+private:
+	struct Recording {
+		size_t frame = 0;
+		std::vector<ComponentManager::Snapshot> frames;
+	};
 	State state = IDLE;
 	OptionalRef<Recording> recording;
 	recording_t id = -1;
-
 	std::unordered_map<recording_t, std::unique_ptr<Recording>> memory;
-public:
-	void record_start();
-	recording_t record_end();
-	void play(recording_t handle);
-	void release(recording_t handle);
 };
 
 } // namespace crepe