1 files changed, 70 insertions, 0 deletions
diff --git a/src/crepe/manager/ReplayManager.cpp b/src/crepe/manager/ReplayManager.cpp
new file mode 100644
index 0000000..090a94e
--- /dev/null
+++ b/src/crepe/manager/ReplayManager.cpp
@@ -0,0 +1,70 @@
+#include <format>
+
+#include "Manager.h"
+#include "ReplayManager.h"
+
+using namespace crepe;
+using namespace std;
+
+ReplayManager::ReplayManager(Mediator & mediator) : Manager(mediator) {
+	mediator.replay_manager = *this;
+}
+
+void ReplayManager::record_start() {
+	if (this->state == RECORDING) this->release(this->id);
+	this->id++;
+	this->memory[this->id] = make_unique<Recording>();
+	this->recording = *this->memory.at(this->id);
+	this->state = RECORDING;
+}
+
+recording_t ReplayManager::record_end() {
+	this->state = IDLE;
+	return this->id;
+}
+
+void ReplayManager::play(recording_t handle) {
+	if (!this->memory.contains(handle))
+		throw out_of_range(format("ReplayManager: no recording for handle {}", handle));
+	this->recording = *this->memory.at(handle);
+	this->recording->frame = 0;
+	this->state = PLAYING;
+}
+
+void ReplayManager::release(recording_t handle) {
+	if (!this->memory.contains(handle)) return;
+	this->memory.erase(handle);
+}
+
+void ReplayManager::frame_record() {
+	if (this->state != RECORDING)
+		throw runtime_error("ReplayManager: frame_step called while not playing");
+
+	ComponentManager & components = this->mediator.component_manager;
+	Recording & recording = this->recording;
+
+	recording.frames.push_back(components.save());
+	recording.frame++;
+}
+
+bool ReplayManager::frame_step() {
+	if (this->state != PLAYING)
+		throw runtime_error("ReplayManager: frame_step called while not playing");
+
+	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;
+	this->recording.clear();
+	return true;
+}
+
+ReplayManager::State ReplayManager::get_state() const { return this->state; }