1 files changed, 54 insertions, 0 deletions
diff --git a/src/crepe/system/ReplaySystem.cpp b/src/crepe/system/ReplaySystem.cpp
new file mode 100644
index 0000000..2b2e4ab
--- /dev/null
+++ b/src/crepe/system/ReplaySystem.cpp
@@ -0,0 +1,54 @@
+#include "../manager/ReplayManager.h"
+#include "../manager/SystemManager.h"
+
+#include "RenderSystem.h"
+#include "ReplaySystem.h"
+#include "EventSystem.h"
+
+using namespace crepe;
+using namespace std;
+
+void ReplaySystem::fixed_update() {
+	ReplayManager & replay = this->mediator.replay_manager;
+	ReplayManager::State state = replay.get_state();
+	ReplayManager::State last_state = this->last_state;
+	this->last_state = state;
+
+	switch (state) {
+		case ReplayManager::IDLE: break;
+		case ReplayManager::RECORDING: {
+			replay.frame_record();
+			break;
+		}
+		case ReplayManager::PLAYING: {
+			if (last_state != ReplayManager::PLAYING) this->playback_begin();
+			bool last = replay.frame_step();
+			if (last) this->playback_end();
+			break;
+		}
+	}
+}
+
+void ReplaySystem::playback_begin() {
+	SystemManager & systems = this->mediator.system_manager;
+	ComponentManager & components = this->mediator.component_manager;
+
+	this->playback = {
+		.components = components.save(),
+		.systems = systems.save(),
+	};
+
+	systems.disable_all();
+	systems.get_system<RenderSystem>().active = true;
+	systems.get_system<ReplaySystem>().active = true;
+	systems.get_system<EventSystem>().active = true;
+}
+
+void ReplaySystem::playback_end() {
+	SystemManager & systems = this->mediator.system_manager;
+	ComponentManager & components = this->mediator.component_manager;
+
+	components.restore(this->playback.components);
+	systems.restore(this->playback.systems);
+}
+