From b9694e8cc6b85a0089f97ff3c21862adc75a7ee5 Mon Sep 17 00:00:00 2001
From: Loek Le Blansch <loek@pipeframe.xyz>
Date: Wed, 11 Dec 2024 21:49:32 +0100
Subject: working proof of concept replay system

---
 src/crepe/manager/SystemManager.cpp | 22 ++++++++++++++++++++++
 src/crepe/manager/SystemManager.h   |  6 ++++++
 2 files changed, 28 insertions(+)

(limited to 'src/crepe/manager')

diff --git a/src/crepe/manager/SystemManager.cpp b/src/crepe/manager/SystemManager.cpp
index 8fd80a7..db7430e 100644
--- a/src/crepe/manager/SystemManager.cpp
+++ b/src/crepe/manager/SystemManager.cpp
@@ -8,6 +8,7 @@
 #include "../system/RenderSystem.h"
 #include "../system/ScriptSystem.h"
 #include "../system/EventSystem.h"
+#include "../system/ReplaySystem.h"
 
 #include "SystemManager.h"
 
@@ -15,6 +16,7 @@ using namespace crepe;
 using namespace std;
 
 SystemManager::SystemManager(Mediator & mediator) : Manager(mediator) {
+	this->load_system<ReplaySystem>();
 	this->load_system<ScriptSystem>();
 	this->load_system<AISystem>();
 	this->load_system<PhysicsSystem>();
@@ -43,3 +45,23 @@ void SystemManager::frame_update() {
 	}
 }
 
+SystemManager::Snapshot SystemManager::save() {
+	Snapshot snapshot;
+	for (auto & [type, system] : this->systems) {
+		snapshot[type] = system->active;
+	}
+	return snapshot;
+}
+
+void SystemManager::restore(const Snapshot & snapshot) {
+	for (auto & [type, active] : snapshot) {
+		this->systems[type]->active = active;
+	}
+}
+
+void SystemManager::disable_all() {
+	for (auto & [type, system] : this->systems) {
+		system->active = false;
+	}
+}
+
diff --git a/src/crepe/manager/SystemManager.h b/src/crepe/manager/SystemManager.h
index 5726a5c..6cf7f2b 100644
--- a/src/crepe/manager/SystemManager.h
+++ b/src/crepe/manager/SystemManager.h
@@ -48,6 +48,12 @@ public:
 	 */
 	template <class T>
 	T & get_system();
+
+public:
+	typedef std::unordered_map<std::type_index, bool> Snapshot;
+	Snapshot save();
+	void restore(const Snapshot & snapshot);
+	void disable_all();
 };
 
 } // namespace crepe
-- 
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