Merge remote-tracking branch 'origin/master' into max/game

1 files changed, 44 insertions, 0 deletions

diff --git a/src/crepe/system/ReplaySystem.h b/src/crepe/system/ReplaySystem.h
new file mode 100644
index 0000000..bbc8d76
--- /dev/null
+++ b/src/crepe/system/ReplaySystem.h
@@ -0,0 +1,44 @@
+#pragma once
+
+#include "../manager/ReplayManager.h"
+#include "../manager/SystemManager.h"
+
+#include "System.h"
+
+namespace crepe {
+
+/**
+ * \brief ReplayManager helper system
+ *
+ * This system records and replays recordings using ReplayManager.
+ */
+class ReplaySystem : public System {
+public:
+	using System::System;
+
+	void fixed_update() override;
+
+private:
+	//! Last ReplayManager state
+	ReplayManager::State last_state = ReplayManager::IDLE;
+
+	/**
+	 * \brief Playback snapshot
+	 *
+	 * When starting playback, the component state is saved and most systems are disabled. This
+	 * struct stores the engine state before ReplayManager::play is called.
+	 */
+	struct Snapshot {
+		ComponentManager::Snapshot components;
+		SystemManager::Snapshot systems;
+	};
+	//! Before playback snapshot
+	Snapshot playback;
+
+	//! Snapshot state and disable systems during playback
+	void playback_begin();
+	//! Restore state from before \c playback_begin()
+	void playback_end();
+};
+
+} // namespace crepe