From 38ffef0320a70909f3e13e9681e4720352e440aa Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 30 Oct 2022 00:13:27 +0300
Subject: [PATCH] Add a function to remove a system from a stage

---
 source/game/stage.cpp | 5 +++++
 source/game/stage.h   | 1 +
 2 files changed, 6 insertions(+)

diff --git a/source/game/stage.cpp b/source/game/stage.cpp
index 779be6e..0eb4238 100644
--- a/source/game/stage.cpp
+++ b/source/game/stage.cpp
@@ -14,6 +14,11 @@ Stage::Stage(DataFile::Collection &r):
 Stage::~Stage()
 { }
 
+void Stage::remove_system(System &s)
+{
+	erase_if(systems, [&s](auto &p){ return p.get()==&s; });
+}
+
 void Stage::tick(Time::TimeDelta dt)
 {
 	for(const auto &s: systems)
diff --git a/source/game/stage.h b/source/game/stage.h
index 6af3b60..d2d05dd 100644
--- a/source/game/stage.h
+++ b/source/game/stage.h
@@ -46,6 +46,7 @@ public:
 	template<typename T, typename... Args>
 	T &add_system(Args &&...);
 
+	void remove_system(System &);
 	const std::vector<std::unique_ptr<System>> &get_systems() const { return systems; }
 
 	template<typename T>
-- 
2.43.0