From 235f128136c7c23a64fa5f0424edf05879b8ee9b Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Thu, 28 Jan 2021 18:51:30 +0000
Subject: Input stack and logical split of camera controller

---
 utility/collection.hpp | 37 ++++++++++++++++++++++++++++++++-----
 1 file changed, 32 insertions(+), 5 deletions(-)

(limited to 'utility')

diff --git a/utility/collection.hpp b/utility/collection.hpp
index 1422a84..a9ddb78 100644
--- a/utility/collection.hpp
+++ b/utility/collection.hpp
@@ -6,26 +6,53 @@
 
 template<typename Object> class Collection {
 public:
-	using Ptr = std::unique_ptr<Object>;
+	using Ptr = std::shared_ptr<Object>;
 	std::vector<Ptr> objects;
 
 	template<typename T = Object, typename... Params>
-	const auto &
+	auto
 	create(Params &&... params)
 	{
-		return objects.emplace_back(std::make_unique<T>(std::forward<Params>(params)...));
+		auto obj = std::make_shared<T>(std::forward<Params>(params)...);
+		objects.emplace_back(obj);
+		return obj;
 	}
 
 	template<typename T = Object, typename M = void, typename... Params>
-	void
+	auto
 	apply(const M & m, Params &&... params) const
 	{
-		std::for_each(objects.cbegin(), objects.cend(), [&m, &params...](auto && op) {
+		return std::count_if(objects.begin(), objects.end(), [&m, &params...](auto && op) {
 			if (auto o = dynamic_cast<T *>(op.get())) {
 				std::invoke(m, o, std::forward<Params>(params)...);
+				return true;
+			}
+			return false;
+		});
+	}
+
+	template<typename T = Object, typename M = void, typename... Params>
+	auto
+	applyOne(const M & m, Params &&... params) const
+	{
+		return std::find_if(objects.begin(), objects.end(), [&m, &params...](auto && op) {
+			if (auto o = dynamic_cast<T *>(op.get())) {
+				return std::invoke(m, o, std::forward<Params>(params)...);
 			}
+			return false;
 		});
 	}
+
+	template<typename T = Object>
+	void
+	removeAll()
+	{
+		objects.erase(std::remove_if(objects.begin(), objects.end(),
+							  [](auto && op) {
+								  return dynamic_cast<T *>(op.get());
+							  }),
+				objects.end());
+	}
 };
 
 #endif
-- 
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