Merge branch 'master' of github.com:lonkaars/crepe into jaro/poc-physics

1 files changed, 76 insertions, 68 deletions

diff --git a/mwe/ecs-homemade/inc/ComponentManager.hpp b/mwe/ecs-homemade/inc/ComponentManager.hpp
index d6da8e8..92db1d4 100644
--- a/mwe/ecs-homemade/inc/ComponentManager.hpp
+++ b/mwe/ecs-homemade/inc/ComponentManager.hpp
@@ -1,121 +1,128 @@
 
 template <typename T, typename... Args>
-void ComponentManager::AddComponent(std::uint32_t id, Args &&... args) {
-	std::type_index type = typeid(
-		T); //Determine the type of T (this is used as the key of the unordered_map<>)
-
-	if (mComponents.find(type)
-		== mComponents
-			   .end()) { //Check if this component type is already in the unordered_map<>
-		mComponents[type] = std::vector<std::vector<std::unique_ptr<
-			Component>>>(); //If not, create a new (empty) vector<> of vector<unique_ptr<Component>>
+T & ComponentManager::AddComponent(std::uint32_t id, Args &&... args) {
+	//Determine the type of T (this is used as the key of the unordered_map<>)
+	std::type_index type = typeid(T);
+
+	//Check if this component type is already in the unordered_map<>
+	if (mComponents.find(type) == mComponents.end()) {
+		//If not, create a new (empty) vector<> of vector<unique_ptr<Component>>
+		mComponents[type]
+			= std::vector<std::vector<std::unique_ptr<Component>>>();
 	}
 
-	if (id
-		>= mComponents[type]
-			   .size()) { //Resize the vector<> if the id is greater than the current size
-		mComponents[type].resize(
-			id
-			+ 1); //Initialize new slots to nullptr (resize does automatically init to nullptr)
+	//Resize the vector<> if the id is greater than the current size
+	if (id >= mComponents[type].size()) {
+		//Initialize new slots to nullptr (resize does automatically init to nullptr)
+		mComponents[type].resize(id + 1);
 	}
 
-	mComponents[type][id].push_back(std::make_unique<T>(std::forward<Args>(
-		args)...)); //Create a new component of type T using perfect forwarding and store its unique_ptr in the vector<>
+	//Create a new component of type T using perfect forwarding and store its unique_ptr in the vector<>
+	mComponents[type][id].push_back(
+		std::make_unique<T>(std::forward<Args>(args)...));
+
+	return static_cast<T &>(*mComponents[type][id].back().get());
 }
 
 template <typename T>
 void ComponentManager::DeleteComponentsById(std::uint32_t id) {
-	std::type_index type = typeid(
-		T); //Determine the type of T (this is used as the key of the unordered_map<>)
+	//Determine the type of T (this is used as the key of the unordered_map<>)
+	std::type_index type = typeid(T);
 
-	if (mComponents.find(type)
-		!= mComponents.end()) { //Find the type (in the unordered_map<>)
+	//Find the type (in the unordered_map<>)
+	if (mComponents.find(type) != mComponents.end()) {
+		//Get the correct vector<>
 		std::vector<std::vector<std::unique_ptr<Component>>> & componentArray
-			= mComponents[type]; //Get the correct vector<>
+			= mComponents[type];
 
-		if (id
-			< componentArray
-				  .size()) { //Make sure that the id (that we are looking for) is within the boundaries of the vector<>
-			componentArray[id]
-				.clear(); //Clear the whole vector<> of this specific type and id
+		//Make sure that the id (that we are looking for) is within the boundaries of the vector<>
+		if (id < componentArray.size()) {
+			//Clear the whole vector<> of this specific type and id
+			componentArray[id].clear();
 		}
 	}
 }
 
 template <typename T>
 void ComponentManager::DeleteComponents() {
-	std::type_index type = typeid(
-		T); //Determine the type of T (this is used as the key of the unordered_map<>)
+	//Determine the type of T (this is used as the key of the unordered_map<>)
+	std::type_index type = typeid(T);
 
-	if (mComponents.find(type)
-		!= mComponents.end()) { //Find the type (in the unordered_map<>)
-		mComponents[type]
-			.clear(); //Clear the whole vector<> of this specific type
+	//Find the type (in the unordered_map<>)
+	if (mComponents.find(type) != mComponents.end()) {
+		//Clear the whole vector<> of this specific type
+		mComponents[type].clear();
 	}
 }
 
 template <typename T>
 std::vector<std::reference_wrapper<T>>
 ComponentManager::GetComponentsByID(std::uint32_t id) const {
-	std::type_index type = typeid(
-		T); //Determine the type of T (this is used as the key of the unordered_map<>)
+	//Determine the type of T (this is used as the key of the unordered_map<>)
+	std::type_index type = typeid(T);
 
-	std::vector<std::reference_wrapper<T>>
-		componentVector; //Create an empty vector<>
+	//Create an empty vector<>
+	std::vector<std::reference_wrapper<T>> componentVector;
 
-	if (mComponents.find(type)
-		!= mComponents.end()) { //Find the type (in the unordered_map<>)
+	//Find the type (in the unordered_map<>)
+	if (mComponents.find(type) != mComponents.end()) {
 
+		//Get the correct vector<>
 		const std::vector<std::vector<std::unique_ptr<Component>>> &
 			componentArray
-			= mComponents.at(type); //Get the correct vector<>
+			= mComponents.at(type);
 
-		if (id
-			< componentArray
-				  .size()) { //Make sure that the id (that we are looking for) is within the boundaries of the vector<>
+		//Make sure that the id (that we are looking for) is within the boundaries of the vector<>
+		if (id < componentArray.size()) {
+			//Loop trough the whole vector<>
 			for (const std::unique_ptr<Component> & componentPtr :
-				 componentArray[id]) { //Loop trough the whole vector<>
-				T * castedComponent = static_cast<T *>(
-					componentPtr.get()); //Cast the unique_ptr to a raw pointer
-
-				if (castedComponent) { //Ensure that the cast was successful
-					componentVector.push_back(
-						*castedComponent); //Add the dereferenced raw pointer to the vector<>
+				 componentArray[id]) {
+				//Cast the unique_ptr to a raw pointer
+				T * castedComponent = static_cast<T *>(componentPtr.get());
+
+				//Ensure that the cast was successful
+				if (castedComponent) {
+					//Add the dereferenced raw pointer to the vector<>
+					componentVector.push_back(*castedComponent);
 				}
 			}
 		}
 	}
 
-	return componentVector; //Return the vector<>
+	//Return the vector<>
+	return componentVector;
 }
 
 template <typename T>
 std::vector<std::reference_wrapper<T>>
 ComponentManager::GetComponentsByType() const {
-	std::type_index type = typeid(
-		T); //Determine the type of T (this is used as the key of the unordered_map<>)
+	//Determine the type of T (this is used as the key of the unordered_map<>)
+	std::type_index type = typeid(T);
 
-	std::vector<std::reference_wrapper<T>>
-		componentVector; //Create an empty vector<>
+	//Create an empty vector<>
+	std::vector<std::reference_wrapper<T>> componentVector;
 	//std::uint32_t id = 0;	//Set the id to 0 (the id will also be stored in the returned vector<>)
 
-	if (mComponents.find(type)
-		!= mComponents.end()) { //Find the type (in the unordered_map<>)
+	//Find the type (in the unordered_map<>)
+	if (mComponents.find(type) != mComponents.end()) {
 
+		//Get the correct vector<>
 		const std::vector<std::vector<std::unique_ptr<Component>>> &
 			componentArray
-			= mComponents.at(type); //Get the correct vector<>
+			= mComponents.at(type);
 
+		//Loop through the whole vector<>
 		for (const std::vector<std::unique_ptr<Component>> & component :
-			 componentArray) { //Loop through the whole vector<>
-			for (const std::unique_ptr<Component> & componentPtr :
-				 component) { //Loop trough the whole vector<>
-				T * castedComponent = static_cast<T *>(
-					componentPtr.get()); //Cast the unique_ptr to a raw pointer
-
-				if (castedComponent) { //Ensure that the cast was successful
-					componentVector.emplace_back(std::ref(
-						*castedComponent)); //Pair the dereferenced raw pointer and the id and add it to the vector<>
+			 componentArray) {
+			//Loop trough the whole vector<>
+			for (const std::unique_ptr<Component> & componentPtr : component) {
+				//Cast the unique_ptr to a raw pointer
+				T * castedComponent = static_cast<T *>(componentPtr.get());
+
+				//Ensure that the cast was successful
+				if (castedComponent) {
+					//Pair the dereferenced raw pointer and the id and add it to the vector<>
+					componentVector.emplace_back(std::ref(*castedComponent));
 				}
 			}
 
@@ -123,5 +130,6 @@ ComponentManager::GetComponentsByType() const {
 		}
 	}
 
-	return componentVector; //Return the vector<>
+	//Return the vector<>
+	return componentVector;
 }