1 files changed, 136 insertions, 0 deletions
diff --git a/source/GameObject.cpp b/source/GameObject.cpp
new file mode 100644
index 0000000..bbddb20
--- /dev/null
+++ b/source/GameObject.cpp
@@ -0,0 +1,136 @@
+#include "GameObject.hpp"
+
+#include "World.hpp"
+
+void GameObject::FreeRecursive(GameObject* obj) {
+	auto gomm = obj->GetMemoryManagement();
+	bool freeSelf = gomm != Tags::GOMM_SelfAndAllChildren;
+	bool freeChildren = gomm != Tags::GOMM_SelfAndAllChildren && gomm != Tags::GOMM_AllChildren;
+
+	if (freeChildren) {
+		for (auto child : obj->GetChildren()) {
+			FreeRecursive(obj);
+		}
+	}
+	if (freeSelf) {
+		delete obj;
+	}
+}
+
+GameObject::GameObject(GameWorld* world)
+	: mWorld{ world } {
+}
+
+GameObject::~GameObject() {
+	RemoveAllChildren();
+	if (mParent) {
+		mParent->RemoveChild(this);
+		// NOTE: from this point on, mParent will be nullptr
+	}
+}
+
+GameWorld* GameObject::GetWorld() const {
+	return mWorld;
+}
+
+GameObject* GameObject::GetParent() const {
+	return mParent;
+}
+
+const PodVector<GameObject*>& GameObject::GetChildren() const {
+	return mChildren;
+}
+
+namespace ProjectBrussel_UNITY_ID {
+bool ValidateGameObjectChild(GameObject* parent, GameObject* child) {
+	return parent->GetWorld() == child->GetWorld();
+}
+} // namespace ProjectBrussel_UNITY_ID
+
+void GameObject::AddChild(GameObject* child) {
+	if (child->mParent) {
+		return;
+	}
+	if (!ProjectBrussel_UNITY_ID::ValidateGameObjectChild(this, child)) {
+		return;
+	}
+
+	mChildren.push_back(child);
+	child->SetParent(this);
+}
+
+GameObject* GameObject::RemoveChild(int index) {
+	if (index < 0 || index >= mChildren.size()) {
+		return nullptr;
+	}
+
+	auto it = mChildren.begin() + index;
+	auto child = *it;
+
+	// cancelUpdate(ret);
+
+	std::swap(*it, mChildren.back());
+	mChildren.pop_back();
+	child->SetParent(nullptr);
+	return child;
+}
+
+GameObject* GameObject::RemoveChild(GameObject* child) {
+	if (child) {
+		for (auto it = mChildren.begin(); it != mChildren.end(); ++it) {
+			if (*it == child) {
+				// cancelUpdate(child);
+
+				std::swap(*it, mChildren.back());
+				mChildren.pop_back();
+				child->SetParent(nullptr);
+				return child;
+			}
+		}
+	}
+	return nullptr;
+}
+
+PodVector<GameObject*> GameObject::RemoveAllChildren() {
+	for (auto& child : mChildren) {
+		child->SetParent(nullptr);
+	}
+
+	auto result = std::move(mChildren);
+	// Moving from STL object leaves it in a valid but _unspecified_ state, call std::vector::clear() to guarantee it's empty
+	// NOTE: even though we have the source code of PodVector<T>, we still do this to follow convention
+	mChildren.clear();
+	return result;
+}
+
+Tags::GameObjectMemoryManagement GameObject::GetMemoryManagement() const {
+	return Tags::GOMM_None;
+};
+
+Tags::GameObjectType GameObject::GetTypeTag() const {
+	return Tags::GOT_Generic;
+}
+
+const Material* GameObject::GetMeshMaterial() const {
+	return nullptr;
+}
+
+const Mesh* GameObject::GetMesh() const {
+	return nullptr;
+}
+
+void GameObject::Awaken() {
+}
+
+void GameObject::Resleep() {
+}
+
+void GameObject::Update() {
+}
+
+void GameObject::SetParent(GameObject* parent) {
+	if (mParent != parent) {
+		mParent = parent;
+		// needUpdate();
+	}
+}