From 17512b2b8e408214f63d2856a32ffb1203195c56 Mon Sep 17 00:00:00 2001
From: Lynix <lynix680@gmail.com>
Date: Sun, 14 Aug 2016 18:01:23 +0200
Subject: [PATCH] SDK/Entity: Add constant component getter

Former-commit-id: 602e3d136124f7a49270d95f191eeda0f78179d4 [formerly 1666ac8477467e91e8763109cb91e6cb2074d223] [formerly 3c27a318695a98bb97bbcceb2879f8b9b6da90bf [formerly 3f2b769579af5c103102a9a3d1f0c6a6c7bbbf32]]
Former-commit-id: 791755b458c83193eb1849ed3eabf9b41da564bf [formerly 8fc83ec409b57a67999bb0f7a4e25a87d96024a2]
Former-commit-id: 58a87205503d734ce877800da06daa1fee838bfa
---
 SDK/include/NDK/Entity.hpp |  2 ++
 SDK/include/NDK/Entity.inl | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/SDK/include/NDK/Entity.hpp b/SDK/include/NDK/Entity.hpp
index 33661eb50..5aeeb8226 100644
--- a/SDK/include/NDK/Entity.hpp
+++ b/SDK/include/NDK/Entity.hpp
@@ -40,6 +40,8 @@ namespace Ndk
 
 			inline BaseComponent& GetComponent(ComponentIndex index);
 			template<typename ComponentType> ComponentType& GetComponent();
+			inline const BaseComponent& GetComponent(ComponentIndex index) const;
+			template<typename ComponentType> const ComponentType& GetComponent() const;
 			inline const Nz::Bitset<>& GetComponentBits() const;
 			inline EntityId GetId() const;
 			inline const Nz::Bitset<>& GetSystemBits() const;
diff --git a/SDK/include/NDK/Entity.inl b/SDK/include/NDK/Entity.inl
index c7937b786..a03130b0d 100644
--- a/SDK/include/NDK/Entity.inl
+++ b/SDK/include/NDK/Entity.inl
@@ -2,6 +2,7 @@
 // This file is part of the "Nazara Development Kit"
 // For conditions of distribution and use, see copyright notice in Prerequesites.hpp
 
+#include <NDK/Entity.hpp>
 #include <Nazara/Core/Error.hpp>
 #include <Nazara/Core/StringStream.hpp>
 #include <algorithm>
@@ -50,6 +51,27 @@ namespace Ndk
 		return static_cast<ComponentType&>(GetComponent(index));
 	}
 
+	inline const BaseComponent& Entity::GetComponent(ComponentIndex index) const
+	{
+		///DOC: Le component doit être présent
+		NazaraAssert(HasComponent(index), "This component is not part of the entity");
+
+		BaseComponent* component = m_components[index].get();
+		NazaraAssert(component, "Invalid component pointer");
+
+		return *component;
+	}
+
+	template<typename ComponentType>
+	const ComponentType& Entity::GetComponent() const
+	{
+		///DOC: Le component doit être présent
+		static_assert(std::is_base_of<BaseComponent, ComponentType>::value, "ComponentType is not a component");
+
+		ComponentIndex index = GetComponentIndex<ComponentType>();
+		return static_cast<ComponentType&>(GetComponent(index));
+	}
+
 	inline const Nz::Bitset<>& Entity::GetComponentBits() const
 	{
 		return m_componentBits;