From bc565e0989f305f965d3129f29a8b814110fe12c 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: 743d7014974b3d1aa9ea58e52ed89f9aca511768 [formerly 7038ae6b04a57ddd716c43c43ddb1d9b7d43734e] [formerly 3836f98661a50646c3044a7551cb733bf121c249 [formerly a47cdf1a9da62c3ca2ff2da60d015f98bed6f7cd]]
Former-commit-id: 84faa425e9d8b4e6e022c598e076f59cd74b5322 [formerly 5dc0e4aaa6e24ceb84f60cf68ff45dc69cf3f437]
Former-commit-id: 888def1e5d87e4ac42616f23ad16497b52df99e5
---
 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;