Core/Flags: Add Test method

ChangeLog.md

@@ -22,6 +22,7 @@ Nazara Engine:
 - Flags class now use an UInt8 or UInt16 to store the value if possible.
 - Flags class is now explicitly convertible to any integer type of the same size (or greater size) than the internal size.
 - Fix String movement constructor, which was leaving a null shared string (which was not reusable)
+- Add Flags<E>::Test method, in order to test one or multiple flags at once.
 
 Nazara Development Kit:
 - Added ImageWidget (#139)

include/Nazara/Core/Flags.hpp

@@ -48,6 +48,8 @@ namespace Nz
 			constexpr Flags(BitField value = 0);
 			constexpr Flags(E enumVal);
 
+			constexpr bool Test(const Flags& flags) const;
+
 			explicit constexpr operator bool() const;
 			template<typename T, typename = std::enable_if_t<std::is_integral<T>::value && sizeof(T) >= sizeof(BitField)>> explicit constexpr operator T() const;
 

include/Nazara/Core/Flags.inl

@@ -40,7 +40,17 @@ namespace Nz
 	}
 
 	/*!
-	* \brief Tests a Flags
+	* \brief Tests if all flags from a Flags object are enabled
+	* \return True if all tested flags are enabled.
+	*/
+	template<typename E>
+	constexpr bool Flags<E>::Test(const Flags& flags) const
+	{
+		return (m_value & flags.m_value) == flags.m_value;
+	}
+
+	/*!
+	* \brief Tests any flag
 	* \return True if any flag is enabled.
 	*
 	* This will convert to a boolean value allowing to check if any flag is set.