Ensure that absent bone names work (#284)

include/ISceneNode.h

@@ -14,6 +14,7 @@
 #include "aabbox3d.h"
 #include "matrix4.h"
 #include "IAttributes.h"
+
 #include <list>
 #include <optional>
 
@@ -117,23 +118,14 @@ namespace scene
 
 		//! Returns the name of the node.
 		/** \return Name as character string. */
-		virtual const c8* getName() const
+		virtual const std::optional<std::string> &getName() const
 		{
-			return Name.c_str();
+			return Name;
 		}
 
-
 		//! Sets the name of the node.
 		/** \param name New name of the scene node. */
-		virtual void setName(const c8* name)
-		{
-			Name = name;
-		}
-
-
-		//! Sets the name of the node.
-		/** \param name New name of the scene node. */
-		virtual void setName(const core::stringc& name)
+		virtual void setName(const std::optional<std::string> &name)
 		{
 			Name = name;
 		}
@@ -601,7 +593,7 @@ namespace scene
 		}
 
 		//! Name of the scene node.
-		core::stringc Name;
+		std::optional<std::string> Name;
 
 		//! Absolute transformation of the node.
 		core::matrix4 AbsoluteTransformation;

include/ISkinnedMesh.h

@@ -10,6 +10,8 @@
 #include "IAnimatedMesh.h"
 #include "SSkinMeshBuffer.h"
 
+#include <optional>
+
 namespace irr
 {
 namespace scene
@@ -41,12 +43,12 @@ namespace scene
 		/** \param number: Zero based index of joint. The last joint
 		has the number getJointCount()-1;
 		\return Name of joint and null if an error happened. */
-		virtual const c8* getJointName(u32 number) const = 0;
+		virtual const std::optional<std::string> &getJointName(u32 number) const = 0;
 
 		//! Gets a joint number from its name
 		/** \param name: Name of the joint.
-		\return Number of the joint or -1 if not found. */
-		virtual s32 getJointNumber(const c8* name) const = 0;
+		\return Number of the joint or std::nullopt if not found. */
+		virtual std::optional<u32> getJointNumber(const std::string &name) const = 0;
 
 		//! Use animation from another mesh
 		/** The animation is linked (not copied) based on joint names
@@ -136,7 +138,7 @@ namespace scene
 			}
 
 			//! The name of this joint
-			core::stringc Name;
+			std::optional<std::string> Name;
 
 			//! Local matrix of this joint
 			core::matrix4 LocalMatrix;

include/IrrCompileConfig.h

@@ -5,8 +5,8 @@
 #pragma once
 
 //! Identifies the IrrlichtMt fork customized for the Minetest engine
-#define IRRLICHT_VERSION_MT_REVISION 14
-#define IRRLICHT_VERSION_MT "mt14"
+#define IRRLICHT_VERSION_MT_REVISION 15
+#define IRRLICHT_VERSION_MT "mt15"
 
 //! Irrlicht SDK Version
 #define IRRLICHT_VERSION_MAJOR 1