diff --git a/init.lua b/init.lua
index 2bb9f8d..c9c2897 100644
--- a/init.lua
+++ b/init.lua
@@ -2,8 +2,11 @@
 mtul.b3d = {}
 
 local modpath = minetest.get_modpath("mtul_b3d")
-dofile(modpath.."/read_b3d.lua")
-dofile(modpath.."/write_b3d.lua")
+--placed in a seperate directory for the license
+dofile(modpath.."/modlib/read_b3d.lua")
+dofile(modpath.."/modlib/write_b3d.lua") --this is untested, could be very broken.
 --these modules are disabled, refactoring is needed.
---dofile(modpath.."/read_b3d_bone.lua")
+if mtul.math.cpml_loaded then
+   dofile(modpath.."/read_b3d_bone")
+end
 --dofile(modpath.."/read_b3d_bone.lua"
\ No newline at end of file
diff --git a/License.txt b/modlib/License.txt
similarity index 100%
rename from License.txt
rename to modlib/License.txt
diff --git a/read_b3d.lua b/modlib/read_b3d.lua
similarity index 100%
rename from read_b3d.lua
rename to modlib/read_b3d.lua
diff --git a/to_gltf.lua b/modlib/to_gltf.lua
similarity index 100%
rename from to_gltf.lua
rename to modlib/to_gltf.lua
diff --git a/write_b3d.lua b/modlib/write_b3d.lua
similarity index 100%
rename from write_b3d.lua
rename to modlib/write_b3d.lua
diff --git a/read_b3d_bone.lua b/read_b3d_bone.lua
index 97f2e47..5e1a2b2 100644
--- a/read_b3d_bone.lua
+++ b/read_b3d_bone.lua
@@ -8,63 +8,7 @@ local binary_search_frame = modlib.table.binary_search_comparator(function(a, b)
 end)
 
 --> list of { bone_name = string, parent_bone_name = string, position = vector, rotation = quaternion, scale = vector }
-function get_animated_bone_properties(self, keyframe, interpolate)
-	local function get_frame_values(keys)
-		local values = keys[keyframe]
-		if values and values.frame == keyframe then
-			return {
-				position = values.position,
-				rotation = values.rotation,
-				scale = values.scale
-			}
-		end
-		local index = binary_search_frame(keys, keyframe)
-		if index > 0 then
-			return keys[index]
-		end
-		index = -index
-		assert(index > 1 and index <= #keys)
-		local a, b = keys[index - 1], keys[index]
-		if not interpolate then
-			return a
-		end
-		local ratio = (keyframe - a.frame) / (b.frame - a.frame)
-		return {
-			position = (a.position and b.position and modlib.vector.interpolate(a.position, b.position, ratio)) or a.position or b.position,
-			rotation = (a.rotation and b.rotation and modlib.quaternion.slerp(a.rotation, b.rotation, ratio)) or a.rotation or b.rotation,
-			scale = (a.scale and b.scale and modlib.vector.interpolate(a.scale, b.scale, ratio)) or a.scale or b.scale,
-		}
-	end
-	local bone_properties = {}
-	local function get_props(node, parent_bone_name)
-		local properties = {parent_bone_name = parent_bone_name}
+function mtul.b3d:get_bone_global_transform(self, node_name)
 
-		if keyframe > 0 and node.keys and next(node.keys) ~= nil then
-			modlib.table.add_all(properties, get_frame_values(node.keys))
-		end
-
-		if not properties.position then -- animation not present, fall back to node position
-			properties.position = modlib.table.copy(node.position)
-		end
-
-		if properties.rotation then -- animation is relative to node rotation
-			properties.rotation = modlib.quaternion.compose(node.rotation, properties.rotation)
-		else
-			properties.rotation = modlib.table.copy(node.rotation)
-		end
-
-		if not properties.scale then -- animation not present, fall back to node scale
-			properties.scale = modlib.table.copy(node.scale)
-		end
-
-		if node.bone then
-			properties.bone_name = node.name
-			table.insert(bone_properties, properties)
-		end
-		for _, child in pairs(node.children or {}) do
-			get_props(child, properties.bone_name)
-		end
-	end
-	get_props(self.node)
-	return bone_properties
-end
\ No newline at end of file
+end
+function mtul.b3d:get_bone
\ No newline at end of file