diff --git a/src/binding/src/script_core.cpp b/src/binding/src/script_core.cpp
index ae9db28..898dc06 100644
--- a/src/binding/src/script_core.cpp
+++ b/src/binding/src/script_core.cpp
@@ -56,6 +56,7 @@ void register_core_function(sol::state&,sol::table& ns)
                                , "column",&matrix4x4::column
                                , "set_identity",&matrix4x4::set_identity
                                , "inverse",&matrix4x4::inverse
+                               , "identity", &matrix4x4::identity
                                );
 
     ns.new_usertype<vector3>("vector3"
@@ -72,6 +73,9 @@ void register_core_function(sol::state&,sol::table& ns)
                             ,"right",&vector3::right
                             ,"up",&vector3::up
                             ,"down",&vector3::down
+                            ,sol::meta_function::addition,&vector3::operator+
+                            ,sol::meta_function::subtraction,&vector3::operator-
+                            ,sol::meta_function::multiplication,&vector3::operator*
                             );
 
     ns.new_usertype<vector4>("vector4"
diff --git a/src/scripts/demos/simple_002.lua b/src/scripts/demos/simple_002.lua
index 446cb61..22a1652 100644
--- a/src/scripts/demos/simple_002.lua
+++ b/src/scripts/demos/simple_002.lua
@@ -70,6 +70,7 @@ s:set_source(pw.shader_type.fragment,[[
 #version 400
 uniform vec4 color = vec4(1.0, 0.0, 0.0, 1.0);
 out vec4 frag_colour;
+
 void main() {
     frag_colour = color;
 }
@@ -91,6 +92,8 @@ end
 -- camera position
 local cam_pos = pw.vector3:new(0,0,0)
 
+local model_pos = pw.vector3:new(0,0,0)
+
 
 local ctx = pw.context:new()
 
@@ -106,8 +109,8 @@ w.on_update = function(self)
     -- set identity on model matrix
     mm:set_identity()
 
-    -- set view matrix with look_at
-    mv = pw.matrixtransform.look_at(cam_pos,pw.vector3.forward(),pw.vector3.up())
+    -- set view matrix with look_at - view matrix is moving the world - hence inverse!
+    mv = pw.matrixtransform.look_at(cam_pos,cam_pos + pw.vector3.forward(),pw.vector3.up()):inverse()
 
     -- compute aspect ratio from canvas size
     aspect_ratio = self.client_size.width / self.client_size.height
@@ -166,6 +169,10 @@ while w:update() do
             cam_pos.x = cam_pos.x - move_step
         elseif pw.input.get().input_string == 'd' then
             cam_pos.x = cam_pos.x + move_step
+        elseif pw.input.get().input_string == 'z' then
+            cam_pos.y = cam_pos.y + move_step
+        elseif pw.input.get().input_string == 'x' then
+            cam_pos.y = cam_pos.y - move_step
         end
 
         print(cam_pos.x,cam_pos.y,cam_pos.z)