Hi,
I have been trying to install Unity engine from the given source file - http://beta.unity3d.com/download/061bcf22327f/public_download.html
I was getting this error while on executing this command -
dpkg -i unity-editor_amd64-2017.1.0xf3Linux.deb
Selecting previously unselected package unity-editor.
(Reading database ... 168953 files and directories currently installed.)
Preparing to unpack unity-editor_amd64-2017.1.0xf3Linux.deb ...
Unpacking unity-editor (2017.1.0xf3Linux) ...
dpkg: dependency problems prevent configuration of unity-editor:
unity-editor depends on npm; however:
Package npm is not installed.
dpkg: error processing package unity-editor (--install):
dependency problems - leaving unconfigured
Processing triggers for gnome-menus (3.13.3-9) ...
Processing triggers for desktop-file-utils (0.23-1) ...
Processing triggers for mime-support (3.60) ...
Processing triggers for hicolor-icon-theme (0.15-1) ...
Errors were encountered while processing:
unity-editor
When I checked npm, I found its already installed in my system.
rsinha@rsinha:~/Downloads/npm2$ npm -version
3.10.10
Can someone please help me out how to resolve this issue. I am not sure if I am missing something.
Thanks in advance. 
I understand, but I have no problem with sending an object from one point to another. My problem is that I know how to make it stop after reaching A point but I do not know how to make it go to the next point after pressing the same button. And how to designate another point. I have over 20 points, so I do not know how to do it the easiest way.
– polan31