How to detect wether an Object came to sleep at a specific position?

How to detect wether an Object came to sleep at a specific position?

References

Reference NO 1

http://processing.org/tutorials/objects/

Reference NO 2

http://anh.cs.luc.edu/python/hands-on/3.1/handsonHtml/graphics.html

Reference NO 3

http://nagios.sourceforge.net/docs/3_0/configmain.html

Reference NO 4

http://hubpages.com/hub/bedroom_feng_shui

Reference NO 5

http://health.nytimes.com/health/guides/symptoms/back-pain-low

Reference NO 6

http://gosset.wharton.upenn.edu/mortality/new_scientist.html

Reference NO 7

http://en.wikipedia.org/wiki/Glossary_of_cue_sports_terms

Reference NO 8

http://ombuddha.tumblr.com/