It does a lot more than just one sight check. Not only that, if you turn around, it has exactly the same purpose because it checks the line of sight from the TRUE player at that moment so won't let you place blocks that aren't in your line of sight. Fixing the whole purpose stated on the plugin's page.
Version: 1.3.1
This was hack you can use with freecam was introduced when 1.8 first came out and the FixFreecam plugin developer released his plugin once and never updated it and the way he also made his plugin was by using block ray tracing which made the plugin completely full of bugs and issues and this plugin actually is the best one i have seen so far and will fix it for all the freecams from all hacked clients so i suggest you use this since most anti cheats don't block this that well or at all. NOTE: Anyone that downloads this can thank me since i repeatedly asked benzimmer to make this.
This was hack you can use with freecam was introduced when 1.8 first came out and the FixFreecam plugin developer released his plugin once and never updated it and the way he also made his plugin was by using block ray tracing which made the plugin completely full of bugs and issues and this plugin actually is the best one i have seen so far and will fix it for all the freecams from all hacked clients so i suggest you use this since most anti cheats don't block this that well or at all.