koobas.hobune.stream
How to know whether the object is surrounded by other objects
Currently I have an object that will move by itself, if it is surrounded by other objections, it will be destroyed. Not to sure how can I achieve it. Now I am able to build those grey block around the red dot but I'm not sure how can I make the red dot know it is surrounded by grey blocks so it is not able to move anywhere. Here is a demonstration: 
if the objects have colliders you can use Physics.Raycast.
