No. You open it. I took a long time typing it up neatly. I can't copy and paste it.
Here a really really raelly relaly basic logic scenario.
Object 1 displacement is (x1,y1)
Object 2 displacement is (x2,y2)
A hit occurs only when x1=x2, and y1=y2
Where x = Vxt
Take object 1 = stone, object 2 =...