¶ Prey Movement Trigger
Runs when prey moves around and targets only that prey.
How the trigger works is that it is on a 0.5 second (10 tick) timer. Each loop it compares the current location and the previous location of prey. If the distance between these two locations is more than or equal to 1 block, then it will trigger the trigger and target that prey.
¶ Targeting Scope
By default, the radius is set to INFINITE and will affect the prey regardless of location. You can however set a 
Position and 
Radius and it will then only affect the prey within that radius.
You can make the trigger only affect prey in specific situations using Conditions.