Entity Component Filter System for Love2d. First step: writing down what the hell it even means.
And entity component filter system is a way to organize the way data influences logic within a game. It is built around the idea of splitting up responsibilities between plain data objects, filters and systems.
Entities are the objects within the game. In the most basic idea they are an entry in the entity-table, with a table containing their properties. The properties of entities are called components.
Components are properties of entities.
Filters are pretty much a reverse inheritence system. 'It has four wheels, so it is a car' is a sort-of-correct example of how a filter works.
A system is a piece of logic. It contains logic functions that run each frame (update, draw), logic functions that run upon load (load), and logic functions that run when an entity registers to a certain filter:
local s = {}
s.functions = {}
s.functions.update = function() end
s.register = {}
s.unregister = {}
s.register.wall = function(entity) end
s.unregister.wall = function(entity) end