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Prism is a powerful and flexible Entity Component System (ECS) library designed for efficient game development in Roblox.
It enables a data-driven approach to managing entities and their behaviors.

Introduction

This is a rework of Celesta, my old ECS library, created 7 months ago. After having some problems with Celesta development, I stopped it and now I decided to open-source the new version of it with a new name -- Prism.

Usage

local Packages = game.ReplicatedStorage.Packages
local Prism = require(Packages.Prism)

local health = Prism.Piece {
    max = 100,
    current = 100
}
local damaged = Prism.Piece(10)

return Prism.Query {
    query = function()
        return health, damaged
    end
}
:trait('Update Health', function(data, health, damaged)
    -- Deal damage
    health.data.current = math.max(0, health.data.current - damaged.data)

    -- Remove the damaged piece
    data.registry:remove(data.entity, damaged)
end)