ECS:components

Returns all components of a specific class or inheriting from it.

Usage

ecs:components(class)

Arguments

Name	Type	Description
`class`	`string` or component class	The component class to list instances of, as a `string` or as a reference.

Returns

Name	Type	Description
`components`	`table`	A table where each key is a component of the specified class or inherits from it.

Examples

local Stat = Class("Stat", crystal.Component);
local Health = Class("Health", Stat);
local Mana = Class("Mana", Stat);

local ecs = crystal.ECS:new();
local entity = ecs:spawn(crystal.Entity);
entity:add_component("Health");
entity:add_component("Mana");

for component in pairs(ecs:components("Stat")) do
  -- Prints "Instance of class: Health" and "Instance of class: Mana"
  print(component);
end