ECS:add_context

Makes a value available to all entities created by this ECS. This is useful to give entities access to global-ish values, like the scene they belong to.

There are two ways to retrieve these values at a later time:

1. Calling the entity:context method (eg. my_entity:context("my_context"))
2. Calling the ecs:context method (eg. my_ecs:context("my_context"))

Usage

ecs:add_context(name, value);

Arguments

Name	Type	Description
name	string	Name of the context object.
value	any	Value of the context object.

Examples

local ecs = crystal.ECS:new();

local map = crystal.assets.get("assets/map/dungeon.lua");
ecs:add_context("map", map);

assert(ecs:context("map") == map);

local ecs = crystal.ECS:new();

local map = crystal.assets.get("assets/map/dungeon.lua");
ecs:add_context("map", map);

local Hero = Class("Hero", crystal.Entity);
Hero.init = function(self)
  local map = self:context("map");
  -- do things with map
end