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Entity's Keys

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You can now give the 'key' component to Entities.

A key will be generated automatically and stored in Entity.key.value.

You can then use this key to fetch the Entity from the World with World:getEntityByKey(key)

The keys are generated with a generator function that can be overriden.
This commit is contained in:
Pablo Ariel Mayobre 2023-02-14 18:14:25 -03:00
parent 3d195c790f
commit a55efd042a
6 changed files with 148 additions and 15 deletions
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18
concord/entity.lua
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@ -9,7 +9,8 @@ local Type = require(PATH..".type")
local Utils = require(PATH..".utils")
-- Initialize built-in Components (as soon as possible)
local Builtins = require(PATH..".builtins")
local Builtins = require(PATH..".builtins.init") --luacheck: ignore
-- Builtins is unused but the require already registers the Components
local Entity = {
SERIALIZE_BY_DEFAULT = true,
@ -49,7 +50,7 @@ local function give(e, name, componentClass, ...)
local hadComponent = not not e[name]
if hadComponent then
e[name]:removed()
e[name]:removed(true)
end
e[name] = component
@ -61,7 +62,7 @@ end
local function remove(e, name)
if e[name] then
e[name]:removed()
e[name]:removed(false)
e[name] = nil
@ -207,11 +208,16 @@ function Entity:getWorld()
return self.__world
end
function Entity:serialize()
function Entity:serialize(ignoreKey)
local data = {}
for name, component in pairs(self) do
if name ~= "__world" and name ~= "__isEntity" and component.__name == name then
-- The key component needs to be treated separately.
if name == "key" and component.__name == "key" then
if not ignoreKey then
data.key = component.value
end
elseif (name ~= "__world") and (name ~= "__isEntity") and (component.__name == name) then
local componentData = component:serialize()
if componentData ~= nil then
@ -234,7 +240,7 @@ function Entity:deserialize(data)
local componentClass = Components[componentData.__name]
local component = componentClass:__new()
local component = componentClass:__new(self)
component:deserialize(componentData)
self[componentData.__name] = component