ECS/main.lua

--[[
    Just a small test
]]--
local class = require("class")
local Component = require("Component")
local World = require("ECSWorld")
local SystemFilter = require("SystemFilter")
local System = require("System")

local world = ECSWorld:new()

local LifeComponent = Component()
LifeComponent.__name = "LifeComponent"
function LifeComponent:init(life, life_max)
    self.life = life
    self.life_max = life_max
end

local ManaComponent = Component()
ManaComponent.__name = "ManaComponent"
function ManaComponent:init(mana, mana_max)
    self.mana = mana
    self.mana_max = mana_max
end

local CreatureSystem = System()
function CreatureSystem.update(dt, entities)
    for i,entity in ipairs(entities) do
        print(string.format(
[[HP : %d/%d
MP : %d/%d]],
        entity:getComponent(LifeComponent).life,
        entity:getComponent(LifeComponent).life_max,
        entity:getComponent(ManaComponent).mana,
        entity:getComponent(ManaComponent).mana_max))
    end
end

local e = world:createEntity()
world:registerSystem(CreatureSystem, LifeComponent, ManaComponent)
print(LifeComponent)

e:addComponent(LifeComponent, 10, 20)
e:addComponent(ManaComponent, 10, 20)
world:update(0)
e:removeComponent(ManaComponent)
world:update(0)