--- @class Effect
local effect = {}
effect.__index = effect

function effect:onBirth()

end

function effect:onDeath()

end

function effect:onStartTurn()

end

function effect:onEndTurn()

end

--- @param other Effect
--- @return Effect|nil
function effect:sum(other)

end

function effect:update(dt)

end

function effect:draw()

end

--- @return Effect
local function new()
    return setmetatable({}, effect)
end

return { new = new }