OOP GUI Error: main.lua:4: attempt to index local (a boolean value)... Issue with modules

Question

今天，我正忙着为我想在 LOVE2D 中开始制作的游戏制作一个图形用户界面 class。我决定尝试使用 OOP 来使将来创建新菜单更容易。在我尝试将它放入它自己的模块之前，OOP 工作得很好，它给我上面的错误。我已经根据类似代码对我的代码进行了双重和三次检查，但我找不到问题所在。我也查了一下，有类似的线程，但没有任何帮助我的问题。这是相关代码...

来自main.lua

local gui = {
x = 0, y = 0, 
width = 0, height = 0, 

popupSpeed = 300,

active = false,

color = {red = 0, blue = 0, green = 0, alpha = 0},

menuType = "",

--buttons = require "Game/buttons"
}

并且从 gui.lua...

local newGUI = require "Game/gui"

local menus = { 
    playerInv = newGUI.new()
}
function love.load()
    menus.playerInv:createDropDown("right" , _, 30, 100, love.graphics.getHeight() - 60, 50, 128, 50, 255)
end

function gui.new() 
    newMenu = {}
    for k, v in pairs(gui) do
        newMenu[k] = v
    end
    return newMenu
end

function gui:createDropDown(direction, x, y, width, height, red, blue, green, alpha)
    self.red = red
    self.blue = blue
    self.green = green
    self.alpha = alpha
    if direction == "right" then 
        self.x = love.graphics.getWidth() - width
        self.y = y
        self.width = width
        self.height = height
        self.menuType = "rightDropDown"
    elseif direction == "left" then
        self.x = 0
        self.y = y
        self.widthMax = width
        self.height = height
        self.menuType = "leftDropDown"
    elseif direction == "down" then
        self.x = x
        self.y = y
        self.width = width
        self.heightMax = height
        self.menuType = "regDropDown"
    end
end

function gui:drawGui()
    if self.active == true then
        love.graphics.setColor(self.red, self.blue, self.green, self.alpha)
        love.graphics.rectangle("fill", self.x, self.y, self.width, self.height, 10, 10, 6) 
    end
end

Answer 1

我假设第一个片段是 Game/gui，第二部分是 main.lua，如果是这样，您正试图调用 .new() 函数，但显然不存在在您的 Game/gui 文件中。您还需要将 gui 的所有功能移动到它自己的文件中，这包括 gui.new()、gui:createDropDown 和 gui:drawGui() 最后但并非最不重要的是，您必须 return gui 在它自己的文件结束。

你的主文件应该是这样的：

local newGUI = require "Game/gui"

local menus = { 
    playerInv = newGUI.new()
}
function love.load()
    menus.playerInv:createDropDown("right" , _, 30, 100, love.graphics.getHeight() - 60, 50, 128, 50, 255)
end

和Game/gui有点像这样：

local gui = {} -- With all the stuff inside

function gui.new() 
-- With all the stuff it had inside
end

function gui:createDropDown()
-- With all the stuff it had inside
end

function gui:drawGui()
-- With all the stuff it had inside
end

return gui

你看，你忘了把它的功能移到它自己的文件中，return gui 本身。不要忘记替换我在 Game/gui!

上遗漏的内容

OOP GUI Error: main.lua:4: attempt to index local (a boolean value)... Issue with modules

OOP GUI Error: main.lua:4: attempt to index local (a boolean value)... Issue with modules

oop

lua

module

love2d