PythonMethod

Code Sharing
1

I’m a novice Lua programmer, and I just didn’t really like the table.insert(…) so I made this code. I don’t know if it was already possible to do something like this. However, I thought I’d share it and would love feedback from more experienced Lua programmers.

function setup()
    MenuList = PythonMethod({})
    ButtonList = PythonMethod({})
    
    MenuList:insert( Menu("MainMenu", color(255,255,255)) ) --Create a MainMenu  
    MenuList:insert( Menu("Screen2", color(0, 0, 0)) ) --Create a second screen
        ButtonList:insert( Button("Go to Screen 2", WIDTH/2, HEIGHT/2, function() func=MenuList["tab"][2] end))
     
    func=MenuList["tab"][1]
end

function draw()   
    func:draw()
    for ButtonPos,Button in pairs(ButtonList["tab"]) do Button:draw() end
end

function touched(t)
    for ButtonPos, Button in pairs(ButtonList["tab"]) do Button:touched(t) end
end

Menu = class()

function Menu:init(name,bg)
    self.bg = bg
    self.name = name
end

function Menu:draw()
    background(self.bg)
end

Button = class()

function Button:init(name,x,y,op)
    self.x = x
    self.y = y
    self.w, self.h = textSize(name)
    self.name = name
    self.sel=false
    self.onpressed = op
end

function Button:draw()
    rectMode(CENTER)
    if self.sel then fill(11, 255, 0, 255) else fill(127, 127, 127) end
    rect(self.x, self.y, self.w+40, self.h+10)
    fill(255, 255, 255, 255)
    text(self.name, self.x, self.y)
end

function Button:touched(t)
    if t.x > self.x-20 and t.x < self.x+20 and t.y > self.y - 20 and t.y < self.y + 20 then
        if t.state == MOVING then        
            self.sel = true
        elseif t.state == ENDED then
            self.onpressed()
            self.sel = false
        end
    else
        self.sel = false
    end
end

I have Python Method as a dependency

PythonMethod = class()

function PythonMethod:init(t)  -- initialize the table
    self.tab=t
end

function PythonMethod:concat(...) -- Perform concat
    table.concat(self.tab, ...)
end

function PythonMethod:move(...)
    print(type(t))
end

function PythonMethod:insert(...)  -- add another entry to the table
    table.insert(self.tab, ...)
end

function PythonMethod:remove(pos) --Removes element or table if nil
    if pos ~= nil then
        table.remove(self.tab, pos)
    else 
        self.tab = nil
    end
end

function PythonMethod:sort(...) -- Sort the table
    table.sort(self.tab, ...)
end

function PythonMethod:print(pos)  -- print each table entry if not defined
    if pos == nil then
        for a,b in pairs(self.tab) do
            print(a,b)
        end
    else
        print(self.tab[pos])
    end
end
2

@FearMe2142 I guess I don’t understand what you’re trying to say here. You said you didn’t like table.insert, so you made this code, but you use table.insert in PythonMethod:insert. I haven’t had any experience with Python, so maybe not knowing Python is my problem. I see you’re creating multiple screens by inserting them in a table. Maybe that’s what you’re trying to point out, but I don’t know. There have been several discussions on menus and multiple screens and they show different ways of doing it.

3

@dave1707 I think he’s just copying python functions. For example, instead of adding to a table like table.insert(t,1) you can do t:insert(1).
@FearMe2142 btw I’m confused about your PythonMethod class, are you saying you want help making it better, or have you finished it?

4

@MattthewLXXIII @dave1707

Yes this is unfinished. I wanted to make programming a bit simpler like Matthew said;

Rather than typing

MenuList = {}
table.insert(MenuList, Menu(...))

I can create an instance to save some typing in future.

MenuList = PythonMethod({})
MenuList:insert(Menu(...))

I think this would be especially useful for strings.