*SOLVED*class problem.

[TheBreadCat]

Ok, here's the code that I'm running without errors:

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function class()
  local cls = {}
  cls.__index = cls
  return setmetatable(cls, {__call = function (c, ...)
    instance = setmetatable({}, cls)
    if cls.__init then
      cls.__init(instance, ...)
    end
    return instance
  end})
end

player = class()

function player:__init()
  self.x = 320
  self.y = 240
  self.hspeed = 0
  self.vspeed = 0
  self.hp = 0
end

function player:update()
  self.x = self.x + self.hspeed
  self.y = self.y + self.vspeed
  self.vspeed = 0
  self.hspeed = 0
end

p = player()

function love.update(dt)
  p:update()
end

I've created a test folder in the same folder where love.exe lives, and put the above code in a main.lua file inside test. I'm then able to run it fine by either dragging test over love.exe or via the command line: love test.

but when i call this function:

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function cCake:MoveDown()
	self.y = self.y+1
end

by doing this:

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oCake:MoveDown()

i get an error.

[bartbes]

Because oCake.y doesn't exist?

[TheBreadCat]

Because oCake.y doesn't exist?

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function cCake:init()
	self.x = 0
	self.y = 0
	self.hspeed = 0
	self.vspeed = 0
end

[TheBreadCat]

it does it must be something else.

[kikito]

Because oCake.y doesn't exist?

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function cCake:init()
	self.x = 0
	self.y = 0
	self.hspeed = 0
	self.vspeed = 0
end

Wasn't your constructor method called __init (with underscores)?

Also, for future posts: If you say "I get an error" it's very difficult to know what happens. It's better saying "I get the following error:" and paste the error message after it on a [ code ] [ /code ] section.

[TheBreadCat]

still does not work just gets this:

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attempt to perform arithmetic on field 'x'(a nil value)

done before.
just forgot to repost it.
and the __init is changed to init beouse im using http://love2d.org/wiki/Simple_Educative_Class_System.

[leiradel]

Can you post a .love file we can use to reproduce the problem?

[Robin]

Also, you're creating a global called "instance". This does not seem to have been fixed by anyone. Not the most important of your issues, but still.

init() is not called on your class system, but __init() is, which is why it doesn't work. Change either one in the other, and it should work.

[TheBreadCat]

Also, you're creating a global called "instance". This does not seem to have been fixed by anyone. Not the most important of your issues, but still.

init() is not called on your class system, but __init() is, which is why it doesn't work. Change either one in the other, and it should work.

are you even listening?
i changed libary os now its init()

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function class:new(...)
    local c = {}
    c.__baseclass = self
    setmetatable(c, getmetatable(self))
    if c.init then <--------
        c:init(...) <---------
    end
    return c
end

[leiradel]

are you even listening?

What about you, are you listening? I've asked if you could post a .love file that reproduces the problem and you didn't even answer.

You won't get much help with this kind of attitude.