Setting a highscore?

Solar2D General Questions/Discussion
#1

I have my score working perfectly fine but I can’t seem to figure out how to set a highscore. This is what I’m trying to use

local function highscore()
if (_G.score > highscore) then
 highscorenumber.text = _Gscore
end
end

do you know what is wrong with that, and how should I go about trying to save it so you can close the game and the best will always be there? 

#2

Hi @ndmcclard,

For data to persist between app sessions, you’ll need to write it to a file in the app’s “sandbox”, then read it back in later. The following guide should help you get started on this task:

http://docs.coronalabs.com/guide/data/readWriteFiles/index.html

Take care,

Brent

#3

Ok thanks, but I have been at this for a couple days and it still isn’t making any since do you know if there is a way you could explain it so I could understand it a bit better? sorry for my ignorance.

#4

I currently use this library to save data:
https://github.com/GlitchGames/GGData

Basically save your values to a text file on the device and read them back to always keep them handy.  That might be more than what you are looking for, but something you could look into.

I will say that in your code above, you reference _G.score in one spot and then _Gscore (without the .) in another.  That would be problematic, I think.

#5

Yeah I saw that and I just had to move it to the event listener for it to update. So know I just have to save it, which hopefully that will work for me. Thanks for the help! Also should I put that code it a text file (txt) or a lua file, and should I have any code in the main file that would accommodate the saving and loading?  

#6

Also where does GGdata come from am I making a file with that name or do I have to download something? thanks for all your help!

#7

If you decide to save your data for use between game launches, you should read the documentation associated with GGdata.  It is quite thorough and easy to implement.

#8

Ok so I’ve been at this for a couple days and I still can’t seem to figure it out. what I’m using https://github.com/robmiracle/Simple-Table-Load-Save-Functions-for-Corona-SDK I have my table all set up and it updates if the score > highscore but it doesn’t save when the game end. I’m using
loadsave.saveTable(ht.number, “myTable.json”, system.DocumentsDirectory)

but it doesn’t seem to work I’ve also put his loadsave lua file in my games file and required it in the scene but it still doesn’t work, anyone know what I can do to save it? thanks for anyone’s help!

#9

Is ht.number a table?

You really will need to provide more of your code if you expect someone to be able to figure out what you might be doing wrong.

#10

Sorry for how vague I was here is some of my code

my table

local ht = {}
ht.number = 0

my event listener for when I add the score when I push on the object

local function addToScore()
 _G.score = _G.score + 1
  scorenumber.text = _G.score
 if (_G.score > ht.number) then
  ht.number = _G.score
   highscorenumber.text = ht.number
  loadsave.saveTable(ht.number, “myTable.json”, system.DocumentsDirectory)
 end
transition.moveTo(cookie, {x= math.random(30, 280), y= math.random(-20, 500), time=0})
end

I hope that’s enough let me know if you need to see anything else to help.

#11

Well, I haven’t used Rob’s code before, but from what I can tell at a quick look, it’s intended to save a table.  ht.number is not a table.  ht is the table.  Have you tried saving and loading that?

#12

Yea I did that as well, one of the things I realized I’m not doing is I have no load code do you know where I should put it at in the composer layout?

#13

Ok so I’ve gone back to what you told me to use since you know how to use it so I required it

local GGData = require (“GGData”)

I set the value of it

local highscore = GGData:new()
highscore.anotherValue = 0

I update it and save alongside the score

local function addToScore()
 _G.score = _G.score + 1
  scorenumber.text = _G.score
   transition.moveTo(cookie, {x= math.random(30, 280), y= math.random(-20, 500), time=0})
 if (_G.score > highscore.anotherValue) then
  highscore.anotherValue = _G.score
  highscorenumber.text = highscore.anotherValue
  highscore:save()
 end
end

but I get an error with this in the GGData file

path = system.pathForFile( self.path … “/” … self.id … “.box”, system.DocumentsDirectory )
 local file = io.open( path, “w” )

It says attempt to concatenate field ‘id’ (a nil value)

I also changed the box to highscore but it doesn’t work, since you know how it works do you know what I’m doing wrong?

#14

Anyone know what I’m doing wrong?

#15

Ok so I changed everything from highscore to box and it now looks like this for me setting it up.

local box = GGData:new(“sample”)
box:set(“message”, “hello world”)
box.anotherValue = 0

so now I don’t get the error but it still doesn’t save, anyone know what im doing wrong, will you tell me how you save your highscores using ggdata?

#16

Could anyone help me with this? It’s the only thing stopping me from finishing my game.

#17

Are you actually saving the data?

box:save()
#18

Hi @ndmcclard,

For data to persist between app sessions, you’ll need to write it to a file in the app’s “sandbox”, then read it back in later. The following guide should help you get started on this task:

http://docs.coronalabs.com/guide/data/readWriteFiles/index.html

Take care,

Brent

#19

Ok thanks, but I have been at this for a couple days and it still isn’t making any since do you know if there is a way you could explain it so I could understand it a bit better? sorry for my ignorance.

#20

I currently use this library to save data:
https://github.com/GlitchGames/GGData

Basically save your values to a text file on the device and read them back to always keep them handy.  That might be more than what you are looking for, but something you could look into.

I will say that in your code above, you reference _G.score in one spot and then _Gscore (without the .) in another.  That would be problematic, I think.