Corona Cloud Guides > Get Leaderboard Scores with errors

General (non-technical) Testing Forum for Moderators / Admins
#1

In this page:http://docs.coronalabs.com/guide/cloud/leaderachieve/index.html#leaderboard-methods

there is this code:

local function leaderboardsListener( event )

if ( event.type == “getScores” and event.error == nil ) then

local scoreStrings = {}
local results = event.results
local maxScores = #results

if ( maxScores > 10 ) then maxScores = 10 end --get maximum of 10 high scores

for i = 1, maxScores do
local text = string.format( “%-2d - %-15s - %6d”, i, string.sub(results[i].username, 1, 15), results[i].value )
scoreStrings[i] = display.newText( text, 0, 0, nil, 16 )
scoreStrings[i].x = display.contentCenterX - 32
scoreStrings[i].y = 100 + i * 24
end
end
end
end

where I found some problems:

First of all one “end” should be removed because there are 5 ends (one is in the same line of the if (maxScore > 10)

This is not so difficult to find as error, but I’m just wondering if this code was ever tested. Before to copy and paste a code I would test it.

Second problem:

local results = event.results

is wrong, should be 

local results = event.response

based on other info found in another piece of code…

 event.results is giving me an error

Third problem is that the test 

if ( event.type == “getScores” and event.error == nil )

where even.error == nil  is not working for me.

Adding the line:

print(“in leaderboardsListener event.name:”,event.name," event.type:",event.type," event.error:",event.error," event.response:",event.response )

I have this output:

in leaderboardsListener event.name:    leaderboards     event.type:    getScores     event.error:    nil     event.response:    {“error”:“User authentication token is not present in the request parameters.”}

So the event.error is nill but still I have an error that is indicated in the even.response

Now obviously I’m doing something wrong… but I do not understand what.

Also, when I try to see the scores in the leaderboard in the cloud dashboard I do see only a white page (i’m clicking on the link Score in this leaderboard).

I think (but I’m not sure) I’ve submitted a score, but I’m not able to see this neither via code, nor via the dashboard…

Thank you,

Ema

#2

I have been trying to do this today too, and came across the same problems. You have to register a user and login before you call leaderboard.getScores() thats why you are getting  {“error”:“User authentication token is not present in the request parameters.”}

I am using the same leaderboardListener you have, which is showing a list of scores from 3 different user accounts I have created in the simulator, but I am still getting the blank white page when I try to see my leaderboard in the Corona Cloud Dashboard

Also I read in another post that that the event.response is returned as a json so where you have

local results = event.response

I changed it to

local results = json.decode( event.response )

#3

Thank you Gooner87,

I just realized that I need to call this after the user is logged.

I was also able to submit a score to a leaderboard (I saw the response correctly).

But now when I try to call leaderboards.getScores( myLeaderBoard )  (I’m doing this just after the login):

with this:

function leaderboardsListener( event )

    print(“in leaderboardsListener event.name:”,event.name," event.type:",event.type," event.error:",event.error," event.response:",event.response )

    if ( event.type == “getScores” and event.error == nil ) then

        local results = event.response – not event.results

        print("#results: ",#results)

            for i = 1, #results do

                print(“i=”,i)

                print(“user:”, results[i]," score:",results[i])

            end

        end

end

THe result is that I have 

#results:     259    

 user:    nil     score:    nil    

 i=    2    

 user:    nil     score:    nil    

 i=    3    

 user:    nil     score:    nil    

…

continues until…

 user:    nil     score:    nil    

 i=    259    

 user:    nil     score:    nil

Ema

#4

Ema,

Just looking at your listener, you are trying to print(“user:”, results[i]," score:",results[i]) should this not be

print(“user:”, results[i].username," score:",results[i].value)

this is my listener

[lua]

local function leaderboardsListener( event )

    if ( event.type == “getScores” and event.error == nil ) then

        print(“in leaderboardsListener event.name:”,event.name," event.type:",event.type," event.error:",event.error," event.response:",event.response )

        local scoreStrings = {}

        local results = json.decode( event.response )

        local maxScores = #results

        if ( maxScores > 10 ) then maxScores = 10 end  --get maximum of 10 high scores

            for i = 1, maxScores do

                local text = string.format( “%-2d - %-15s - %6d”, i, string.sub(results[i].username, 1, 15), results[i].value )

                scoreStrings[i] = display.newText( text, 0, 0, nil, 16 )

                scoreStrings[i].x = display.contentCenterX - 32

                scoreStrings[i].y = 100 + i * 24

            end

        end

    end

[/lua]

#5

The problem is that if results[i] is nil, results[i].username will throw an exception.

What I do not get is that #results is a number, but the actual table seems to be empty.
Also Lua Glider watch shows [].

Is it your listner working?

Ema
 

#6

Your code is working… Just tried…

Interesting.

Many thanks.

I’ll try to implement a UI for the leaderboard soon. I’ll share my code if I get it.

Ema

#7

Ha was just writing to tell you that I swapped in your listener in my code and was getting the same result as you.

You are welcome. I was just wondering, have you created your own UI for registering users and logging in or are you using the gameNetwork dashboard?

#8

Let me look into it.  Something may have gotten missed in the change to the API.

#9

will the api change this? response thing?

#10

Okay I worked on the leaderboard code and found out where some stuff got missed when copying/pasting and the new API.  Here is the working code:

  local leaderboards = cloud.leaderboards ------- local function leaderboardsListener( event )     if ( event.type == "getScores" and event.error == nil ) then         local scoreStrings = {}         local results = json.decode(event.response)         local maxScores = #results         if ( maxScores \> 10 ) then maxScores = 10 end  --get maximum of 10 high scores         for i = 1, maxScores do             local text = string.format( "%-2d - %-15s - %6d", i, string.sub(results[i].username, 1, 15), results[i].value )             scoreStrings[i] = display.newText( text, 0, 0, "Courier", 16 )             scoreStrings[i]:setReferencePoint(display.TopLeftReferencePoint)             scoreStrings[i].x = 20             scoreStrings[i].y = 100 + i \* 24         end     elseif event.type == "submitHighScore" then         print(event.response)     end end leaderboards.setListener( leaderboardsListener )  

The old API did the json.decode for you and returned event.results, the new API returns event.response and doesn’t json.decode the data for the calls.

We are getting the guide updated.

#11

I have been trying to do this today too, and came across the same problems. You have to register a user and login before you call leaderboard.getScores() thats why you are getting  {“error”:“User authentication token is not present in the request parameters.”}

I am using the same leaderboardListener you have, which is showing a list of scores from 3 different user accounts I have created in the simulator, but I am still getting the blank white page when I try to see my leaderboard in the Corona Cloud Dashboard

Also I read in another post that that the event.response is returned as a json so where you have

local results = event.response

I changed it to

local results = json.decode( event.response )

#12

Thank you Gooner87,

I just realized that I need to call this after the user is logged.

I was also able to submit a score to a leaderboard (I saw the response correctly).

But now when I try to call leaderboards.getScores( myLeaderBoard )  (I’m doing this just after the login):

with this:

function leaderboardsListener( event )

    print(“in leaderboardsListener event.name:”,event.name," event.type:",event.type," event.error:",event.error," event.response:",event.response )

    if ( event.type == “getScores” and event.error == nil ) then

        local results = event.response – not event.results

        print("#results: ",#results)

            for i = 1, #results do

                print(“i=”,i)

                print(“user:”, results[i]," score:",results[i])

            end

        end

end

THe result is that I have 

#results:     259    

 user:    nil     score:    nil    

 i=    2    

 user:    nil     score:    nil    

 i=    3    

 user:    nil     score:    nil    

…

continues until…

 user:    nil     score:    nil    

 i=    259    

 user:    nil     score:    nil

Ema

#13

Ema,

Just looking at your listener, you are trying to print(“user:”, results[i]," score:",results[i]) should this not be

print(“user:”, results[i].username," score:",results[i].value)

this is my listener

[lua]

local function leaderboardsListener( event )

    if ( event.type == “getScores” and event.error == nil ) then

        print(“in leaderboardsListener event.name:”,event.name," event.type:",event.type," event.error:",event.error," event.response:",event.response )

        local scoreStrings = {}

        local results = json.decode( event.response )

        local maxScores = #results

        if ( maxScores > 10 ) then maxScores = 10 end  --get maximum of 10 high scores

            for i = 1, maxScores do

                local text = string.format( “%-2d - %-15s - %6d”, i, string.sub(results[i].username, 1, 15), results[i].value )

                scoreStrings[i] = display.newText( text, 0, 0, nil, 16 )

                scoreStrings[i].x = display.contentCenterX - 32

                scoreStrings[i].y = 100 + i * 24

            end

        end

    end

[/lua]

#14

The problem is that if results[i] is nil, results[i].username will throw an exception.

What I do not get is that #results is a number, but the actual table seems to be empty.
Also Lua Glider watch shows [].

Is it your listner working?

Ema
 

#15

Your code is working… Just tried…

Interesting.

Many thanks.

I’ll try to implement a UI for the leaderboard soon. I’ll share my code if I get it.

Ema

#16

Ha was just writing to tell you that I swapped in your listener in my code and was getting the same result as you.

You are welcome. I was just wondering, have you created your own UI for registering users and logging in or are you using the gameNetwork dashboard?

#17

Let me look into it.  Something may have gotten missed in the change to the API.

#18

will the api change this? response thing?

#19

Okay I worked on the leaderboard code and found out where some stuff got missed when copying/pasting and the new API.  Here is the working code:

  local leaderboards = cloud.leaderboards ------- local function leaderboardsListener( event )     if ( event.type == "getScores" and event.error == nil ) then         local scoreStrings = {}         local results = json.decode(event.response)         local maxScores = #results         if ( maxScores \> 10 ) then maxScores = 10 end  --get maximum of 10 high scores         for i = 1, maxScores do             local text = string.format( "%-2d - %-15s - %6d", i, string.sub(results[i].username, 1, 15), results[i].value )             scoreStrings[i] = display.newText( text, 0, 0, "Courier", 16 )             scoreStrings[i]:setReferencePoint(display.TopLeftReferencePoint)             scoreStrings[i].x = 20             scoreStrings[i].y = 100 + i \* 24         end     elseif event.type == "submitHighScore" then         print(event.response)     end end leaderboards.setListener( leaderboardsListener )  

The old API did the json.decode for you and returned event.results, the new API returns event.response and doesn’t json.decode the data for the calls.

We are getting the guide updated.