Difference between revisions of "FBInstant.getLeaderboardAsync"

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{{FBInstant}}

Revision as of 18:20, 25 March 2020


Available since: Gideros 2018.3
Class: * Initialisation and Core

Description


Fetch a specific leaderboard belonging to this Instant Game.

 FBInstant.getLeaderboardAsync(name,callback)

Parameters

name: (string) The name of the leaderboard. Each leaderboard for an Instant Game must have its own distinct name.
callback: (function) A function that will be called with two arguments: Result with the matching leaderboard, rejecting if one is not found. An error code if the function failed.

Examples

Example

FBInstant.getLeaderboardAsync("my_aweome_leaderboard", function(result,error)
	print("getLeaderboardAsync result:",result)
end)
<br/>

Example 2

FBInstant.getLeaderboardAsync("my_aweome_leaderboard", function(result,error)
	print("name",result:getName()) -- should display 'my__awesome_leaderboard'
	print("context id",result:getContextID()) -- eg 12345678 or null if not tied to a context
	result:getEntryCountAsync( function (result,error) -- Fetches the total number of player entries in the leaderboard.
		if result then
			print("Count",result)
		end
	end)
	
--Update the player's score. If the player has an existing score, the old score will only be replaced if the new score is better than it.
-- NOTE: If the leaderboard is associated with a specific context, the game must be in that context to set a score for the player.
	result:setScoreAsync(level,FBInstant.player.getName(),function(self,result,entry)
		if result then
			print("score ok",entry)
			for key,val in pairs(entry.entry) do
				print(key,val)
			end
		end
	end)
	
-- Retrieves the leaderboard's entry for the current player, or null if the player has not set one yet.
	result:getPlayerEntryAsync( function (self,result,entry)
		if entry and entry.entry then -- important you check this as it may not exist...
			for key,val in pairs(entry.entry) do
				print(key,val)
				if key=="player" then
					for key2,val2 in pairs(val) do
						print(" ",key2,val2)
					end
				end
			end
		end
	end)
	
-- Retrieve a set of leaderboard entries, ordered by score ranking in the leaderboard.	
-- parameter: count number The number of entries to attempt to fetch from the leaderboard. Defaults to 10 if not specified. Up to a maximum of 100 entries may be fetched per query.
-- parameter: offset number The offset from the top of the leaderboard that entries will be fetched from.
	result:getEntriesAsync(10,0,function(self,result,entries)
		print(self,result,entries)
		for loop=1,#entries do
			local e=entries[loop].entry
			print("at entry",loop)
			for key,val in pairs(e) do
				print(key,val)
				if key=="player" then
					for key2,val2 in pairs(val) do
						print(" ",key2,val2)
					end
				end
			end
		end
	end)
	
-- Most useful of all:

-- Retrieve a set of connected player leaderboard entries, ordered by score ranking in the leaderboard.	
-- parameter: count number The number of entries to attempt to fetch from the leaderboard. Defaults to 10 if not specified. Up to a maximum of 100 entries may be fetched per query.
-- parameter: offset number The offset from the top of the leaderboard that entries will be fetched from.
	result:getConnectedPlayerEntriesAsync(10,0,function(self,result,entries)
		print(self,result,entries)
		for loop=1,#entries do
			local e=entries[loop].entry
			print("at entry",loop)
			for key,val in pairs(e) do
				print(key,val)
				if key=="player" then
					for key2,val2 in pairs(val) do
						print(" ",key2,val2)
					end
				end
			end
		end
	end)
	
end)
<br/>

Example 3 - global leaderboard

	FBInstant.getLeaderboardAsync("my_aweome_leaderboard",function (e,error)
		print("global leaderboard event",e)
		if e then
			for key,value in pairs(e) do
				print(key,value)
			end
		else
			print("global leaderboard error",error)
		end
	end)
<br/>

Example 4 - group leaderboard

	fbContextId=FBInstant.context.getID()
	if fbContextId~="null" then
		print("context",fbContextId)
		FBInstant.getLeaderboardAsync("Highest Level Achievers."..fbContextId,function (e,error)
			print("group leaderboard event",e)
			print("group leaderboard error",error)
		end)
	else
		print("You may have tried to access a context high score in solo mode!")
	end
<br/>




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