myArcade/myhighscore/api.lua

76 lines
2.2 KiB
Lua
Executable File

-- Store any information we might need for the games that will use highscore
-- (icons, description, or whatever)
myhighscore.registered_games = {}
-- This table will contain a table for each registered game which
-- will be an array of player scores
myhighscore.scores = {}
-- How many scores to keep saved per game
local stored_scores = 50
-- Name of the folder to save the scores to
-- each game highscore list will be saved in a file inside this directory
local score_directory = minetest.get_worldpath().."/myhighscores/"
-- You can register a new arcade game using this function
-- The definition will get added to the table of registered games.
function myhighscore.register_game(name, definition)
definition.description = definition.description or name
myhighscore.registered_games[name] = definition
myhighscore.load_scores(name)
end
-- Returns true if score from A is smaller than score from B
-- Used for sorting the score arra
function myhighscore.is_score_higher(scoreA, scoreB)
return scoreA.score > scoreB.score
end
-- Saves a given score for the given game. "score" will be a table containing at least:
-- player (player name) and score (points)
function myhighscore.save_score(name, score)
local scores = myhighscore.scores[name]
-- Check first if the last score is higher
if scores[stored_scores] and
myhighscore.is_score_higher(scores[stored_scores], score) then
return false
end
table.insert(scores, score)
-- sort the array
table.sort(scores, myhighscore.is_score_higher)
-- check position and remove any extra ones
local pos = 0
for i,sc in pairs(scores) do
if sc == score then
pos = i
elseif i > stored_scores then
scores[i] = nil
end
end
-- save it to disk
local f, err = io.open(score_directory .. name, "w")
f:write(minetest.serialize(scores))
f:close()
-- return the position we hold on the list
return pos
end
-- Read scores from disk for the given game, or initialize the scores table if not present
function myhighscore.load_scores(name)
local f, err = io.open(score_directory .. name, "r")
local data = {}
if f then
data = minetest.deserialize(f:read("*a")) or {}
f:close()
end
myhighscore.scores[name] = data
end
-- Create the scores directory if it doesn't exist!
minetest.mkdir(score_directory)