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hiscore: only you can prevent namespace pollution (nw)
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cracyc
parent
8e41d3105b
commit
21390cd790
1 changed files with 39 additions and 35 deletions
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@ -5,7 +5,7 @@
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-- high-score saving with hiscore.dat infom just as older
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-- builds did in the past.
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--
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require('lfs')
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local exports = {}
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exports.name = "hiscore"
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exports.version = "1.0.0"
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@ -22,19 +22,19 @@ end
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function hiscore.startplugin()
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hiscoredata_path = "hiscore.dat";
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hiscore_path = "hi";
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local hiscoredata_path = "hiscore.dat";
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local hiscore_path = "hi";
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current_checksum = 0;
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default_checksum = 0;
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local current_checksum = 0;
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local default_checksum = 0;
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scores_have_been_read = false;
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mem_check_passed = false;
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current_game = "";
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local scores_have_been_read = false;
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local mem_check_passed = false;
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local found_hiscore_entry = false;
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positions = {};
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local positions = {};
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function parse_table ( dsting )
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local function parse_table ( dsting )
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local _table = {};
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for line in string.gmatch(dsting, '([^\n]+)') do
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local cpu, mem;
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@ -59,8 +59,9 @@ function hiscore.startplugin()
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end
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function read_hiscore_dat ()
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file = io.open( hiscoredata_path, "r" );
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local function read_hiscore_dat ()
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local file = io.open( hiscoredata_path, "r" );
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local rm_match;
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if not file then
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file = io.open( hiscore_plugin_path .. "/hiscore.dat", "r" );
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end
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@ -69,8 +70,8 @@ function hiscore.startplugin()
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else
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rm_match = '^' .. emu.romname() .. ':';
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end
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cluster = "";
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current_is_match = false;
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local cluster = "";
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local current_is_match = false;
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if file then
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repeat
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line = file:read("*l");
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@ -99,7 +100,7 @@ function hiscore.startplugin()
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end
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function check_mem ( posdata )
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local function check_mem ( posdata )
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if #posdata < 1 then
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return false;
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end
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@ -116,7 +117,8 @@ function hiscore.startplugin()
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end
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function get_file_name ()
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local function get_file_name ()
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local r;
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if emu.softname() ~= "" then
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r = hiscore_path .. '/' .. emu.romname() .. "_" .. emu.softname() .. ".hi";
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else
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@ -126,12 +128,12 @@ function hiscore.startplugin()
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end
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function write_scores ( posdata )
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local function write_scores ( posdata )
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print("write_scores")
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local output = io.open(get_file_name(), "wb");
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if not output then
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-- attempt to create the directory, and try again
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os.execute( "mkdir " .. hiscore_path );
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lfs.mkdir( hiscore_path );
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output = io.open(get_file_name(), "wb");
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end
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print("write_scores output")
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@ -149,7 +151,7 @@ function hiscore.startplugin()
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end
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function read_scores ( posdata )
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local function read_scores ( posdata )
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local input = io.open(get_file_name(), "rb");
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if input then
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for ri,row in ipairs(posdata) do
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@ -166,12 +168,12 @@ function hiscore.startplugin()
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end
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function check_scores ( posdata )
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local function check_scores ( posdata )
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local r = 0;
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-- commonly the first entry will be for the entire table
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-- so it will only trigger a write once a player enters
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-- his/her name in.
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row = positions[1];
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local row = positions[1];
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for i=0,row["size"]-1 do
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r = r + row["mem"]:read_u8( row["addr"] + i );
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end
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@ -179,7 +181,7 @@ function hiscore.startplugin()
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end
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function init ()
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local function init ()
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if not scores_have_been_read then
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if check_mem( positions ) then
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default_checksum = check_scores( positions );
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@ -201,7 +203,7 @@ function hiscore.startplugin()
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local last_write_time = -10;
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function tick ()
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local function tick ()
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-- set up scores if they have been
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init();
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-- only allow save check to run when
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@ -225,27 +227,26 @@ function hiscore.startplugin()
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end
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end
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function reset()
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local function reset()
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-- the notifier will still be attached even if the running game has no hiscore.dat entry
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if mem_check_passed and (emu.romname() == current_game) then
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if mem_check_passed and found_hiscore_entry then
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local checksum = check_scores(positions)
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if checksum ~= current_checksum and checksum ~= default_checksum then
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write_scores(positions)
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end
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end
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current_game = ""
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found_hiscore_entry = false
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mem_check_passed = false
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scores_have_been_read = false;
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end
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emu.register_start(function()
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current_game = ""
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found_hiscore_entry = false
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mem_check_passed = false
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scores_have_been_read = false;
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last_write_time = -10
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print("Starting " .. emu.gamename())
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current_game = emu.romname()
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dat = read_hiscore_dat()
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local dat = read_hiscore_dat()
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if dat and dat ~= "" then
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print( "found hiscore.dat entry for " .. emu.romname() );
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positions = parse_table( dat );
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@ -253,11 +254,14 @@ function hiscore.startplugin()
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print("hiscore.dat parse error");
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return;
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end
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found_hiscore_entry = true
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end
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end)
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emu.register_frame(function()
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if found_hiscore_entry then
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tick()
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end
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emu.sethook( tick, "frame" );
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end)
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emu.register_stop(function()
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reset()
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end)
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