fceux/branches/voxel/output/luaScripts/Rewinder.lua

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-- NES Braidulator VERSION 1
--(C) Antony Lavelle 2009 got_wot@hotmail.com http://www.the-exp.net
-- A Lua script that allows 'Braid' style time reversal for Nes games being run in FCEUX
--'Braid' is copyright Jonathan Blow, who is not affiliated with this script, but you should all buy his game because it's ace.
--This is my first ever time scripting in Lua, so if you can improve on this idea/code please by all means do and redistribute it, just please be nice and include original credits along with your own :)
--Change these settings to adjust options
--Which key you would like to function as the "rewind key"
local rewindKey = 'select'
--How much rewind power would you like? (The higher the number the further back in time you can go, but more computer memory is used up)
--Do not set to 0!
local saveMax = 1000;
--The stuff below is for more advanced users, enter at your own peril!
local saveArray = {};--the Array in which the save states are stored
local saveCount = 1;--used for finding which array position to cycle through
local save; -- the variable used for storing the save state
local rewindCount = 0;--this stops you looping back around the array if theres nothing at the end
local savePreventBuffer = 1;--Used for more control over when save states will be saved, not really used in this version much.
while (true) do
savePreventBuffer = savePreventBuffer-1;
if savePreventBuffer==0 then
savePreventBuffer = 1;
end;
joyput = joypad.read(1);
if joyput[rewindKey] then
savePreventBuffer = 5;
if rewindCount==0 then
--makes sure you can't go back too far could also include other things in here, left empty for now.
else
savestate.load(saveArray[saveCount]);
saveCount = saveCount-1;
rewindCount = rewindCount-1;
if saveCount==0 then
saveCount = saveMax-1;
end;
end;
end;
if savePreventBuffer==1 then
gui.text(80,15,"");
saveCount=saveCount+1;
if saveCount==saveMax then
saveCount = 1;
end
rewindCount = rewindCount+1;
if rewindCount==saveMax-1 then
rewindCount = saveMax-2;
end;
save = savestate.create();
savestate.save(save);
saveArray[saveCount] = save;
end;
local HUDMATH = (math.ceil((100/saveMax)*rewindCount));--Making the rewind time a percentage.
local HUDTEXT = "REWIND POWER: ".. HUDMATH .."%";
gui.text(80,5,HUDTEXT);--Displaying the time onscreen.
FCEU.frameadvance();
end;