Posted: 11/1/2013 3:54 AM
Post subject: Easy question about LUA scripting
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Tterraj42
Joined: 11/1/2013
Posts: 13
Trying to make my script load a save state when it starts. Looking at the notes here: https://code.google.com/p/vba-rerecording/wiki/LuaScriptingFunctions I tried this: local asdf savestate.create(1) savestate.load(asdf) Which gave me this: ..\VisualBoyAdvance\lua\mmbn 3 blue flashman.lua:40: object not a savestate object Very new to TAS and LUA. What obvious mistake am I making? Thanks, Tterraj42
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Posted: 11/1/2013 2:04 PM
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TASeditor
Editor, Skilled player (1506)
Joined: 7/9/2010
Posts: 1317
Glitchy TAS of 2015 NES TASer of 2014 Speedy TAS of 2014 NES TAS of 2013
Maybe you should put savestate.save(asdf) into your script.
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Posted: 11/1/2013 3:14 PM
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Tterraj42
Joined: 11/1/2013
Posts: 13
TASeditor wrote:
Maybe you should put savestate.save(asdf) into your script.
But the save state already exists, and I want the script to load it.
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Posted: 11/1/2013 4:24 PM
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feos
Site Admin, Skilled player (1237)
Joined: 4/17/2010
Posts: 11274
Location: RU
NES TAS of 2011
I think what exists is an empty object. You assign the value to it by saving something.
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Posted: 11/1/2013 4:26 PM
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DeHackEd
Emulator Coder, Site Developer, Former player
Joined: 11/6/2004
Posts: 833
I think there's an = sign missing It's being interpreted as 
local asdf;
savestate.create(1);
savestate.load(asdf)
since semicolons are optional in lua
Posted: 11/1/2013 4:40 PM
Quote
Bobo_the_King
Player (79)
Joined: 8/5/2007
Posts: 865
The following has never failed me: 
Language: lua
state1=savestate.create()
savestate.save(state1)

--[[
a bunch of code
emu.frameadvance()
some more code
]]--

savestate.load(state1)
It has some differences with your code. Try copying and pasting it and working from that framework. Report back if you figure out what the problem was. (My money is on the equals sign, as DeHackEd mentioned, provided that you copied your code accurately.)
Posted: 11/1/2013 7:36 PM
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BadPotato
Joined: 1/26/2009
Posts: 558
Location: Canada - Québec
Usualy this code should work with emulator based on fceux lua engine, but for some reason it doesn't work with vba-rr. 
mySavestate = savestate.create(1); 
savestate.load(mySavestate);
Posted: 11/2/2013 10:07 AM
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FractalFusion
Editor, Skilled player (1941)
Joined: 6/15/2005
Posts: 3247
Glitchy TAS of 2013 Gameboy TAS of 2013 PSX TASer of 2010
VBA's Lua savestating is messed up, unfortunately. Don't use it. - savestate.create() only works in VBA when there is nothing in the brackets (e.g. savestate.create(1) doesn't work). - Savestates created by Lua in VBA may cause desyncs.