Mame 0187 save and load states and pause

[evilsidius]

Hello guys, i am new to all this, so sorry if this is a noob question.

Well, for now i use my pc for play. In the future i am thinking to build a arcade. But for now i use my windows 10 with a xbox controller.
I have 3 questions.

1 - What i want is to make the save state and load state more simple using only one button, is that possible? I just want to use position 1. So there is a way to assign one button for save in position 1 and another button to load from position 1?

2 - I want Pause the emulation and save or load and i still want the emulation paused. There is a way?
Let me explain this better, those that use the fusion emulator for mega drive, if you pause emulation and load a state you can notice that the emulation will still be on pause. After you press pause again that the emulation will start on the loaded file. I dont know if i make myself clear. English isnt my first language.

Anyway, hope you can help me, thanks you all.

[headkaze]

You could achive what you want using MAME's Lua plugin system.

I created a basic load/save state plugin you can use a guide.

savestate_plugin.zip

[KenToad]

Doesn't MAME support this natively? It seems to me like I have paused emulation, hit the save state button, then when I load state, it remembers that it was paused. I'm thinking of an older version of MAME.

[headkaze]

Doesn't MAME support this natively? It seems to me like I have paused emulation, hit the save state button, then when I load state, it remembers that it was paused. I'm thinking of an older version of MAME.

You could be right. I just knocked up a plugin as proof-of-concept.

[evilsidius]

Thanks, when i get home at weekend i will try.
About the pause, when i load here the game starts. Maybe ita a option somewhere?

[evilsidius]

Doesn't MAME support this natively? It seems to me like I have paused emulation, hit the save state button, then when I load state, it remembers that it was paused. I'm thinking of an older version of MAME.

You could be right. I just knocked up a plugin as proof-of-concept.

Headkaze, your plugin worked. Thanks a lot.
But still, when i pause (P) the emulation and used your plugin to save, automatically the emulation started with the message that save was sucefull in front of the game.

I would like to save and load and the emulation stayed on pause. Or at least didint show any message of save sucefull or load sucefull. There is a option?

[Howard_Casto]

Mame, unfortunately, isn't made with the user in mind.  The only reason we got save states at all is the fact that they make it easier for devs to troubleshoot bugs. 

[headkaze]

I would like to save and load and the emulation stayed on pause. Or at least didint show any message of save sucefull or load sucefull. There is a option?

Yes, just add an "emu.pause()" statement after loading/saving the state.

Eg.

Code: [Select]

local function savestate_menu_callback(index, event)
if event == "select" then
local menu_item = savestate_menu[index][1]

if menu_item == "Load State" then manager:machine():load("auto")
elseif menu_item == "Save State" then manager:machine():save("auto")
end

emu.pause()
end
return false
end

[Howard_Casto]

Isn't emu.pause a toggle?

[headkaze]

Isn't emu.pause a toggle?

Nope, as per luaengine.cpp source it's:

Code: [Select]

* emu.pause() - pause emulation
 * emu.unpause() - unpause emulation

[Howard_Casto]

Well that's great.  Most emulator lua implementations have pause screwed up in some way.  Thanks for teaching me something yet again.