 No.20410
hap Developer
Jul 26, 2022, 21:17
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plugins/layout/init.lua local function prepare_layout(file, script) is called twice Meaning, 2 same scripts get loaded (and will run) in parallel. There's a bug somewhere in MAME causing the script to be loaded twice. Since the script for mdndclab is for toggling outputs by clicking, it will instead strobe them. |
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No.20411
hap Developer
Jul 26, 2022, 22:10
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As workaround, at line 17 in plugins/layout/init.lua (under local function prepare_layout(file, script)) add: scripts = {} But the real bug is, it shouldn't call this function twice. |
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No.20412
hap Developer
Jul 27, 2022, 12:35
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How to show that it really is running 2 scripts in parallel: open chessmstdm.lay add a local count var, increment it each frame, and do: emu.print_error(tostring(count)) result: 1 1 2 2 3 3 4 4 |
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No.20413
hap Developer
Jul 27, 2022, 12:45
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Ah, now I see why. It's because the snapshot 'target' loads the script too. So, do for example: mame mdndclab -numscreens 2 Now it loads 3 scripts, each wall click will do toggle->toggle->toggle, and since it's an uneven amount it will work in this case. In other words: layout scripts should be wary about globals? Such as a shared output tag. |
 No.20414
Bletch Developer
Jul 27, 2022, 22:41
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In my opinion the problem is the contortions that the layout script goes through to set up mouse clicks. Even if there are multiple layouts (and corresponding script instances) loaded for each screen, and even a "bogus" one for snapshots, the problem is that they all on their own try to monitor the mouse and figure out when (and where) clicks occur - exhibit A; the `get_mouse` function in mdndclab.lay Layout scripts should have a clean, consistent mechanism to receive click events without looking at uimouse or having to do anything for aspect ratios. That way, if one has multiple screens open, and the user clicks on one of the windows, the script instances for the other windows (and the snapshot target) don't independently respond to the event. I might just try to whip up a POC |