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ikemen-engine / Ikemen-GO

An open-source fighting game engine that supports MUGEN resources.
https://ikemen-engine.github.io
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Afterimage wonkyness #984

Open LasombraDemon opened 1 year ago

LasombraDemon commented 1 year ago

Describe the bug

This code causes a blinking afterimage in MUGEN, and a solid one in IKEMEN Go, reported by Kusaalst.

To Reproduce

[State 0 Shadow] type = AfterImage trigger1 = !time time = 2 length = 8 palcolor = 0 palbright = 0,0,110 palpostbright = 10,10,97 palcontrast = 220,220,220 paladd = 0,0,0 palmul = 1,1,1 framegap = 2

[State 0 Shadow] type = Afterimagetime trigger1 = time%2 = 0 && time >= 0 time = 2

Expected behavior

Afterimage should blink as in first video, is instead solid.

Screenshots / Video

MUGEN: https://streamable.com/fdfmlr

IKEMEN Go 0.98.2: https://streamable.com/gvq7yt

Engine Version (or source code date)

0.98.2

Operating system

Windows

Extra context or search terms

No response

K4thos commented 1 year ago

please upload the character and provide the inputs to do the move.

LasombraDemon commented 1 year ago

Character used in both examples.

Iori_KusaaIst.zip

potsmugen commented 1 year ago

That looks like it's exploiting some bug in the Mugen engine. There's no parameter to make them blink. So it's like you're bringing the afterimage back up in the same frame that it goes away to give that impression.

LasombraDemon commented 1 year ago

The author of the char is Kusaalst, he's been digging deep into the engine and pointed to this one.

I've also run into this: https://github.com/ikemen-engine/Ikemen-GO/issues/378

I think it's probably the same issue.

potsmugen commented 1 year ago

Yeah in that case it looks like the same Mugen bug (feature?) is hiding a mistake in the code whereas Ikemen behaves as expected.