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adventuregamestudio / ags

AGS editor and engine source code
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Backport importing indexed PNGs as room backgrounds and masks (AGS 4 -> AGS 3) #2434

Closed ivan-mogilko closed 6 months ago

ivan-mogilko commented 6 months ago

This ports minimal necessary code from AGS 4 to AGS 3, letting users to import indexed PNGs (of any palette size) as 8-bit room backgrounds and masks.

I am not certain why this was never added to ags3 branch, perhaps simply forgotten. I think this was addressed for ags4 in issues #1771 and #1772.

I copied only minimal necessary code from BitmapExtensions class, and it seems that, combined with the recent support for small palette image import, this allows to import any indexed PNGs as room bgs and masks.

ericoporto commented 6 months ago

Well, adding significant "weird" code at bitmap loading I felt in ags4 was easier to experiment. Now that this code has been used for a while I think it feels safe to add to ags3.

Did you also check #1769 ?

ivan-mogilko commented 6 months ago

1769 contains fixes for handling of rooms in managed code. But one small fix is applicable to ags3, which is saving masks in requested image format instead of always bmp.