Black screen instead of stage sprite

[Kiwi1444]

Describe the bug

On the stages Sunrain and JPJD by 月光下的虫 black screen appearing instead of normal sprite

To Reproduce

1. Download and install stage
2. Start the match
   JPJD.zip

Expected behavior

As in Mugen 1.1

Screenshots / Video

Mugen 1.1:

Ikemen Go:

Engine Version (or source code date)

Nightly 2024-11-28

Operating system

Windows

Extra context or search terms

The problem is present in v0.99 too

[K4thos]

most liely caused by incorrect implementation of maskwindow parameter, which based on docs supposed to use stage origin (top-middle of screen), not top-left corner of the screen as the origin.

maskwindow = x1,y1,x2,y2 ; (int, int, int, int) (Version 1.1 and higher)
Specifies a masking window for the background element. A masking window is conceptually a rectangular box on the screen in which the sprite is contained. Any part of the sprite that lies outside of the box will not be drawn. x1,y1 specifies the coordinates of the top-left corner of the window, and x2,y2 specifies the coordinates of the bottom-right corner of the window. These coordinates are relative to the stage origin (top-middle of screen). These coordinates are "endpoint exclusive", i.e. the pixels along the bottom and right edges of the window will not be drawn. If omitted, window masking will not performed.