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improve wc90 sprite handling a little (nw)

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David Haywood 2015-09-15 23:52:30 +01:00
parent 4e618cb657
commit a114756e3d
1 changed files with 3 additions and 1 deletions
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src/mame/video/tecmo_spr.c
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@ -330,7 +330,9 @@ void tecmo_spr_device::draw_wc90_sprites(bitmap_ind16 &bitmap, const rectangle &
code = ( spriteram[offs+2] ) + ( spriteram[offs+3] << 8 ); code = ( spriteram[offs+2] ) + ( spriteram[offs+3] << 8 );
int xpos = spriteram[offs + 8] + ( (spriteram[offs + 9] & 3 ) << 8 ); int xpos = spriteram[offs + 8] + ( (spriteram[offs + 9] & 3 ) << 8 );
int ypos = spriteram[offs + 6] + ( (spriteram[offs + 7] & 1 ) << 8 ) + m_yoffset; int ypos = spriteram[offs + 6] + m_yoffset;
ypos &= 0xff; // sprite wrap right on edge (top @ ROT0) of pac90
ypos = ypos - ((spriteram[offs + 7] & 1) << 8); // sprite wrap on top of wc90
if (xpos >= 0x0300) xpos -= 0x0400; if (xpos >= 0x0300) xpos -= 0x0400;