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fix garbage at top of screen?

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This commit is contained in:
Michaël Banaan Ananas 2014-07-28 15:29:17 +00:00
parent 41f3e99dea
commit eaa9a2714f
1 changed files with 11 additions and 13 deletions
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24
src/mame/video/homerun.c
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@ -13,7 +13,7 @@
CUSTOM_INPUT_MEMBER(homerun_state::homerun_sprite0_r)
{
// sprite-0 vs background collision status, similar to NES
return (m_screen->vpos() > (m_spriteram[0] - 15)) ? 1 : 0;
return (m_screen->vpos() > (m_spriteram[0] - 16 + 1)) ? 1 : 0;
}
WRITE8_MEMBER(homerun_state::homerun_scrollhi_w)
@ -115,25 +115,23 @@ void homerun_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprec
for (offs = m_spriteram.bytes() - 4; offs >= 0; offs -= 4)
{
if (spriteram[offs + 0] == 0)
continue;
int sy = spriteram[offs + 0] - 16 + 1;
int sx = spriteram[offs + 3];
int sy = spriteram[offs + 0] - 15;
int code = (spriteram[offs + 1]) | ((spriteram[offs + 2] & 0x8) << 5) | ((m_gfx_ctrl & 3) << 9);
int color = (spriteram[offs + 2] & 0x07) | 8;
int flipx = (spriteram[offs + 2] & 0x40) >> 6;
int flipy = (spriteram[offs + 2] & 0x80) >> 7;
m_gfxdecode->gfx(1)->transpen(bitmap,cliprect,
code,
color,
flipx,flipy,
sx,sy,0);
if (sy >= 0)
{
m_gfxdecode->gfx(1)->transpen(bitmap, cliprect, code, color, flipx, flipy, sx, sy, 0);
// wraparound
m_gfxdecode->gfx(1)->transpen(bitmap,cliprect,
code,
color,
flipx,flipy,
sx-256,sy,0);
// wraparound x
m_gfxdecode->gfx(1)->transpen(bitmap, cliprect, code, color, flipx, flipy, sx - 256 , sy, 0);
}
}
}