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00230: On the emulated game when the waves are near the border of the screen you can see them on the other side. This is wrong.

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This commit is contained in:
Roberto Zandona 2009-03-14 11:39:17 +00:00
parent 0095575e01
commit 9bbca338d4
1 changed files with 26 additions and 3 deletions
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29
src/mame/video/m57.c
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@ -174,11 +174,34 @@ WRITE8_HANDLER( m57_flipscreen_w )
static void draw_background(running_machine *machine, bitmap_t *bitmap, const rectangle *cliprect)
{
int y;
int y,x;
for (y = 0; y < 128; y++)
tilemap_set_scrollx(bg_tilemap, y, (y < 64) ? 0 : m57_scroll[64]);
for (y = 0; y < 256; y++)
tilemap_set_scrollx(bg_tilemap, y, (y < 64) ? 0 : (y < 128) ? m57_scroll[64] : m57_scroll[y]);
tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0);
for (y = 128; y <= cliprect->max_y; y++)
{
if (m57_scroll[y] < 128)
{
for (x = cliprect->min_x; x <= cliprect->max_x; x++)
{
if ((x + m57_scroll[y]) <= cliprect->max_x)
*BITMAP_ADDR16(bitmap, y, x) = *BITMAP_ADDR16(bitmap, y, x + m57_scroll[y]);
else
*BITMAP_ADDR16(bitmap, y, x) = *BITMAP_ADDR16(bitmap, y, cliprect->max_x);
}
} else {
for (x = cliprect->max_x; x >= cliprect->min_x; x--)
{
if ((x + m57_scroll[y] - 256) >= cliprect->min_x)
*BITMAP_ADDR16(bitmap, y, x) = *BITMAP_ADDR16(bitmap, y, x + m57_scroll[y] - 256);
else
*BITMAP_ADDR16(bitmap, y, x) = *BITMAP_ADDR16(bitmap, y, cliprect->min_x);
}
}
}
}
/*************************************