Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-06-01 02:21:48 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

ssv: improvements to the sprite position [Roberto Zandona']

Browse Source
This commit is contained in:
Roberto Zandona 2011-01-15 15:32:16 +00:00
parent 7d220e5a9e
commit 33885f5fad
1 changed files with 23 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
src/mame/video/ssv.c
View File

@ -784,7 +784,7 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
tilemaps_offsy = ((s2[3] & 0x1ff) - (s2[3] & 0x200));
/* Every single sprite is offset by x & yoffs, and additionally
by one of the 8 x & y offsets in the 1c0040-1c005f area */
by one of the 8 x & y offsets in the 1c0040-1c005f area */
xoffs += ssv_scroll[((mode & 0x00e0) >> 4) + 0x40/2];
yoffs += ssv_scroll[((mode & 0x00e0) >> 4) + 0x42/2];
@ -829,7 +829,7 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
scroll = s2[ 0 ]; // scroll index
if (ssv_scroll[0x76/2] & 0x1000)
sy -= 0x20; // kludge for eaglshot
sy -= 0x20; // eaglshot
else
{
if (ssv_scroll[0x7a/2] & 0x0800)
@ -900,54 +900,47 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
sx = (sx & 0x1ff) - (sx & 0x200);
sy = (sy & 0x1ff) - (sy & 0x200);
sprites_offsx = ((ssv_scroll[0x74/2] & 0x7f) - (ssv_scroll[0x74/2] & 0x80)) - ((ssv_scroll[0x7a/2] & 0x0800) >> 8);
sprites_offsx = ((ssv_scroll[0x74/2] & 0x7f) - (ssv_scroll[0x74/2] & 0x80)) +
(((ssv_scroll[0x74/2] & 0x1000) && ((ssv_scroll[0x74/2] & 0x2000) == 0))
? ((ssv_scroll[0x7a/2] & 0x0800) >> 8) : -((ssv_scroll[0x7a/2] & 0x0800) >> 8)) - 0;
sprites_offsy = (-1)*((ssv_scroll[0x70/2] & 0x1ff) - (ssv_scroll[0x70/2] & 0x200)
+ ssv_scroll[0x6a/2] + 1) - (((ssv_scroll[0x7a/2] ^ 0x0800) & 0x0800) >> 8);
sprites_offsy = (-1)*((ssv_scroll[0x70/2] & 0x1ff) - (ssv_scroll[0x70/2] & 0x200) + ssv_scroll[0x6a/2] + 1) -
(((ssv_scroll[0x7a/2] ^ 0x0800) & 0x0800) >> 8) - 0;
if (ssv_scroll[0x74/2] & 0x4000) // srmp7, twineag2, ultrax, vasara
if (ssv_scroll[0x74/2] & 0x4000) // flipscreen y
{
sy = -sy;
if (ssv_scroll[0x74/2] & 0x8000)
sy += 0x00; // srmp7, twineag2, ultrax
sy += 0x00; //
else
sy -= 0x10; // vasara
sy -= 0x10; // vasara (hack)
}
if (ssv_scroll[0x74/2] & 0x1000)
if (ssv_scroll[0x74/2] & 0x1000) // flipscreen x
{
sx = -sx + 0x100; // -0x20 for eaglshot
sx = -sx + 0x100;
}
// sprites can use x and y coordinates relative to a side, the other side or the center
// for now we use a kludge
// sprites can be relative to a side, the other side or the center
if (ssv_scroll[0x74/2] & 0x8000)
{
if (ssv_scroll[0x76/2] & 0x4000) { // twineag2, ultrax
sx = sprites_offsx + sx - (xnum - 1) * 8;
sy = sprites_offsy - sy - (ynum * 8) / 2;
} else { // srmp7
sx = sprites_offsx + sx;
sy = sprites_offsy - sy;
}
}
else if (ssv_scroll[0x76/2] & 0x1000) // eaglshot
if (ssv_scroll[0x7a/2] & 0x0800)
{
// dynagear, drifto94, eaglshot, keithlcy, mslider, srmp4, stmblade, twineag2, ultrax
sx = sprites_offsx + sx - (xnum - 1) * 8;
sy = sprites_offsy - sy - (ynum * 8) / 2;
}
else if (ssv_scroll[0x70/2] == 0x02fd) // dynagear
else
{
sx = sprites_offsx + sx;
sy = sprites_offsy - sy - (ynum * 8) / 2;
}
else // other games
{
sx = sprites_offsx + sx;
// hypreact, hypreac2, janjans1, meosism, ryorioh, survarts, sxyreact, sxyreac2, vasara, vasara2
sx = sprites_offsx + sx; // not necessary for meosism
sy = sprites_offsy - sy - (ynum - 1) * 8;
}
// srmp7
// sx = sprites_offsx + sx;
// sy = sprites_offsy - sy + 8;
/* Sprite code masking */
if (xnum == 2 && ynum == 4) // needed by hypreact
{