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Fixed a misplaced sprite bug in Fire Barrel [Angelo Salese]

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This commit is contained in:
Angelo Salese 2010-12-17 18:20:23 +00:00
parent 94043b9c06
commit d5135cead6
1 changed files with 21 additions and 1 deletions
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22
src/mame/video/m107.c
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@ -224,13 +224,33 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
{
while (rom_offs < 0x40000) /* safety check */
{
/*
[1]
x--- ---- end of block marker
---- --x- Flip Y
---- ---x Flip X
[2]
xxxx xxxx Y offs lo byte
[3]
---- xxx- height (1/2/4/8)
---- ---x Y offs hi byte
[4]
xxxx xxxx sprite number lo byte
[5]
xxxx xxxx sprite number hi byte
[6]
xxxx xxxx X offs lo byte
[7]
---- ---x X offs hi byte
*/
int xdisp = rom[rom_offs+6]+256*rom[rom_offs+7];
int ydisp = rom[rom_offs+2]+256*rom[rom_offs+3];
int ffx=fx^(rom[rom_offs+1]&1);
int ffy=fy^(rom[rom_offs+1]&2);
sprite=rom[rom_offs+4]+256*rom[rom_offs+5];
y_multi=1<<((rom[rom_offs+3]>>1)&0x3);
if (fx) xdisp = -xdisp;
if (fx) xdisp = -xdisp-16;
if (fy) ydisp = -ydisp - (16*y_multi-1);
if (!ffy) sprite+=y_multi-1;
for (i=0; i<y_multi; i++)