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Fixed sprite flipping and sprite disabling (actually a bit that invertes the x offset value)

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This commit is contained in:
Angelo Salese 2009-11-25 14:21:55 +00:00
parent f47855ec04
commit fe2987870a
1 changed files with 26 additions and 16 deletions
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42
src/mame/drivers/sub.c
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@ -5,9 +5,10 @@ Submarine (c) 1985 Sigma
driver by David Haywood & Angelo Salese
TODO:
- finish spriteram hook-up;
- finish dip-switches;
- a bunch of unemulated writes at 0xe***
- a bunch of unemulated writes at 0xe*** (I believe that there are individual
flip screen x & y)
- flip screen support;
======================================================================================
@ -141,19 +142,31 @@ VIDEO_UPDATE(sub)
}
}
/*
sprite bank 1
0 xxxx xxxx X offset
1 tttt tttt tile offset
sprite bank 2
0 yyyy yyyy Y offset
1 f--- ---- flips the X offset
1 -f-- ---- flip y, inverted
1 --cc cccc color
*/
{
int x,y,spr_offs,i,col;
UINT8 x,y,spr_offs,i,col,fx,fy;
for(i=0;i<0x40;i+=2)
{
spr_offs = spriteram[i+1];
//x = sub_sprx[i];
y = 0xe0 - spriteram_2[i+1];
x = spriteram[i+0];
col = (spriteram_2[i+0])&0x3f; // or 1f?
//spriteram[i+0] & 0x80 should be flip y
y = 0xe0 - spriteram_2[i+1];
col = (spriteram_2[i+0])&0x3f;
fx = (spriteram_2[i+0] & 0x80) ? 0 : 1;
if(fx) { x = 0xe0 - x; }
fy = (spriteram_2[i+0] & 0x40) ? 0 : 1;
drawgfx_transpen(bitmap,cliprect,screen->machine->gfx[1],spr_offs,col,0,0,x,y,0);
drawgfx_transpen(bitmap,cliprect,screen->machine->gfx[1],spr_offs,col,0,fy,x,y,0);
}
}
@ -284,7 +297,7 @@ static INPUT_PORTS_START( sub )
PORT_DIPSETTING( 0x80, DEF_STR( 1C_5C ) )
PORT_DIPSETTING( 0x90, DEF_STR( 1C_6C ) )
PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) )
// Duplicates
// Duplicates
// PORT_DIPSETTING( 0xa0, DEF_STR( 1C_3C ) )
// PORT_DIPSETTING( 0xb0, DEF_STR( 1C_5C ) )
// PORT_DIPSETTING( 0xc0, DEF_STR( 1C_6C ) )
@ -297,16 +310,13 @@ static INPUT_PORTS_START( sub )
PORT_DIPSETTING( 0x01, "4" )
PORT_DIPSETTING( 0x02, "5" )
PORT_DIPSETTING( 0x03, "6" )
// Duplicates
// PORT_DIPSETTING( 0x04, "3" )
// PORT_DIPSETTING( 0x05, "4" )
// PORT_DIPSETTING( 0x06, "5" )
// PORT_DIPSETTING( 0x07, "6" )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Flip_Screen ) )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )