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Improved sprites in King Derby [Ag

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This commit is contained in:
Angelo Salese 2011-09-08 17:04:39 +00:00
parent 16975a6264
commit 2894dee228
1 changed files with 21 additions and 15 deletions
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36
src/mame/drivers/kingdrby.c
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@ -158,6 +158,12 @@ static VIDEO_START(kingdrby)
tilemap_set_transparent_pen(state->m_sc1_tilemap,0);
}
static const UINT8 hw_sprite[16] =
{
0x34, 0x34, 0x34, 0x34, 0x34, 0x34, 0x34, 0x22,
0x22, 0x22, 0x22, 0x22, 0x22, 0x11, 0x22, 0x22
};
static void draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect)
{
kingdrby_state *state = machine.driver_data<kingdrby_state>();
@ -167,26 +173,26 @@ static void draw_sprites(running_machine &machine, bitmap_t *bitmap, const recta
/*sprites not fully understood.*/
for(count=0;count<0x48;count+=4)
{
int x,y,spr_offs,colour,fx,dx,dy,h,w,mode;
int x,y,spr_offs,colour,fx,dx,dy,h,w;
spr_offs = (spriteram[count]);
spr_offs &=0x7f;
mode = spr_offs;
spr_offs*=4;
colour = (spriteram[count+3] & 0xf0)>>4;
fx = spriteram[count] & 0x80;
if(spriteram[count+1] == 0)
y = 0;
else
y = 0x100-spriteram[count+1];
y = (spriteram[count+1] == 0) ? 0 : 0x100-spriteram[count+1];
x = spriteram[count+2] - ((spriteram[count+3] & 1)<<8);
/*TODO: I really believe that this is actually driven by a prom.*/
if((mode >= 0x168/4) && (mode <= 0x17f/4)) { h = 1; w = 1; }
else if((mode >= 0x18c/4) && (mode <= 0x18f/4)) { h = 1; w = 1; }
else if((mode >= 0x19c/4) && (mode <= 0x19f/4)) { h = 1; w = 1; }
else if((mode & 3) == 3 || (mode) >= 0x13c/4) { h = 2; w = 2; }
else { h = 3; w = 4; }
/* TODO: hardcoded via a table, there must be some other way to do this */
h = (hw_sprite[colour] & 0xf0) >> 4;
w = (hw_sprite[colour] & 0x0f) >> 0;
if(h == 1 && w == 1)
{
spr_offs /= 4;
/* TODO: horse number signs */
spr_offs = 0x16c + (((spr_offs & 8) << 2) ^ 0x20) + ((spr_offs & 4) << 2) + (spr_offs & 3);
}
if(fx)
{
@ -385,7 +391,7 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( slave_map, AS_PROGRAM, 8 )
AM_RANGE(0x0000, 0x2fff) AM_ROM
AM_RANGE(0x3000, 0x3fff) AM_ROM //sound rom tested for the post check
AM_RANGE(0x3000, 0x3fff) AM_ROM //sound rom, tested for the post check
AM_RANGE(0x4000, 0x43ff) AM_RAM AM_SHARE("nvram") //backup ram
AM_RANGE(0x5000, 0x5003) AM_DEVREADWRITE("ppi8255_0", ppi8255_r, ppi8255_w) /* I/O Ports */
AM_RANGE(0x6000, 0x6003) AM_DEVREADWRITE("ppi8255_1", ppi8255_r, ppi8255_w) /* I/O Ports */
@ -1174,6 +1180,6 @@ ROM_START( cowrace )
ROM_END
GAME( 1981, kingdrby, 0, kingdrby, kingdrby, 0, ROT0, "Tazmi", "King Derby (1981)", GAME_IMPERFECT_GRAPHICS | GAME_IMPERFECT_COLORS| GAME_IMPERFECT_SOUND )
GAME( 1986, kingdrbb, kingdrby, kingdrbb, kingdrbb, 0, ROT0, "bootleg (Casino Electronics)", "King Derby (Taiwan bootleg)", GAME_IMPERFECT_GRAPHICS | GAME_WRONG_COLORS )
GAME( 1981, kingdrby, 0, kingdrby, kingdrby, 0, ROT0, "Tazmi", "King Derby (1981)", GAME_IMPERFECT_GRAPHICS | GAME_IMPERFECT_COLORS | GAME_IMPERFECT_SOUND )
GAME( 1986, kingdrbb, kingdrby, kingdrbb, kingdrbb, 0, ROT0, "bootleg (Casino Electronics)", "King Derby (Taiwan bootleg)", GAME_IMPERFECT_GRAPHICS | GAME_IMPERFECT_COLORS )
GAME( 2000, cowrace, kingdrby, cowrace, kingdrbb, 0, ROT0, "bootleg", "Cow Race (1986 King Derby hack)", GAME_NOT_WORKING | GAME_WRONG_COLORS )