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stuntair - improved sprites

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This commit is contained in:
David Haywood 2013-05-18 13:57:09 +00:00
parent 5d1ce4c907
commit 34871a13e2
1 changed files with 62 additions and 14 deletions
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76
src/mame/drivers/stuntair.c
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@ -87,6 +87,9 @@ public:
m_sprram(*this, "sprram")
{
m_bg_xscroll = 0;
m_nmienable = 0;
m_spritebank0 = 0;
m_spritebank1 = 0;
}
required_device<cpu_device> m_maincpu;
@ -100,6 +103,9 @@ public:
tilemap_t *m_bg_tilemap;
UINT8 m_bg_xscroll;
UINT8 m_nmienable;
UINT8 m_spritebank0;
UINT8 m_spritebank1;
DECLARE_WRITE8_MEMBER(stuntair_fgram_w);
TILE_GET_INFO_MEMBER(get_stuntair_fg_tile_info);
@ -110,11 +116,39 @@ public:
DECLARE_WRITE8_MEMBER(stuntair_bgxscroll_w);
DECLARE_READ8_MEMBER(stuntair_unk_r)
DECLARE_WRITE8_MEMBER(stuntair_unk_w)
{
return 0xff;
printf("unk %02x\n", data);
}
DECLARE_WRITE8_MEMBER(stuntair_f001_w)
{
m_nmienable = data&0x01; // guess
if (data&~0x01) printf("stuntair_f001_w %02x\n", data);
}
DECLARE_WRITE8_MEMBER(stuntair_spritebank0_w)
{
m_spritebank0 = data&0x01;
if (data&~0x01) printf("stuntair_spritebank0_w %02x\n", data);
}
DECLARE_WRITE8_MEMBER(stuntair_spritebank1_w)
{
m_spritebank1 = data&0x01;
if (data&~0x01) printf("stuntair_spritebank1_w %02x\n", data);
}
DECLARE_WRITE8_MEMBER(stuntair_coin_w)
{
// lower 2 bits are coin counters
if (data&~0x3) printf("stuntair_coin_w %02x\n", data);
}
INTERRUPT_GEN_MEMBER(stuntair_irq);
@ -132,15 +166,15 @@ static ADDRESS_MAP_START( stuntair_map, AS_PROGRAM, 8, stuntair_state )
AM_RANGE(0xd000, 0xd3ff) AM_RAM_WRITE(stuntair_bgram_w) AM_SHARE("bgram") // bg
AM_RANGE(0xd800, 0xdfff) AM_RAM AM_SHARE("sprram")
AM_RANGE(0xe000, 0xe000) AM_READ_PORT("DSWB")
AM_RANGE(0xe800, 0xe800 )AM_READ_PORT("DSWA") AM_WRITE(stuntair_bgxscroll_w)
AM_RANGE(0xe000, 0xe000) AM_READ_PORT("DSWB") AM_WRITE(stuntair_coin_w)
AM_RANGE(0xe800, 0xe800) AM_READ_PORT("DSWA") AM_WRITE(stuntair_bgxscroll_w)
AM_RANGE(0xf000, 0xf000) AM_READ_PORT("IN2")
AM_RANGE(0xf001, 0xf001) AM_WRITENOP // might be nmi enable
AM_RANGE(0xf001, 0xf001) AM_WRITE(stuntair_f001_w) // might be nmi enable
AM_RANGE(0xf002, 0xf002) AM_READ_PORT("IN3")
AM_RANGE(0xf003, 0xf003) AM_READ_PORT("IN4")
AM_RANGE(0xf003, 0xf003) AM_READ_PORT("IN4") AM_WRITE(stuntair_spritebank1_w)
// AM_RANGE(0xf004, 0xf004) AM_WRITENOP
// AM_RANGE(0xf005, 0xf005) AM_WRITENOP
AM_RANGE(0xf005, 0xf005) AM_WRITE(stuntair_spritebank0_w)
// AM_RANGE(0xf006, 0xf006) AM_WRITENOP
// AM_RANGE(0xf007, 0xf007) AM_WRITENOP
@ -388,24 +422,38 @@ UINT32 stuntair_state::screen_update_stuntair(screen_device &screen, bitmap_ind1
m_bg_tilemap->draw(bitmap, cliprect, 0, 0);
m_fg_tilemap->draw(bitmap, cliprect, 0, TILEMAP_PIXEL_LAYER0);
m_fg_tilemap->draw(bitmap, cliprect, 0, TILEMAP_PIXEL_LAYER1|TILEMAP_DRAW_OPAQUE);
gfx_element *gfx = machine().gfx[2];
for (int i=0;i<0x200;i+=8)
/* there seem to be 2 spritelists with something else (fixed values) between them.. is that significant? */
for (int i=0;i<0x400/16;i++)
{
int x = m_sprram[i+5];
int y = 240-m_sprram[i+0];
drawgfx_transpen(bitmap,cliprect,gfx,2,0,0,0,x,y,0);
int x = m_sprram[(i*16)+5];
int y = 240-m_sprram[(i*16)+0];
int tile;
tile = m_sprram[(i*16)+1] & 0x3f;
if (m_spritebank1) tile |= 0x40;
if (m_spritebank0) tile |= 0x80;
int flipx = (m_sprram[(i*16)+1] & 0x80)>>7; // used
int flipy = (m_sprram[(i*16)+1] & 0x40)>>6; // guessed
drawgfx_transpen(bitmap,cliprect,gfx,tile,0,flipx,flipy,x,y,0);
}
m_fg_tilemap->draw(bitmap, cliprect, 0, TILEMAP_PIXEL_LAYER1|TILEMAP_DRAW_OPAQUE);
return 0;
}
INTERRUPT_GEN_MEMBER(stuntair_state::stuntair_irq)
{
// if(m_nmi_enable)
if(m_nmienable)
m_maincpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
}