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Added preliminary circle drawing for Warp Speed [Mariusz Wojcieszek]

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This commit is contained in:
mariuszw1 2011-06-20 20:52:31 +00:00
parent fb2496fb2d
commit 7b6b701b5f
1 changed files with 160 additions and 61 deletions
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221
src/mame/drivers/warpsped.c
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@ -5,25 +5,24 @@ Meadows Warp Speed
Preliminary driver by Mariusz Wojcieszek
Hardware registers:
0x00 - 0x1f control register for discs generator (8 bytes each)
0x00, 0x01 disc radius (?)
0x02, 0x03 disc middle point
0x04, 0x05 disc middle point
0x06 disc colour (0-7)
0x07 unused
0x20 ?
0x21 sound (intro screens have bit 1 toggled for click effect)
0x22 ?
0x23 ?
0x24 ?
0x25 ?
0x26 ?
0x27 ?
0x00 - 0x1f control register for circles generator (8 bytes each)
0x00, 0x01 circle radius
0x02, 0x03 circle middle point
0x04, 0x05 circle middle point
0x06 circle colour (0-7)
0x07 unused
0x20 ?
0x21 sound (intro screens have bit 1 toggled for click effect)
0x22 ?
0x23 ?
0x24 ?
0x25 ?
0x26 ?
0x27 ?
Board etched...
MEADOWS 024-0084
MADE IN USA
MEADOWS 024-0084
MADE IN USA
Empty socket at .E3
Z80 processor
@ -32,43 +31,43 @@ Z80 processor
5Mhz crystal
All PROMS are SN74s474
.L18 no sticker
.L17 stickered L9, L13
L17, G17
.L15 stickered L10, L15
L18, G18
.L13 stickered L9, L13
L17, G17
.L10 stickered L10, L15
L18, G18
.L9 stickered (damaged) xxx, L13
xxx, G1y
.K1 stickered K1
.G2 no sticker K1
.E4 no sticker
.E5 stickered M16
PRO
1
.E6 stickered M16
PRO
3
.C3 can't read
.C4 stickered M16
PRO
4
.C5 stickered M16
PRO
0
.C6 stickered M16
PRO
2
.E8 stickered E8
.E10 stickered E10
.C12 stickered C12
.G17 stickered L9, L13
L17, G17
.G18 stickered L10, L15
L18, G18
.L18 no sticker
.L17 stickered L9, L13
L17, G17
.L15 stickered L10, L15
L18, G18
.L13 stickered L9, L13
L17, G17
.L10 stickered L10, L15
L18, G18
.L9 stickered (damaged) xxx, L13
xxx, G1y
.K1 stickered K1
.G2 no sticker K1
.E4 no sticker
.E5 stickered M16
PRO
1
.E6 stickered M16
PRO
3
.C3 can't read
.C4 stickered M16
PRO
4
.C5 stickered M16
PRO
0
.C6 stickered M16
PRO
2
.E8 stickered E8
.E10 stickered E10
.C12 stickered C12
.G17 stickered L9, L13
L17, G17
.G18 stickered L10, L15
L18, G18
L9, L13, L17 and G17 all read the same
L10, L15, L18 and G18 all read the same
@ -93,14 +92,12 @@ public:
static READ8_HANDLER( warpspeed_hardware_r )
{
// warpspeed_state *state = space->machine().driver_data<warpspeed_state>();
// warpspeed_state *state = space->machine().driver_data<warpspeed_state>();
switch( offset )
{
case 0: return input_port_read(space->machine(), "IN1" );
/* dipswitches? bit 6 when set causes jump to $e01 during vblank (rom missing) is this test mode? */
case 2: return 0;
case 3: return input_port_read(space->machine(), "IN0" );
case 2: return input_port_read(space->machine(), "DSW" ); case 3: return input_port_read(space->machine(), "IN0" );
}
return 0;
}
@ -146,11 +143,75 @@ static VIDEO_START( warpspeed )
tilemap_mark_all_tiles_dirty(state->m_starfield_tilemap);
}
static void draw_circle_line(bitmap_t *bitmap, int x, int y, int l, int color)
{
if (y >= 0 && y <= bitmap->height - 1)
{
UINT16* pLine = BITMAP_ADDR16(bitmap, y, 0);
int h1 = x - l;
int h2 = x + l;
if (h1 < 0)
h1 = 0;
if (h2 > bitmap->width - 1)
h2 = bitmap->width - 1;
for (x = h1; x <= h2; x++)
pLine[x] = color;
}
}
static void warpspeed_draw_circle(bitmap_t *bitmap, INT16 cx, INT16 cy, UINT16 radius, UINT8 color )
{
/* Bresenham's circle algorithm */
int x = 0;
int y = radius;
int d = 3 - 2 * radius;
while (x <= y)
{
draw_circle_line(bitmap, cx, cy - x, y, color);
draw_circle_line(bitmap, cx, cy + x, y, color);
draw_circle_line(bitmap, cx, cy - y, x, color);
draw_circle_line(bitmap, cx, cy + y, x, color);
x++;
if (d < 0)
d += 4 * x + 6;
else
d += 4 * (x - y--) + 10;
}
}
static void warpspeed_draw_circles(bitmap_t *bitmap, warpspeed_state *state)
{
for (int i = 0; i < 4; i++)
{
UINT16 radius = state->m_regs[i*8] + state->m_regs[i*8 + 1]*256;
radius = 0xffff - radius;
radius = sqrt((float)radius);
INT16 midx = state->m_regs[i*8 + 2] + state->m_regs[i*8 + 3]*256;
midx -= 0xe70;
INT16 midy = state->m_regs[i*8 + 4] + state->m_regs[i*8 + 5]*256;
midy -= 0xe70;
if ( radius == 0 || radius == 0xffff )
{
continue;
}
warpspeed_draw_circle(bitmap, midx + 128 + 16, midy + 128 + 16, radius, (state->m_regs[i*8 + 6] & 0x07) + 2);
}
}
static SCREEN_UPDATE( warpspeed )
{
warpspeed_state *state = screen->machine().driver_data<warpspeed_state>();
tilemap_draw(bitmap, cliprect, state->m_starfield_tilemap, 0, 0);
warpspeed_draw_circles(bitmap, state);
tilemap_draw(bitmap, cliprect, state->m_text_tilemap, 0, 0);
return 0;
}
@ -177,6 +238,31 @@ static INPUT_PORTS_START( warpspeed )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME( "Accelerate" )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME( "Brake" )
PORT_BIT( 0x3f, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("DSW")
PORT_DIPNAME( 0x07, 0x00, "Coin/Time" )
PORT_DIPSETTING( 0x00, "50 sec" )
PORT_DIPSETTING( 0x01, "75 sec" )
PORT_DIPSETTING( 0x02, "100 sec" )
PORT_DIPSETTING( 0x03, "125 sec" )
PORT_DIPSETTING( 0x04, "150 sec" )
PORT_DIPSETTING( 0x05, "175 sec" )
PORT_DIPSETTING( 0x06, "200 sec" )
PORT_DIPSETTING( 0x07, "225 sec" )
PORT_DIPUNKNOWN( 0x08, 0x00 )
PORT_DIPUNKNOWN( 0x10, 0x00 )
PORT_DIPNAME( 0x20, 0x00, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x20, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
PORT_DIPNAME( 0x40, 0x00, DEF_STR( Service_Mode ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x40, DEF_STR( On ) )
PORT_DIPUNUSED( 0x80, 0x00 )
INPUT_PORTS_END
static const gfx_layout warpspeed_charlayout =
@ -195,6 +281,19 @@ static GFXDECODE_START( warpspeed )
GFXDECODE_ENTRY( "gfx2", 0, warpspeed_charlayout, 0, 1 )
GFXDECODE_END
static PALETTE_INIT( warpspeed )
{
// tilemaps
palette_set_color(machine,0,RGB_BLACK); /* black */
palette_set_color(machine,1,RGB_WHITE); /* white */
// circles
for ( int i = 0; i < 8; i++ )
{
palette_set_color_rgb(machine, 2 + i, 0xff*BIT(i,0), 0xff*BIT(i,1), 0xff*BIT(i,2));
}
}
static MACHINE_CONFIG_START( warpspeed, warpspeed_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", Z80, XTAL_5MHz/2)
@ -207,7 +306,7 @@ static MACHINE_CONFIG_START( warpspeed, warpspeed_state )
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
MCFG_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MCFG_SCREEN_SIZE((32)*8, (32)*8)
MCFG_SCREEN_VISIBLE_AREA(4*8, 32*8-1, 8*8, 32*8-1)
@ -215,8 +314,8 @@ static MACHINE_CONFIG_START( warpspeed, warpspeed_state )
MCFG_SCREEN_UPDATE(warpspeed)
MCFG_GFXDECODE(warpspeed)
MCFG_PALETTE_LENGTH(2)
MCFG_PALETTE_INIT(black_and_white)
MCFG_PALETTE_LENGTH(2+8)
MCFG_PALETTE_INIT(warpspeed)
MACHINE_CONFIG_END