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- Centered crosshair

Browse Source 
- Uses real game orientation
- Minor clean-ups
This commit is contained in:
Zsolt Vasvari 2008-02-07 07:37:26 +00:00
parent 56f0f0671e
commit 24848d7222
3 changed files with 115 additions and 132 deletions
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8
src/mame/drivers/stactics.c
View File

@ -218,18 +218,18 @@ ROM_START( stactics )
ROM_LOAD( "epr-222y", 0x2000, 0x0800, CRC(24dd2bcc) SHA1(f77c59beccc1a77e3bfc2928ff532d6e221ff42d) ) ROM_LOAD( "epr-222y", 0x2000, 0x0800, CRC(24dd2bcc) SHA1(f77c59beccc1a77e3bfc2928ff532d6e221ff42d) )
ROM_LOAD( "epr-223x", 0x2800, 0x0800, CRC(7fef0940) SHA1(5b2af55f75ef0130f9202b6a916a96dbd601fcfa) ) ROM_LOAD( "epr-223x", 0x2800, 0x0800, CRC(7fef0940) SHA1(5b2af55f75ef0130f9202b6a916a96dbd601fcfa) )
ROM_REGION( 0x1060, REGION_PROMS, 0 ) ROM_REGION( 0x1040, REGION_PROMS, 0 )
ROM_LOAD( "pr54", 0x0000, 0x0800, CRC(9640bd6e) SHA1(dd12952a6591f2056ac1b5688dca0a3a2ef69f2d) ) /* color/priority PROM */ ROM_LOAD( "pr54", 0x0000, 0x0800, CRC(9640bd6e) SHA1(dd12952a6591f2056ac1b5688dca0a3a2ef69f2d) ) /* color/priority PROM */
ROM_LOAD( "pr55", 0x0800, 0x0800, CRC(f162673b) SHA1(83743780b6c1f8014df24fa0650000b7cb137d92) ) /* timing PROM (unused) */ ROM_LOAD( "pr55", 0x0800, 0x0800, CRC(f162673b) SHA1(83743780b6c1f8014df24fa0650000b7cb137d92) ) /* timing PROM (unused) */
ROM_LOAD( "pr65", 0x1000, 0x0020, CRC(a1506b9d) SHA1(037c3db2ea40eca459e8acba9d1506dd28d72d10) ) /* timing PROM (unused) */ ROM_LOAD( "pr65", 0x1000, 0x0020, CRC(a1506b9d) SHA1(037c3db2ea40eca459e8acba9d1506dd28d72d10) ) /* timing PROM (unused) */
ROM_LOAD( "pr66", 0x1020, 0x0020, CRC(78dcf300) SHA1(37034cc0cfa4a8ec47937a2a34b77ec56b387a9b) ) /* timing PROM (unused) */ ROM_LOAD( "pr66", 0x1020, 0x0020, CRC(78dcf300) SHA1(37034cc0cfa4a8ec47937a2a34b77ec56b387a9b) ) /* timing PROM (unused) */
ROM_LOAD( "pr67", 0x1040, 0x0020, CRC(b27874e7) SHA1(c24bc78c4b2ae01aaed5d994ce2e7c5e0f2eece8) ) /* LED timing ROM (unused) */
ROM_REGION( 0x0800, REGION_USER1, 0 ) ROM_REGION( 0x0820, REGION_USER1, 0 )
ROM_LOAD( "epr-217", 0x0000, 0x0800, CRC(38259f5f) SHA1(1f4182ffc2d78fca22711526bb2ae2cfe040173c) ) /* LED fire beam data */ ROM_LOAD( "epr-217", 0x0000, 0x0800, CRC(38259f5f) SHA1(1f4182ffc2d78fca22711526bb2ae2cfe040173c) ) /* LED fire beam data */
ROM_LOAD( "pr67", 0x0800, 0x0020, CRC(b27874e7) SHA1(c24bc78c4b2ae01aaed5d994ce2e7c5e0f2eece8) ) /* LED timing ROM (unused) */
ROM_END ROM_END
GAME( 1981, stactics, 0, stactics, stactics, 0, ROT0, "Sega", "Space Tactics", GAME_NO_SOUND ) GAME( 1981, stactics, 0, stactics, stactics, 0, ORIENTATION_FLIP_X, "Sega", "Space Tactics", GAME_NO_SOUND )

2
src/mame/machine/stactics.c
View File

@ -48,7 +48,7 @@ READ8_HANDLER( stactics_vert_pos_r )
READ8_HANDLER( stactics_horiz_pos_r ) READ8_HANDLER( stactics_horiz_pos_r )
{ {
return stactics_horiz_pos+0x80; return stactics_horiz_pos+0x88;
} }
INTERRUPT_GEN( stactics_interrupt ) INTERRUPT_GEN( stactics_interrupt )

237
src/mame/video/stactics.c
View File

@ -82,13 +82,17 @@ static UINT8 y_scroll_d;
static UINT8 y_scroll_e; static UINT8 y_scroll_e;
static UINT8 y_scroll_f; static UINT8 y_scroll_f;
static int states_per_frame; static UINT16 beam_state;
static UINT16 old_beam_state;
static UINT16 beam_states_per_frame;
/* these come via observation of the color PROM */ /* these come via observation of the color PROM */
#define GREEN_PEN (0x12) #define BLACK_PEN (pens[0x00])
#define RED_PEN (0x16) #define GREEN_PEN (pens[0x12])
#define YELLOW_PEN (0x1a) #define RED_PEN (pens[0x16])
#define YELLOW_PEN (pens[0x1a])
@ -133,9 +137,6 @@ static const UINT8 char_gfx[32*8] =
}; };
static int firebeam_state;
static int old_firebeam_state;
PALETTE_INIT( stactics ) PALETTE_INIT( stactics )
{ {
int i; int i;
@ -175,8 +176,8 @@ VIDEO_START( stactics )
stactics_vblank_count = 0; stactics_vblank_count = 0;
stactics_shot_standby = 1; stactics_shot_standby = 1;
stactics_shot_arrive = 0; stactics_shot_arrive = 0;
firebeam_state = 0; beam_state = 0;
old_firebeam_state = 0; old_beam_state = 0;
stactics_vblank_count = 0; stactics_vblank_count = 0;
stactics_vert_pos = 0; stactics_vert_pos = 0;
@ -227,7 +228,7 @@ WRITE8_HANDLER( stactics_speed_latch_w )
num_rising_edges++; num_rising_edges++;
} }
states_per_frame = num_rising_edges*19/8; beam_states_per_frame = num_rising_edges*19/8;
} }
WRITE8_HANDLER( stactics_shot_trigger_w ) WRITE8_HANDLER( stactics_shot_trigger_w )
@ -242,6 +243,36 @@ WRITE8_HANDLER( stactics_shot_flag_clear_w )
static void update_beam(void)
{
/* An LED fire beam! */
/* (There were 120 green LEDS mounted in the cabinet in the game, */
/* and one red one, for the sight) */
/* First, update the firebeam state */
old_beam_state = beam_state;
if (stactics_shot_standby == 0)
beam_state = beam_state + beam_states_per_frame;
/* These are thresholds for the two shots from the LED fire ROM */
/* (Note: There are two more for sound triggers, */
/* whenever that gets implemented) */
if ((old_beam_state < 0x8b) & (beam_state >= 0x8b))
stactics_shot_arrive = 1;
if ((old_beam_state < 0xca) & (beam_state >= 0xca))
stactics_shot_arrive = 1;
if (beam_state >= 0x100)
{
beam_state = 0;
stactics_shot_standby = 1;
}
}
INLINE int get_pixel_on_plane(UINT8 *videoram, UINT8 y, UINT8 x, UINT8 y_scroll) INLINE int get_pixel_on_plane(UINT8 *videoram, UINT8 y, UINT8 x, UINT8 y_scroll)
{ {
UINT8 code; UINT8 code;
@ -261,40 +292,12 @@ INLINE int get_pixel_on_plane(UINT8 *videoram, UINT8 y, UINT8 x, UINT8 y_scroll)
} }
static void update_beam(void) static void draw_background(mame_bitmap *bitmap, const rectangle *cliprect, const pen_t *pens)
{
/* An LED fire beam! */
/* (There were 120 green LEDS mounted in the cabinet in the game, */
/* and one red one, for the sight) */
/* First, update the firebeam state */
old_firebeam_state = firebeam_state;
if (stactics_shot_standby == 0)
firebeam_state = firebeam_state + states_per_frame;
/* These are thresholds for the two shots from the LED fire ROM */
/* (Note: There are two more for sound triggers, */
/* whenever that gets implemented) */
if ((old_firebeam_state < 0x8b) & (firebeam_state >= 0x8b))
stactics_shot_arrive = 1;
if ((old_firebeam_state < 0xca) & (firebeam_state >= 0xca))
stactics_shot_arrive = 1;
if (firebeam_state >= 0x100)
{
firebeam_state = 0;
stactics_shot_standby = 1;
}
}
static VIDEO_UPDATE( draw_background )
{ {
int y; int y;
fillbitmap(bitmap, BLACK_PEN, cliprect);
/* for every row */ /* for every row */
for (y = 0; y < 0x100; y++) for (y = 0; y < 0x100; y++)
{ {
@ -322,17 +325,15 @@ static VIDEO_UPDATE( draw_background )
((stactics_palette[1] & 0x01) << 9); ((stactics_palette[1] & 0x01) << 9);
/* compute the effective pixel coordinate after adjusting for the /* compute the effective pixel coordinate after adjusting for the
mirror and the monitor movement */ mirror movement - this is mechanical on the real machine */
int sy = y + stactics_vert_pos; int sy = y + stactics_vert_pos;
int sx = (0xff - x) + stactics_horiz_pos; int sx = x - stactics_horiz_pos;
/* plot if visible */ /* plot if visible */
if ((sy >= 0) && (sy < 0xf0) && (sx >= 0) && (sx < 0x100)) if ((sy >= 0) && (sy < 0xf0) && (sx >= 0) && (sx < 0x100))
*BITMAP_ADDR16(bitmap, sy, sx) = machine->pens[pen]; *BITMAP_ADDR16(bitmap, sy, sx) = pens[pen];
} }
} }
return 0;
} }
@ -347,97 +348,43 @@ static void draw_character(mame_bitmap *bitmap, const rectangle *cliprect, int c
for (i = 0; i < 6; i++) for (i = 0; i < 6; i++)
if ((gfx_data << i) & 0x80) if ((gfx_data << i) & 0x80)
*BITMAP_ADDR16(bitmap, y + 248, x + i) = pen; *BITMAP_ADDR16(bitmap, y + 248, 255 - (x + i)) = pen;
} }
} }
static VIDEO_UPDATE( draw_characters ) static void update_artwork(mame_bitmap *bitmap, const rectangle *cliprect, const pen_t *pens)
{
int i;
/* score display */
draw_character(bitmap, cliprect, 0x12, 16, machine->pens[YELLOW_PEN]); /* S */
draw_character(bitmap, cliprect, 0x19, 22, machine->pens[YELLOW_PEN]); /* : */
for (i = 0x01; i < 0x07; i++)
{
int code = stactics_display_buffer[i] & 0x0f;
draw_character(bitmap, cliprect, code, 28 + ((i - 0x01) * 6), machine->pens[RED_PEN]);
}
/* credits indicator */
draw_character(bitmap, cliprect, 0x15, 80, machine->pens[YELLOW_PEN]); /* C */
draw_character(bitmap, cliprect, 0x19, 86, machine->pens[YELLOW_PEN]); /* : */
for (i = 0x07; i < 0x09; i++)
{
int code = 0x10 | (~stactics_display_buffer[i] & 0x0f);
draw_character(bitmap, cliprect, code, 92 + ((i - 0x07) * 2), machine->pens[RED_PEN]);
}
/* rounds indicator */
draw_character(bitmap, cliprect, 0x16, 144, machine->pens[YELLOW_PEN]); /* R */
draw_character(bitmap, cliprect, 0x19, 150, machine->pens[YELLOW_PEN]); /* : */
for (i = 0x09; i < 0x0c; i++)
{
int code = 0x10 | (~stactics_display_buffer[i] & 0x0f);
draw_character(bitmap, cliprect, code, 156 + ((i - 0x09) * 2), machine->pens[RED_PEN]);
}
/* barriers indicator */
draw_character(bitmap, cliprect, 0x17, 208, machine->pens[YELLOW_PEN]); /* B */
draw_character(bitmap, cliprect, 0x19, 214, machine->pens[YELLOW_PEN]); /* : */
for (i = 0x0c; i < 0x10; i++)
{
int code = 0x10 | (~stactics_display_buffer[i] & 0x0f);
draw_character(bitmap, cliprect, code, 220 + ((i - 0x0c) * 2), machine->pens[RED_PEN]);
}
return 0;
}
static VIDEO_UPDATE( draw_leds )
{ {
int i; int i;
UINT8 *beam_region = memory_region(REGION_USER1); UINT8 *beam_region = memory_region(REGION_USER1);
int x = 18; int x = 11;
int y = 170; int y = 170;
pen_t pen = machine->pens[GREEN_PEN];
/* for each LED */ /* for each LED */
for (i = 0; i < 0x40; i++) for (i = 0; i < 0x40; i++)
{ {
offs_t beam_data_offs; offs_t beam_data_offs;
UINT8 beam_data; UINT8 beam_data;
/* skip one every so often -- there are only 60 LEDs */ /* every 15th LED is not present on the real machine */
if ((i & 0x0f) == 0x0f) continue; if ((i & 0x0f) == 0x0f) continue;
beam_data_offs = ((i & 0x08) << 7) | ((i & 0x30) << 4) | firebeam_state; beam_data_offs = ((i & 0x08) << 7) | ((i & 0x30) << 4) | beam_state;
beam_data = beam_region[beam_data_offs]; beam_data = beam_region[beam_data_offs];
/* if the LED is on, draw */ /* if the LED is on, draw */
if ((beam_data >> (i & 0x07)) & 0x01) if ((beam_data >> (i & 0x07)) & 0x01)
{ {
*BITMAP_ADDR16(bitmap, y, x ) = pen; *BITMAP_ADDR16(bitmap, y, x ) = GREEN_PEN;
*BITMAP_ADDR16(bitmap, y, x + 1) = pen; *BITMAP_ADDR16(bitmap, y, x + 1) = GREEN_PEN;
*BITMAP_ADDR16(bitmap, y + 1, x ) = pen; *BITMAP_ADDR16(bitmap, y + 1, x ) = GREEN_PEN;
*BITMAP_ADDR16(bitmap, y + 1, x + 1) = pen; *BITMAP_ADDR16(bitmap, y + 1, x + 1) = GREEN_PEN;
*BITMAP_ADDR16(bitmap, y, 270 - x) = pen; *BITMAP_ADDR16(bitmap, y, 256 - x) = GREEN_PEN;
*BITMAP_ADDR16(bitmap, y, 269 - x) = pen; *BITMAP_ADDR16(bitmap, y, 255 - x) = GREEN_PEN;
*BITMAP_ADDR16(bitmap, y + 1, 270 - x) = pen; *BITMAP_ADDR16(bitmap, y + 1, 256 - x) = GREEN_PEN;
*BITMAP_ADDR16(bitmap, y + 1, 269 - x) = pen; *BITMAP_ADDR16(bitmap, y + 1, 255 - x) = GREEN_PEN;
} }
x = x + 2; x = x + 2;
@ -447,19 +394,58 @@ static VIDEO_UPDATE( draw_leds )
/* draw the sight LED, if on */ /* draw the sight LED, if on */
if (*stactics_motor_on & 0x01) if (*stactics_motor_on & 0x01)
{ {
x = 134; x = 127;
y = 112; y = 112;
pen = machine->pens[RED_PEN]; *BITMAP_ADDR16(bitmap, y, x + 1) = RED_PEN;
*BITMAP_ADDR16(bitmap, y + 1, x ) = RED_PEN;
*BITMAP_ADDR16(bitmap, y, x + 1) = pen; *BITMAP_ADDR16(bitmap, y + 1, x + 1) = RED_PEN;
*BITMAP_ADDR16(bitmap, y + 1, x ) = pen; *BITMAP_ADDR16(bitmap, y + 1, x + 2) = RED_PEN;
*BITMAP_ADDR16(bitmap, y + 1, x + 1) = pen; *BITMAP_ADDR16(bitmap, y + 2, x + 1) = RED_PEN;
*BITMAP_ADDR16(bitmap, y + 1, x + 2) = pen;
*BITMAP_ADDR16(bitmap, y + 2, x + 1) = pen;
} }
return 0; /* score display */
draw_character(bitmap, cliprect, 0x12, 16, YELLOW_PEN); /* S */
draw_character(bitmap, cliprect, 0x19, 22, YELLOW_PEN); /* : */
for (i = 0x01; i < 0x07; i++)
{
int code = stactics_display_buffer[i] & 0x0f;
draw_character(bitmap, cliprect, code, 28 + ((i - 0x01) * 6), RED_PEN);
}
/* credits indicator */
draw_character(bitmap, cliprect, 0x15, 80, YELLOW_PEN); /* C */
draw_character(bitmap, cliprect, 0x19, 86, YELLOW_PEN); /* : */
for (i = 0x07; i < 0x09; i++)
{
int code = 0x10 | (~stactics_display_buffer[i] & 0x0f);
draw_character(bitmap, cliprect, code, 92 + ((i - 0x07) * 2), RED_PEN);
}
/* rounds indicator */
draw_character(bitmap, cliprect, 0x16, 144, YELLOW_PEN); /* R */
draw_character(bitmap, cliprect, 0x19, 150, YELLOW_PEN); /* : */
for (i = 0x09; i < 0x0c; i++)
{
int code = 0x10 | (~stactics_display_buffer[i] & 0x0f);
draw_character(bitmap, cliprect, code, 156 + ((i - 0x09) * 2), RED_PEN);
}
/* barriers indicator */
draw_character(bitmap, cliprect, 0x17, 208, YELLOW_PEN); /* B */
draw_character(bitmap, cliprect, 0x19, 214, YELLOW_PEN); /* : */
for (i = 0x0c; i < 0x10; i++)
{
int code = 0x10 | (~stactics_display_buffer[i] & 0x0f);
draw_character(bitmap, cliprect, code, 220 + ((i - 0x0c) * 2), RED_PEN);
}
} }
@ -470,11 +456,8 @@ VIDEO_UPDATE( stactics )
/* update vblank counter */ /* update vblank counter */
stactics_vblank_count++; stactics_vblank_count++;
fillbitmap(bitmap, machine->pens[0], cliprect); draw_background(bitmap, cliprect, machine->pens);
update_artwork(bitmap, cliprect, machine->pens);
VIDEO_UPDATE_CALL(draw_background);
VIDEO_UPDATE_CALL(draw_leds);
VIDEO_UPDATE_CALL(draw_characters);
return 0; return 0;
} }