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https://github.com/holub/mame
synced 2025-05-09 07:41:50 +03:00
Fixed graphics decode issues and improved palette generation in Dodge Man and Battle Cross.
This commit is contained in:
Tomasz Slanina
parent
269a7abd65
commit
9899bb0eaa
@ -19,6 +19,40 @@
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- Setting the flipscreen dip to ON also hides the copyright message (?)
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Notes from Tomasz Slanina:
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Tile decoding:
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Each 8x8 BG tile is defined by:
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- 1 bit 8x8 mask (one tile - 8 consecutive bytes - user2 region)
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- 4+4 bits of color ( one tile - 8 consecutive bytes - user1 region)
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- bit 3 of color = brightness ?
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Single mask byte defines one row of tile pixels (FG or BG)
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Single color byte defines color of FG (4 bits) and color of BG (4 bits)
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of high (odd address in user1) or low (even address in user1)
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nibbles of two tile pixels rows.
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Here's an example (single tile):
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user2 user1 colors
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----------------------------
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00011100 0x32 33321144
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00111100 0x41 33221144
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00111100 0x32 33227744
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00011000 0x47 33327444
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00011000 0x56 55566555
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00011000 0x56 55566555
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00011000 0x84 88844777
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00011000 0x74 88844777
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TO DO :
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- missing starfield
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@ -26,7 +60,10 @@
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- game speed, its seems to be controlled by the IRQ's, how fast should it
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be? firing seems frustratingly inconsistant (better with PORT_IMPULSE)
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- background tile colors, not understood well
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- BG tilemap palette bits (in most cases paltte 0 is used,
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only highlights ( battlex logo, hiscore table) uses different palettes(?).
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Current implementation gives different highlight colors than on real
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hardware (i.e. battlex logo should have yellow highights)
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****************************************************************************
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@ -201,12 +238,12 @@ INPUT_PORTS_END
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static const gfx_layout battlex_charlayout =
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{
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8,8,
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RGN_FRAC(1,3),
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3,
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{ RGN_FRAC(0,3), RGN_FRAC(1,3), RGN_FRAC(2,3) },
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{ 7,6,5,4,3,2,1,0 },
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{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
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8*8
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RGN_FRAC(1,1),
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4,
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{ 0,1,2,3 },
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{ 0, 4, 8, 12, 16, 20, 24, 28 },
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{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
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8*8*4
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};
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static const gfx_layout battlex_spritelayout =
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@ -223,7 +260,7 @@ static const gfx_layout battlex_spritelayout =
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};
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static GFXDECODE_START( battlex )
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GFXDECODE_ENTRY( "gfx1", 0, battlex_charlayout, 0, 8 )
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GFXDECODE_ENTRY( "gfx1", 0, battlex_charlayout, 64, 8 )
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GFXDECODE_ENTRY( "gfx2", 0, battlex_spritelayout, 0, 8 )
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GFXDECODE_END
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@ -270,7 +307,7 @@ static MACHINE_CONFIG_START( battlex, battlex_state )
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MCFG_SCREEN_PALETTE("palette")
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MCFG_GFXDECODE_ADD("gfxdecode", "palette", battlex)
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MCFG_PALETTE_ADD("palette", 64)
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MCFG_PALETTE_ADD("palette", 64 + 128)
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/* sound hardware */
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MCFG_SPEAKER_STANDARD_MONO("mono")
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@ -289,6 +326,7 @@ static MACHINE_CONFIG_DERIVED( dodgeman, battlex )
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.40)
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MACHINE_CONFIG_END
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/*************************************
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*
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* ROM definition
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@ -304,7 +342,7 @@ ROM_START( battlex )
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ROM_LOAD( "p-rom5.2", 0x4000, 0x1000, CRC(ceb63d38) SHA1(92cab905d009c59115f52172ba7d01c8ff8991d7) )
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ROM_LOAD( "p-rom6.1", 0x5000, 0x1000, CRC(6923f601) SHA1(e6c33cbd8d8679299d7b2c568d56f96ed3073971) )
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ROM_REGION( 0x3000, "gfx1", ROMREGION_ERASE00 ) // filled in later
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ROM_REGION( 0x4000, "gfx1", ROMREGION_ERASE00 ) // filled in later
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ROM_REGION( 0x3000, "gfx2", 0 )
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ROM_LOAD( "1a_f.6f", 0x0000, 0x1000, CRC(2b69287a) SHA1(30c0edaec44118b95ec390bd41c1bd49a2802451) )
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@ -327,7 +365,7 @@ ROM_START( dodgeman )
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ROM_LOAD( "dg4.2f", 0x4000, 0x001000, CRC(14169361) SHA1(86d3cd1fa0aa4f21029daea2eba99bdaa34372e8) )
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ROM_LOAD( "dg5.1f", 0x5000, 0x001000, CRC(8f83ae2f) SHA1(daad41b61ba3d55531021d444bbe4acfc275cfc9) )
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ROM_REGION( 0x6000, "gfx1", ROMREGION_ERASE00 ) // filled in later
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ROM_REGION( 0x8000, "gfx1", ROMREGION_ERASE00 ) // filled in later
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ROM_REGION( 0x6000, "gfx2", ROMREGION_ERASE00 )
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ROM_LOAD( "f.6f", 0x0000, 0x002000, CRC(dfaaf4c8) SHA1(1e09f1d72e7e5e6782d73ae60bca7982fc04df0e) )
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@ -353,33 +391,38 @@ DRIVER_INIT_MEMBER(battlex_state,battlex)
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uint8_t *colormask = memregion("user1")->base();
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uint8_t *gfxdata = memregion("user2")->base();
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uint8_t *dest = memregion("gfx1")->base();
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int tile_size = memregion("gfx1")->bytes() / 24;
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int tile_shift = (tile_size / 512) + 11;
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int tile, line, bit;
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int tile_size = memregion("gfx1")->bytes() / 32;
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int tile, line, bit;
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int offset = 0;
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/* convert gfx data from 1bpp + color block mask to straight 3bpp */
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for (tile = 0; tile < tile_size; tile++)
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{
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for (line = 0; line < 8; line ++)
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{
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for (bit = 0; bit < 8 ; bit ++)
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{
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int plane;
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int color = colormask[tile << 3 | line];
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int data = gfxdata[tile << 3 | line] >> bit & 1;
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if (!data) color >>= 4;
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int color = colormask[(tile << 3 )| ((line&0x6) + (bit>3?1:0)) ];
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int data = (gfxdata[(tile << 3 )| line] >> bit) & 1;
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for (plane = 2; plane >= 0; plane--)
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{
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dest[tile << 3 | line | (plane << tile_shift)] |= (color & 1) << bit;
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color >>= 1;
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if(!data){
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color>>=4;
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}
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color&=0x0f;
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if(offset&1){
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dest[ offset>>1 ] |= color;
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} else {
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dest[ offset>>1 ] = color<<4;
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}
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++offset;
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}
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}
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}
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}
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/*************************************
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*
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* Game driver
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@ -387,4 +430,4 @@ DRIVER_INIT_MEMBER(battlex_state,battlex)
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*************************************/
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GAME( 1982, battlex, 0, battlex, battlex, battlex_state, battlex, ROT180, "Omori Electric Co., Ltd.", "Battle Cross", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_COLORS | MACHINE_SUPPORTS_SAVE | MACHINE_NO_COCKTAIL )
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GAME( 1983, dodgeman, 0, dodgeman, dodgeman, battlex_state, battlex, ROT180, "Omori Electric Co., Ltd.", "Dodge Man", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_COLORS | MACHINE_SUPPORTS_SAVE | MACHINE_NO_COCKTAIL )
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GAME( 1983, dodgeman, 0, dodgeman, dodgeman, battlex_state, battlex, ROT180, "Omori Electric Co., Ltd.", "Dodge Man", MACHINE_IMPERFECT_COLORS | MACHINE_SUPPORTS_SAVE | MACHINE_NO_COCKTAIL )
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@ -12,7 +12,13 @@
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WRITE8_MEMBER(battlex_state::battlex_palette_w)
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{
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int palette_num = offset / 8;
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int color_num = offset & 7;
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m_palette->set_pen_color(offset, pal1bit(data >> 0), pal1bit(data >> 2), pal1bit(data >> 1));
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/* set darker colors */
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m_palette->set_pen_color(64+palette_num*16+color_num, pal1bit(data >> 0), pal1bit(data >> 2), pal1bit(data >> 1));
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m_palette->set_pen_color(64+palette_num*16+color_num+8, pal2bit((data >> 0)&1), pal2bit((data >> 2)&1), pal2bit( (data >> 1) &1));
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}
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WRITE8_MEMBER(battlex_state::battlex_scroll_x_lsb_w)
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@ -83,7 +89,7 @@ void battlex_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprec
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{
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int sx = (source[0] & 0x7f) * 2 - (source[0] & 0x80) * 2;
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int sy = source[3];
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int tile = source[2] & 0x7f;
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int tile = source[2] ; /* dodgeman has 0x100 sprites */
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int color = source[1] & 0x07; /* bits 3,4,5 also used during explosions */
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int flipy = source[1] & 0x80;
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int flipx = source[1] & 0x40;
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@ -102,7 +108,6 @@ void battlex_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprec
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}
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uint32_t battlex_state::screen_update_battlex(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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if (!flip_screen())
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