diff options
Diffstat (limited to 'src/mame/video/eprom.c')
-rw-r--r-- | src/mame/video/eprom.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/mame/video/eprom.c b/src/mame/video/eprom.c index 9e490918765..4a5d96cfc2c 100644 --- a/src/mame/video/eprom.c +++ b/src/mame/video/eprom.c @@ -37,6 +37,16 @@ static TILE_GET_INFO( get_playfield_tile_info ) } +static TILE_GET_INFO( guts_get_playfield_tile_info ) +{ + UINT16 data1 = atarigen_playfield[tile_index]; + UINT16 data2 = atarigen_playfield_upper[tile_index] >> 8; + int code = data1 & 0x7fff; + int color = 0x10 + (data2 & 0x0f); + SET_TILE_INFO(2, code, color, (data1 >> 15) & 1); +} + + /************************************* * @@ -95,6 +105,57 @@ VIDEO_START( eprom ) } +VIDEO_START( guts ) +{ + static const struct atarimo_desc modesc = + { + 0, /* index to which gfx system */ + 1, /* number of motion object banks */ + 1, /* are the entries linked? */ + 0, /* are the entries split? */ + 0, /* render in reverse order? */ + 0, /* render in swapped X/Y order? */ + 0, /* does the neighbor bit affect the next object? */ + 8, /* pixels per SLIP entry (0 for no-slip) */ + 0, /* pixel offset for SLIPs */ + 0, /* maximum number of links to visit/scanline (0=all) */ + + 0x100, /* base palette entry */ + 0x100, /* maximum number of colors */ + 0, /* transparent pen index */ + + {{ 0x03ff,0,0,0 }}, /* mask for the link */ + {{ 0 }}, /* mask for the graphics bank */ + {{ 0,0x7fff,0,0 }}, /* mask for the code index */ + {{ 0 }}, /* mask for the upper code index */ + {{ 0,0,0x000f,0 }}, /* mask for the color */ + {{ 0,0,0xff80,0 }}, /* mask for the X position */ + {{ 0,0,0,0xff80 }}, /* mask for the Y position */ + {{ 0,0,0,0x0070 }}, /* mask for the width, in tiles*/ + {{ 0,0,0,0x000f }}, /* mask for the height, in tiles */ + {{ 0,0x8000,0,0 }}, /* mask for the horizontal flip */ + {{ 0 }}, /* mask for the vertical flip */ + {{ 0,0,0x0070,0 }}, /* mask for the priority */ + {{ 0 }}, /* mask for the neighbor */ + {{ 0 }}, /* mask for absolute coordinates */ + + {{ 0 }}, /* mask for the special value */ + 0, /* resulting value to indicate "special" */ + 0 /* callback routine for special entries */ + }; + + /* initialize the playfield */ + atarigen_playfield_tilemap = tilemap_create(guts_get_playfield_tile_info, tilemap_scan_cols, TILEMAP_TYPE_PEN, 8,8, 64,64); + + /* initialize the motion objects */ + atarimo_init(machine, 0, &modesc); + + /* initialize the alphanumerics */ + atarigen_alpha_tilemap = tilemap_create(get_alpha_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,8, 64,32); + tilemap_set_transparent_pen(atarigen_alpha_tilemap, 0); +} + + /************************************* * @@ -268,3 +329,69 @@ VIDEO_UPDATE( eprom ) } return 0; } + + +VIDEO_UPDATE( guts ) +{ + struct atarimo_rect_list rectlist; + mame_bitmap *mobitmap; + int x, y, r; + + /* draw the playfield */ + tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 0, 0); + + /* draw and merge the MO */ + mobitmap = atarimo_render(machine, 0, cliprect, &rectlist); + for (r = 0; r < rectlist.numrects; r++, rectlist.rect++) + for (y = rectlist.rect->min_y; y <= rectlist.rect->max_y; y++) + { + UINT16 *mo = (UINT16 *)mobitmap->base + mobitmap->rowpixels * y; + UINT16 *pf = (UINT16 *)bitmap->base + bitmap->rowpixels * y; + for (x = rectlist.rect->min_x; x <= rectlist.rect->max_x; x++) + if (mo[x]) + { + int mopriority = (mo[x] >> ATARIMO_PRIORITY_SHIFT) & 7; + int pfpriority = (pf[x] >> 5) & 3; + + /* upper bit of MO priority signals special rendering and doesn't draw anything */ + if (mopriority & 4) + continue; + + /* check the priority */ + if (!(pf[x] & 8) || mopriority >= pfpriority) + pf[x] = mo[x] & ATARIMO_DATA_MASK; + + /* don't erase yet -- we need to make another pass later */ + } + } + + /* add the alpha on top */ + tilemap_draw(bitmap, cliprect, atarigen_alpha_tilemap, 0, 0); + + /* now go back and process the upper bit of MO priority */ + rectlist.rect -= rectlist.numrects; + for (r = 0; r < rectlist.numrects; r++, rectlist.rect++) + for (y = rectlist.rect->min_y; y <= rectlist.rect->max_y; y++) + { + UINT16 *mo = (UINT16 *)mobitmap->base + mobitmap->rowpixels * y; + UINT16 *pf = (UINT16 *)bitmap->base + bitmap->rowpixels * y; + for (x = rectlist.rect->min_x; x <= rectlist.rect->max_x; x++) + if (mo[x]) + { + int mopriority = mo[x] >> ATARIMO_PRIORITY_SHIFT; + + /* upper bit of MO priority might mean palette kludges */ + if (mopriority & 4) + { + /* if bit 2 is set, start setting high palette bits */ + if (mo[x] & 2) + thunderj_mark_high_palette(bitmap, pf, mo, x, y); + } + + /* erase behind ourselves */ + mo[x] = 0; + } + } + + return 0; +} |