diff options
Diffstat (limited to 'src/mame/video/toobin.c')
-rw-r--r-- | src/mame/video/toobin.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/src/mame/video/toobin.c b/src/mame/video/toobin.c new file mode 100644 index 00000000000..78a16f4646c --- /dev/null +++ b/src/mame/video/toobin.c @@ -0,0 +1,270 @@ +/*************************************************************************** + + Atari Toobin' hardware + +****************************************************************************/ + +#include "driver.h" +#include "machine/atarigen.h" +#include "toobin.h" + + + +/************************************* + * + * Globals we own + * + *************************************/ + +static double brightness; + + + +/************************************* + * + * Tilemap callbacks + * + *************************************/ + +static TILE_GET_INFO( get_alpha_tile_info ) +{ + UINT16 data = atarigen_alpha[tile_index]; + int code = data & 0x3ff; + int color = (data >> 12) & 0x0f; + SET_TILE_INFO(2, code, color, (data >> 10) & 1); +} + + +static TILE_GET_INFO( get_playfield_tile_info ) +{ + UINT16 data1 = atarigen_playfield[tile_index * 2]; + UINT16 data2 = atarigen_playfield[tile_index * 2 + 1]; + int code = data2 & 0x3fff; + int color = data1 & 0x0f; + SET_TILE_INFO(0, code, color, TILE_FLIPYX(data2 >> 14)); + tileinfo->category = (data1 >> 4) & 3; +} + + + +/************************************* + * + * Video system start + * + *************************************/ + +VIDEO_START( toobin ) +{ + static const struct atarimo_desc modesc = + { + 1, /* 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? */ + 1, /* render in swapped X/Y order? */ + 0, /* does the neighbor bit affect the next object? */ + 1024, /* 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 */ + + {{ 0,0,0x00ff,0 }}, /* mask for the link */ + {{ 0 }}, /* mask for the graphics bank */ + {{ 0,0x3fff,0,0 }}, /* mask for the code index */ + {{ 0 }}, /* mask for the upper code index */ + {{ 0,0,0,0x000f }}, /* mask for the color */ + {{ 0,0,0,0xffc0 }}, /* mask for the X position */ + {{ 0x7fc0,0,0,0 }}, /* mask for the Y position */ + {{ 0x0007,0,0,0 }}, /* mask for the width, in tiles*/ + {{ 0x0038,0,0,0 }}, /* mask for the height, in tiles */ + {{ 0,0x4000,0,0 }}, /* mask for the horizontal flip */ + {{ 0,0x8000,0,0 }}, /* mask for the vertical flip */ + {{ 0 }}, /* mask for the priority */ + {{ 0 }}, /* mask for the neighbor */ + {{ 0x8000,0,0,0 }}, /* 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(get_playfield_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,8, 128,64); + + /* 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, 64,48); + tilemap_set_transparent_pen(atarigen_alpha_tilemap, 0); +} + + + +/************************************* + * + * Palette RAM write handler + * + *************************************/ + +WRITE16_HANDLER( toobin_paletteram_w ) +{ + int newword; + + COMBINE_DATA(&paletteram16[offset]); + newword = paletteram16[offset]; + + { + int red = (((newword >> 10) & 31) * 224) >> 5; + int green = (((newword >> 5) & 31) * 224) >> 5; + int blue = (((newword ) & 31) * 224) >> 5; + + if (red) red += 38; + if (green) green += 38; + if (blue) blue += 38; + + palette_set_color(Machine, offset & 0x3ff, MAKE_RGB(red, green, blue)); + if (!(newword & 0x8000)) + palette_set_brightness(Machine, offset & 0x3ff, brightness); + else + palette_set_brightness(Machine, offset & 0x3ff, 1.0); + } +} + + +WRITE16_HANDLER( toobin_intensity_w ) +{ + int i; + + if (ACCESSING_LSB) + { + brightness = (double)(~data & 0x1f) / 31.0; + + for (i = 0; i < 0x400; i++) + if (!(paletteram16[i] & 0x8000)) + palette_set_brightness(Machine, i, brightness); + } +} + + + +/************************************* + * + * X/Y scroll handlers + * + *************************************/ + +WRITE16_HANDLER( toobin_xscroll_w ) +{ + UINT16 oldscroll = *atarigen_xscroll; + UINT16 newscroll = oldscroll; + COMBINE_DATA(&newscroll); + + /* if anything has changed, force a partial update */ + if (newscroll != oldscroll) + video_screen_update_partial(0, video_screen_get_vpos(0)); + + /* update the playfield scrolling - hscroll is clocked on the following scanline */ + tilemap_set_scrollx(atarigen_playfield_tilemap, 0, newscroll >> 6); + atarimo_set_xscroll(0, newscroll >> 6); + + /* update the data */ + *atarigen_xscroll = newscroll; +} + + +WRITE16_HANDLER( toobin_yscroll_w ) +{ + UINT16 oldscroll = *atarigen_yscroll; + UINT16 newscroll = oldscroll; + COMBINE_DATA(&newscroll); + + /* if anything has changed, force a partial update */ + if (newscroll != oldscroll) + video_screen_update_partial(0, video_screen_get_vpos(0)); + + /* if bit 4 is zero, the scroll value is clocked in right away */ + tilemap_set_scrolly(atarigen_playfield_tilemap, 0, newscroll >> 6); + atarimo_set_yscroll(0, (newscroll >> 6) & 0x1ff); + + /* update the data */ + *atarigen_yscroll = newscroll; +} + + + +/************************************* + * + * X/Y scroll handlers + * + *************************************/ + +WRITE16_HANDLER( toobin_slip_w ) +{ + int oldslip = atarimo_0_slipram[offset]; + int newslip = oldslip; + COMBINE_DATA(&newslip); + + /* if the SLIP is changing, force a partial update first */ + if (oldslip != newslip) + video_screen_update_partial(0, video_screen_get_vpos(0)); + + /* update the data */ + atarimo_0_slipram_w(offset, data, mem_mask); +} + + + +/************************************* + * + * Main refresh + * + *************************************/ + +VIDEO_UPDATE( toobin ) +{ + struct atarimo_rect_list rectlist; + mame_bitmap *mobitmap; + int x, y, r; + + /* draw the playfield */ + fillbitmap(priority_bitmap, 0, cliprect); + tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 0, 0); + tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 1, 1); + tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 2, 2); + tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 3, 3); + + /* 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; + UINT8 *pri = (UINT8 *)priority_bitmap->base + priority_bitmap->rowpixels * y; + for (x = rectlist.rect->min_x; x <= rectlist.rect->max_x; x++) + if (mo[x]) + { + /* not verified: logic is all controlled in a PAL + + factors: LBPRI1-0, LBPIX3, ANPIX1-0, PFPIX3, PFPRI1-0, + (~LBPIX3 & ~LBPIX2 & ~LBPIX1 & ~LBPIX0) + */ + + /* only draw if not high priority PF */ + if (!pri[x] || !(pf[x] & 8)) + pf[x] = mo[x]; + + /* erase behind ourselves */ + mo[x] = 0; + } + } + + /* add the alpha on top */ + tilemap_draw(bitmap, cliprect, atarigen_alpha_tilemap, 0, 0); + return 0; +} |