// license:BSD-3-Clause // copyright-holders:Aaron Giles /*************************************************************************** Atari Toobin' hardware ****************************************************************************/ #include "emu.h" #include "machine/atarigen.h" #include "includes/toobin.h" /************************************* * * Tilemap callbacks * *************************************/ TILE_GET_INFO_MEMBER(toobin_state::get_alpha_tile_info) { uint16_t data = m_alpha_tilemap->basemem_read(tile_index); int code = data & 0x3ff; int color = (data >> 12) & 0x0f; SET_TILE_INFO_MEMBER(2, code, color, (data >> 10) & 1); } TILE_GET_INFO_MEMBER(toobin_state::get_playfield_tile_info) { uint32_t data = m_playfield_tilemap->basemem_read(tile_index); int code = data & 0x3fff; int color = (data >> 16) & 0x0f; SET_TILE_INFO_MEMBER(0, code, color, TILE_FLIPYX(data >> 14)); tileinfo.category = (data >> 20) & 3; } /************************************* * * Video system start * *************************************/ const atari_motion_objects_config toobin_state::s_mob_config = { 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 */ {{ 0,0x3fff,0,0 }}, /* mask for the 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" */ }; void toobin_state::video_start() { /* allocate a playfield bitmap for rendering */ m_screen->register_screen_bitmap(m_pfbitmap); save_item(NAME(m_brightness)); } /************************************* * * Palette RAM write handler * *************************************/ WRITE16_MEMBER( toobin_state::paletteram_w ) { COMBINE_DATA(&m_paletteram[offset]); uint16_t newword = m_paletteram[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; m_palette->set_pen_color(offset & 0x3ff, rgb_t(red, green, blue)); if (!(newword & 0x8000)) m_palette->set_pen_contrast(offset & 0x3ff, m_brightness); else m_palette->set_pen_contrast(offset & 0x3ff, 1.0); } } WRITE16_MEMBER( toobin_state::intensity_w ) { int i; if (ACCESSING_BITS_0_7) { m_brightness = (double)(~data & 0x1f) / 31.0; for (i = 0; i < 0x400; i++) if (!BIT(m_paletteram[i], 15)) m_palette->set_pen_contrast(i, m_brightness); } } /************************************* * * X/Y scroll handlers * *************************************/ WRITE16_MEMBER( toobin_state::xscroll_w ) { uint16_t oldscroll = *m_xscroll; uint16_t newscroll = oldscroll; COMBINE_DATA(&newscroll); /* if anything has changed, force a partial update */ if (newscroll != oldscroll) m_screen->update_partial(m_screen->vpos()); /* update the playfield scrolling - hscroll is clocked on the following scanline */ m_playfield_tilemap->set_scrollx(0, newscroll >> 6); m_mob->set_xscroll(newscroll >> 6); /* update the data */ *m_xscroll = newscroll; } WRITE16_MEMBER( toobin_state::yscroll_w ) { uint16_t oldscroll = *m_yscroll; uint16_t newscroll = oldscroll; COMBINE_DATA(&newscroll); /* if anything has changed, force a partial update */ if (newscroll != oldscroll) m_screen->update_partial(m_screen->vpos()); /* if bit 4 is zero, the scroll value is clocked in right away */ m_playfield_tilemap->set_scrolly(0, newscroll >> 6); m_mob->set_yscroll((newscroll >> 6) & 0x1ff); /* update the data */ *m_yscroll = newscroll; } /************************************* * * X/Y scroll handlers * *************************************/ WRITE16_MEMBER( toobin_state::slip_w ) { uint16_t oldslip = m_mob->slipram(offset); uint16_t newslip = oldslip; COMBINE_DATA(&newslip); /* if the SLIP is changing, force a partial update first */ if (oldslip != newslip) m_screen->update_partial(m_screen->vpos()); /* update the data */ m_mob->slipram(offset) = newslip; } /************************************* * * Main refresh * *************************************/ uint32_t toobin_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { // start drawing m_mob->draw_async(cliprect); /* draw the playfield */ bitmap_ind8 &priority_bitmap = screen.priority(); priority_bitmap.fill(0, cliprect); m_playfield_tilemap->draw(screen, m_pfbitmap, cliprect, 0, 0); m_playfield_tilemap->draw(screen, m_pfbitmap, cliprect, 1, 1); m_playfield_tilemap->draw(screen, m_pfbitmap, cliprect, 2, 2); m_playfield_tilemap->draw(screen, m_pfbitmap, cliprect, 3, 3); /* draw and merge the MO */ bitmap_ind16 &mobitmap = m_mob->bitmap(); const pen_t *palette = m_palette->pens(); for (int y = cliprect.top(); y <= cliprect.bottom(); y++) { uint32_t *dest = &bitmap.pix32(y); uint16_t *mo = &mobitmap.pix16(y); uint16_t *pf = &m_pfbitmap.pix16(y); uint8_t *pri = &priority_bitmap.pix8(y); for (int x = cliprect.left(); x <= cliprect.right(); x++) { uint16_t pix = pf[x]; if (mo[x] != 0xffff) { /* 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] || !(pix & 8)) pix = mo[x]; } dest[x] = palette[pix]; } } /* add the alpha on top */ m_alpha_tilemap->draw(screen, bitmap, cliprect, 0, 0); return 0; }