// license:BSD-3-Clause // copyright-holders:David Haywood, Phil Bennett /************************************************************************* Kyuukoukabakugekitai - Dive Bomber Squad *************************************************************************/ #include "emu.h" #include "includes/divebomb.h" #include "video/resnet.h" /************************************* * * Tilemap callbacks * *************************************/ TILE_GET_INFO_MEMBER(divebomb_state::get_fg_tile_info) { uint32_t code = m_fgram[tile_index + 0x000]; uint32_t attr = m_fgram[tile_index + 0x400]; uint32_t colour = attr >> 4; code |= (attr & 0x3) << 8; SET_TILE_INFO_MEMBER(0, code, colour, 0); } /************************************* * * K051316 callbacks * *************************************/ K051316_CB_MEMBER(divebomb_state::zoom_callback_1) { *code |= (*color & 0x03) << 8; *color = 0 + ((m_roz_pal >> 4) & 3); } K051316_CB_MEMBER(divebomb_state::zoom_callback_2) { *code |= (*color & 0x03) << 8; *color = 4 + (m_roz_pal & 3); } /************************************* * * Video hardware handlers * *************************************/ WRITE8_MEMBER(divebomb_state::fgram_w) { m_fgram[offset] = data; m_fg_tilemap->mark_tile_dirty(offset & 0x3ff); } WRITE8_MEMBER(divebomb_state::rozcpu_pal_w) { //.... ..xx K051316 1 palette select //..xx .... K051316 2 palette select uint8_t old_pal = m_roz_pal; m_roz_pal = data; if ((old_pal & 0x03) != (data & 0x03)) m_k051316[1]->mark_tmap_dirty(); if ((old_pal & 0x30) != (data & 0x30)) m_k051316[0]->mark_tmap_dirty(); if (data & 0xcc) logerror("rozcpu_port50_w %02x\n", data); } /************************************* * * Video hardware init * *************************************/ void divebomb_state::decode_proms(const uint8_t * rgn, int size, int index, bool inv) { static const int resistances[4] = { 2000, 1000, 470, 220 }; double rweights[4], gweights[4], bweights[4]; /* compute the color output resistor weights */ compute_resistor_weights(0, 255, -1.0, 4, resistances, rweights, 0, 0, 4, resistances, gweights, 0, 0, 4, resistances, bweights, 0, 0); /* create a lookup table for the palette */ for (uint32_t i = 0; i < size; ++i) { uint32_t rdata = rgn[i + size*2] & 0x0f; uint32_t r = combine_4_weights(rweights, BIT(rdata, 0), BIT(rdata, 1), BIT(rdata, 2), BIT(rdata, 3)); uint32_t gdata = rgn[i + size] & 0x0f; uint32_t g = combine_4_weights(gweights, BIT(gdata, 0), BIT(gdata, 1), BIT(gdata, 2), BIT(gdata, 3)); uint32_t bdata = rgn[i] & 0x0f; uint32_t b = combine_4_weights(bweights, BIT(bdata, 0), BIT(bdata, 1), BIT(bdata, 2), BIT(bdata, 3)); if (!inv) m_palette->set_pen_color(index + i, rgb_t(r, g, b)); else m_palette->set_pen_color(index + (i ^ 0xff), rgb_t(r, g, b)); } } PALETTE_INIT_MEMBER(divebomb_state, divebomb) { decode_proms(memregion("spr_proms")->base(), 0x100, 0x400 + 0x400 + 0x400, false); decode_proms(memregion("fg_proms")->base(), 0x400, 0x400 + 0x400, false); decode_proms(memregion("k051316_1_pr")->base(), 0x400, 0, true); decode_proms(memregion("k051316_2_pr")->base(), 0x400, 0x400, true); } VIDEO_START_MEMBER(divebomb_state,divebomb) { m_fg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(divebomb_state::get_fg_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); m_fg_tilemap->set_transparent_pen(0); m_fg_tilemap->set_scrolly(0, 16); } /************************************* * * Main update * *************************************/ void divebomb_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect) { const uint8_t *spriteram = m_spriteram; for (uint32_t i = 0; i < m_spriteram.bytes(); i += 4) { uint32_t sy = spriteram[i + 3]; uint32_t sx = spriteram[i + 0]; uint32_t code = spriteram[i + 2]; uint32_t attr = spriteram[i + 1]; code += (attr & 0x0f) << 8; uint32_t colour = attr >> 4; m_gfxdecode->gfx(1)->transpen(bitmap, cliprect, code, colour, 0, 0, sx, sy, 0); m_gfxdecode->gfx(1)->transpen(bitmap, cliprect, code, colour, 0, 0, sx, sy-256, 0); } } uint32_t divebomb_state::screen_update_divebomb(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { bitmap.fill(m_palette->black_pen(), cliprect); for (int chip = 1; chip >= 0; chip--) { if (m_roz_enable[chip]) { m_k051316[chip]->zoom_draw(screen, bitmap, cliprect, 0, 0); } } draw_sprites(bitmap, cliprect); m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0); return 0; }