// license:BSD-3-Clause // copyright-holders:Angelo Salese, Pierpaolo Prazzoli, Bryan McPhail /**************************************************************************************** Competition Golf Final Round video hardware emulation ****************************************************************************************/ #include "emu.h" #include "includes/compgolf.h" void compgolf_state::compgolf_palette(palette_device &palette) const { uint8_t const *const color_prom = memregion("proms")->base(); for (int i = 0; i < palette.entries(); i++) { int bit0,bit1,bit2; bit0 = (color_prom[i] >> 0) & 0x01; bit1 = (color_prom[i] >> 1) & 0x01; bit2 = (color_prom[i] >> 2) & 0x01; int const r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; bit0 = (color_prom[i] >> 3) & 0x01; bit1 = (color_prom[i] >> 4) & 0x01; bit2 = (color_prom[i] >> 5) & 0x01; int const g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; bit0 = 0; bit1 = (color_prom[i] >> 6) & 0x01; bit2 = (color_prom[i] >> 7) & 0x01; int const b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; palette.set_pen_color(i, rgb_t(r, g, b)); } } WRITE8_MEMBER(compgolf_state::compgolf_video_w) { m_videoram[offset] = data; m_text_tilemap->mark_tile_dirty(offset / 2); } WRITE8_MEMBER(compgolf_state::compgolf_back_w) { m_bg_ram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset / 2); } TILE_GET_INFO_MEMBER(compgolf_state::get_text_info) { tile_index <<= 1; SET_TILE_INFO_MEMBER(2, m_videoram[tile_index + 1] | (m_videoram[tile_index] << 8), m_videoram[tile_index] >> 2, 0); } TILEMAP_MAPPER_MEMBER(compgolf_state::back_scan) { /* logical (col,row) -> memory offset */ return (col & 0x0f) + ((row & 0x0f) << 4) + ((col & 0x10) << 4) + ((row & 0x10) << 5); } TILE_GET_INFO_MEMBER(compgolf_state::get_back_info) { int attr = m_bg_ram[tile_index * 2]; int code = m_bg_ram[tile_index * 2 + 1] + ((attr & 1) << 8); int color = (attr & 0x3e) >> 1; SET_TILE_INFO_MEMBER(1, code, color, 0); } void compgolf_state::video_start() { m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(compgolf_state::get_back_info)), tilemap_mapper_delegate(*this, FUNC(compgolf_state::back_scan)), 16, 16, 32, 32); m_text_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(compgolf_state::get_text_info)), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); m_text_tilemap->set_transparent_pen(0); } /* preliminary sprite list: 0 1 2 3 xx------ xxxxxxxx -------- -------- sprite code ---x---- -------- -------- -------- Double Height ----x--- -------- -------- -------- Color,all of it? -------- -------- xxxxxxxx -------- Y pos -------- -------- -------- xxxxxxxx X pos -----x-- -------- -------- -------- Flip X -------- -------- -------- -------- Flip Y(used?) */ void compgolf_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect ) { int offs, fx, fy, x, y, color, sprite; for (offs = 0; offs < 0x60; offs += 4) { sprite = m_spriteram[offs + 1] + (((m_spriteram[offs] & 0xc0) >> 6) * 0x100); x = 240 - m_spriteram[offs + 3]; y = m_spriteram[offs + 2]; color = (m_spriteram[offs] & 8)>>3; fx = m_spriteram[offs] & 4; fy = 0; /* ? */ m_gfxdecode->gfx(0)->transpen(bitmap,cliprect, sprite, color,fx,fy,x,y,0); /* Double Height */ if(m_spriteram[offs] & 0x10) { m_gfxdecode->gfx(0)->transpen(bitmap,cliprect, sprite + 1, color, fx, fy, x, y + 16, 0); } } } uint32_t compgolf_state::screen_update_compgolf(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int scrollx = m_scrollx_hi + m_scrollx_lo; int scrolly = m_scrolly_hi + m_scrolly_lo; m_bg_tilemap->set_scrollx(0, scrollx); m_bg_tilemap->set_scrolly(0, scrolly); m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_text_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprites(bitmap, cliprect); return 0; }