// license:BSD-3-Clause // copyright-holders:Jarek Parchanski /*************************************************************************** Goindol Functions to emulate the video hardware of the machine. ***************************************************************************/ #include "emu.h" #include "includes/goindol.h" /*************************************************************************** Callbacks for the TileMap code ***************************************************************************/ TILE_GET_INFO_MEMBER(goindol_state::get_fg_tile_info) { int code = m_fg_videoram[2 * tile_index + 1]; int attr = m_fg_videoram[2 * tile_index]; SET_TILE_INFO_MEMBER(0, code | ((attr & 0x7) << 8) | (m_char_bank << 11), (attr & 0xf8) >> 3, 0); } TILE_GET_INFO_MEMBER(goindol_state::get_bg_tile_info) { int code = m_bg_videoram[2 * tile_index + 1]; int attr = m_bg_videoram[2 * tile_index]; SET_TILE_INFO_MEMBER(1, code | ((attr & 0x7) << 8) | (m_char_bank << 11), (attr & 0xf8) >> 3, 0); } /*************************************************************************** Start the video hardware emulation. ***************************************************************************/ void goindol_state::video_start() { m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(goindol_state::get_bg_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); m_fg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(goindol_state::get_fg_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); m_fg_tilemap->set_transparent_pen(0); } /*************************************************************************** Memory handlers ***************************************************************************/ WRITE8_MEMBER(goindol_state::goindol_fg_videoram_w) { m_fg_videoram[offset] = data; m_fg_tilemap->mark_tile_dirty(offset / 2); } WRITE8_MEMBER(goindol_state::goindol_bg_videoram_w) { m_bg_videoram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset / 2); } /*************************************************************************** Display refresh ***************************************************************************/ void goindol_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect, int gfxbank, uint8_t *sprite_ram ) { int offs, sx, sy, tile, palette; for (offs = 0; offs < m_spriteram.bytes(); offs += 4) { sx = sprite_ram[offs]; sy = 240 - sprite_ram[offs + 1]; if (flip_screen()) { sx = 248 - sx; sy = 248 - sy; } if ((sprite_ram[offs + 1] >> 3) && (sx < 248)) { tile = ((sprite_ram[offs + 3]) + ((sprite_ram[offs + 2] & 7) << 8)); tile += tile; palette = sprite_ram[offs + 2] >> 3; m_gfxdecode->gfx(gfxbank)->transpen(bitmap,cliprect, tile, palette, flip_screen(),flip_screen(), sx,sy, 0); m_gfxdecode->gfx(gfxbank)->transpen(bitmap,cliprect, tile+1, palette, flip_screen(),flip_screen(), sx,sy + (flip_screen() ? -8 : 8), 0); } } } uint32_t goindol_state::screen_update_goindol(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_fg_tilemap->set_scrollx(0, *m_fg_scrollx); m_fg_tilemap->set_scrolly(0, *m_fg_scrolly); m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprites(bitmap, cliprect, 1, m_spriteram); draw_sprites(bitmap, cliprect, 0, m_spriteram2); return 0; }