// license:BSD-3-Clause // copyright-holders:Nicola Salmoria /*************************************************************************** video.c Functions to emulate the video hardware of the machine. ***************************************************************************/ #include "emu.h" #include "includes/commando.h" WRITE8_MEMBER(commando_state::commando_videoram_w) { m_videoram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset); } WRITE8_MEMBER(commando_state::commando_colorram_w) { m_colorram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset); } WRITE8_MEMBER(commando_state::commando_videoram2_w) { m_videoram2[offset] = data; m_fg_tilemap->mark_tile_dirty(offset); } WRITE8_MEMBER(commando_state::commando_colorram2_w) { m_colorram2[offset] = data; m_fg_tilemap->mark_tile_dirty(offset); } WRITE8_MEMBER(commando_state::commando_scrollx_w) { m_scroll_x[offset] = data; m_bg_tilemap->set_scrollx(0, m_scroll_x[0] | (m_scroll_x[1] << 8)); } WRITE8_MEMBER(commando_state::commando_scrolly_w) { m_scroll_y[offset] = data; m_bg_tilemap->set_scrolly(0, m_scroll_y[0] | (m_scroll_y[1] << 8)); } WRITE8_MEMBER(commando_state::commando_c804_w) { // bits 0 and 1 are coin counters machine().bookkeeping().coin_counter_w(0, data & 0x01); machine().bookkeeping().coin_counter_w(1, data & 0x02); // bit 4 resets the sound CPU m_audiocpu->set_input_line(INPUT_LINE_RESET, (data & 0x10) ? ASSERT_LINE : CLEAR_LINE); // bit 7 flips screen flip_screen_set(data & 0x80); } TILE_GET_INFO_MEMBER(commando_state::get_bg_tile_info) { int attr = m_colorram[tile_index]; int code = m_videoram[tile_index] + ((attr & 0xc0) << 2); int color = attr & 0x0f; int flags = TILE_FLIPYX((attr & 0x30) >> 4); SET_TILE_INFO_MEMBER(1, code, color, flags); } TILE_GET_INFO_MEMBER(commando_state::get_fg_tile_info) { int attr = m_colorram2[tile_index]; int code = m_videoram2[tile_index] + ((attr & 0xc0) << 2); int color = attr & 0x0f; int flags = TILE_FLIPYX((attr & 0x30) >> 4); SET_TILE_INFO_MEMBER(0, code, color, flags); } void commando_state::video_start() { m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(commando_state::get_bg_tile_info)), TILEMAP_SCAN_COLS, 16, 16, 32, 32); m_fg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(commando_state::get_fg_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); m_fg_tilemap->set_transparent_pen(3); } void commando_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect ) { uint8_t *buffered_spriteram = m_spriteram->buffer(); int offs; for (offs = m_spriteram->bytes() - 4; offs >= 0; offs -= 4) { // bit 1 of attr is not used int attr = buffered_spriteram[offs + 1]; int bank = (attr & 0xc0) >> 6; int code = buffered_spriteram[offs] + 256 * bank; int color = (attr & 0x30) >> 4; int flipx = attr & 0x04; int flipy = attr & 0x08; int sx = buffered_spriteram[offs + 3] - ((attr & 0x01) << 8); int sy = buffered_spriteram[offs + 2]; if (flip_screen()) { sx = 240 - sx; sy = 240 - sy; flipx = !flipx; flipy = !flipy; } if (bank < 3) m_gfxdecode->gfx(2)->transpen(bitmap,cliprect, code, color, flipx, flipy, sx, sy, 15); } } uint32_t commando_state::screen_update_commando(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); draw_sprites(bitmap, cliprect); m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0); return 0; }