// license:BSD-3-Clause // copyright-holders:Bryan McPhail /******************************************************************************* Karnov - Bryan McPhail, mish@tendril.co.uk *******************************************************************************/ #include "emu.h" #include "includes/karnov.h" /******************************************************************************/ uint32_t karnov_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int const flip = BIT(m_scroll[0], 15); m_bg_tilemap->set_flip(flip ? (TILEMAP_FLIPY | TILEMAP_FLIPX) : 0); m_fix_tilemap->set_flip(flip ? (TILEMAP_FLIPY | TILEMAP_FLIPX) : 0); m_spritegen->set_flip_screen(flip); m_bg_tilemap->set_scrollx(m_scroll[0]); m_bg_tilemap->set_scrolly(m_scroll[1]); m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0); m_spritegen->draw_sprites(screen, bitmap, cliprect, m_gfxdecode->gfx(2), m_spriteram->buffer(), 0x800); m_fix_tilemap->draw(screen, bitmap, cliprect, 0, 0); return 0; } /******************************************************************************/ TILE_GET_INFO_MEMBER(karnov_state::get_fix_tile_info) { int tile = m_videoram[tile_index]; SET_TILE_INFO_MEMBER(0, tile & 0xfff, tile >> 14, 0); } TILE_GET_INFO_MEMBER(karnov_state::get_bg_tile_info) { int tile = m_pf_data[tile_index]; SET_TILE_INFO_MEMBER(1, tile & 0x7ff, tile >> 12, 0); } WRITE16_MEMBER(karnov_state::videoram_w) { COMBINE_DATA(&m_videoram[offset]); m_fix_tilemap->mark_tile_dirty(offset); } void karnov_state::playfield_w(offs_t offset, u16 data, u16 mem_mask) { COMBINE_DATA(&m_pf_data[offset]); m_bg_tilemap->mark_tile_dirty(offset); } /******************************************************************************/ VIDEO_START_MEMBER(karnov_state,karnov) { /* Allocate bitmap & tilemap */ m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(karnov_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 16, 16, 32, 32); m_fix_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(karnov_state::get_fix_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); m_fix_tilemap->set_transparent_pen(0); } VIDEO_START_MEMBER(karnov_state,wndrplnt) { /* Allocate bitmap & tilemap */ m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(karnov_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 16, 16, 32, 32); m_fix_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(karnov_state::get_fix_tile_info)), TILEMAP_SCAN_COLS, 8, 8, 32, 32); m_fix_tilemap->set_transparent_pen(0); } /******************************************************************************/