// license:BSD-3-Clause // copyright-holders:Nicola Salmoria #include "emu.h" #include "includes/gotcha.h" /*************************************************************************** Callbacks for the TileMap code ***************************************************************************/ TILEMAP_MAPPER_MEMBER(gotcha_state::gotcha_tilemap_scan) { return (col & 0x1f) | (row << 5) | ((col & 0x20) << 5); } inline void gotcha_state::get_tile_info( tile_data &tileinfo, int tile_index ,uint16_t *vram, int color_offs) { uint16_t data = vram[tile_index]; int code = (data & 0x3ff) | (m_gfxbank[(data & 0x0c00) >> 10] << 10); SET_TILE_INFO_MEMBER(0, code, (data >> 12) + color_offs, 0); } TILE_GET_INFO_MEMBER(gotcha_state::fg_get_tile_info) { get_tile_info(tileinfo, tile_index, m_fgvideoram, 0); } TILE_GET_INFO_MEMBER(gotcha_state::bg_get_tile_info) { get_tile_info(tileinfo, tile_index, m_bgvideoram, 16); } /*************************************************************************** Start the video hardware emulation. ***************************************************************************/ void gotcha_state::video_start() { m_fg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(gotcha_state::fg_get_tile_info),this), tilemap_mapper_delegate(FUNC(gotcha_state::gotcha_tilemap_scan),this), 16, 16, 64, 32); m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(gotcha_state::bg_get_tile_info),this), tilemap_mapper_delegate(FUNC(gotcha_state::gotcha_tilemap_scan),this), 16, 16, 64, 32); m_fg_tilemap->set_transparent_pen(0); m_fg_tilemap->set_scrolldx(-1, 0); m_bg_tilemap->set_scrolldx(-5, 0); } WRITE16_MEMBER(gotcha_state::gotcha_fgvideoram_w) { COMBINE_DATA(&m_fgvideoram[offset]); m_fg_tilemap->mark_tile_dirty(offset); } WRITE16_MEMBER(gotcha_state::gotcha_bgvideoram_w) { COMBINE_DATA(&m_bgvideoram[offset]); m_bg_tilemap->mark_tile_dirty(offset); } WRITE16_MEMBER(gotcha_state::gotcha_gfxbank_select_w) { if (ACCESSING_BITS_8_15) m_banksel = (data & 0x0300) >> 8; } WRITE16_MEMBER(gotcha_state::gotcha_gfxbank_w) { if (ACCESSING_BITS_8_15) { if (m_gfxbank[m_banksel] != ((data & 0x0f00) >> 8)) { m_gfxbank[m_banksel] = (data & 0x0f00) >> 8; machine().tilemap().mark_all_dirty(); } } } WRITE16_MEMBER(gotcha_state::gotcha_scroll_w) { COMBINE_DATA(&m_scroll[offset]); switch (offset) { case 0: m_fg_tilemap->set_scrollx(0, m_scroll[0]); break; case 1: m_fg_tilemap->set_scrolly(0, m_scroll[1]); break; case 2: m_bg_tilemap->set_scrollx(0, m_scroll[2]); break; case 3: m_bg_tilemap->set_scrolly(0, m_scroll[3]); break; } } uint32_t gotcha_state::screen_update_gotcha(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_sprgen->draw_sprites(bitmap, cliprect, m_spriteram, 0x400); return 0; }