/*************************************************************************** video/zerozone.c ***************************************************************************/ #include "emu.h" #include "includes/zerozone.h" WRITE16_HANDLER( zerozone_tilemap_w ) { zerozone_state *state = space->machine().driver_data(); COMBINE_DATA(&state->m_videoram[offset]); tilemap_mark_tile_dirty(state->m_zz_tilemap,offset); } WRITE16_HANDLER(zerozone_tilebank_w) { zerozone_state *state = space->machine().driver_data(); // popmessage ("Data %04x",data); state->m_tilebank = data & 0x07; tilemap_mark_all_tiles_dirty(state->m_zz_tilemap); } static TILE_GET_INFO( get_zerozone_tile_info ) { zerozone_state *state = machine.driver_data(); int tileno = state->m_videoram[tile_index] & 0x07ff; int colour = state->m_videoram[tile_index] & 0xf000; if (state->m_videoram[tile_index] & 0x0800) tileno += state->m_tilebank * 0x800; SET_TILE_INFO(0, tileno, colour >> 12, 0); } VIDEO_START( zerozone ) { zerozone_state *state = machine.driver_data(); // i'm not 100% sure it should be opaque, pink title screen looks strange in las vegas girls // but if its transparent other things look incorrect state->m_zz_tilemap = tilemap_create(machine, get_zerozone_tile_info, tilemap_scan_cols, 8, 8, 64, 32); } SCREEN_UPDATE( zerozone ) { zerozone_state *state = screen->machine().driver_data(); tilemap_draw(bitmap, cliprect, state->m_zz_tilemap, 0, 0); return 0; }