#include "emu.h" #include "includes/wc90.h" /*************************************************************************** Callbacks for the TileMap code ***************************************************************************/ static TILE_GET_INFO( get_bg_tile_info ) { wc90_state *state = machine.driver_data(); int attr = state->m_bgvideoram[tile_index]; int tile = state->m_bgvideoram[tile_index + 0x800] + 256 * ((attr & 3) + ((attr >> 1) & 4)); SET_TILE_INFO( 2, tile, attr >> 4, 0); } static TILE_GET_INFO( get_fg_tile_info ) { wc90_state *state = machine.driver_data(); int attr = state->m_fgvideoram[tile_index]; int tile = state->m_fgvideoram[tile_index + 0x800] + 256 * ((attr & 3) + ((attr >> 1) & 4)); SET_TILE_INFO( 1, tile, attr >> 4, 0); } static TILE_GET_INFO( get_tx_tile_info ) { wc90_state *state = machine.driver_data(); SET_TILE_INFO( 0, state->m_txvideoram[tile_index + 0x800] + ((state->m_txvideoram[tile_index] & 0x07) << 8), state->m_txvideoram[tile_index] >> 4, 0); } static TILE_GET_INFO( track_get_bg_tile_info ) { wc90_state *state = machine.driver_data(); int attr = state->m_bgvideoram[tile_index]; int tile = state->m_bgvideoram[tile_index + 0x800] + 256 * (attr & 7); SET_TILE_INFO( 2, tile, attr >> 4, 0); } static TILE_GET_INFO( track_get_fg_tile_info ) { wc90_state *state = machine.driver_data(); int attr = state->m_fgvideoram[tile_index]; int tile = state->m_fgvideoram[tile_index + 0x800] + 256 * (attr & 7); SET_TILE_INFO( 1, tile, attr >> 4, 0); } /*************************************************************************** Start the video hardware emulation. ***************************************************************************/ VIDEO_START( wc90 ) { wc90_state *state = machine.driver_data(); state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info,tilemap_scan_rows, 16,16,64,32); state->m_fg_tilemap = tilemap_create(machine, get_fg_tile_info,tilemap_scan_rows,16,16,64,32); state->m_tx_tilemap = tilemap_create(machine, get_tx_tile_info,tilemap_scan_rows, 8, 8,64,32); tilemap_set_transparent_pen(state->m_fg_tilemap,0); tilemap_set_transparent_pen(state->m_tx_tilemap,0); } VIDEO_START( wc90t ) { wc90_state *state = machine.driver_data(); state->m_bg_tilemap = tilemap_create(machine, track_get_bg_tile_info,tilemap_scan_rows, 16,16,64,32); state->m_fg_tilemap = tilemap_create(machine, track_get_fg_tile_info,tilemap_scan_rows,16,16,64,32); state->m_tx_tilemap = tilemap_create(machine, get_tx_tile_info,tilemap_scan_rows, 8, 8,64,32); tilemap_set_transparent_pen(state->m_fg_tilemap,0); tilemap_set_transparent_pen(state->m_tx_tilemap,0); } /*************************************************************************** Memory handlers ***************************************************************************/ WRITE8_HANDLER( wc90_bgvideoram_w ) { wc90_state *state = space->machine().driver_data(); state->m_bgvideoram[offset] = data; tilemap_mark_tile_dirty(state->m_bg_tilemap,offset & 0x7ff); } WRITE8_HANDLER( wc90_fgvideoram_w ) { wc90_state *state = space->machine().driver_data(); state->m_fgvideoram[offset] = data; tilemap_mark_tile_dirty(state->m_fg_tilemap,offset & 0x7ff); } WRITE8_HANDLER( wc90_txvideoram_w ) { wc90_state *state = space->machine().driver_data(); state->m_txvideoram[offset] = data; tilemap_mark_tile_dirty(state->m_tx_tilemap,offset & 0x7ff); } /*************************************************************************** Display refresh ***************************************************************************/ #define WC90_DRAW_SPRITE( code, sx, sy ) \ drawgfx_transpen( bitmap, cliprect, machine.gfx[3], code, flags >> 4, \ bank&1, bank&2, sx, sy, 0 ) static const char p32x32[4][4] = { { 0, 1, 2, 3 }, { 1, 0, 3, 2 }, { 2, 3, 0, 1 }, { 3, 2, 1, 0 } }; static const char p32x64[4][8] = { { 0, 1, 2, 3, 4, 5, 6, 7 }, { 5, 4, 7, 6, 1, 0, 3, 2 }, { 2, 3, 0, 1, 6, 7, 4, 5 }, { 7, 6, 5, 4, 3, 2, 1, 0 } }; static const char p64x32[4][8] = { { 0, 1, 2, 3, 4, 5, 6, 7 }, { 1, 0, 3, 2, 5, 4, 7, 6 }, { 6, 7, 4, 5, 2, 3, 0, 1 }, { 7, 6, 5, 4, 3, 2, 1, 0 } }; static const char p64x64[4][16] = { { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, { 5, 4, 7, 6, 1, 0, 3, 2, 13, 12, 15, 14, 9, 8, 11, 10 }, { 10, 11, 8, 9, 14, 15, 12, 13, 2, 3, 0, 1, 6, 7, 4, 5 }, { 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 } }; static void draw_sprite_16x16(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { WC90_DRAW_SPRITE( code, sx, sy ); } static void draw_sprite_16x32(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { if ( bank & 2 ) { WC90_DRAW_SPRITE( code+1, sx, sy+16 ); WC90_DRAW_SPRITE( code, sx, sy ); } else { WC90_DRAW_SPRITE( code, sx, sy ); WC90_DRAW_SPRITE( code+1, sx, sy+16 ); } } static void draw_sprite_16x64(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { if ( bank & 2 ) { WC90_DRAW_SPRITE( code+3, sx, sy+48 ); WC90_DRAW_SPRITE( code+2, sx, sy+32 ); WC90_DRAW_SPRITE( code+1, sx, sy+16 ); WC90_DRAW_SPRITE( code, sx, sy ); } else { WC90_DRAW_SPRITE( code, sx, sy ); WC90_DRAW_SPRITE( code+1, sx, sy+16 ); WC90_DRAW_SPRITE( code+2, sx, sy+32 ); WC90_DRAW_SPRITE( code+3, sx, sy+48 ); } } static void draw_sprite_32x16(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { if ( bank & 1 ) { WC90_DRAW_SPRITE( code+1, sx+16, sy ); WC90_DRAW_SPRITE( code, sx, sy ); } else { WC90_DRAW_SPRITE( code, sx, sy ); WC90_DRAW_SPRITE( code+1, sx+16, sy ); } } static void draw_sprite_32x32(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { const char *p = p32x32[ bank&3 ]; WC90_DRAW_SPRITE( code+p[0], sx, sy ); WC90_DRAW_SPRITE( code+p[1], sx+16, sy ); WC90_DRAW_SPRITE( code+p[2], sx, sy+16 ); WC90_DRAW_SPRITE( code+p[3], sx+16, sy+16 ); } static void draw_sprite_32x64(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { const char *p = p32x64[ bank&3 ]; WC90_DRAW_SPRITE( code+p[0], sx, sy ); WC90_DRAW_SPRITE( code+p[1], sx+16, sy ); WC90_DRAW_SPRITE( code+p[2], sx, sy+16 ); WC90_DRAW_SPRITE( code+p[3], sx+16, sy+16 ); WC90_DRAW_SPRITE( code+p[4], sx, sy+32 ); WC90_DRAW_SPRITE( code+p[5], sx+16, sy+32 ); WC90_DRAW_SPRITE( code+p[6], sx, sy+48 ); WC90_DRAW_SPRITE( code+p[7], sx+16, sy+48 ); } static void draw_sprite_64x16(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { if ( bank & 1 ) { WC90_DRAW_SPRITE( code+3, sx+48, sy ); WC90_DRAW_SPRITE( code+2, sx+32, sy ); WC90_DRAW_SPRITE( code+1, sx+16, sy ); WC90_DRAW_SPRITE( code, sx, sy ); } else { WC90_DRAW_SPRITE( code, sx, sy ); WC90_DRAW_SPRITE( code+1, sx+16, sy ); WC90_DRAW_SPRITE( code+2, sx+32, sy ); WC90_DRAW_SPRITE( code+3, sx+48, sy ); } } static void draw_sprite_64x32(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { const char *p = p64x32[ bank&3 ]; WC90_DRAW_SPRITE( code+p[0], sx, sy ); WC90_DRAW_SPRITE( code+p[1], sx+16, sy ); WC90_DRAW_SPRITE( code+p[2], sx, sy+16 ); WC90_DRAW_SPRITE( code+p[3], sx+16, sy+16 ); WC90_DRAW_SPRITE( code+p[4], sx+32, sy ); WC90_DRAW_SPRITE( code+p[5], sx+48, sy ); WC90_DRAW_SPRITE( code+p[6], sx+32, sy+16 ); WC90_DRAW_SPRITE( code+p[7], sx+48, sy+16 ); } static void draw_sprite_64x64(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { const char *p = p64x64[ bank&3 ]; WC90_DRAW_SPRITE( code+p[0], sx, sy ); WC90_DRAW_SPRITE( code+p[1], sx+16, sy ); WC90_DRAW_SPRITE( code+p[2], sx, sy+16 ); WC90_DRAW_SPRITE( code+p[3], sx+16, sy+16 ); WC90_DRAW_SPRITE( code+p[4], sx+32, sy ); WC90_DRAW_SPRITE( code+p[5], sx+48, sy ); WC90_DRAW_SPRITE( code+p[6], sx+32, sy+16 ); WC90_DRAW_SPRITE( code+p[7], sx+48, sy+16 ); WC90_DRAW_SPRITE( code+p[8], sx, sy+32 ); WC90_DRAW_SPRITE( code+p[9], sx+16, sy+32 ); WC90_DRAW_SPRITE( code+p[10], sx, sy+48 ); WC90_DRAW_SPRITE( code+p[11], sx+16, sy+48 ); WC90_DRAW_SPRITE( code+p[12], sx+32, sy+32 ); WC90_DRAW_SPRITE( code+p[13], sx+48, sy+32 ); WC90_DRAW_SPRITE( code+p[14], sx+32, sy+48 ); WC90_DRAW_SPRITE( code+p[15], sx+48, sy+48 ); } static void draw_sprite_invalid(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int code, int sx, int sy, int bank, int flags ) { logerror("8 pixel sprite size not supported\n" ); } typedef void (*draw_sprites_func)(running_machine &, bitmap_t *, const rectangle *, int, int, int, int, int ); static const draw_sprites_func draw_sprites_proc[16] = { draw_sprite_invalid, /* 0000 = 08x08 */ draw_sprite_invalid, /* 0001 = 16x08 */ draw_sprite_invalid, /* 0010 = 32x08 */ draw_sprite_invalid, /* 0011 = 64x08 */ draw_sprite_invalid, /* 0100 = 08x16 */ draw_sprite_16x16, /* 0101 = 16x16 */ draw_sprite_32x16, /* 0110 = 32x16 */ draw_sprite_64x16, /* 0111 = 64x16 */ draw_sprite_invalid, /* 1000 = 08x32 */ draw_sprite_16x32, /* 1001 = 16x32 */ draw_sprite_32x32, /* 1010 = 32x32 */ draw_sprite_64x32, /* 1011 = 64x32 */ draw_sprite_invalid, /* 1100 = 08x64 */ draw_sprite_16x64, /* 1101 = 16x64 */ draw_sprite_32x64, /* 1110 = 32x64 */ draw_sprite_64x64 /* 1111 = 64x64 */ }; static void draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int priority ) { wc90_state *state = machine.driver_data(); UINT8 *spriteram = state->m_spriteram; int offs, sx,sy, flags, which; /* draw all visible sprites of specified priority */ for (offs = 0;offs < state->m_spriteram_size;offs += 16){ int bank = spriteram[offs+0]; if ( ( bank >> 4 ) == priority ) { if ( bank & 4 ) { /* visible */ which = ( spriteram[offs+2] >> 2 ) + ( spriteram[offs+3] << 6 ); sx = spriteram[offs + 8] + ( (spriteram[offs + 9] & 3 ) << 8 ); sy = spriteram[offs + 6] + ( (spriteram[offs + 7] & 1 ) << 8 ); if (sx >= 0x0300) sx -= 0x0400; flags = spriteram[offs+4]; ( *( draw_sprites_proc[ flags & 0x0f ] ) )(machine, bitmap,cliprect, which, sx, sy, bank, flags ); } } } } #undef WC90_DRAW_SPRITE SCREEN_UPDATE( wc90 ) { wc90_state *state = screen->machine().driver_data(); tilemap_set_scrollx(state->m_bg_tilemap,0,state->m_scroll2xlo[0] + 256 * state->m_scroll2xhi[0]); tilemap_set_scrolly(state->m_bg_tilemap,0,state->m_scroll2ylo[0] + 256 * state->m_scroll2yhi[0]); tilemap_set_scrollx(state->m_fg_tilemap,0,state->m_scroll1xlo[0] + 256 * state->m_scroll1xhi[0]); tilemap_set_scrolly(state->m_fg_tilemap,0,state->m_scroll1ylo[0] + 256 * state->m_scroll1yhi[0]); tilemap_set_scrollx(state->m_tx_tilemap,0,state->m_scroll0xlo[0] + 256 * state->m_scroll0xhi[0]); tilemap_set_scrolly(state->m_tx_tilemap,0,state->m_scroll0ylo[0] + 256 * state->m_scroll0yhi[0]); // draw_sprites(screen->machine(), bitmap,cliprect, 3 ); tilemap_draw(bitmap,cliprect,state->m_bg_tilemap,0,0); draw_sprites(screen->machine(), bitmap,cliprect, 2 ); tilemap_draw(bitmap,cliprect,state->m_fg_tilemap,0,0); draw_sprites(screen->machine(), bitmap,cliprect, 1 ); tilemap_draw(bitmap,cliprect,state->m_tx_tilemap,0,0); draw_sprites(screen->machine(), bitmap,cliprect, 0 ); return 0; }