/*************************************************************************** Tehkan World Cup - (c) Tehkan 1985 Ernesto Corvi ernesto@imagina.com Roberto Juan Fresca robbiex@rocketmail.com ***************************************************************************/ #include "driver.h" UINT8 *tehkanwc_videoram2; static UINT8 scroll_x[2]; static UINT8 led0,led1; static tilemap *bg_tilemap, *fg_tilemap; WRITE8_HANDLER( tehkanwc_videoram_w ) { videoram[offset] = data; tilemap_mark_tile_dirty(fg_tilemap, offset); } WRITE8_HANDLER( tehkanwc_colorram_w ) { colorram[offset] = data; tilemap_mark_tile_dirty(fg_tilemap, offset); } WRITE8_HANDLER( tehkanwc_videoram2_w ) { tehkanwc_videoram2[offset] = data; tilemap_mark_tile_dirty(bg_tilemap, offset / 2); } WRITE8_HANDLER( tehkanwc_scroll_x_w ) { scroll_x[offset] = data; } WRITE8_HANDLER( tehkanwc_scroll_y_w ) { tilemap_set_scrolly(bg_tilemap, 0, data); } WRITE8_HANDLER( tehkanwc_flipscreen_x_w ) { flip_screen_x_set(data & 0x40); } WRITE8_HANDLER( tehkanwc_flipscreen_y_w ) { flip_screen_y_set(data & 0x40); } WRITE8_HANDLER( gridiron_led0_w ) { led0 = data; } WRITE8_HANDLER( gridiron_led1_w ) { led1 = data; } static TILE_GET_INFO( get_bg_tile_info ) { int offs = tile_index * 2; int attr = tehkanwc_videoram2[offs + 1]; int code = tehkanwc_videoram2[offs] + ((attr & 0x30) << 4); int color = attr & 0x0f; int flags = ((attr & 0x40) ? TILE_FLIPX : 0) | ((attr & 0x80) ? TILE_FLIPY : 0); SET_TILE_INFO(2, code, color, flags); } static TILE_GET_INFO( get_fg_tile_info ) { int attr = colorram[tile_index]; int code = videoram[tile_index] + ((attr & 0x10) << 4); int color = attr & 0x0f; int flags = ((attr & 0x40) ? TILE_FLIPX : 0) | ((attr & 0x80) ? TILE_FLIPY : 0); tileinfo->category = (attr & 0x20) ? 0 : 1; SET_TILE_INFO(0, code, color, flags); } VIDEO_START( tehkanwc ) { bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 16, 8, 32, 32); fg_tilemap = tilemap_create(get_fg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8, 8, 32, 32); tilemap_set_transparent_pen(fg_tilemap, 0); } /* Gridiron Fight has a LED display on the control panel, to let each player choose the formation without letting the other know. We emulate it by showing a character on the corner of the screen; the association between the bits of the port and the led segments is: ---0--- | | 5 1 | | ---6--- | | 4 2 | | ---3--- bit 7 = enable (0 = display off) */ static void gridiron_draw_led(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect, UINT8 led,int player) { int i; static UINT8 ledvalues[] = { 0x86, 0xdb, 0xcf, 0xe6, 0xed, 0xfd, 0x87, 0xff, 0xf3, 0xf1 }; if ((led & 0x80) == 0) return; for (i = 0;i < 10;i++) { if (led == ledvalues[i] ) break; } if (i < 10) { if (player == 0) drawgfx(bitmap,machine->gfx[0], 0xc0 + i, 0x0a, 0,0, 0,232, cliprect,TRANSPARENCY_NONE,0); else drawgfx(bitmap,machine->gfx[0], 0xc0 + i, 0x03, 1,1, 0,16, cliprect,TRANSPARENCY_NONE,0); } else logerror("unknown LED %02x for player %d\n",led,player); } static void draw_sprites(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect) { int offs; for (offs = 0;offs < spriteram_size;offs += 4) { int attr = spriteram[offs + 1]; int code = spriteram[offs] + ((attr & 0x08) << 5); int color = attr & 0x07; int flipx = attr & 0x40; int flipy = attr & 0x80; int sx = spriteram[offs + 2] + ((attr & 0x20) << 3) - 128; int sy = spriteram[offs + 3]; if (flip_screen_x) { sx = 240 - sx; flipx = !flipx; } if (flip_screen_y) { sy = 240 - sy; flipy = !flipy; } drawgfx(bitmap, machine->gfx[1], code, color, flipx, flipy, sx, sy, cliprect, TRANSPARENCY_PEN, 0); } } VIDEO_UPDATE( tehkanwc ) { tilemap_set_scrollx(bg_tilemap, 0, scroll_x[0] + 256 * scroll_x[1]); tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0); tilemap_draw(bitmap, cliprect, fg_tilemap, 0, 0); draw_sprites(machine, bitmap, cliprect); tilemap_draw(bitmap, cliprect, fg_tilemap, 1, 0); gridiron_draw_led(machine, bitmap, cliprect, led0, 0); gridiron_draw_led(machine, bitmap, cliprect, led1, 1); return 0; }