diff options
Diffstat (limited to 'src/mame/video/segaxbd.c')
-rw-r--r-- | src/mame/video/segaxbd.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/mame/video/segaxbd.c b/src/mame/video/segaxbd.c new file mode 100644 index 00000000000..6015a109517 --- /dev/null +++ b/src/mame/video/segaxbd.c @@ -0,0 +1,102 @@ +/*************************************************************************** + + Sega X-board hardware + +***************************************************************************/ + +#include "driver.h" +#include "segaic16.h" +#include "includes/system16.h" + + + +/************************************* + * + * Statics + * + *************************************/ + +static UINT8 road_priority; + + + +/************************************* + * + * Video startup + * + *************************************/ + +VIDEO_START( xboard ) +{ + /* compute palette info */ + segaic16_palette_init(0x2000); + + /* initialize the tile/text layers */ + segaic16_tilemap_init(0, SEGAIC16_TILEMAP_16B, 0x1c00, 0, 2); + + /* initialize the sprites */ + segaic16_sprites_init(0, SEGAIC16_SPRITES_XBOARD, 0x000, 0); + + /* initialize the road */ + segaic16_road_init(0, SEGAIC16_ROAD_XBOARD, 0x1700, 0x1720, 0x1780, -166); +} + + + +/************************************* + * + * Miscellaneous setters + * + *************************************/ + +void xboard_set_road_priority(int priority) +{ + /* this is only set at init time */ + road_priority = priority; +} + + + +/************************************* + * + * Video update + * + *************************************/ + +VIDEO_UPDATE( xboard ) +{ + /* if no drawing is happening, fill with black and get out */ + if (!segaic16_display_enable) + { + fillbitmap(bitmap, get_black_pen(machine), cliprect); + return 0; + } + + /* reset priorities */ + fillbitmap(priority_bitmap, 0, cliprect); + + /* draw the low priority road layer */ + segaic16_road_draw(0, bitmap, cliprect, SEGAIC16_ROAD_BACKGROUND); + if (road_priority == 0) + segaic16_road_draw(0, bitmap, cliprect, SEGAIC16_ROAD_FOREGROUND); + + /* draw background */ + segaic16_tilemap_draw(machine, 0, bitmap, cliprect, SEGAIC16_TILEMAP_BACKGROUND, 0, 0x01); + segaic16_tilemap_draw(machine, 0, bitmap, cliprect, SEGAIC16_TILEMAP_BACKGROUND, 1, 0x02); + + /* draw foreground */ + segaic16_tilemap_draw(machine, 0, bitmap, cliprect, SEGAIC16_TILEMAP_FOREGROUND, 0, 0x02); + segaic16_tilemap_draw(machine, 0, bitmap, cliprect, SEGAIC16_TILEMAP_FOREGROUND, 1, 0x04); + + /* draw the high priority road */ + if (road_priority == 1) + segaic16_road_draw(0, bitmap, cliprect, SEGAIC16_ROAD_FOREGROUND); + + /* text layer */ + segaic16_tilemap_draw(machine, 0, bitmap, cliprect, SEGAIC16_TILEMAP_TEXT, 0, 0x04); + segaic16_tilemap_draw(machine, 0, bitmap, cliprect, SEGAIC16_TILEMAP_TEXT, 1, 0x08); + + /* draw the sprites */ + segaic16_sprites_draw(0, bitmap, cliprect); + return 0; +} |