diff options
Diffstat (limited to 'src/mame/video/solomon.c')
-rw-r--r-- | src/mame/video/solomon.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/mame/video/solomon.c b/src/mame/video/solomon.c new file mode 100644 index 00000000000..23e24e2e57d --- /dev/null +++ b/src/mame/video/solomon.c @@ -0,0 +1,107 @@ +#include "driver.h" + +UINT8 *solomon_videoram2; +UINT8 *solomon_colorram2; + +static tilemap *bg_tilemap, *fg_tilemap; + +WRITE8_HANDLER( solomon_videoram_w ) +{ + videoram[offset] = data; + tilemap_mark_tile_dirty(fg_tilemap, offset); +} + +WRITE8_HANDLER( solomon_colorram_w ) +{ + colorram[offset] = data; + tilemap_mark_tile_dirty(fg_tilemap, offset); +} + +WRITE8_HANDLER( solomon_videoram2_w ) +{ + solomon_videoram2[offset] = data; + tilemap_mark_tile_dirty(bg_tilemap, offset); +} + +WRITE8_HANDLER( solomon_colorram2_w ) +{ + solomon_colorram2[offset] = data; + tilemap_mark_tile_dirty(bg_tilemap, offset); +} + +WRITE8_HANDLER( solomon_flipscreen_w ) +{ + if (flip_screen != (data & 0x01)) + { + flip_screen_set(data & 0x01); + tilemap_mark_all_tiles_dirty(ALL_TILEMAPS); + } +} + +static TILE_GET_INFO( get_bg_tile_info ) +{ + int attr = solomon_colorram2[tile_index]; + int code = solomon_videoram2[tile_index] + 256 * (attr & 0x07); + int color = ((attr & 0x70) >> 4); + int flags = ((attr & 0x80) ? TILE_FLIPX : 0) | ((attr & 0x08) ? TILE_FLIPY : 0); + + SET_TILE_INFO(1, code, color, flags); +} + +static TILE_GET_INFO( get_fg_tile_info ) +{ + int attr = colorram[tile_index]; + int code = videoram[tile_index] + 256 * (attr & 0x07); + int color = (attr & 0x70) >> 4; + + SET_TILE_INFO(0, code, color, 0); +} + +VIDEO_START( solomon ) +{ + bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_rows, + TILEMAP_TYPE_PEN, 8, 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); +} + +static void draw_sprites(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect ) +{ + int offs; + + for (offs = spriteram_size - 4; offs >= 0; offs -= 4) + { + int code = spriteram[offs] + 16 * (spriteram[offs + 1] & 0x10); + int color = (spriteram[offs + 1] & 0x0e) >> 1; + int flipx = spriteram[offs + 1] & 0x40; + int flipy = spriteram[offs + 1] & 0x80; + int sx = spriteram[offs + 3]; + int sy = 241 - spriteram[offs + 2]; + + if (flip_screen) + { + sx = 240 - sx; + sy = 242 - sy; + flipx = !flipx; + flipy = !flipy; + } + + drawgfx(bitmap, machine->gfx[2], + code, color, + flipx, flipy, + sx, sy, + cliprect, + TRANSPARENCY_PEN, 0); + } +} + +VIDEO_UPDATE( solomon ) +{ + tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0); + tilemap_draw(bitmap, cliprect, fg_tilemap, 0, 0); + draw_sprites(machine, bitmap, cliprect); + return 0; +} |