diff options
Diffstat (limited to 'src/mame/video/ssozumo.c')
-rw-r--r-- | src/mame/video/ssozumo.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/mame/video/ssozumo.c b/src/mame/video/ssozumo.c new file mode 100644 index 00000000000..4d88ee57840 --- /dev/null +++ b/src/mame/video/ssozumo.c @@ -0,0 +1,181 @@ +/*************************************************************************** + +Syusse Oozumou +(c) 1984 Technos Japan (Licensed by Data East) + +Driver by Takahiro Nogi (nogi@kt.rim.or.jp) 1999/10/04 + +***************************************************************************/ + +#include "driver.h" + +UINT8 *ssozumo_videoram2; +UINT8 *ssozumo_colorram2; + +static tilemap *bg_tilemap, *fg_tilemap; + +/**************************************************************************/ + +PALETTE_INIT( ssozumo ) +{ + int bit0, bit1, bit2, bit3, r, g, b; + int i; + + for (i = 0 ; i < 64 ; i++) + { + bit0 = (color_prom[0] >> 0) & 0x01; + bit1 = (color_prom[0] >> 1) & 0x01; + bit2 = (color_prom[0] >> 2) & 0x01; + bit3 = (color_prom[0] >> 3) & 0x01; + r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; + bit0 = (color_prom[0] >> 4) & 0x01; + bit1 = (color_prom[0] >> 5) & 0x01; + bit2 = (color_prom[0] >> 6) & 0x01; + bit3 = (color_prom[0] >> 7) & 0x01; + g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; + bit0 = (color_prom[64] >> 0) & 0x01; + bit1 = (color_prom[64] >> 1) & 0x01; + bit2 = (color_prom[64] >> 2) & 0x01; + bit3 = (color_prom[64] >> 3) & 0x01; + b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; + + palette_set_color(machine,i,MAKE_RGB(r,g,b)); + color_prom++; + } +} + +WRITE8_HANDLER( ssozumo_videoram_w ) +{ + videoram[offset] = data; + tilemap_mark_tile_dirty(bg_tilemap, offset); +} + +WRITE8_HANDLER( ssozumo_colorram_w ) +{ + colorram[offset] = data; + tilemap_mark_tile_dirty(bg_tilemap, offset); +} + +WRITE8_HANDLER( ssozumo_videoram2_w ) +{ + ssozumo_videoram2[offset] = data; + tilemap_mark_tile_dirty(fg_tilemap, offset); +} + +WRITE8_HANDLER( ssozumo_colorram2_w ) +{ + ssozumo_colorram2[offset] = data; + tilemap_mark_tile_dirty(fg_tilemap, offset); +} + +WRITE8_HANDLER( ssozumo_paletteram_w ) +{ + int bit0, bit1, bit2, bit3, val; + int r, g, b; + int offs2; + + paletteram[offset] = data; + offs2 = offset & 0x0f; + + val = paletteram[offs2]; + bit0 = (val >> 0) & 0x01; + bit1 = (val >> 1) & 0x01; + bit2 = (val >> 2) & 0x01; + bit3 = (val >> 3) & 0x01; + r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; + + val = paletteram[offs2 | 0x10]; + bit0 = (val >> 0) & 0x01; + bit1 = (val >> 1) & 0x01; + bit2 = (val >> 2) & 0x01; + bit3 = (val >> 3) & 0x01; + g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; + + val = paletteram[offs2 | 0x20]; + bit0 = (val >> 0) & 0x01; + bit1 = (val >> 1) & 0x01; + bit2 = (val >> 2) & 0x01; + bit3 = (val >> 3) & 0x01; + b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; + + palette_set_color(Machine, offs2 + 64, MAKE_RGB(r, g, b)); +} + +WRITE8_HANDLER( ssozumo_scroll_w ) +{ + tilemap_set_scrolly(bg_tilemap, 0, data); +} + +WRITE8_HANDLER( ssozumo_flipscreen_w ) +{ + flip_screen_set(data & 0x80); +} + +static TILE_GET_INFO( get_bg_tile_info ) +{ + int code = videoram[tile_index] + ((colorram[tile_index] & 0x08) << 5); + int color = (colorram[tile_index] & 0x30) >> 4; + int flags = ((tile_index % 32) >= 16) ? TILE_FLIPY : 0; + + SET_TILE_INFO(1, code, color, flags); +} + +static TILE_GET_INFO( get_fg_tile_info ) +{ + int code = ssozumo_videoram2[tile_index] + 256 * (ssozumo_colorram2[tile_index] & 0x07); + int color = (ssozumo_colorram2[tile_index] & 0x30) >> 4; + + SET_TILE_INFO(0, code, color, 0); +} + +VIDEO_START( ssozumo ) +{ + bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_cols_flip_x, + TILEMAP_TYPE_PEN, 16, 16, 16, 32); + + fg_tilemap = tilemap_create(get_fg_tile_info, tilemap_scan_cols_flip_x, + 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 = 0; offs < spriteram_size; offs += 4) + { + if (spriteram[offs] & 0x01) + { + int code = spriteram[offs + 1] + ((spriteram[offs] & 0xf0) << 4); + int color = (spriteram[offs] & 0x08) >> 3; + int flipx = spriteram[offs] & 0x04; + int flipy = spriteram[offs] & 0x02; + int sx = 239 - spriteram[offs + 3]; + int sy = (240 - spriteram[offs + 2]) & 0xff; + + if (flip_screen) + { + sx = 240 - sx; + sy = 240 - sy; + flipx = !flipx; + flipy = !flipy; + } + + drawgfx(bitmap, machine->gfx[2], + code, color, + flipx, flipy, + sx, sy, + cliprect, + TRANSPARENCY_PEN, 0); + } + } +} + +VIDEO_UPDATE( ssozumo ) +{ + tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0); + tilemap_draw(bitmap, cliprect, fg_tilemap, 0, 0); + draw_sprites(machine, bitmap, cliprect); + return 0; +} |