diff options
Diffstat (limited to 'src/mame/video/bogeyman.c')
-rw-r--r-- | src/mame/video/bogeyman.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/mame/video/bogeyman.c b/src/mame/video/bogeyman.c new file mode 100644 index 00000000000..a649518219c --- /dev/null +++ b/src/mame/video/bogeyman.c @@ -0,0 +1,155 @@ +#include "driver.h" + +UINT8 *bogeyman_videoram2, *bogeyman_colorram2; + +static tilemap *bg_tilemap, *fg_tilemap; + +PALETTE_INIT( bogeyman ) +{ + int i; + + /* first 16 colors are RAM */ + + for (i = 0;i < 256;i++) + { + int bit0,bit1,bit2,r,g,b; + + /* red component */ + bit0 = (color_prom[0] >> 0) & 0x01; + bit1 = (color_prom[0] >> 1) & 0x01; + bit2 = (color_prom[0] >> 2) & 0x01; + r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; + + /* green component */ + bit0 = (color_prom[0] >> 3) & 0x01; + bit1 = (color_prom[256] >> 0) & 0x01; + bit2 = (color_prom[256] >> 1) & 0x01; + g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; + + /* blue component */ + bit0 = 0; + bit1 = (color_prom[256] >> 2) & 0x01; + bit2 = (color_prom[256] >> 3) & 0x01; + b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; + + palette_set_color(machine,i+16,MAKE_RGB(r,g,b)); + color_prom++; + } +} + +WRITE8_HANDLER( bogeyman_videoram_w ) +{ + videoram[offset] = data; + tilemap_mark_tile_dirty(bg_tilemap, offset); +} + +WRITE8_HANDLER( bogeyman_colorram_w ) +{ + colorram[offset] = data; + tilemap_mark_tile_dirty(bg_tilemap, offset); +} + +WRITE8_HANDLER( bogeyman_videoram2_w ) +{ + bogeyman_videoram2[offset] = data; + tilemap_mark_tile_dirty(fg_tilemap, offset); +} + +WRITE8_HANDLER( bogeyman_colorram2_w ) +{ + bogeyman_colorram2[offset] = data; + tilemap_mark_tile_dirty(fg_tilemap, offset); +} + +WRITE8_HANDLER( bogeyman_paletteram_w ) +{ + /* RGB output is inverted */ + paletteram_BBGGGRRR_w(offset, ~data); +} + +static TILE_GET_INFO( get_bg_tile_info ) +{ + int attr = colorram[tile_index]; + int gfxbank = ((((attr & 0x01) << 8) + videoram[tile_index]) / 0x80) + 3; + int code = videoram[tile_index] & 0x7f; + int color = (attr >> 1) & 0x07; + + SET_TILE_INFO(gfxbank, code, color, 0); +} + +static TILE_GET_INFO( get_fg_tile_info ) +{ + int attr = bogeyman_colorram2[tile_index]; + int tile = bogeyman_videoram2[tile_index] | ((attr & 0x03) << 8); + int gfxbank = tile / 0x200; + int code = tile & 0x1ff; + + SET_TILE_INFO(gfxbank, code, 0, 0); +} + +VIDEO_START( bogeyman ) +{ + bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_rows, + TILEMAP_TYPE_PEN, 16, 16, 16, 16); + + 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 = 0; offs < spriteram_size; offs += 4) + { + int attr = spriteram[offs]; + + if (attr & 0x01) + { + int code = spriteram[offs + 1] + ((attr & 0x40) << 2); + int color = (attr & 0x08) >> 3; + int flipx = !(attr & 0x04); + int flipy = attr & 0x02; + int sx = spriteram[offs + 3]; + int sy = (240 - spriteram[offs + 2]) & 0xff; + int multi = attr & 0x10; + + if (multi) sy -= 16; + + 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); + + if (multi) + { + drawgfx(bitmap,machine->gfx[2], + code + 1, color, + flipx, flipy, + sx, sy + (flip_screen ? -16 : 16), + cliprect, + TRANSPARENCY_PEN, 0); + } + } + } +} + +VIDEO_UPDATE( bogeyman ) +{ + tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0); + draw_sprites(machine, bitmap, cliprect); + tilemap_draw(bitmap, cliprect, fg_tilemap, 0, 0); + return 0; +} |