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Diffstat (limited to 'src/mame/video/bogeyman.c')
-rw-r--r--src/mame/video/bogeyman.c155
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;
+}