void cave_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh)
{
int pri;
int layers_ctrl = -1;
int glob_flipx = READ_WORD(&cave_videoregs[0]) & 0x8000;
int glob_flipy = READ_WORD(&cave_videoregs[2]) & 0x8000;
tilemap_set_flip(ALL_TILEMAPS, (glob_flipx ? TILEMAP_FLIPX : 0) | (glob_flipy ? TILEMAP_FLIPY : 0) );
tilemap_set_enable( tilemap_0, READ_WORD(&cave_vctrl_0[4]) & 1 );
tilemap_set_scrollx(tilemap_0, 0, READ_WORD(&cave_vctrl_0[0]) );
tilemap_set_scrolly(tilemap_0, 0, READ_WORD(&cave_vctrl_0[2]) );
if (tilemap_1)
{
tilemap_set_enable( tilemap_1, READ_WORD(&cave_vctrl_1[4]) & 1 );
tilemap_set_scrollx(tilemap_1, 0, READ_WORD(&cave_vctrl_1[0]) );
tilemap_set_scrolly(tilemap_1, 0, READ_WORD(&cave_vctrl_1[2]) );
}
if (tilemap_2)
{
tilemap_set_enable( tilemap_2, READ_WORD(&cave_vctrl_2[4]) & 1 );
tilemap_set_scrollx(tilemap_2, 0, READ_WORD(&cave_vctrl_2[0]) );
tilemap_set_scrolly(tilemap_2, 0, READ_WORD(&cave_vctrl_2[2]) );
}
tilemap_update(ALL_TILEMAPS);
palette_init_used_colors();
get_sprite_info();
sprite_update();
if (palette_recalc()) tilemap_mark_all_pixels_dirty(ALL_TILEMAPS);
tilemap_render(ALL_TILEMAPS);
/* Clear the background if at least one of layer 0's tile priorities
is lacking */
if ((layers_ctrl & 0xf) != 0xf) osd_clearbitmap(Machine->scrbitmap);
/* Pen 0 of layer 0's tiles (any priority) goes below anything else */
for ( pri = 0; pri < 4; pri++ )
if ((layers_ctrl&(1<<(pri+0)))&&tilemap_0) tilemap_draw(bitmap, tilemap_0, TILEMAP_IGNORE_TRANSPARENCY | pri);
/* Draw the rest with transparency */
for ( pri = 0; pri < 4; pri++ )
{
if ((layers_ctrl&(1<<(pri+12)))) sprite_draw(sprite_list, pri);
if ((layers_ctrl&(1<<(pri+0)))&&tilemap_0) tilemap_draw(bitmap, tilemap_0, pri);
if ((layers_ctrl&(1<<(pri+4)))&&tilemap_1) tilemap_draw(bitmap, tilemap_1, pri);
if ((layers_ctrl&(1<<(pri+8)))&&tilemap_2) tilemap_draw(bitmap, tilemap_2, pri);
}
}
void twincobr_display(int enable)
{
twincobr_display_on = enable;
tilemap_set_enable(bg_tilemap, enable);
tilemap_set_enable(fg_tilemap, enable);
tilemap_set_enable(tx_tilemap, enable);
}
static void bg_ctrl(int offset, int data, tilemap_t* tilemap)
{
int scrollx = tilemap_get_scrollx(tilemap, 0);
int scrolly = tilemap_get_scrolly(tilemap, 0);
switch (offset)
{
case 0: scrollx = ((scrollx & 0x100) | data); break;
case 1: scrollx = ((scrollx & 0x0ff) | (data << 8)); break;
case 2: scrolly = ((scrolly & 0x100) | data); break;
case 3: scrolly = ((scrolly & 0x0ff) | (data << 8)); break;
case 4: tilemap_set_enable(tilemap, data & 1); break;
}
tilemap_set_scrollx(tilemap, 0, scrollx);
tilemap_set_scrolly(tilemap, 0, scrolly);
}
INLINE void dooyong_scroll8_w(offs_t offset, UINT8 data, UINT8 *scroll, tilemap_t *map)
{
UINT8 old = scroll[offset];
if (old != data)
{
scroll[offset] = data;
if (map != NULL) switch (offset)
{
case 0: /* Low byte of x scroll - scroll tilemap */
tilemap_set_scrollx(map, 0, data);
break;
case 1: /* High byte of x scroll - mark tilemap dirty so new tile gfx will be loaded */
tilemap_mark_all_tiles_dirty(map);
break;
case 3: /* Low byte of y scroll */
case 4: /* High byte of y scroll */
tilemap_set_scrolly(map, 0, (int)scroll[3] | ((int)scroll[4] << 8));
break;
case 6: /* Tilemap enable and mode control */
tilemap_set_enable(map, !(data & 0x10));
if ((data & 0x20) != (old & 0x20)) // This sets the tilemap data format
tilemap_mark_all_tiles_dirty(map);
break;
default: /* Other addresses are used but function is unknown */
/* 0x05 and 0x07 are initialised on startup */
/* 0x02 is initialised on startup by some games and written to continuously by others */
/*{
const char *name;
if (scroll == state->bgscroll8) name = "bg";
else if (scroll == state->bg2scroll8) name = "bg2";
else if (scroll == state->fgscroll8) name = "fg";
else if (scroll == state->fg2scroll8) name = "fg2";
else name = "unknown";
printf("Unknown %s tilemap control: 0x%02x = 0x%02x\n", name, (unsigned)offset, (unsigned)data);
}*/
break;
}
}
}
