void galaxian_state::video_start()
{
/* create a tilemap for the background */
if (!m_sfx_tilemap)
{
/* normal galaxian hardware is row-based and individually scrolling columns */
m_bg_tilemap = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(galaxian_state::bg_get_tile_info),this), TILEMAP_SCAN_ROWS, GALAXIAN_XSCALE*8,8, 32,32);
m_bg_tilemap->set_scroll_cols(32);
}
else
{
/* sfx hardware is column-based and individually scrolling rows */
m_bg_tilemap = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(galaxian_state::bg_get_tile_info),this), TILEMAP_SCAN_COLS, GALAXIAN_XSCALE*8,8, 32,32);
m_bg_tilemap->set_scroll_rows(32);
}
m_bg_tilemap->set_transparent_pen(0);
/* initialize globals */
m_flipscreen_x = 0;
m_flipscreen_y = 0;
m_background_enable = 0;
m_background_blue = 0;
m_background_red = 0;
m_background_green = 0;
/* initialize stars */
stars_init();
/* register for save states */
state_save_register();
}
void stars_draw ( )
{
u8 i;
vobject_add ( ESTRELLITA1 );
vobject_add ( ESTRELLITA2 );
vobject_add ( ESTRELLITA3 );
vobject_add ( ESTRELLITA4 );
Vect2D_s16 posiciones =
{
vdpSpriteCache[splist_griel].x - 4-128,
vdpSpriteCache[splist_griel].y + 2-128
};
s16 x = posiciones.x;
s16 y = posiciones.y;
vsprite_set ( sprites[0] = 71, x-12, y-12, ESTRELLITA1 );
vsprite_set ( sprites[1] = 72, x+12, y-12, ESTRELLITA2 );
vsprite_set ( sprites[2] = 73, x-12, y+12, ESTRELLITA3 );
vsprite_set ( sprites[3] = 74, x+12, y+12, ESTRELLITA4 );
u16 duracion = animation_duracion(ESTRELLITA1);
while ( duracion-- )
{
if ( duracion % 4 == 0 )
{
_freeze_objects();
}
vobject_update();
vobject_upload ( );
VDP_updateSprites(80,1);
VDP_waitVSync();
}
vobject_delete ( ESTRELLITA1 );
vobject_delete ( ESTRELLITA2 );
vobject_delete ( ESTRELLITA3 );
vobject_delete ( ESTRELLITA4 );
for ( i=0; i<STARTS_SPRITES; i++ )
{
u8 sprite = sprites [ i ] ;
splist_hide_sprite ( sprite );
vsprite_animation ( sprite, EMPTY_SPRITE );
sd_delete ( sprite );
}
stars_init ();
}
