/*************************************
*
* Main refresh
*
*************************************/
uint32_t screen_update_atarisy2(screen_device screen, bitmap_ind16 bitmap, rectangle cliprect)
{
// start drawing
m_mob.op0.draw_async(cliprect);
// reset priorities
bitmap_ind8 priority_bitmap = screen.priority();
priority_bitmap.fill(0, cliprect);
// draw the playfield
m_playfield_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 0, 0);
m_playfield_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 1, 1);
m_playfield_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 2, 2);
m_playfield_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 3, 3);
// draw and merge the MO
bitmap_ind16 mobitmap = m_mob.op0.bitmap();
for (sparse_dirty_rect rect = m_mob.op0.first_dirty_rect(cliprect); rect != null; rect = rect.next())
{
for (int y = rect.m_rect.top(); y <= rect.m_rect.bottom(); y++)
{
PointerU16 mo = mobitmap.pix(y); //uint16_t const *const mo = &mobitmap.pix(y);
PointerU16 pf = bitmap.pix(y); //uint16_t *const pf = &bitmap.pix(y);
PointerU8 pri = priority_bitmap.pix(y); //uint8_t const *const pri = &priority_bitmap.pix(y);
for (int x = rect.m_rect.left(); x <= rect.m_rect.right(); x++)
{
if (mo[x] != 0xffff)
{
int mopriority = mo[x] >> atari_motion_objects_device.PRIORITY_SHIFT;
// high priority PF?
if (((mopriority + pri[x]) & 2) != 0)
{
// only gets priority if PF pen is less than 8
if ((pf[x] & 0x08) == 0)
{
pf[x] = (uint16_t)(mo[x] & atari_motion_objects_device.DATA_MASK);
}
}
// low priority
else
{
pf[x] = (uint16_t)(mo[x] & atari_motion_objects_device.DATA_MASK);
}
}
}
}
}
// add the alpha on top
m_alpha_tilemap.op0.tilemap.draw(screen, bitmap, cliprect, 0, 0);
return(0);
}
} //void set_spriteram(_SpriteRAMType *base, uint32_t bytes) { assert(base != nullptr && bytes != 0); m_spriteram = base; m_spriteram_bytes = bytes; m_buffer.resize(m_spriteram_bytes / sizeof(_SpriteRAMType)); }
//void set_origin(int32_t xorigin = 0, int32_t yorigin = 0) { m_xorigin = xorigin; m_yorigin = yorigin; }
//void set_xorigin(int32_t xorigin) { m_xorigin = xorigin; }
//void set_yorigin(int32_t yorigin) { m_yorigin = yorigin; }
// buffering
//void copy_to_buffer() { assert(m_spriteram != nullptr); memcpy(m_buffer, m_spriteram, m_spriteram_bytes); }
// clearing
//void clear() { clear(m_bitmap.cliprect()); }
void clear(rectangle cliprect)
{
for (sparse_dirty_rect rect = m_dirty.first_dirty_rect(cliprect); rect != null; rect = rect.next())
{
m_bitmap.fill(~0U, rect.m_rect);
}
m_dirty.clean(cliprect);
}
