UINT32 lbeach_state::screen_update_lbeach(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
// draw bg layer (road)
m_bg_tilemap->set_scrolly(0, *m_scroll_y);
m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
// check collision
int sprite_code = *m_sprite_code & 0xf;
int sprite_x = *m_sprite_x * 2 - 4;
int sprite_y = 160;
m_colmap_car.fill(0, cliprect);
m_gfxdecode->gfx(2)->transpen(m_palette,m_colmap_car,cliprect, sprite_code, 0, 0, 0, sprite_x, sprite_y, 0);
bitmap_ind16 &fg_bitmap = m_fg_tilemap->pixmap();
m_collision_bg_car = 0;
m_collision_fg_car = 0;
for (int y = sprite_y; y < (sprite_y + 16); y++)
{
for (int x = sprite_x; x < (sprite_x + 16) && cliprect.contains(x, y); x++)
{
m_collision_bg_car |= (bitmap.pix16(y, x) & m_colmap_car.pix16(y, x) & 1);
m_collision_fg_car |= (fg_bitmap.pix16(y, x) & m_colmap_car.pix16(y, x) & 1);
}
}
// draw fg layer (tiles)
m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
// draw player car
m_gfxdecode->gfx(2)->transpen(m_palette,bitmap,cliprect, sprite_code, 0, 0, 0, sprite_x, sprite_y, 0);
return 0;
}
