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Add half-tile margin when horizontally splitting viewport drawing region

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Jonathan G Rennison
2020-04-18 23:34:46 +01:00
parent e0902c93a4
commit 4b374cb84a
1 changed files with 4 additions and 3 deletions
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7
src/viewport.cpp
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@@ -3013,9 +3013,10 @@ static void ViewportProcessParentSprites()
const int orig_width = _cur_dpi->width;
const int orig_left = _cur_dpi->left;
_cur_dpi->width = (orig_width / 2) & ScaleByZoom(-1, _cur_dpi->zoom);
int split = _cur_dpi->left + _cur_dpi->width;
const int margin = UnScaleByZoom(128, _cur_dpi->zoom); // Half tile (1 column) margin either side of split
const int split = _cur_dpi->left + _cur_dpi->width;
for (ParentSpriteToDraw *psd : all_sprites) {
if (psd->left < split) _vd.parent_sprites_to_sort.push_back(psd);
if (psd->left < split + margin) _vd.parent_sprites_to_sort.push_back(psd);
}
ViewportProcessParentSprites();
_vd.parent_sprites_to_sort.clear();
@@ -3027,7 +3028,7 @@ static void ViewportProcessParentSprites()
for (ParentSpriteToDraw *psd : all_sprites) {
psd->SetComparisonDone(false);
if (psd->left + psd->width > _cur_dpi->left) {
if (psd->left + psd->width > _cur_dpi->left - margin) {
_vd.parent_sprites_to_sort.push_back(psd);
}
}