drinkingtea/nostalgia
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[nostalgia/core/studio] Fix DrawCommand not to allow appending of duplicates

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This commit is contained in:
Gary Talent 2022-02-13 23:46:45 -06:00
parent 95f3c5b62a
commit 0e041a666a
2 changed files with 10 additions and 4 deletions
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2
src/nostalgia/core/studio/tilesheeteditormodel.cpp
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@ -19,7 +19,6 @@ void TileSheetEditorModel::draw(const geo::Point &pt, std::size_t palIdx) noexce
m_updated = m_ongoingDrawCommand->append(ptToIdx(pt, m_img.columns));
} else {
pushCommand(new DrawCommand(&m_img, ptToIdx(pt, m_img.columns), palIdx));
m_updated = true;
}
}
@ -70,6 +69,7 @@ void TileSheetEditorModel::getFillPixels(bool *pixels, const geo::Point &pt, int
void TileSheetEditorModel::pushCommand(studio::UndoCommand *cmd) noexcept {
m_undoStack.push(cmd);
m_ongoingDrawCommand = dynamic_cast<DrawCommand*>(cmd);
m_updated = true;
}
}

12
src/nostalgia/core/studio/tilesheeteditormodel.hpp
View File

@ -68,9 +68,15 @@ struct DrawCommand: public studio::UndoCommand {
constexpr bool append(std::size_t idx) noexcept {
if (m_changes.back().value.idx != idx) {
m_changes.emplace_back(idx, m_img->pixels[idx]);
m_img->setPixel(idx, m_palIdx);
return true;
// duplicate entries are bad
auto existing = std::find_if(m_changes.cbegin(), m_changes.cend(), [idx](const auto &c) {
return c.idx == idx;
});
if (existing == m_changes.cend()) {
m_changes.emplace_back(idx, m_img->pixels[idx]);
m_img->setPixel(idx, m_palIdx);
return true;
}
}
return false;
}