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only move cursor when needed

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2025-07-12 09:12:08 -04:00
parent 75e147f511
commit 78d6209818
1 changed files with 20 additions and 17 deletions
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37
src/Aquarium.cpp
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@@ -280,35 +280,38 @@ void Aquarium::initColorLookup() {
void Aquarium::renderToScreen() { void Aquarium::renderToScreen() {
static std::string output; static std::string output;
output.clear(); output.clear();
output.reserve(height * width * 20); // Reserve space for efficiency output.reserve(height * width * 20);
int cursor_y = -1, cursor_x = -1;
for (int y = 0; y < height; ++y) { for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x) { for (int x = 0; x < width; ++x) {
const Cell &newCell = currentFrame[y][x]; const Cell &newCell = currentFrame[y][x];
Cell &oldCell = previousFrame[y][x]; Cell &oldCell = previousFrame[y][x];
if (newCell != oldCell) { if (newCell == oldCell)
oldCell = newCell; continue;
// Move cursor to position oldCell = newCell;
// Move cursor only when needed
if (cursor_y != y || cursor_x != x) {
output += ANSI::moveTo(y, x); output += ANSI::moveTo(y, x);
cursor_y = y;
// Reset cell cursor_x = x;
output += ANSI::RESET_BLACK_BG;
// Set color and attributes
if (newCell.bold) {
output += ANSI::BOLD;
}
output += colorLookup[static_cast<unsigned char>(newCell.colorChar)];
// Add the character
output += newCell.ch;
} }
// Apply cell formatting and character
output += ANSI::RESET_BLACK_BG;
if (newCell.bold)
output += ANSI::BOLD;
output += colorLookup[static_cast<unsigned char>(newCell.colorChar)];
output += newCell.ch;
++cursor_x;
} }
} }
// Output everything at once
if (!output.empty()) { if (!output.empty()) {
std::cout << output << std::flush; std::cout << output << std::flush;
} }