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feat: add Low Health Vignette toggle in Settings > Interface

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The persistent red-edge vignette (below 20% HP) now has an on/off
checkbox under Settings > Interface > Screen Effects, alongside the
existing Damage Flash toggle. The preference is persisted to settings.cfg.
This commit is contained in:
Kelsi 2026-03-12 07:15:08 -07:00
parent 8cba8033ba
commit 9a08edae09
2 changed files with 11 additions and 1 deletions
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1
include/ui/game_screen.hpp
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@ -83,6 +83,7 @@ private:
uint32_t lastPlayerHp_ = 0; // Previous frame HP for damage flash detection uint32_t lastPlayerHp_ = 0; // Previous frame HP for damage flash detection
float damageFlashAlpha_ = 0.0f; // Screen edge flash intensity (fades to 0) float damageFlashAlpha_ = 0.0f; // Screen edge flash intensity (fades to 0)
bool damageFlashEnabled_ = true; bool damageFlashEnabled_ = true;
bool lowHealthVignetteEnabled_ = true; // Persistent pulsing red vignette below 20% HP
float levelUpFlashAlpha_ = 0.0f; // Golden level-up burst effect (fades to 0) float levelUpFlashAlpha_ = 0.0f; // Golden level-up burst effect (fades to 0)
uint32_t levelUpDisplayLevel_ = 0; // Level shown in level-up text uint32_t levelUpDisplayLevel_ = 0; // Level shown in level-up text

11
src/ui/game_screen.cpp
View file

@ -787,7 +787,7 @@ void GameScreen::render(game::GameHandler& gameHandler) {
} }
// Only show when alive and below 20% HP; intensity increases as HP drops // Only show when alive and below 20% HP; intensity increases as HP drops
if (!isDead && hpPct < 0.20f && hpPct > 0.0f) { if (lowHealthVignetteEnabled_ && !isDead && hpPct < 0.20f && hpPct > 0.0f) {
// Base intensity from HP deficit (0 at 20%, 1 at 0%); pulse at ~1.5 Hz // Base intensity from HP deficit (0 at 20%, 1 at 0%); pulse at ~1.5 Hz
float danger = (0.20f - hpPct) / 0.20f; float danger = (0.20f - hpPct) / 0.20f;
float pulse = 0.55f + 0.45f * std::sin(static_cast<float>(ImGui::GetTime()) * 9.4f); float pulse = 0.55f + 0.45f * std::sin(static_cast<float>(ImGui::GetTime()) * 9.4f);
@ -12021,6 +12021,12 @@ void GameScreen::renderSettingsWindow() {
ImGui::SameLine(); ImGui::SameLine();
ImGui::TextDisabled("(red vignette on taking damage)"); ImGui::TextDisabled("(red vignette on taking damage)");
if (ImGui::Checkbox("Low Health Vignette", &lowHealthVignetteEnabled_)) {
saveSettings();
}
ImGui::SameLine();
ImGui::TextDisabled("(pulsing red edges below 20%% HP)");
ImGui::EndChild(); ImGui::EndChild();
ImGui::EndTabItem(); ImGui::EndTabItem();
} }
@ -13841,6 +13847,7 @@ void GameScreen::saveSettings() {
out << "right_bar_offset_y=" << pendingRightBarOffsetY << "\n"; out << "right_bar_offset_y=" << pendingRightBarOffsetY << "\n";
out << "left_bar_offset_y=" << pendingLeftBarOffsetY << "\n"; out << "left_bar_offset_y=" << pendingLeftBarOffsetY << "\n";
out << "damage_flash=" << (damageFlashEnabled_ ? 1 : 0) << "\n"; out << "damage_flash=" << (damageFlashEnabled_ ? 1 : 0) << "\n";
out << "low_health_vignette=" << (lowHealthVignetteEnabled_ ? 1 : 0) << "\n";
// Audio // Audio
out << "sound_muted=" << (soundMuted_ ? 1 : 0) << "\n"; out << "sound_muted=" << (soundMuted_ ? 1 : 0) << "\n";
@ -13962,6 +13969,8 @@ void GameScreen::loadSettings() {
pendingLeftBarOffsetY = std::clamp(std::stof(val), -400.0f, 400.0f); pendingLeftBarOffsetY = std::clamp(std::stof(val), -400.0f, 400.0f);
} else if (key == "damage_flash") { } else if (key == "damage_flash") {
damageFlashEnabled_ = (std::stoi(val) != 0); damageFlashEnabled_ = (std::stoi(val) != 0);
} else if (key == "low_health_vignette") {
lowHealthVignetteEnabled_ = (std::stoi(val) != 0);
} }
// Audio // Audio
else if (key == "sound_muted") { else if (key == "sound_muted") {