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feat: track and visualize global cooldown (GCD) on action bar

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- GameHandler tracks GCD in gcdTotal_/gcdStartedAt_ (time-based)
- SMSG_SPELL_COOLDOWN: spellId=0 entries (<=2s) are treated as GCD
- castSpell(): optimistically starts 1.5s GCD client-side on cast
- Action bar: non-cooldown slots show subtle dark sweep + dim tint
  during the GCD window, matching WoW standard behavior
This commit is contained in:
Kelsi 2026-03-12 05:38:13 -07:00
parent 61c0b91e39
commit b6a43d6ce7
3 changed files with 58 additions and 0 deletions
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31
src/ui/game_screen.cpp
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@ -4952,6 +4952,7 @@ void GameScreen::renderActionBar(game::GameHandler& gameHandler) {
const auto& slot = bar[absSlot];
bool onCooldown = !slot.isReady();
const bool onGCD = gameHandler.isGCDActive() && !onCooldown && !slot.isEmpty();
auto getSpellName = [&](uint32_t spellId) -> std::string {
std::string name = spellbookScreen.lookupSpellName(spellId, assetMgr);
@ -5004,6 +5005,7 @@ void GameScreen::renderActionBar(game::GameHandler& gameHandler) {
ImVec4 tintColor(1, 1, 1, 1);
ImVec4 bgColor(0.1f, 0.1f, 0.1f, 0.9f);
if (onCooldown) { tintColor = ImVec4(0.4f, 0.4f, 0.4f, 0.8f); }
else if (onGCD) { tintColor = ImVec4(0.6f, 0.6f, 0.6f, 0.85f); }
clicked = ImGui::ImageButton("##icon",
(ImTextureID)(uintptr_t)iconTex,
ImVec2(slotSize, slotSize),
@ -5188,6 +5190,35 @@ void GameScreen::renderActionBar(game::GameHandler& gameHandler) {
dl->AddText(ImVec2(tx, ty), IM_COL32(255, 255, 255, 255), cdText);
}
// GCD overlay — subtle dark fan sweep (thinner/lighter than regular cooldown)
if (onGCD) {
ImVec2 btnMin = ImGui::GetItemRectMin();
ImVec2 btnMax = ImGui::GetItemRectMax();
float cx = (btnMin.x + btnMax.x) * 0.5f;
float cy = (btnMin.y + btnMax.y) * 0.5f;
float r = (btnMax.x - btnMin.x) * 0.5f;
auto* dl = ImGui::GetWindowDrawList();
float gcdRem = gameHandler.getGCDRemaining();
float gcdTotal = gameHandler.getGCDTotal();
if (gcdTotal > 0.0f) {
float elapsed = gcdTotal - gcdRem;
float elapsedFrac = std::min(1.0f, std::max(0.0f, elapsed / gcdTotal));
if (elapsedFrac > 0.005f) {
constexpr int N_SEGS = 24;
float startAngle = -IM_PI * 0.5f;
float endAngle = startAngle + elapsedFrac * 2.0f * IM_PI;
float fanR = r * 1.4f;
ImVec2 pts[N_SEGS + 2];
pts[0] = ImVec2(cx, cy);
for (int s = 0; s <= N_SEGS; ++s) {
float a = startAngle + (endAngle - startAngle) * s / static_cast<float>(N_SEGS);
pts[s + 1] = ImVec2(cx + std::cos(a) * fanR, cy + std::sin(a) * fanR);
}
dl->AddConvexPolyFilled(pts, N_SEGS + 2, IM_COL32(0, 0, 0, 110));
}
}
}
// Item stack count overlay — bottom-right corner of icon
if (slot.type == game::ActionBarSlot::ITEM && slot.id != 0) {
// Count total of this item across all inventory slots