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feat: add HP% text and cast bars to nameplates

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- Show health percentage centered on each nameplate health bar
- Show purple cast bar below health bar when a unit is actively casting
- Display spell name (from Spell.dbc cache) above cast bar
- Show time remaining (e.g. "1.4s") centered on cast bar fill
- All elements respect the existing nameplate alpha fade-out at distance
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Kelsi 2026-03-12 03:44:32 -07:00
parent fa947eb9c7
commit 6068d0d68d
1 changed files with 53 additions and 0 deletions
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53
src/ui/game_screen.cpp
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@ -6067,6 +6067,59 @@ void GameScreen::renderNameplates(game::GameHandler& gameHandler) {
}
drawList->AddRect (ImVec2(barX - 1.0f, sy - 1.0f), ImVec2(barX + barW + 1.0f, sy + barH + 1.0f), borderColor, 2.0f);
// HP % text centered on health bar (non-corpse, non-full-health for readability)
if (!isCorpse && unit->getMaxHealth() > 0) {
int hpPct = static_cast<int>(healthPct * 100.0f + 0.5f);
char hpBuf[8];
snprintf(hpBuf, sizeof(hpBuf), "%d%%", hpPct);
ImVec2 hpTextSz = ImGui::CalcTextSize(hpBuf);
float hpTx = sx - hpTextSz.x * 0.5f;
float hpTy = sy + (barH - hpTextSz.y) * 0.5f;
drawList->AddText(ImVec2(hpTx + 1.0f, hpTy + 1.0f), IM_COL32(0, 0, 0, A(140)), hpBuf);
drawList->AddText(ImVec2(hpTx, hpTy), IM_COL32(255, 255, 255, A(200)), hpBuf);
}
// Cast bar below health bar when unit is casting
float castBarBaseY = sy + barH + 2.0f;
{
const auto* cs = gameHandler.getUnitCastState(guid);
if (cs && cs->casting && cs->timeTotal > 0.0f) {
float castPct = std::clamp((cs->timeTotal - cs->timeRemaining) / cs->timeTotal, 0.0f, 1.0f);
const float cbH = 6.0f * nameplateScale_;
// Spell name above the cast bar
const std::string& spellName = gameHandler.getSpellName(cs->spellId);
if (!spellName.empty()) {
ImVec2 snSz = ImGui::CalcTextSize(spellName.c_str());
float snX = sx - snSz.x * 0.5f;
float snY = castBarBaseY;
drawList->AddText(ImVec2(snX + 1.0f, snY + 1.0f), IM_COL32(0, 0, 0, A(140)), spellName.c_str());
drawList->AddText(ImVec2(snX, snY), IM_COL32(255, 210, 100, A(220)), spellName.c_str());
castBarBaseY += snSz.y + 2.0f;
}
// Cast bar background + fill
ImU32 cbBg = IM_COL32(40, 30, 60, A(180));
ImU32 cbFill = IM_COL32(140, 80, 220, A(200)); // purple cast bar
drawList->AddRectFilled(ImVec2(barX, castBarBaseY),
ImVec2(barX + barW, castBarBaseY + cbH), cbBg, 2.0f);
drawList->AddRectFilled(ImVec2(barX, castBarBaseY),
ImVec2(barX + barW * castPct, castBarBaseY + cbH), cbFill, 2.0f);
drawList->AddRect (ImVec2(barX - 1.0f, castBarBaseY - 1.0f),
ImVec2(barX + barW + 1.0f, castBarBaseY + cbH + 1.0f),
IM_COL32(20, 10, 40, A(200)), 2.0f);
// Time remaining text
char timeBuf[12];
snprintf(timeBuf, sizeof(timeBuf), "%.1fs", cs->timeRemaining);
ImVec2 timeSz = ImGui::CalcTextSize(timeBuf);
float timeX = sx - timeSz.x * 0.5f;
float timeY = castBarBaseY + (cbH - timeSz.y) * 0.5f;
drawList->AddText(ImVec2(timeX + 1.0f, timeY + 1.0f), IM_COL32(0, 0, 0, A(140)), timeBuf);
drawList->AddText(ImVec2(timeX, timeY), IM_COL32(220, 200, 255, A(220)), timeBuf);
}
}
// Name + level label above health bar
uint32_t level = unit->getLevel();
const std::string& unitName = unit->getName();