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feat: add screenshot capture (PrintScreen key and /screenshot command)

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Captures the Vulkan swapchain image to PNG via stb_image_write.
Screenshots saved to ~/.wowee/screenshots/ with timestamped filenames.
Cross-platform: BGRA→RGBA swizzle, localtime_r/localtime_s.
This commit is contained in:
Kelsi 2026-03-18 10:47:34 -07:00
parent a417a00d3a
commit 2dc5b21341
4 changed files with 152 additions and 1 deletions
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50
src/ui/game_screen.cpp
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@ -2809,6 +2809,11 @@ void GameScreen::processTargetInput(game::GameHandler& gameHandler) {
showTitlesWindow_ = !showTitlesWindow_;
}
// Screenshot (PrintScreen key)
if (input.isKeyJustPressed(SDL_SCANCODE_PRINTSCREEN)) {
takeScreenshot(gameHandler);
}
// Action bar keys (1-9, 0, -, =)
static const SDL_Scancode actionBarKeys[] = {
SDL_SCANCODE_1, SDL_SCANCODE_2, SDL_SCANCODE_3, SDL_SCANCODE_4,
@ -5899,6 +5904,13 @@ void GameScreen::sendChatMessage(game::GameHandler& gameHandler) {
return;
}
// /screenshot command — capture current frame to PNG
if (cmdLower == "screenshot" || cmdLower == "ss") {
takeScreenshot(gameHandler);
chatInputBuffer[0] = '\0';
return;
}
// /zone command — print current zone name
if (cmdLower == "zone") {
std::string zoneName;
@ -5978,7 +5990,7 @@ void GameScreen::sendChatMessage(game::GameHandler& gameHandler) {
"Movement: /sit /stand /kneel /dismount",
"Misc: /played /time /zone /loc /afk [msg] /dnd [msg] /inspect",
" /helm /cloak /trade /join <channel> /leave <channel>",
" /score /unstuck /logout /ticket /help",
" /score /unstuck /logout /ticket /screenshot /help",
};
for (const char* line : kHelpLines) {
game::MessageChatData helpMsg;
@ -12160,6 +12172,42 @@ void GameScreen::renderPartyFrames(game::GameHandler& gameHandler) {
// Durability Warning (equipment damage indicator)
// ============================================================
void GameScreen::takeScreenshot(game::GameHandler& /*gameHandler*/) {
auto* renderer = core::Application::getInstance().getRenderer();
if (!renderer) return;
// Build path: ~/.wowee/screenshots/WoWee_YYYYMMDD_HHMMSS.png
const char* home = std::getenv("HOME");
if (!home) home = std::getenv("USERPROFILE");
if (!home) home = "/tmp";
std::string dir = std::string(home) + "/.wowee/screenshots";
auto now = std::chrono::system_clock::now();
auto tt = std::chrono::system_clock::to_time_t(now);
std::tm tm{};
#ifdef _WIN32
localtime_s(&tm, &tt);
#else
localtime_r(&tt, &tm);
#endif
char filename[128];
std::snprintf(filename, sizeof(filename),
"WoWee_%04d%02d%02d_%02d%02d%02d.png",
tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
tm.tm_hour, tm.tm_min, tm.tm_sec);
std::string path = dir + "/" + filename;
if (renderer->captureScreenshot(path)) {
game::MessageChatData sysMsg;
sysMsg.type = game::ChatType::SYSTEM;
sysMsg.language = game::ChatLanguage::UNIVERSAL;
sysMsg.message = "Screenshot saved: " + path;
core::Application::getInstance().getGameHandler()->addLocalChatMessage(sysMsg);
}
}
void GameScreen::renderDurabilityWarning(game::GameHandler& gameHandler) {
if (gameHandler.getPlayerGuid() == 0) return;