clear single achievement and fix achievement tab moving around

include/dusk/achievements.h

@@ -40,6 +40,7 @@ public:
     void save();
     void tick();
     void clearAll();
+    void clearOne(const char* key);
 
     std::vector<Achievement> getAchievements() const;
     bool hasPendingUnlock() const { return !m_pendingUnlocks.empty(); }

src/dusk/achievements.cpp

@@ -426,6 +426,18 @@ void AchievementSystem::clearAll() {
     save();
 }
 
+void AchievementSystem::clearOne(const char* key) {
+    for (auto& e : m_entries) {
+        if (std::string(e.achievement.key) == key) {
+            e.achievement.progress = 0;
+            e.achievement.unlocked = false;
+            e.extra = {};
+            break;
+        }
+    }
+    save();
+}
+
 void AchievementSystem::processEntry(Entry& e) {
     if (e.achievement.unlocked) {
         return;

src/dusk/imgui/ImGuiAchievements.cpp

@@ -131,7 +131,7 @@ void ImGuiAchievements::draw(bool& open) {
                 continue;
             }
 
-            const std::string tabLabel = fmt::format("{} ({}/{})", catInfo.label, catUnlocked, catTotal);
+            const std::string tabLabel = fmt::format("{} ({}/{})###{}", catInfo.label, catUnlocked, catTotal, catInfo.label);
             
             ImGui::PushStyleColor(ImGuiCol_Text, catInfo.color);
             const bool tabOpen = ImGui::BeginTabItem(tabLabel.c_str());
@@ -152,6 +152,7 @@ void ImGuiAchievements::draw(bool& open) {
                         continue;
                     }
                     ImGui::PushID(a.key);
+                    ImGui::BeginGroup();
 
                     ImGui::PushStyleColor(
                         ImGuiCol_Text,
@@ -190,6 +191,21 @@ void ImGuiAchievements::draw(bool& open) {
                         ImGui::PopStyleColor();
                     }
 
+                    ImGui::EndGroup();
+
+                    if (ImGui::IsItemHovered() && ImGui::IsMouseClicked(ImGuiMouseButton_Right)) {
+                        ImGui::OpenPopup("##ctx");
+                    }
+
+                    if (ImGui::BeginPopup("##ctx")) {
+                        ImGui::TextDisabled("%s", a.name);
+                        ImGui::Separator();
+                        if (ImGui::MenuItem("Clear Achievement")) {
+                            AchievementSystem::get().clearOne(a.key);
+                        }
+                        ImGui::EndPopup();
+                    }
+
                     ImGui::Spacing();
                     ImGui::PopID();
                 }