Create files from Grasscutter-Quests

these files are NOT directly compatible with Grasscutter, and require additional modifications to the codebase to work.

src/main/java/emu/grasscutter/game/activity/condition/AllActivityConditionBuilder.java

@@ -0,0 +1,60 @@
+package emu.grasscutter.game.activity.condition;
+
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.data.excels.ActivityCondExcelConfigData;
+import emu.grasscutter.game.quest.handlers.QuestBaseHandler;
+import org.reflections.Reflections;
+
+import java.util.AbstractMap;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * Class that used for scanning classpath, picking up all activity conditions (for NewActivityCondExcelConfigData.json {@link ActivityCondExcelConfigData})
+ * and saving them to map. Check for more info {@link ActivityCondition}
+ */
+public class AllActivityConditionBuilder {
+
+    /**
+     * Build activity conditions handlers
+     *
+     * @return map containing all condition handlers for NewActivityCondExcelConfigData.json
+     */
+    static public Map<ActivityConditions, ActivityConditionBaseHandler> buildActivityConditions() {
+        return new AllActivityConditionBuilder().initActivityConditions();
+    }
+
+    private Map<ActivityConditions, ActivityConditionBaseHandler> initActivityConditions() {
+        Reflections reflector = Grasscutter.reflector;
+        return reflector.getTypesAnnotatedWith(ActivityCondition.class).stream()
+            .map(this::newInstance)
+            .map(h -> new AbstractMap.SimpleEntry<>(extractActionType(h), h))
+            .collect(Collectors.toMap(AbstractMap.SimpleEntry::getKey, AbstractMap.SimpleEntry::getValue));
+    }
+
+    private ActivityConditions extractActionType(ActivityConditionBaseHandler e) {
+        ActivityCondition condition = e.getClass().getAnnotation(ActivityCondition.class);
+        if (condition == null) {
+            Grasscutter.getLogger().error("Failed to read command type for class {}", e.getClass().getName());
+            return null;
+        }
+
+        return condition.value();
+    }
+
+    private ActivityConditionBaseHandler newInstance(Class<?> clazz) {
+        try {
+            Object result = clazz.getDeclaredConstructor().newInstance();
+            if (result instanceof ActivityConditionBaseHandler) {
+                return (ActivityConditionBaseHandler) result;
+            }
+            Grasscutter.getLogger().error("Failed to initiate activity condition: {}, object have wrong type", clazz.getName());
+        } catch (Exception e) {
+            String message = String.format("Failed to initiate activity condition: %s, %s", clazz.getName(), e.getMessage());
+            Grasscutter.getLogger().error(message, e);
+        }
+        return null;
+    }
+
+
+}