feat: add group mirror support

src/core/group/group.h

@@ -186,6 +186,12 @@ public:
 
     // ------------------------------------------------------------------------------------- //
 
+    // TODO: add `is_xxx_mirror` interface
+
+    [[nodiscard]] Group to_vertical_mirror() const;
+
+    [[nodiscard]] Group to_horizontal_mirror() const;
+
 private:
     uint32_t type_id_;
     uint32_t group_id_;

src/core/group/internal/constant/group.h

@@ -13,4 +13,12 @@ constexpr auto GROUP_SEED = std::to_array<uint64_t>({
 #include "seeds.inc"
 });
 
+constexpr auto GROUP_MIRROR_H = std::to_array<uint16_t>({
+#include "mirror_h.inc"
+});
+
+constexpr auto GROUP_MIRROR_V = std::to_array<uint16_t>({
+#include "mirror_v.inc"
+});
+
 } // namespace klotski::cases

src/core/group/internal/group.inl

@@ -24,6 +24,16 @@ constexpr uint32_t Group::flat_id() const {
 
 // ----------------------------------------------------------------------------------------- //
 
+Group Group::to_vertical_mirror() const {
+    return Group::unsafe_create(type_id_, GROUP_MIRROR_V[flat_id()]);
+}
+
+Group Group::to_horizontal_mirror() const {
+    return Group::unsafe_create(type_id_, GROUP_MIRROR_H[flat_id()]);
+}
+
+// ----------------------------------------------------------------------------------------- //
+
 inline Group Group::from_common_code(codec::CommonCode common_code) {
     return from_raw_code(common_code.to_raw_code());
 }

src/core/main.cc

@@ -30,6 +30,7 @@ using klotski::cases::Group;
 using klotski::cases::GroupCases;
 using klotski::cases::GroupUnion;
 
+using klotski::cases::TYPE_ID_LIMIT;
 using klotski::codec::SHORT_CODE_LIMIT;
 
 int main() {
@@ -43,13 +44,18 @@ int main() {
 //    const auto common_code = CommonCode::unsafe_create(0x1A9BF0C00);
 //    const auto group = Group::from_common_code(common_code);
 
-    GroupCases::build();
+//    GroupCases::build();
+//
+//    std::cout << GroupCases::fast_parse({169, 1, 7472}) << std::endl;
+//    std::cout << GroupCases::fast_parse({164, 0, 30833}) << std::endl;
+//
+//    std::cout << GroupCases::fast_obtain(CommonCode::unsafe_create(0x1A9BF0C00)) << std::endl;
+//    std::cout << GroupCases::fast_obtain(CommonCode::unsafe_create(0x4FEA13400)) << std::endl;
 
-    std::cout << GroupCases::fast_parse({169, 1, 7472}) << std::endl;
-    std::cout << GroupCases::fast_parse({164, 0, 30833}) << std::endl;
+    auto group = Group::unsafe_create(123, 1446);
 
-    std::cout << GroupCases::fast_obtain(CommonCode::unsafe_create(0x1A9BF0C00)) << std::endl;
-    std::cout << GroupCases::fast_obtain(CommonCode::unsafe_create(0x4FEA13400)) << std::endl;
+    std::cout << group.to_horizontal_mirror().group_id() << std::endl;
+    std::cout << group.to_vertical_mirror().group_id() << std::endl;
 
     std::cerr << std::chrono::system_clock::now() - start << std::endl;