fix fragment:place rotation (#593)

* fix fragment:place rotation

src/logic/scripting/lua/libs/libgeneration.cpp

@@ -16,7 +16,7 @@ using namespace scripting;
 static int l_save_fragment(lua::State* L) {
     auto fragment = lua::touserdata<lua::LuaVoxelFragment>(L, 1);
     auto file = lua::require_string(L, 2);
-    auto map = fragment->getFragment()->serialize();
+    auto map = fragment->getFragment(0)->serialize();
     auto bytes = json::to_binary(map, true);
     io::write_bytes(file, bytes.data(), bytes.size());
     return 0;
@@ -30,8 +30,14 @@ static int l_create_fragment(lua::State* L) {
 
     auto fragment =
         VoxelFragment::create(*level, pointA, pointB, crop, saveEntities);
+    std::array<std::shared_ptr<VoxelFragment>, 4> fragmentVariants {
+        std::move(fragment)
+    };
+    for (size_t i = 1; i < 4; i++) {
+        fragmentVariants[i] = fragmentVariants[i - 1]->rotated(*content);
+    }
     return lua::newuserdata<lua::LuaVoxelFragment>(
-        L, std::shared_ptr<VoxelFragment>(std::move(fragment))
+        L, std::move(fragmentVariants)
     );
 }
 
@@ -45,7 +51,15 @@ static int l_load_fragment(lua::State* L) {
     auto fragment = std::make_shared<VoxelFragment>();
     fragment->deserialize(map);
     fragment->prepare(*content);
-    return lua::newuserdata<lua::LuaVoxelFragment>(L, std::move(fragment));
+    std::array<std::shared_ptr<VoxelFragment>, 4> fragmentVariants {
+        std::move(fragment)
+    };
+    for (size_t i = 1; i < 4; i++) {
+        fragmentVariants[i] = fragmentVariants[i - 1]->rotated(*content);
+    }
+    return lua::newuserdata<lua::LuaVoxelFragment>(
+        L, std::move(fragmentVariants)
+    );
 }
 
 /// @brief Get a list of all world generators

src/logic/scripting/lua/lua_custom_types.hpp

@@ -2,6 +2,7 @@
 
 #include <string>
 #include <vector>
+#include <array>
 
 #include "lua_commons.hpp"
 
@@ -55,14 +56,16 @@ namespace lua {
     static_assert(!std::is_abstract<LuaHeightmap>());
 
     class LuaVoxelFragment : public Userdata {
-        std::shared_ptr<VoxelFragment> fragment;
+        std::array<std::shared_ptr<VoxelFragment>, 4> fragmentVariants;
     public:
-        LuaVoxelFragment(std::shared_ptr<VoxelFragment> fragment);
+        LuaVoxelFragment(
+            std::array<std::shared_ptr<VoxelFragment>, 4> fragmentVariants
+        );
 
         virtual ~LuaVoxelFragment();
 
-        std::shared_ptr<VoxelFragment> getFragment() const {
-            return fragment;
+        std::shared_ptr<VoxelFragment> getFragment(size_t rotation) const {
+            return fragmentVariants.at(rotation & 0b11);
         }
 
         const std::string& getTypeName() const override {

src/logic/scripting/lua/usertypes/lua_type_voxelfragment.cpp

@@ -8,15 +8,20 @@
 
 using namespace lua;
 
-LuaVoxelFragment::LuaVoxelFragment(std::shared_ptr<VoxelFragment> fragment)
-    : fragment(std::move(fragment)) {}
+LuaVoxelFragment::LuaVoxelFragment(
+    std::array<std::shared_ptr<VoxelFragment>, 4> fragmentVariants
+)
+    : fragmentVariants(std::move(fragmentVariants)) {
+}
 
 LuaVoxelFragment::~LuaVoxelFragment() {
 }
 
 static int l_crop(lua::State* L) {
     if (auto fragment = touserdata<LuaVoxelFragment>(L, 1)) {
-        fragment->getFragment()->crop();
+        for (size_t i = 0; i < 4; i++) {
+            fragment->getFragment(i)->crop();
+        }
     }
     return 0;
 }
@@ -24,9 +29,9 @@ static int l_crop(lua::State* L) {
 static int l_place(lua::State* L) {
     if (auto fragment = touserdata<LuaVoxelFragment>(L, 1)) {
         auto offset = tovec3(L, 2);
-        int rotation = tointeger(L, 3) & 0b11;
-        fragment->getFragment()->place(
-            *scripting::level->chunks, offset, rotation 
+        int rotation = tointeger(L, 3);
+        fragment->getFragment(rotation)->place(
+            *scripting::level->chunks, offset 
         );
     }
     return 0;
@@ -50,7 +55,7 @@ static int l_meta_index(lua::State* L) {
     if (isstring(L, 2)) {
         auto fieldname = tostring(L, 2);
         if (!std::strcmp(fieldname, "size")) {
-            return pushivec(L, fragment->getFragment()->getSize());
+            return pushivec(L, fragment->getFragment(0)->getSize());
         } else {
             auto found = methods.find(tostring(L, 2));
             if (found != methods.end()) {

src/world/generator/VoxelFragment.cpp

@@ -171,7 +171,7 @@ void VoxelFragment::prepare(const Content& content) {
 }
 
 void VoxelFragment::place(
-    GlobalChunks& chunks, const glm::ivec3& offset, ubyte rotation
+    GlobalChunks& chunks, const glm::ivec3& offset
 ) {
     auto& structVoxels = getRuntimeVoxels();
     for (int y = 0; y < size.y; y++) {

src/world/generator/VoxelFragment.hpp

@@ -45,8 +45,7 @@ public:
 
     /// @brief Place fragment to the world
     /// @param offset target location
-    /// @param rotation rotation index
-    void place(GlobalChunks& chunks, const glm::ivec3& offset, ubyte rotation);
+    void place(GlobalChunks& chunks, const glm::ivec3& offset);
 
     /// @brief Create structure copy rotated 90 deg. clockwise
     std::unique_ptr<VoxelFragment> rotated(const Content& content) const;