add explicit 'solid' block property

res/scripts/post_content.lua

@@ -7,7 +7,7 @@ local names = {
     "hidden", "draw-group", "picking-item", "surface-replacement", "script-name",
     "ui-layout", "inventory-size", "tick-interval", "overlay-texture",
     "translucent", "fields", "particles", "icon-type", "icon", "placing-block",
-    "stack-size", "name", "script-file", "culling"
+    "stack-size", "name", "script-file", "culling", "solid"
 }
 for name, _ in pairs(user_props) do
     table.insert(names, name)

src/content/ContentBuilder.cpp

@@ -34,11 +34,15 @@ std::unique_ptr<Content> ContentBuilder::build() {
 
         if (def.variants) {
             for (auto& variant : def.variants->variants) {
-                variant.rt.solid = variant.model.type == BlockModelType::BLOCK;
+                variant.rt.solid =
+                    variant.model.type == BlockModelType::BLOCK ||
+                    def.explictlySolid;
             }
             def.defaults = def.variants->variants.at(0);
         } else {
-            def.defaults.rt.solid = def.defaults.model.type == BlockModelType::BLOCK;
+            def.defaults.rt.solid =
+                def.defaults.model.type == BlockModelType::BLOCK ||
+                def.explictlySolid;
         }
 
         const float EPSILON = 0.01f;

src/content/loading/BlockLoader.cpp

@@ -227,6 +227,7 @@ template<> void ContentUnitLoader<Block>::loadUnit(
     root.at("tick-interval").get(def.tickInterval);
     root.at("overlay-texture").get(def.overlayTexture);
     root.at("translucent").get(def.translucent);
+    root.at("solid").get(def.explictlySolid);
 
     if (root.has("fields")) {
         def.dataStruct = std::make_unique<StructLayout>();

src/graphics/render/BlocksRenderer.cpp

@@ -331,7 +331,7 @@ void BlocksRenderer::blockCustomModel(
 
             if (!block.rt.extended
                 && !isOpen(glm::floor(coord + vp + 0.5f + n * 1e-3f), block, variant)
-                && is_aligned(n)) {
+                /*&& is_aligned(n)*/) {
                 continue;
             }
 

src/voxels/Block.hpp

@@ -230,6 +230,9 @@ public:
     /// @brief Block has semi-transparent texture
     bool translucent = false;
 
+    /// @brief Explicitly overriding 'solid' property if true assigned
+    bool explictlySolid = false;
+
     /// @brief Set of block physical hitboxes
     std::vector<AABB> hitboxes {AABB()};