add block particles property

src/content/ContentLoader.cpp

@@ -22,6 +22,7 @@
 #include "voxels/Block.hpp"
 #include "data/dv_util.hpp"
 #include "data/StructLayout.hpp"
+#include "presets/ParticlesPreset.hpp"
 
 namespace fs = std::filesystem;
 using namespace data;
@@ -335,6 +336,11 @@ void ContentLoader::loadBlock(
         perform_user_block_fields(def.name, *def.dataStruct);
     }
 
+    if (root.has("particles")) {
+        def.particles = std::make_unique<ParticlesPreset>();
+        def.particles->deserialize(root["particles"]);
+    }
+
     if (def.tickInterval == 0) {
         def.tickInterval = 1;
     }