add util::Buffer, rle::encode16, rle::decode16

test/voxels/Chunk.cpp

@@ -0,0 +1,25 @@
+#include <gtest/gtest.h>
+
+#include "voxels/Chunk.hpp"
+
+TEST(Chunk, EncodeDecode) {
+    Chunk chunk1(0, 0);
+    for (uint i = 0; i < CHUNK_VOL; i++) {
+        chunk1.voxels[i].id = rand();
+        chunk1.voxels[i].state.rotation = rand();
+        chunk1.voxels[i].state.segment = rand();
+        chunk1.voxels[i].state.userbits = rand();
+    }
+    auto bytes = chunk1.encode();
+
+    Chunk chunk2(0, 0);
+    chunk2.decode(bytes.get());
+
+    for (uint i = 0; i < CHUNK_VOL; i++) {
+        EXPECT_EQ(chunk1.voxels[i].id, chunk2.voxels[i].id);
+        EXPECT_EQ(
+            blockstate2int(chunk1.voxels[i].state), 
+            blockstate2int(chunk2.voxels[i].state)
+        );
+    }
+}