chore: reorg

__serialization/flatbuffers/src/main.rs

@@ -0,0 +1,57 @@
+#[allow(dead_code, unused_imports)]
+mod monster_generated;
+
+use flatbuffers::FlatBufferBuilder;
+use monster_generated::my_game::sample::Monster;
+use monster_generated::my_game::sample::MonsterArgs;
+
+// https://github.com/frol/flatc-rust/blob/master/examples/tutorial/src/main.rs
+fn main() {
+    let mut fbb = FlatBufferBuilder::new();
+
+    let name = fbb.create_string("Sample Name!");
+
+    let monster = Monster::create(&mut fbb, &MonsterArgs {
+        mana: 150,
+        hp: 80,
+        name: Some(name),
+        ..Default::default()
+    });
+
+    fbb.finish(monster, None);
+
+    let buff = fbb.finished_data();
+
+    println!("FlatBuffers: {}", hex::encode(&buff));
+
+    let monster_2 = flatbuffers::get_root::<Monster>(&buff);
+    println!("Monster hp: {}", monster_2.hp());
+    println!("Monster name: {:?}", monster_2.name());
+
+    let offset_to_body = u32::from_le_bytes(get_4bytes(&buff));
+    println!("Offset to body  : {:>4}, hex: {}", offset_to_body, hex::encode(&get_4bytes(&buff)));
+    let xx = &buff[4..offset_to_body as usize];
+    println!("{}", hex::encode(xx));
+    let offset_to_vtable = u32::from_le_bytes(get_4bytes(&buff[offset_to_body as usize..]));
+    println!("Offset to vtable: {:>4}, hex: {}", offset_to_vtable, hex::encode(get_4bytes(&buff[offset_to_body as usize..])));
+
+    let a1 = u16::from_le_bytes(get_2bytes(&buff[offset_to_body as usize..]));
+    let a2 = u16::from_le_bytes(get_2bytes(&buff[(offset_to_body + 2) as usize..]));
+    println!("a1: {}, a2: {}", a1, a2);
+}
+
+fn get_2bytes(buff: &[u8]) -> [u8; 2] {
+    let mut ret = [0_u8; 2];
+    ret[0] = buff[0];
+    ret[1] = buff[1];
+    ret
+}
+
+fn get_4bytes(buff: &[u8]) -> [u8; 4] {
+    let mut ret = [0_u8; 4];
+    ret[0] = buff[0];
+    ret[1] = buff[1];
+    ret[2] = buff[2];
+    ret[3] = buff[3];
+    ret
+}