refactor separate framework from game code, add demo3d

demo3d/server/src/chunk.rs

@@ -0,0 +1,26 @@
+pub mod stream;
+
+use crate::bsp::Bsp;
+
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)]
+pub enum ChunkId {
+    Bsp { cx: i32, cz: i32 },
+}
+
+pub enum Chunk {
+    Bsp { cx: i32, cz: i32, bsp: Bsp, version: u32 },
+}
+
+impl Chunk {
+    pub fn version(&self) -> u32 {
+        match self {
+            Chunk::Bsp { version, .. } => *version,
+        }
+    }
+
+    pub fn as_bsp(&self) -> Option<&Bsp> {
+        match self {
+            Chunk::Bsp { bsp, .. } => Some(bsp),
+        }
+    }
+}