start adding azalea-world

1 files changed, 43 insertions, 0 deletions

diff --git a/azalea-world/src/lib.rs b/azalea-world/src/lib.rs
new file mode 100644
index 00000000..20043bbf
--- /dev/null
+++ b/azalea-world/src/lib.rs
@@ -0,0 +1,43 @@
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        let result = 2 + 2;
+        assert_eq!(result, 4);
+    }
+}
+
+pub struct Chunk {
+    sections: Vec<Section>,
+}
+
+pub struct Section {
+    states: PalettedContainer,
+    biomes: PalettedContainer,
+}
+
+pub struct PalettedContainer {
+    bits_per_entry: u8,
+    palette: Palette,
+    /// Compacted list of indices pointing to entry IDs in the Palette.
+    data: Vec<i64>,
+}
+
+pub enum Palette {
+    /// ID of the corresponding entry in its global palette
+    SingleValue(u32),
+    LinearPalette(Vec<u32>),
+    HashmapPalette(Vec<u32>),
+    GlobalPalette,
+}
+
+impl Palette {
+    fn choose_palette_for_states(bits_per_entry: u8) -> &'static Palette {
+        match bits_per_entry {
+            0 => &Palette::SingleValue,
+            1..=4 => &Palette::LinearPalette,
+            5..=8 => &Palette::HashmapPalette,
+            _ => &Palette::GlobalPalette,
+        }
+    }
+}