Make Bevy dependencies optional in azalea-protocol (#303)

* Make Bevy dependencies optional in azalea-protocol

* derive serde traits on Direction again

* update docs for types that may not have Component

1 files changed, 50 insertions, 0 deletions

diff --git a/azalea-core/src/heightmap_kind.rs b/azalea-core/src/heightmap_kind.rs
new file mode 100644
index 00000000..07100a77
--- /dev/null
+++ b/azalea-core/src/heightmap_kind.rs
@@ -0,0 +1,50 @@
+// (wg stands for worldgen)
+
+use std::{
+    fmt::{self, Display},
+    str::FromStr,
+};
+
+use azalea_buf::AzBuf;
+
+/// A type of world heightmap.
+///
+/// See `azalea_world::heightmap` for more info.
+#[derive(AzBuf, Clone, Copy, Debug, Eq, Hash, PartialEq)]
+pub enum HeightmapKind {
+    WorldSurfaceWg,
+    WorldSurface,
+    OceanFloorWg,
+    OceanFloor,
+    MotionBlocking,
+    MotionBlockingNoLeaves,
+}
+
+impl FromStr for HeightmapKind {
+    type Err = ();
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "WORLD_SURFACE_WG" => Ok(HeightmapKind::WorldSurfaceWg),
+            "WORLD_SURFACE" => Ok(HeightmapKind::WorldSurface),
+            "OCEAN_FLOOR_WG" => Ok(HeightmapKind::OceanFloorWg),
+            "OCEAN_FLOOR" => Ok(HeightmapKind::OceanFloor),
+            "MOTION_BLOCKING" => Ok(HeightmapKind::MotionBlocking),
+            "MOTION_BLOCKING_NO_LEAVES" => Ok(HeightmapKind::MotionBlockingNoLeaves),
+            _ => Err(()),
+        }
+    }
+}
+
+impl Display for HeightmapKind {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            HeightmapKind::WorldSurfaceWg => write!(f, "WORLD_SURFACE_WG"),
+            HeightmapKind::WorldSurface => write!(f, "WORLD_SURFACE"),
+            HeightmapKind::OceanFloorWg => write!(f, "OCEAN_FLOOR_WG"),
+            HeightmapKind::OceanFloor => write!(f, "OCEAN_FLOOR"),
+            HeightmapKind::MotionBlocking => write!(f, "MOTION_BLOCKING"),
+            HeightmapKind::MotionBlockingNoLeaves => write!(f, "MOTION_BLOCKING_NO_LEAVES"),
+        }
+    }
+}