1 files changed, 33 insertions, 0 deletions
diff --git a/azalea-core/src/objectives.rs b/azalea-core/src/objectives.rs
new file mode 100644
index 00000000..dd1534f2
--- /dev/null
+++ b/azalea-core/src/objectives.rs
@@ -0,0 +1,33 @@
+use std::{
+    fmt::{self, Display, Formatter},
+    str::FromStr,
+};
+
+use azalea_buf::McBuf;
+
+#[derive(Clone, Copy, Debug, McBuf)]
+pub enum ObjectiveCriteria {
+    Integer,
+    Hearts,
+}
+
+impl Display for ObjectiveCriteria {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        match self {
+            ObjectiveCriteria::Integer => write!(f, "integer"),
+            ObjectiveCriteria::Hearts => write!(f, "hearts"),
+        }
+    }
+}
+
+impl FromStr for ObjectiveCriteria {
+    type Err = ();
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "integer" => Ok(ObjectiveCriteria::Integer),
+            "hearts" => Ok(ObjectiveCriteria::Hearts),
+            _ => Err(()),
+        }
+    }
+}