From 44d8e4eba0d9d9da0fe19d5f046dbc87c72cf124 Mon Sep 17 00:00:00 2001
From: Aryadev Chavali <aryadev@aryadevchavali.com>
Date: Thu, 2 Apr 2026 05:25:17 +0100
Subject: [PATCH] modes:mod: Hand trait

Any hand from any round mode has a chance of footstooling another hand
from that same mode.  This trait (Hand) allows us to implement these
semantics (as well as any other shared semantics) for each round mode.
---
 src/modes/mod.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/modes/mod.rs b/src/modes/mod.rs
index 2fdacdc..4b38077 100644
--- a/src/modes/mod.rs
+++ b/src/modes/mod.rs
@@ -1 +1,13 @@
+mod pair;
 mod single;
+
+#[derive(Eq, Ord, PartialEq, PartialOrd, Debug, Copy, Clone)]
+pub enum Footstool {
+    None,
+    Half,
+    Full,
+}
+
+pub trait Hand {
+    fn footstool(&self, other: Self) -> Footstool;
+}