From f02e2637492c66c09d588f4ea28efcf041bc8cdb Mon Sep 17 00:00:00 2001
From: Nolan Darilek <nolan@thewordnerd.info>
Date: Wed, 22 Feb 2023 10:41:49 -0600
Subject: [PATCH] feat: Add optional map serialization.

---
 Cargo.toml      | 1 +
 src/geometry.rs | 5 +++++
 src/map.rs      | 8 +++++++-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index 0dc4305..e31f92a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,6 +11,7 @@ edition = "2021"
 
 [dependencies]
 rand = "0.8"
+serde = { version = "1", optional = true, features = ["derive"]}
 
 [package.metadata.release]
 publish = false
diff --git a/src/geometry.rs b/src/geometry.rs
index 564974d..846e21f 100644
--- a/src/geometry.rs
+++ b/src/geometry.rs
@@ -1,8 +1,12 @@
 //! Support function for 2D geometry
 //!
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /// Position on the map
 #[derive(Default, PartialEq, Copy, Clone, Debug, Eq, Hash)]
+#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
 pub struct Point {
     pub x: usize,
     pub y: usize,
@@ -29,6 +33,7 @@ impl Point {
 
 /// Rectangle region on the map
 #[derive(Hash, PartialEq, Eq, Copy, Clone, Debug)]
+#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
 pub struct Rect {
     pub x1: usize,
     pub x2: usize,
diff --git a/src/map.rs b/src/map.rs
index c84c762..5e8fa87 100644
--- a/src/map.rs
+++ b/src/map.rs
@@ -7,10 +7,15 @@
 //! specific game.
 //!
 
-use super::geometry::{usize_abs, Point, Rect};
 use std::fmt;
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
+use crate::geometry::{usize_abs, Point, Rect};
+
 #[derive(PartialEq, Copy, Clone, Debug, Eq, Hash)]
+#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
 pub struct Tile {
     is_blocked: bool,
     index: usize,
@@ -30,6 +35,7 @@ pub struct NoData;
 
 /// Map data
 #[derive(Default, Clone)]
+#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
 pub struct Map<D: Clone + Default> {
     pub tiles: Vec<Tile>,
     pub width: usize,