From a44a9a04f9714bd1c8ba8cc548be174008edb616 Mon Sep 17 00:00:00 2001
From: "Zed A. Shaw" <zed.shaw@gmail.com>
Date: Fri, 1 Nov 2024 00:40:04 -0400
Subject: [PATCH] Learned yesterday that you can do a multi-return assing to
 auto[] by just returning a struct.

---
 collider.cpp | 4 ++--
 collider.hpp | 8 ++++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/collider.cpp b/collider.cpp
index c7f7f2a..262dfd2 100644
--- a/collider.cpp
+++ b/collider.cpp
@@ -41,7 +41,7 @@ inline void find_neighbor(const PointEntityMap &table, EntityList &result, Point
   }
 }
 
-std::tuple<bool, EntityList> spatial_map::neighbors(Point cell, bool diag) const {
+FoundEntities spatial_map::neighbors(Point cell, bool diag) const {
   EntityList result;
 
   // just unroll the loop since we only check four directions
@@ -58,5 +58,5 @@ std::tuple<bool, EntityList> spatial_map::neighbors(Point cell, bool diag) const
     find_neighbor(table, result, cell, -1, 1); // north west
   }
 
-  return std::tuple(!result.empty(), result);
+  return {!result.empty(), result};
 }
diff --git a/collider.hpp b/collider.hpp
index 2a4f502..bbc5dee 100644
--- a/collider.hpp
+++ b/collider.hpp
@@ -4,12 +4,16 @@
 #include "map.hpp"
 #include "dinkyecs.hpp"
 #include "point.hpp"
-#include <tuple>
 
 typedef std::vector<DinkyECS::Entity> EntityList;
 
 typedef std::unordered_map<Point, DinkyECS::Entity, PointHash> PointEntityMap;
 
+struct FoundEntities {
+  bool found;
+  EntityList nearby;
+};
+
 class spatial_map {
   public:
     spatial_map() {}
@@ -18,7 +22,7 @@ class spatial_map {
     void move(Point from, Point to, DinkyECS::Entity ent);
     void remove(Point pos);
     bool occupied(Point pos) const;
-    std::tuple<bool, EntityList> neighbors(Point position, bool diag=false) const;
+    FoundEntities neighbors(Point position, bool diag=false) const;
 
   private:
     PointEntityMap table;