From ebd57e4bc6972a79a5de1c52646f75ca15abdaee Mon Sep 17 00:00:00 2001
From: Vladimir Olteanu <vladimir.olteanu@cs.pub.ro>
Date: Thu, 29 Apr 2021 15:17:12 +0300
Subject: [PATCH] Operators for Point: +, -, +=, -= (#1739)

---
 Source/engine.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/Source/engine.h b/Source/engine.h
index e39dfb5a8..33afa7ecc 100644
--- a/Source/engine.h
+++ b/Source/engine.h
@@ -60,6 +60,32 @@ enum direction : uint8_t {
 struct Point {
 	int x;
 	int y;
+
+	Point &operator +=(const Point &other)
+	{
+		x += other.x;
+		y += other.y;
+		return *this;
+	}
+
+	Point &operator -=(const Point &other)
+	{
+		x -= other.x;
+		y -= other.y;
+		return *this;
+	}
+
+	friend Point operator +(Point a, const Point &b)
+	{
+		a += b;
+		return a;
+	}
+
+	friend Point operator -(Point a, const Point &b)
+	{
+		a -= b;
+		return a;
+	}
 };
 
 struct ActorPosition {