From a8685ee4fd6eaba79fa53f4adf261d672947a000 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel-Junior=20Dub=C3=A9?=
 <35472759+daniel-junior-dube@users.noreply.github.com>
Date: Sun, 4 Oct 2020 06:12:52 -0400
Subject: [PATCH] Add Vector2Reflect to raymath.h (#1400)

Vector3Reflect exists but not Vector2Reflect. The code is pretty much the same.
I'm not sure what RMDEF does, but I added it to match other function definitions (haven't done much C programming, maybe I'm missing something). Can someone explain to me what it does?
---
 src/raymath.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/raymath.h b/src/raymath.h
index 783c4449b..06ab13201 100644
--- a/src/raymath.h
+++ b/src/raymath.h
@@ -297,6 +297,19 @@ RMDEF Vector2 Vector2Lerp(Vector2 v1, Vector2 v2, float amount)
     return result;
 }
 
+// Calculate reflected vector to normal
+RMDEF Vector2 Vector2Reflect(Vector2 v, Vector2 normal)
+{
+    Vector2 result = { 0 };
+
+    float dotProduct = Vector2DotProduct(v, normal);
+
+    result.x = v.x - (2.0f*normal.x)*dotProduct;
+    result.y = v.y - (2.0f*normal.y)*dotProduct;
+
+    return result;
+}
+
 // Rotate Vector by float in Degrees.
 RMDEF Vector2 Vector2Rotate(Vector2 v, float degs)
 {