From 366da0177c18c266bf90d5dd6f1b71d0b7903a13 Mon Sep 17 00:00:00 2001
From: hasufell <hasufell@hasufell.de>
Date: Mon, 12 May 2014 19:49:23 +0200
Subject: [PATCH] Add set_null_vector() function

Set the vector to a null vector.
---
 src/vector.c | 19 +++++++++++++++++++
 src/vector.h |  1 +
 2 files changed, 20 insertions(+)

diff --git a/src/vector.c b/src/vector.c
index 60d0c10..f33f2c8 100644
--- a/src/vector.c
+++ b/src/vector.c
@@ -165,3 +165,22 @@ bool copy_vector(vector *a, vector *b)
 
 	return true;
 }
+
+/**
+ * Set the vector to a null vector.
+ *
+ * @param a vector [out]
+ * @return true/false for success/failure
+ */
+bool set_null_vector(vector *a)
+{
+	if (!a)
+		return false;
+
+	a->x = 0;
+	a->y = 0;
+	a->z = 0;
+
+	return true;
+
+}
diff --git a/src/vector.h b/src/vector.h
index 8c8b68a..b91a6f0 100644
--- a/src/vector.h
+++ b/src/vector.h
@@ -48,6 +48,7 @@ bool add_vectors(vector *a, vector *b, vector *c);
 bool sub_vectors(vector *a, vector *b, vector *c);
 bool normalize_vector(vector *a, vector *b);
 bool copy_vector(vector *a, vector *b);
+bool set_null_vector(vector *a);
 
 
 #endif /* _DROW_ENGINE_VEC_MATH_H */