*misc

2 files changed, 12 insertions, 2 deletions

diff --git a/src/math/math.h b/src/math/math.h
index 8793336..e63c603 100644
--- a/src/math/math.h
+++ b/src/math/math.h
@@ -151,9 +151,9 @@ extern Vec3 vec3zero; /*(0,0,0)*/
 extern Vec2 vec2zero; /*(0,0,0)*/
 extern Vec4 vec4zero; /*(0,0,0)*/
 
-#define zerovec3 {0, 0, 0}
 #define zerovec2 {0, 0}
-#define zerovec4 {0, 0, 0}
+#define zerovec3 {0, 0, 0}
+#define zerovec4 {0, 0, 0, 0}
 
 void vec3_tostring(Vec3* v, char buf[]);
 void vec3_print(Vec3* v);
@@ -186,6 +186,9 @@ void vec4_lerp(Vec4* a, Vec4* b, float t, Vec4* out);
 
 void vec4_scale(Vec4* v, float t, Vec4* out);
 
+void vec4_add(Vec4* v1, Vec4* v2, Vec4* out);
+
+
 /************************************************************************/
 /* Matrix                                                               */
 /************************************************************************/
diff --git a/src/math/vec4.c b/src/math/vec4.c
index 202aabd..71ec6b6 100644
--- a/src/math/vec4.c
+++ b/src/math/vec4.c
@@ -38,3 +38,10 @@ void vec4_scale(Vec4* v, float t, Vec4* out) {
 	out->z = v->z * t;
 	out->w = v->w * t;
 }
+
+void vec4_add(Vec4* v1, Vec4* v2, Vec4* out) {
+	out->x = v1->x + v2->x;
+	out->y = v1->y + v2->y;
+	out->z = v1->z + v2->z;
+	out->w = v1->w + v2->w;
+}