Better vec_clamp

src/vec.c

@@ -47,17 +47,9 @@ void vec_divf(Vec *vector, float scale) {
 void vec_lerp(Vec *from, Vec to, float scale) {
 	/* A linear interpolation function, can be used for camera and
 	 * animations. 'scale' is the transformation speed, 1 being
-	 * instant.
-	 */
-	/* from * (1 - scale) + temp * scale */
-	Vec temp;
-	vec_cpy(&temp, to);
-	/* from * (1 - scale) */
-	vec_mulf(from, 1 - scale);
-	/* temp * scale */
-	vec_mulf(&temp, scale);
-	/* add */
-	vec_add(from, temp);
+	 * instant. */
+	 from->x = from->x * (1 - scale) + to.x * scale;
+	 from->y = from->y * (1 - scale) + to.y * scale;
 }
 
 void vec_clamp(Vec *to_limit, Vec min, Vec max) {