improve W & S controls

src/main.c

@@ -114,6 +114,7 @@ void handleInputs(double deltaTime) {
             vec3 delta;
 
             vec3Subtract(&delta, &origin, &cameraPosition);
+            delta.y = 0;
             vec3Normalise(&delta, &delta);
             vec3Multiply(&delta, &delta, -10);
             vec3Multiply(&delta, &delta, deltaTime);
@@ -123,6 +124,7 @@ void handleInputs(double deltaTime) {
         if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS) {
             vec3 delta;
             vec3Subtract(&delta, &origin, &cameraPosition);
+            delta.y = 0;
             if (vec3Length(&delta) > 0.1) {
                 vec3Normalise(&delta, &delta);
                 vec3Multiply(&delta, &delta, 10);