Fix first frame being black

TBH this just fixes the symptom be re-rendering...

src/renderable.cpp

@@ -54,6 +54,7 @@ void Renderable::Render(const Shader *const shader) const {
     glVertexAttribPointer(attribLoc, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex),
                           reinterpret_cast<void *>(offsetof(Vertex, normal)));
   } else {
+    // This will sometimes spam at the beginning of execution
     cerr << "Not loading vtxNormal" << endl;
   }
 

src/renderer.in.cpp

@@ -263,7 +263,7 @@ void Renderer::HandleMovementKey(const unsigned char key, const bool down) {
 }
 
 void Renderer::Tick(const int ticks) {
-  bool doneSomething = false;
+  bool doneSomething = ticks == 0;
   if (last_mouse_x_ < 0 || last_mouse_x_ > viewport_width_ ||
       last_mouse_y_ < 0 || last_mouse_y_ > viewport_height_) {
     move_forward_ = false;