Big performance improvement in iteration.

No longer perform a vtable lookup and function call to unpack
components. Unpacking is now completely templatised and expanded at
compile time.

1 files changed, 3 insertions, 1 deletions

diff --git a/examples/example.cc b/examples/example.cc
index 03d2767..cf00a8b 100644
--- a/examples/example.cc
+++ b/examples/example.cc
@@ -142,6 +142,8 @@ private:
 // CollisionEvent. This is used by ExplosionSystem to create explosion
 // particles, but it could be used by a SoundSystem to play an explosion
 // sound, etc..
+//
+// Uses a fairly rudimentary 2D partition system, but performs reasonably well.
 class CollisionSystem : public ex::System<CollisionSystem> {
   static const int PARTITIONS = 200;
 
@@ -292,7 +294,7 @@ public:
       target.draw(*renderable->shape.get());
     }
     last_update += dt;
-    if (last_update >= 1.0) {
+    if (last_update >= 0.5) {
       std::ostringstream out;
       out << es.size() << " entities (" << static_cast<int>(1.0 / dt) << " fps)";
       text.setString(out.str());