+static particles_grind = {
+ .scale = 0.02f,
+ .velocity_scale = 0.001f,
+ .width = 0.0125f
+};
+
+static void particle_alloc( particle_system *sys, u32 max );
+static void particle_system_update( particle_system *sys, f32 dt );
+static void particle_system_debug( particle_system *sys );
+static void particle_system_prerender( particle_system *sys );
+static void particle_system_render( particle_system *sys, camera *cam );