optcode             arguments                            action
1                   speed                                player speed change
2                                                        spawn zombie
3                   start_dist, end_dist                 set fog start end
4                   speed                                set zombie speed
5                   finished round number                round finished
6                   new threshold                        set zombie count threshold
7                                                        start calibrating
8                                                        calibrating finished
9                   new increase power                   set zombie increase power
10                  new permitted max number alive       set max zombie alive limit for spawner
11                  new delay value                      grenade regeneration delay
12                  new delay value                      healthpack regeneration delay
13                  new adapt id (player:1,npc:2,env:3)  game adaptation approach change