private void act() {
int action = weightCollection.next();
switch (action) {
case ACTION_POP:
pop();
break;
case ACTION_SPAWNMOB:
spawnMob();
break;
case ACTION_POTION:
potion();
break;
case ACTION_SPAWNITEM:
spawnItem();
break;
case ACTION_LIGHTNING:
spawnLightning();
break;
}
}
