EVENT_ADD_COUNTER, EVENT_REMOVE_COUNTER

Duel.RemoveCounter(): It will raise field event EVENT_REMOVE_COUNTER.
Card.RemoveCounter(): The script should raise it manually.
Card,AddCounter(): It will raise single event EVENT_ADD_COUNTER.

card.cpp

@@ -1550,6 +1550,8 @@ int32 card::add_counter(uint8 playerid, uint16 countertype, uint16 count, uint8
 	pduel->write_buffer8(current.location);
 	pduel->write_buffer8(current.sequence);
 	pduel->write_buffer16(pcount);
+	pduel->game_field->raise_single_event(this, 0, EVENT_ADD_COUNTER + countertype, pduel->game_field->core.reason_effect, REASON_EFFECT, playerid, playerid, pcount);
+	pduel->game_field->process_single_event();
 	return TRUE;
 }
 int32 card::remove_counter(uint16 countertype, uint16 count) {

libcard.cpp

@@ -1858,6 +1858,7 @@ int32 scriptlib::card_remove_counter(lua_State *L) {
 	uint32 count = lua_tointeger(L, 4);
 	uint32 reason = lua_tointeger(L, 5);
 	if(countertype == 0) {
+		// c38834303
 		for(auto cmit = pcard->counters.begin(); cmit != pcard->counters.end(); ++cmit) {
 			pcard->pduel->write_buffer8(MSG_REMOVE_COUNTER);
 			pcard->pduel->write_buffer16(cmit->first);

operations.cpp

@@ -460,6 +460,7 @@ int32 field::damage(uint16 step, effect* reason_effect, uint32 reason, uint8 rea
 			}
 			raise_single_event(reason_card, 0, EVENT_BATTLE_DAMAGE, 0, 0, reason_player, playerid, val);
 			raise_event(reason_card, EVENT_BATTLE_DAMAGE, 0, 0, reason_player, playerid, val);
+			process_single_event();
 		}
 		process_instant_event();
 		return FALSE;
@@ -644,7 +645,7 @@ int32 field::remove_counter(uint16 step, uint32 reason, card* pcard, uint8 rplay
 		}
 		if(pcard) {
 			returns.ivalue[0] = pcard->remove_counter(countertype, count);
-			core.units.begin()->step = 2;
+			core.units.begin()->step = 3;
 			return FALSE;
 		}
 		card* pcard;

processor.cpp

@@ -1244,6 +1244,7 @@ void field::raise_event(card_set* event_cards, uint32 event_code, effect* reason
 	new_event.event_value = event_value;
 	core.queue_event.push_back(new_event);
 }
+// add events to core.single_event
 void field::raise_single_event(card* trigger_card, card_set* event_cards, uint32 event_code, effect * reason_effect, uint32 reason, uint8 reason_player, uint8 event_player, uint32 event_value) {
 	tevent new_event;
 	new_event.trigger_card = trigger_card;