Revert "merge Duel.CheckAdditionalSummon into Duel.IsPlayerCanSummon"

This reverts commit 861b5bcd.

interpreter.cpp

@@ -564,6 +564,7 @@ static const struct luaL_Reg duellib[] = {
 	{ "IsPlayerCanSendtoHand", scriptlib::duel_is_player_can_send_to_hand },
 	{ "IsPlayerCanSendtoGrave", scriptlib::duel_is_player_can_send_to_grave },
 	{ "IsPlayerCanSendtoDeck", scriptlib::duel_is_player_can_send_to_deck },
+	{ "CheckAdditionalSummon", scriptlib::duel_check_additional_summon },
 	{ "IsChainNegatable", scriptlib::duel_is_chain_negatable },
 	{ "IsChainDisablable", scriptlib::duel_is_chain_disablable },
 	{ "CheckChainTarget", scriptlib::duel_check_chain_target },

libduel.cpp

@@ -3440,23 +3440,14 @@ int32 scriptlib::duel_is_player_can_summon(lua_State * L) {
 		return 1;
 	}
 	duel* pduel = interpreter::get_duel_info(L);
-	int32 check_additional;
-	if(lua_gettop(L) <= 2) {
-		check_additional = lua_toboolean(L, 2);
-		if(check_additional && pduel->game_field->core.extra_summon[playerid])
-			lua_pushboolean(L, 0);
-		else
-			lua_pushboolean(L, pduel->game_field->is_player_can_summon(playerid));
-	} else {
+	if(lua_gettop(L) == 1)
+		lua_pushboolean(L, pduel->game_field->is_player_can_summon(playerid));
+	else {
 		check_param_count(L, 3);
 		check_param(L, PARAM_TYPE_CARD, 3);
 		int32 sumtype = lua_tointeger(L, 2);
 		card* pcard = *(card**) lua_touserdata(L, 3);
-		check_additional = lua_toboolean(L, 4);
-		if(check_additional && pduel->game_field->core.extra_summon[playerid])
-			lua_pushboolean(L, 0);
-		else
-			lua_pushboolean(L, pduel->game_field->is_player_can_summon(sumtype, playerid, pcard));
+		lua_pushboolean(L, pduel->game_field->is_player_can_summon(sumtype, playerid, pcard));
 	}
 	return 1;
 }
@@ -3610,6 +3601,20 @@ int32 scriptlib::duel_is_player_can_send_to_deck(lua_State * L) {
 	lua_pushboolean(L, pduel->game_field->is_player_can_send_to_deck(playerid, pcard));
 	return 1;
 }
+int32 scriptlib::duel_check_additional_summon(lua_State * L) {
+	check_param_count(L, 1);
+	int32 playerid = lua_tointeger(L, 1);
+	if(playerid != 0 && playerid != 1) {
+		lua_pushboolean(L, 0);
+		return 1;
+	}
+	duel* pduel = interpreter::get_duel_info(L);
+	if(pduel->game_field->core.extra_summon[playerid] == 0)
+		lua_pushboolean(L, 1);
+	else
+		lua_pushboolean(L, 0);
+	return 1;
+}
 int32 scriptlib::duel_is_chain_negatable(lua_State * L) {
 	check_param_count(L, 1);
 	int32 chaincount = lua_tointeger(L, 1);

scriptlib.h

@@ -558,6 +558,7 @@ public:
 	static int32 duel_is_player_can_send_to_hand(lua_State *L);
 	static int32 duel_is_player_can_send_to_grave(lua_State *L);
 	static int32 duel_is_player_can_send_to_deck(lua_State *L);
+	static int32 duel_check_additional_summon(lua_State *L);
 	static int32 duel_is_chain_negatable(lua_State *L);
 	static int32 duel_is_chain_disablable(lua_State *L);
 	static int32 duel_check_chain_target(lua_State *L);