add Card.IsAbleToDecreaseAttackAsCpst & Card.IsAbleToDecreaseDefenseAsCost

card.cpp

@@ -3328,6 +3328,28 @@ int32 card::is_removeable_as_cost(uint8 playerid) {
 		return FALSE;
 	return TRUE;
 }
+int32 card::is_attack_decreasable_as_cost(uint8 playerid, int32 val) {
+	if(!(data.type & TYPE_MONSTER) && !(get_type() & TYPE_MONSTER))
+		return FALSE;
+	if(!(current.location & LOCATION_MZONE) || is_position(POS_FACEDOWN))
+		return FALSE;
+	if(is_affected_by_effect(EFFECT_SET_ATTACK_FINAL) || is_affected_by_effect(EFFECT_REVERSE_UPDATE))
+		return FALSE;
+	if(val && get_attack() < val)
+		return FALSE;
+	return TRUE;
+}
+int32 card::is_defense_decreasable_as_cost(uint8 playerid, int32 val) {
+	if(!(data.type & TYPE_MONSTER) && !(get_type() & TYPE_MONSTER))
+		return FALSE;
+	if(!(current.location & LOCATION_MZONE) || is_position(POS_FACEDOWN) || (data.type & TYPE_LINK))
+		return FALSE;
+	if(is_affected_by_effect(EFFECT_SET_DEFENSE_FINAL) || is_affected_by_effect(EFFECT_REVERSE_UPDATE))
+		return FALSE;
+	if(val && get_defense() < val)
+		return FALSE;
+	return TRUE;
+}
 int32 card::is_releasable_by_summon(uint8 playerid, card *pcard) {
 	if(is_status(STATUS_SUMMONING))
 		return FALSE;

card.h

@@ -318,6 +318,8 @@ public:
 	int32 is_destructable_by_effect(effect* peffect, uint8 playerid);
 	int32 is_removeable(uint8 playerid);
 	int32 is_removeable_as_cost(uint8 playerid);
+	int32 is_attack_decreasable_as_cost(uint8 playerid, int32 val);
+	int32 is_defense_decreasable_as_cost(uint8 playerid, int32 val);
 	int32 is_releasable_by_summon(uint8 playerid, card* pcard);
 	int32 is_releasable_by_nonsummon(uint8 playerid);
 	int32 is_releasable_by_effect(uint8 playerid, effect* peffect);

interpreter.cpp

@@ -205,6 +205,8 @@ static const struct luaL_Reg cardlib[] = {
 	{ "IsAbleToDeckOrExtraAsCost", scriptlib::card_is_able_to_deck_or_extra_as_cost },
 	{ "IsAbleToGraveAsCost", scriptlib::card_is_able_to_grave_as_cost },
 	{ "IsAbleToRemoveAsCost", scriptlib::card_is_able_to_remove_as_cost },
+	{ "IsAbleToDecreaseAttackAsCost", scriptlib::card_is_able_to_decrease_attack_as_cost },
+	{ "IsAbleToDecreaseDefenseAsCost", scriptlib::card_is_able_to_decrease_defense_as_cost },
 	{ "IsReleasable", scriptlib::card_is_releasable },
 	{ "IsReleasableByEffect", scriptlib::card_is_releasable_by_effect },
 	{ "IsDiscardable", scriptlib::card_is_discardable },

libcard.cpp

@@ -2130,6 +2130,34 @@ int32 scriptlib::card_is_able_to_remove_as_cost(lua_State *L) {
 		lua_pushboolean(L, 0);
 	return 1;
 }
+int32 scriptlib::card_is_able_to_decrease_attack_as_cost(lua_State *L) {
+	check_param_count(L, 1);
+	check_param(L, PARAM_TYPE_CARD, 1);
+	card* pcard = *(card**) lua_touserdata(L, 1);
+	uint32 p = pcard->pduel->game_field->core.reason_player;
+	int32 val = 0;
+	if(lua_gettop(L) > 1)
+		val = lua_tointeger(L, 2);
+	if(pcard->is_attack_decreasable_as_cost(p, val))
+		lua_pushboolean(L, 1);
+	else
+		lua_pushboolean(L, 0);
+	return 1;
+}
+int32 scriptlib::card_is_able_to_decrease_defense_as_cost(lua_State *L) {
+	check_param_count(L, 1);
+	check_param(L, PARAM_TYPE_CARD, 1);
+	card* pcard = *(card**) lua_touserdata(L, 1);
+	uint32 p = pcard->pduel->game_field->core.reason_player;
+	int32 val = 0;
+	if(lua_gettop(L) > 1)
+		val = lua_tointeger(L, 2);
+	if(pcard->is_defense_decreasable_as_cost(p, val))
+		lua_pushboolean(L, 1);
+	else
+		lua_pushboolean(L, 0);
+	return 1;
+}
 int32 scriptlib::card_is_releasable(lua_State *L) {
 	check_param_count(L, 1);
 	check_param(L, PARAM_TYPE_CARD, 1);

scriptlib.h

@@ -207,6 +207,8 @@ public:
 	static int32 card_is_able_to_extra_as_cost(lua_State *L);
 	static int32 card_is_able_to_deck_or_extra_as_cost(lua_State *L);
 	static int32 card_is_able_to_remove_as_cost(lua_State *L);
+	static int32 card_is_able_to_decrease_attack_as_cost(lua_State *L);
+	static int32 card_is_able_to_decrease_defense_as_cost(lua_State *L);
 	static int32 card_is_releasable(lua_State *L);
 	static int32 card_is_releasable_by_effect(lua_State *L);
 	static int32 card_is_discardable(lua_State *L);