Merge pull request #316 from Fluorohydride/union

Card.CheckUnionTarget()

effect.h

@@ -275,6 +275,7 @@ inline effect_flag operator|(effect_flag flag1, effect_flag flag2)
 #define EFFECT_DUAL_STATUS				75	//
 #define EFFECT_EQUIP_LIMIT				76	//
 #define EFFECT_DUAL_SUMMONABLE			77	//
+#define EFFECT_UNION_LIMIT				78	//
 #define EFFECT_REVERSE_DAMAGE			80	//
 #define EFFECT_REVERSE_RECOVER			81	//
 #define EFFECT_CHANGE_DAMAGE			82	//

libcard.cpp

@@ -1303,6 +1303,20 @@ int32 scriptlib::card_check_equip_target(lua_State *L) {
 		lua_pushboolean(L, 0);
 	return 1;
 }
+int32 scriptlib::card_check_union_target(lua_State *L) {
+	check_param_count(L, 1);
+	check_param(L, PARAM_TYPE_CARD, 1);
+	check_param(L, PARAM_TYPE_CARD, 2);
+	card* pcard = *(card**) lua_touserdata(L, 1);
+	card* target = *(card**) lua_touserdata(L, 2);
+	if(pcard->is_affected_by_effect(EFFECT_UNION_LIMIT, target)
+		&& ((!pcard->is_affected_by_effect(EFFECT_OLDUNION_STATUS) || target->get_union_count() == 0)
+			&& (!pcard->is_affected_by_effect(EFFECT_UNION_STATUS) || target->get_old_union_count() == 0)))
+		lua_pushboolean(L, 1);
+	else
+		lua_pushboolean(L, 0);
+	return 1;
+}
 int32 scriptlib::card_get_union_count(lua_State *L) {
 	check_param_count(L, 1);
 	check_param(L, PARAM_TYPE_CARD, 1);
@@ -3221,6 +3235,7 @@ static const struct luaL_Reg cardlib[] = {
 	{ "GetEquipTarget", scriptlib::card_get_equip_target },
 	{ "GetPreviousEquipTarget", scriptlib::card_get_pre_equip_target },
 	{ "CheckEquipTarget", scriptlib::card_check_equip_target },
+	{ "CheckUnionTarget", scriptlib::card_check_union_target },
 	{ "GetUnionCount", scriptlib::card_get_union_count },
 	{ "GetOverlayGroup", scriptlib::card_get_overlay_group },
 	{ "GetOverlayCount", scriptlib::card_get_overlay_count },

scriptlib.h

@@ -138,6 +138,7 @@ public:
 	static int32 card_get_equip_target(lua_State *L);
 	static int32 card_get_pre_equip_target(lua_State *L);
 	static int32 card_check_equip_target(lua_State *L);
+	static int32 card_check_union_target(lua_State *L);
 	static int32 card_get_union_count(lua_State *L);
 	static int32 card_get_overlay_group(lua_State *L);
 	static int32 card_get_overlay_count(lua_State *L);