remove FLIP_SET_AVAILABLE

face down card cannot activate effect generally
硫酸のたまった落とし穴  is not special now

common.h

@@ -62,7 +62,6 @@ struct card_sort {
 #define POS_DEFENSE				0xc
 //Flip effect flags
 #define NO_FLIP_EFFECT			0x10000
-#define FLIP_SET_AVAILABLE		0x20000
 
 //Types
 #define TYPE_MONSTER		0x1			//

effect.cpp

@@ -262,10 +262,7 @@ int32 effect::is_activateable(uint8 playerid, const tevent& e, int32 neglect_con
 			if(!(phandler->get_type() & TYPE_MONSTER) && (get_active_type() & TYPE_MONSTER))
 				return FALSE;
 			if(!neglect_faceup && (phandler->current.location & (LOCATION_ONFIELD | LOCATION_REMOVED))) {
-				// effects which can be activated while face-down:
-				// 1. effects with EFFECT_FLAG_SET_AVAILABLE
-				// 2. events with FLIP_SET_AVAILABLE
-				if(!phandler->is_position(POS_FACEUP) && !is_flag(EFFECT_FLAG_SET_AVAILABLE) && (code != EVENT_FLIP || !(e.event_value & (FLIP_SET_AVAILABLE >> 16))))
+				if(!phandler->is_position(POS_FACEUP) && !is_flag(EFFECT_FLAG_SET_AVAILABLE))
 					return FALSE;
 				if(phandler->is_position(POS_FACEUP) && !phandler->is_status(STATUS_EFFECT_ENABLED))
 					return FALSE;

libduel.cpp

@@ -715,7 +715,6 @@ int32 scriptlib::duel_change_form(lua_State *L) {
 	if(top > 3) du = (uint32)lua_tointeger(L, 4);
 	if(top > 4) dd = (uint32)lua_tointeger(L, 5);
 	if(top > 5 && lua_toboolean(L, 6)) flag |= NO_FLIP_EFFECT;
-	if(top > 6 && lua_toboolean(L, 7)) flag |= FLIP_SET_AVAILABLE;
 	if(pcard) {
 		field::card_set cset;
 		cset.insert(pcard);