Introduce Player::plrIsOnSetLevel

Source/loadsave.cpp

@@ -544,6 +544,12 @@ void LoadPlayer(LoadHelper &file, Player &player)
 	// Omit pointer _pDData
 	// Omit pointer _pBData
 	// Omit pointer pReserved
+
+	// Ensure plrIsOnSetLevel and plrlevel is correctly initialized, cause in vanilla sometimes plrlevel is not updated to setlvlnum
+	if (setlevel)
+		player.setLevel(setlvlnum);
+	else
+		player.setLevel(currlevel);
 }
 
 bool gbSkipSync = false;

Source/player.cpp

@@ -3267,6 +3267,7 @@ StartNewLvl(int pnum, interface_mode fom, int lvl)
 		break;
 	case WM_DIABSETLVL:
 		setlvlnum = (_setlevels)lvl;
+		player.setLevel(setlvlnum);
 		break;
 	case WM_DIABTWARPUP:
 		myPlayer.pTownWarps |= 1 << (leveltype - 2);

Source/player.h

@@ -223,6 +223,7 @@ struct Player {
 	int destParam3;
 	int destParam4;
 	uint8_t plrlevel;
+	bool plrIsOnSetLevel;
 	ActorPosition position;
 	Direction _pdir; // Direction faced by player (direction enum)
 	int _pgfxnum;    // Bitmask indicating what variant of the sprite the player is using. Lower byte define weapon (PlayerWeaponGraphic) and higher values define armour (starting with PlayerArmorGraphic)
@@ -710,21 +711,30 @@ struct Player {
 	/** @brief Checks if the player is on the same level as the local player (MyPlayer). */
 	bool isOnActiveLevel() const
 	{
-		return currlevel == this->plrlevel;
+		if (setlevel)
+			return isOnLevel(setlvlnum);
+		return isOnLevel(currlevel);
 	}
 
 	/** @brief Checks if the player is on the correspondig level. */
 	bool isOnLevel(uint8_t level) const
 	{
-		return this->plrlevel == level;
+		return !this->plrIsOnSetLevel && this->plrlevel == level;
+	}
+	/** @brief Checks if the player is on the correspondig level. */
+	bool isOnLevel(_setlevels level) const
+	{
+		return this->plrIsOnSetLevel && this->plrlevel == static_cast<uint8_t>(level);
 	}
 	void setLevel(uint8_t level)
 	{
 		this->plrlevel = level;
+		this->plrIsOnSetLevel = false;
 	}
 	void setLevel(_setlevels level)
 	{
 		this->plrlevel = static_cast<uint8_t>(level);
+		this->plrIsOnSetLevel = true;
 	}
 };