Restore level 50 experience cap from Diablo

Source/playerdat.cpp

@@ -20,7 +20,7 @@ namespace devilution {
 namespace {
 constexpr uint8_t MaxCharacterLevel = 50;
 /** Specifies the experience point limit of each level. */
-const std::array<uint32_t, MaxCharacterLevel> ExpLvlsTbl {
+const std::array<uint32_t, MaxCharacterLevel + 1> ExpLvlsTbl {
 	0,
 	2000,
 	4620,
@@ -70,13 +70,14 @@ const std::array<uint32_t, MaxCharacterLevel> ExpLvlsTbl {
 	733825617,
 	892680222,
 	1082908612,
-	1310707109
+	1310707109,
+	1583495809
 };
 } // namespace
 
 uint32_t GetNextExperienceThresholdForLevel(unsigned level)
 {
-	return ExpLvlsTbl[std::min<size_t>(level, ExpLvlsTbl.size() - 1)];
+	return ExpLvlsTbl[std::min<size_t>(level, static_cast<size_t>(GetMaximumCharacterLevel()))];
 }
 
 uint8_t GetMaximumCharacterLevel()

Source/qol/xpbar.cpp

@@ -128,7 +128,7 @@ bool CheckXPBarInfo()
 		// Show a maximum level indicator for max level players.
 		InfoColor = UiFlags::ColorWhitegold;
 
-		AddPanelString(fmt::format(fmt::runtime(_("Experience: {:s}")), FormatInteger(GetNextExperienceThresholdForLevel(charLevel - 1))));
+		AddPanelString(fmt::format(fmt::runtime(_("Experience: {:s}")), FormatInteger(player._pExperience)));
 		AddPanelString(_("Maximum Level"));
 
 		return true;

test/writehero_test.cpp

@@ -323,7 +323,7 @@ void AssertPlayer(Player &player)
 	ASSERT_EQ(player._pMaxHP, 16640);
 	ASSERT_EQ(player._pMana, 14624);
 	ASSERT_EQ(player._pMaxMana, 14624);
-	ASSERT_EQ(player.getNextExperienceThreshold(), 1310707109);
+	ASSERT_EQ(player.getNextExperienceThreshold(), 1583495809);
 	ASSERT_EQ(player._pMagResist, 75);
 	ASSERT_EQ(player._pFireResist, 16);
 	ASSERT_EQ(player._pLghtResist, 75);