Debug: Add possibility to specify amount of gold in GiveGold cmd

Currently in GiveGold and TakeGold commands in debug.cpp we only have a
possibility to flood our inventory with gold, this patch adds a
possibility to either specify amount of gold to be added or just write
"max" which will preserve native functionality of those commands, by
clearing all gold or giving max gold possible (depending on the amount
of free slots in inventory).

Source/debug.cpp

@@ -167,20 +167,46 @@ std::string DebugCmdGiveGoldCheat(const std::string_view parameter)
 	Player &myPlayer = *MyPlayer;
 	std::string cmdLabel = "[givegold] ";
 
+	int goldToAdd = 0;
+
+	if (parameter.empty())
+		goldToAdd = GOLD_MAX_LIMIT * InventoryGridCells;
+	else
+		goldToAdd = ParseInt<int>(parameter, /*min=*/1).value_or(1);
+
+	const int goldAmountBefore = myPlayer._pGold;
 	for (int8_t &itemIndex : myPlayer.InvGrid) {
-		if (itemIndex != 0)
+		if (itemIndex < 0)
 			continue;
 
-		Item &goldItem = myPlayer.InvList[myPlayer._pNumInv];
-		MakeGoldStack(goldItem, GOLD_MAX_LIMIT);
-		myPlayer._pNumInv++;
-		itemIndex = myPlayer._pNumInv;
+		Item &item = myPlayer.InvList[itemIndex != 0 ? itemIndex - 1 : myPlayer._pNumInv];
 
-		myPlayer._pGold += goldItem._ivalue;
+		if (itemIndex != 0) {
+			if ((!item.isGold() && !item.isEmpty()) || (item.isGold() && item._ivalue == GOLD_MAX_LIMIT))
+				continue;
+		} else {
+			if (item.isEmpty()) {
+				MakeGoldStack(item, 0);
+				myPlayer._pNumInv++;
+				itemIndex = myPlayer._pNumInv;
+			}
+		}
+
+		int goldThatCanBeAdded = (GOLD_MAX_LIMIT - item._ivalue);
+		if (goldThatCanBeAdded >= goldToAdd) {
+			item._ivalue += goldToAdd;
+			myPlayer._pGold += goldToAdd;
+			break;
+		}
+
+		item._ivalue += goldThatCanBeAdded;
+		goldToAdd -= goldThatCanBeAdded;
+		myPlayer._pGold += goldThatCanBeAdded;
 	}
+
 	CalcPlrInv(myPlayer, true);
 
-	return StrCat(cmdLabel, "Set your gold to", myPlayer._pGold, ".");
+	return StrCat(cmdLabel, "Set your gold to ", myPlayer._pGold, ", added ", myPlayer._pGold - goldAmountBefore, ".");
 }
 
 std::string DebugCmdTakeGoldCheat(const std::string_view parameter)
@@ -1200,7 +1226,7 @@ std::string DebugCmdClearSearch(const std::string_view parameter)
 
 std::vector<DebugCmdItem> DebugCmdList = {
 	{ "help", "Prints help overview or help for a specific command.", "({command})", &DebugCmdHelp },
-	{ "givegold", "Fills the inventory with gold.", "", &DebugCmdGiveGoldCheat },
+	{ "givegold", "Gives player {amount} of gold or max amount if didn't specify.", "{amount}", &DebugCmdGiveGoldCheat },
 	{ "givelvl", "Levels the player up (min 1 level or {levels}).", "({levels})", &DebugCmdLevelUp },
 	{ "maxstats", "Sets all stat values to maximum.", "", &DebugCmdMaxStats },
 	{ "minstats", "Sets all stat values to minimum.", "", &DebugCmdMinStats },