Use SDL_StartTextInput for gold drop dialog

Source/control.cpp

@@ -1684,9 +1684,6 @@ void control_drop_gold(char vkey)
 		return;
 	}
 
-	char input[6];
-	memset(input, 0, sizeof(input));
-	snprintf(input, sizeof(input), "%i", dropGoldValue);
 	if (vkey == DVL_VK_RETURN) {
 		if (dropGoldValue > 0)
 			RemoveGold(myPlayer, initialDropGoldIndex);
@@ -1695,17 +1692,7 @@ void control_drop_gold(char vkey)
 		CloseGoldDrop();
 		dropGoldValue = 0;
 	} else if (vkey == DVL_VK_BACK) {
-		input[strlen(input) - 1] = '\0';
-		dropGoldValue = atoi(input);
-	} else if (vkey - '0' >= 0 && vkey - '0' <= 9) {
-		if (dropGoldValue != 0 || atoi(input) <= initialDropGoldValue) {
-			input[strlen(input)] = vkey;
-			if (atoi(input) > initialDropGoldValue)
-				return;
-		} else {
-			input[0] = vkey;
-		}
-		dropGoldValue = atoi(input);
+		dropGoldValue = dropGoldValue / 10;
 	}
 }
 
@@ -1895,7 +1882,24 @@ void DiabloHotkeyMsg(uint32_t dwMsg)
 
 void CloseGoldDrop()
 {
+	if (!dropGoldFlag)
+		return;
 	dropGoldFlag = false;
+	SDL_StopTextInput();
+}
+
+void GoldDropNewText(string_view text)
+{
+	for (char vkey : text) {
+		int digit = vkey - '0';
+		if (digit >= 0 && digit <= 9) {
+			int newGoldValue = dropGoldValue * 10;
+			newGoldValue += digit;
+			if (newGoldValue <= initialDropGoldValue) {
+				dropGoldValue = newGoldValue;
+			}
+		}
+	}
 }
 
 } // namespace devilution

Source/control.h

@@ -181,6 +181,7 @@ void control_new_text(string_view text);
 bool control_presskeys(int vkey);
 void DiabloHotkeyMsg(uint32_t dwMsg);
 void CloseGoldDrop();
+void GoldDropNewText(string_view text);
 extern Rectangle ChrBtnsRect[4];
 
 } // namespace devilution

Source/inv.cpp

@@ -1166,11 +1166,16 @@ void StartGoldDrop()
 	else
 		initialDropGoldValue = myPlayer.SpdList[pcursinvitem - INVITEM_BELT_FIRST]._ivalue;
 
-	dropGoldFlag = true;
-	dropGoldValue = 0;
-
 	if (talkflag)
 		control_reset_talk();
+
+	Point start = GetPanelPosition(UiPanels::Inventory, { 67, 128 });
+	SDL_Rect rect = { start.x, start.y, 180, 20 };
+	SDL_SetTextInputRect(&rect);
+
+	dropGoldFlag = true;
+	dropGoldValue = 0;
+	SDL_StartTextInput();
 }
 
 } // namespace

Source/miniwin/misc_msg.cpp

@@ -481,12 +481,15 @@ bool FetchMessage_Real(tagMSG *lpMsg)
 	case SDL_KEYDOWN:
 	case SDL_KEYUP: {
 #ifdef USE_SDL1
-		if (gbRunGame && IsTalkActive()) {
+		if (gbRunGame && (IsTalkActive() || dropGoldFlag)) {
 			Uint16 unicode = e.key.keysym.unicode;
 			if (unicode >= ' ') {
 				std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> convert;
 				std::string utf8 = convert.to_bytes(unicode);
-				control_new_text(utf8);
+				if (IsTalkActive())
+					control_new_text(utf8);
+				if (dropGoldFlag)
+					GoldDropNewText(utf8);
 			}
 		}
 #endif
@@ -559,6 +562,10 @@ bool FetchMessage_Real(tagMSG *lpMsg)
 			control_new_text(e.text.text);
 			break;
 		}
+		if (gbRunGame && dropGoldFlag) {
+			GoldDropNewText(e.text.text);
+			break;
+		}
 		return FalseAvail("SDL_TEXTINPUT", e.text.windowID);
 	case SDL_WINDOWEVENT:
 		switch (e.window.event) {