Add Chat / Pastes / Formatting (#682)

* Initial fixes for ContainerSetSlotPacket and CraftItemPacket

* Chat: paste, history, § formatting, 1-9 block when open (Windows64)

Made-with: Cursor

* static_cast refactor

1 files changed, 110 insertions, 16 deletions

diff --git a/Minecraft.Client/ChatScreen.cpp b/Minecraft.Client/ChatScreen.cpp
index b68e6cac..543cab76 100644
--- a/Minecraft.Client/ChatScreen.cpp
+++ b/Minecraft.Client/ChatScreen.cpp
@@ -1,14 +1,27 @@
 #include "stdafx.h"
 #include "ChatScreen.h"
+#include "ClientConnection.h"
+#include "Font.h"
 #include "MultiplayerLocalPlayer.h"
 #include "..\Minecraft.World\SharedConstants.h"
 #include "..\Minecraft.World\StringHelpers.h"
+#include "..\Minecraft.World\ChatPacket.h"
 
 const wstring ChatScreen::allowedChars = SharedConstants::acceptableLetters;
+vector<wstring> ChatScreen::s_chatHistory;
+int ChatScreen::s_historyIndex = -1;
+wstring ChatScreen::s_historyDraft;
+
+bool ChatScreen::isAllowedChatChar(wchar_t c)
+{
+	return c >= 0x20 && (c == L'\u00A7' || allowedChars.empty() || allowedChars.find(c) != wstring::npos);
+}
 
 ChatScreen::ChatScreen()
 {
 	frame = 0;
+	cursorIndex = 0;
+	s_historyIndex = -1;
 }
 
 void ChatScreen::init()
@@ -24,6 +37,50 @@ void ChatScreen::removed()
 void ChatScreen::tick()
 {
 	frame++;
+	if (cursorIndex > static_cast<int>(message.length()))
+		cursorIndex = static_cast<int>(message.length());
+}
+
+void ChatScreen::handlePasteRequest()
+{
+	wstring pasted = Screen::getClipboard();
+	for (size_t i = 0; i < pasted.length() && static_cast<int>(message.length()) < SharedConstants::maxChatLength; i++)
+	{
+		if (isAllowedChatChar(pasted[i]))
+		{
+			message.insert(cursorIndex, 1, pasted[i]);
+			cursorIndex++;
+		}
+	}
+}
+
+void ChatScreen::applyHistoryMessage()
+{
+	message = s_historyIndex >= 0 ? s_chatHistory[s_historyIndex] : s_historyDraft;
+	cursorIndex = static_cast<int>(message.length());
+}
+
+void ChatScreen::handleHistoryUp()
+{
+	if (s_chatHistory.empty()) return;
+	if (s_historyIndex == -1)
+	{
+		s_historyDraft = message;
+		s_historyIndex = static_cast<int>(s_chatHistory.size()) - 1;
+	}
+	else if (s_historyIndex > 0)
+		s_historyIndex--;
+	applyHistoryMessage();
+}
+
+void ChatScreen::handleHistoryDown()
+{
+	if (s_chatHistory.empty()) return;
+	if (s_historyIndex < static_cast<int>(s_chatHistory.size()) - 1)
+		s_historyIndex++;
+	else
+		s_historyIndex = -1;
+	applyHistoryMessage();
 }
 
 void ChatScreen::keyPressed(wchar_t ch, int eventKey)
@@ -35,31 +92,67 @@ void ChatScreen::keyPressed(wchar_t ch, int eventKey)
     }
     if (eventKey == Keyboard::KEY_RETURN)
 	{
-        wstring msg = trimString(message);
-        if (msg.length() > 0)
+        wstring trim = trimString(message);
+        if (trim.length() > 0)
 		{
-            wstring trim = trimString(message);
             if (!minecraft->handleClientSideCommand(trim))
 			{
-                minecraft->player->chat(trim);
+                MultiplayerLocalPlayer* mplp = dynamic_cast<MultiplayerLocalPlayer*>(minecraft->player.get());
+                if (mplp && mplp->connection)
+                    mplp->connection->send(shared_ptr<ChatPacket>(new ChatPacket(trim)));
+            }
+            if (s_chatHistory.empty() || s_chatHistory.back() != trim)
+			{
+                s_chatHistory.push_back(trim);
+                if (s_chatHistory.size() > CHAT_HISTORY_MAX)
+                    s_chatHistory.erase(s_chatHistory.begin());
             }
         }
         minecraft->setScreen(NULL);
         return;
     }
-    if (eventKey == Keyboard::KEY_BACK && message.length() > 0) message = message.substr(0, message.length() - 1);
-    if (allowedChars.find(ch) >= 0 && message.length() < SharedConstants::maxChatLength)
+    if (eventKey == Keyboard::KEY_UP)   { handleHistoryUp();   return; }
+    if (eventKey == Keyboard::KEY_DOWN) { handleHistoryDown(); return; }
+    if (eventKey == Keyboard::KEY_LEFT)
 	{
-        message += ch;
+        if (cursorIndex > 0)
+            cursorIndex--;
+        return;
+    }
+    if (eventKey == Keyboard::KEY_RIGHT)
+	{
+        if (cursorIndex < static_cast<int>(message.length()))
+            cursorIndex++;
+        return;
+    }
+    if (eventKey == Keyboard::KEY_BACK && cursorIndex > 0)
+	{
+        message.erase(cursorIndex - 1, 1);
+        cursorIndex--;
+        return;
+    }
+    if (isAllowedChatChar(ch) && static_cast<int>(message.length()) < SharedConstants::maxChatLength)
+	{
+        message.insert(cursorIndex, 1, ch);
+        cursorIndex++;
     }
-
 }
 
 void ChatScreen::render(int xm, int ym, float a)
 {
     fill(2, height - 14, width - 2, height - 2, 0x80000000);
-    drawString(font, L"> " + message + (frame / 6 % 2 == 0 ? L"_" : L""), 4, height - 12, 0xe0e0e0);
-
+    const wstring prefix = L"> ";
+    int x = 4;
+    drawString(font, prefix, x, height - 12, 0xe0e0e0);
+    x += font->width(prefix);
+    wstring beforeCursor = message.substr(0, cursorIndex);
+    wstring afterCursor = message.substr(cursorIndex);
+    drawStringLiteral(font, beforeCursor, x, height - 12, 0xe0e0e0);
+    x += font->widthLiteral(beforeCursor);
+    if (frame / 6 % 2 == 0)
+        drawString(font, L"_", x, height - 12, 0xe0e0e0);
+    x += font->width(L"_");
+    drawStringLiteral(font, afterCursor, x, height - 12, 0xe0e0e0);
     Screen::render(xm, ym, a);
 }
 
@@ -71,13 +164,15 @@ void ChatScreen::mouseClicked(int x, int y, int buttonNum)
 		{
 			if (message.length() > 0 && message[message.length()-1]!=L' ')
 			{
-                message += L" ";
+                message = message.substr(0, cursorIndex) + L" " + message.substr(cursorIndex);
+                cursorIndex++;
             }
-            message += minecraft->gui->selectedName;
-            unsigned int maxLength = SharedConstants::maxChatLength;
-            if (message.length() > maxLength)
+            size_t nameLen = minecraft->gui->selectedName.length();
+            size_t insertLen = (message.length() + nameLen <= SharedConstants::maxChatLength) ? nameLen : (SharedConstants::maxChatLength - message.length());
+            if (insertLen > 0)
 			{
-                message = message.substr(0, maxLength);
+                message = message.substr(0, cursorIndex) + minecraft->gui->selectedName.substr(0, insertLen) + message.substr(cursorIndex);
+                cursorIndex += static_cast<int>(insertLen);
             }
         }
 		else
@@ -85,5 +180,4 @@ void ChatScreen::mouseClicked(int x, int y, int buttonNum)
             Screen::mouseClicked(x, y, buttonNum);
         }
     }
-
 }
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