added auto completion of nicknames and highlighted nicknames in chat. Closes #218

src/game/client/components/chat.cpp

@@ -35,6 +35,10 @@ void CChat::OnReset()
 	m_Show = false;
 	m_InputUpdate = false;
 	m_ChatStringOffset = 0;
+	m_CompletionChosen = -1;
+	m_aCompletionBuffer[0] = 0;
+	m_PlaceholderOffset = 0;
+	m_PlaceholderLength = 0;
 }
 
 void CChat::OnRelease()
@@ -104,8 +108,58 @@ bool CChat::OnInput(IInput::CEvent e)
 		m_Mode = MODE_NONE;
 		m_pClient->OnRelease();
 	}
+	if(e.m_Flags&IInput::FLAG_PRESS && e.m_Key == KEY_TAB)
+	{
+		// fill the completion buffer
+		if(m_CompletionChosen < 0)
+		{
+			const char *pCursor = m_Input.GetString()+m_Input.GetCursorOffset();
+			for(int Count = 0; Count < m_Input.GetCursorOffset() && *(pCursor-1) != ' '; --pCursor, ++Count);
+			m_PlaceholderOffset = pCursor-m_Input.GetString();
+
+			for(m_PlaceholderLength = 0; *pCursor && *pCursor != ' '; ++pCursor)
+				++m_PlaceholderLength;
+			
+			str_copy(m_aCompletionBuffer, m_Input.GetString()+m_PlaceholderOffset, min(static_cast<int>(sizeof(m_aCompletionBuffer)), m_PlaceholderLength+1));
+		}
+
+		// find next possible name
+		const char *pCompletionString = 0;
+		m_CompletionChosen = (m_CompletionChosen+1)%MAX_CLIENTS;
+		for(int i = 0; i < MAX_CLIENTS; ++i)
+		{
+			int Index = (m_CompletionChosen+i)%MAX_CLIENTS;
+			if(!m_pClient->m_Snap.m_paPlayerInfos[Index])
+				continue;
+
+			if(str_find_nocase(m_pClient->m_aClients[Index].m_aName, m_aCompletionBuffer))
+			{
+				pCompletionString = m_pClient->m_aClients[Index].m_aName;
+				m_CompletionChosen = Index;
+				break;
+			}
+		}
+
+		// insert the name
+		if(pCompletionString)
+		{
+			char aBuf[256];
+			str_copy(aBuf, m_Input.GetString(), min(static_cast<int>(sizeof(aBuf)), m_PlaceholderOffset+1));
+			str_append(aBuf, pCompletionString, sizeof(aBuf));
+			str_append(aBuf, m_Input.GetString()+m_PlaceholderOffset+m_PlaceholderLength, sizeof(aBuf));
+			m_PlaceholderLength = str_length(pCompletionString);
+			m_OldChatStringLength = m_Input.GetLength();
+			m_Input.Set(aBuf);
+			m_Input.SetCursorOffset(m_PlaceholderOffset+m_PlaceholderLength);
+			m_InputUpdate = true;
+		}
+	}
 	else
 	{
+		// reset name completion process
+		if(e.m_Flags&IInput::FLAG_PRESS && e.m_Key != KEY_TAB)
+			m_CompletionChosen = -1;
+
 		m_OldChatStringLength = m_Input.GetLength();
 		m_Input.ProcessInput(e);
 		m_InputUpdate = true;
@@ -129,6 +183,7 @@ void CChat::EnableMode(int Team)
 		
 		m_Input.Clear();
 		Input()->ClearEvents();
+		m_CompletionChosen = -1;
 	}
 }
 
@@ -167,6 +222,7 @@ void CChat::AddLine(int ClientId, int Team, const char *pLine)
 		m_aLines[m_CurrentLine].m_ClientId = ClientId;
 		m_aLines[m_CurrentLine].m_Team = Team;
 		m_aLines[m_CurrentLine].m_NameColor = -2;
+		m_aLines[m_CurrentLine].m_Highlighted = str_find_nocase(pLine, m_pClient->m_aClients[m_pClient->m_Snap.m_LocalCid].m_aName) != 0;
 
 		if(ClientId == -1) // server message
 		{
@@ -309,6 +365,8 @@ void CChat::OnRender()
 		// render line
 		if(m_aLines[r].m_ClientId == -1)
 			TextRender()->TextColor(1.0f, 1.0f, 0.5f, 1.0f); // system
+		else if(m_aLines[r].m_Highlighted)
+			TextRender()->TextColor(1.0f, 0.5f, 0.5f, 1.0f); // highlighted
 		else if(m_aLines[r].m_Team)
 			TextRender()->TextColor(0.65f, 1.0f, 0.65f, 1.0f); // team message
 		else

src/game/client/components/chat.h

@@ -23,6 +23,7 @@ class CChat : public CComponent
 		int m_NameColor;
 		char m_aName[64];
 		char m_aText[512];
+		bool m_Highlighted;
 	};
 
 	CLine m_aLines[MAX_LINES];
@@ -41,6 +42,10 @@ class CChat : public CComponent
 	bool m_InputUpdate;
 	int m_ChatStringOffset;
 	int m_OldChatStringLength;
+	int m_CompletionChosen;
+	char m_aCompletionBuffer[256];
+	int m_PlaceholderOffset;
+	int m_PlaceholderLength;
 	
 	static void ConSay(IConsole::IResult *pResult, void *pUserData);
 	static void ConSayTeam(IConsole::IResult *pResult, void *pUserData);

src/game/client/lineinput.h

@@ -28,6 +28,7 @@ public:
 	const char *GetString() const { return m_Str; }
 	int GetLength() const { return m_Len; }
 	int GetCursorOffset() const { return m_CursorPos; }
+	void SetCursorOffset(int Offset) { m_CursorPos = Offset > m_Len ? m_Len : Offset < 0 ? 0 : Offset; }
 };
 
 #endif