Item entity merging refactor - minetest.git - modified minetest for gpcfs purposes

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author	est31 <MTest31@outlook.com>	2015-05-15 00:03:19 +0200
committer	est31 <MTest31@outlook.com>	2015-05-15 00:06:18 +0200
commit	178f536f082fd586a13d03ec9aa0775f1c009d5e (patch)
tree	7f75d914abeab08a7621543f61421483ac955f8c /mods/mods_here.txt
parent	b70e67df8c55c0ccf3c95f9c45e194d1433ba53f (diff)
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Item entity merging refactor

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/* Minetest Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com> This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef CHAT_HEADER #define CHAT_HEADER #include "irrlichttypes_bloated.h" #include <string> // Chat console related classes, only used by the client struct ChatLine { // age in seconds f32 age; // name of sending player, or empty if sent by server std::wstring name; // message text std::wstring text; ChatLine(std::wstring a_name, std::wstring a_text): age(0.0), name(a_name), text(a_text) { } }; struct ChatFormattedFragment { // text string std::wstring text; // starting column u32 column; // formatting //u8 bold:1; }; struct ChatFormattedLine { // Array of text fragments core::array<ChatFormattedFragment> fragments; // true if first line of one formatted ChatLine bool first; }; class ChatBuffer { public: ChatBuffer(u32 scrollback); ~ChatBuffer(); // Append chat line // Removes oldest chat line if scrollback size is reached void addLine(std::wstring name, std::wstring text); // Remove all chat lines void clear(); // Get number of lines currently in buffer. u32 getLineCount() const; // Get scrollback size, maximum number of lines in buffer. u32 getScrollback() const; // Get reference to i-th chat line. const ChatLine& getLine(u32 index) const; // Increase each chat line's age by dtime. void step(f32 dtime); // Delete oldest N chat lines. void deleteOldest(u32 count); // Delete lines older than maxAge. void deleteByAge(f32 maxAge); // Get number of columns, 0 if reformat has not been called yet. u32 getColumns() const; // Get number of rows, 0 if reformat has not been called yet. u32 getRows() const; // Update console size and reformat all formatted lines. void reformat(u32 cols, u32 rows); // Get formatted line for a given row (0 is top of screen). // Only valid after reformat has been called at least once const ChatFormattedLine& getFormattedLine(u32 row) const; // Scrolling in formatted buffer (relative) // positive rows == scroll up, negative rows == scroll down void scroll(s32 rows); // Scrolling in formatted buffer (absolute) void scrollAbsolute(s32 scroll); // Scroll to bottom of buffer (newest) void scrollBottom(); // Scroll to top of buffer (oldest) void scrollTop(); // Format a chat line for the given number of columns. // Appends the formatted lines to the destination array and // returns the number of formatted lines. u32 formatChatLine(const ChatLine& line, u32 cols, core::array<ChatFormattedLine>& destination) const; protected: s32 getTopScrollPos() const; s32 getBottomScrollPos() const; private: // Scrollback size u32 m_scrollback; // Array of unformatted chat lines core::array<ChatLine> m_unformatted; // Number of character columns in console u32 m_cols; // Number of character rows in console u32 m_rows; // Scroll position (console's top line index into m_formatted) s32 m_scroll; // Array of formatted lines core::array<ChatFormattedLine> m_formatted; // Empty formatted line, for error returns ChatFormattedLine m_empty_formatted_line; }; class ChatPrompt { public: ChatPrompt(std::wstring prompt, u32 history_limit); ~ChatPrompt(); // Input character void input(wchar_t ch); // Submit, clear and return current line std::wstring submit(); // Clear the current line void clear(); // Replace the current line with the given text void replace(std::wstring line); // Select previous command from history void historyPrev(); // Select next command from history void historyNext(); // Nick completion void nickCompletion(const core::list<std::wstring>& names, bool backwards); // Update console size and reformat the visible portion of the prompt void reformat(u32 cols); // Get visible portion of the prompt. std::wstring getVisiblePortion() const; // Get cursor position (relative to visible portion). -1 if invalid s32 getVisibleCursorPosition() const; // Cursor operations enum CursorOp { CURSOROP_MOVE, CURSOROP_DELETE }; // Cursor operation direction enum CursorOpDir { CURSOROP_DIR_LEFT, CURSOROP_DIR_RIGHT }; // Cursor operation scope enum CursorOpScope { CURSOROP_SCOPE_CHARACTER, CURSOROP_SCOPE_WORD, CURSOROP_SCOPE_LINE }; // Cursor operation // op specifies whether it's a move or delete operation // dir specifies whether the operation goes left or right // scope specifies how far the operation will reach (char/word/line) // Examples: // cursorOperation(CURSOROP_MOVE, CURSOROP_DIR_RIGHT, CURSOROP_SCOPE_LINE) // moves the cursor to the end of the line. // cursorOperation(CURSOROP_DELETE, CURSOROP_DIR_LEFT, CURSOROP_SCOPE_WORD) // deletes the word to the left of the cursor. void cursorOperation(CursorOp op, CursorOpDir dir, CursorOpScope scope); protected: // set m_view to ensure that 0 <= m_view <= m_cursor < m_view + m_cols // if line can be fully shown, set m_view to zero // else, also ensure m_view <= m_line.size() + 1 - m_cols void clampView(); private: // Prompt prefix std::wstring m_prompt; // Currently edited line std::wstring m_line; // History buffer core::array<std::wstring> m_history; // History index (0 <= m_history_index <= m_history.size()) u32 m_history_index; // Maximum number of history entries u32 m_history_limit; // Number of columns excluding columns reserved for the prompt s32 m_cols; // Start of visible portion (index into m_line) s32 m_view; // Cursor (index into m_line) s32 m_cursor; // Last nick completion start (index into m_line) s32 m_nick_completion_start; // Last nick completion start (index into m_line) s32 m_nick_completion_end; }; class ChatBackend { public: ChatBackend(); ~ChatBackend(); // Add chat message void addMessage(std::wstring name, std::wstring text); // Parse and add unparsed chat message void addUnparsedMessage(std::wstring line); // Get the console buffer ChatBuffer& getConsoleBuffer(); // Get the recent messages buffer ChatBuffer& getRecentBuffer(); // Concatenate all recent messages std::wstring getRecentChat(); // Get the console prompt ChatPrompt& getPrompt(); // Reformat all buffers void reformat(u32 cols, u32 rows); // Clear all recent messages void clearRecentChat(); // Age recent messages void step(float dtime); // Scrolling void scroll(s32 rows); void scrollPageDown(); void scrollPageUp(); private: ChatBuffer m_console_buffer; ChatBuffer m_recent_buffer; ChatPrompt m_prompt; }; #endif


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