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| #pragma once | ||
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| #include "neededHeaders.h" | ||
| #include "definitions.h" | ||
| #include "helperFunctions.h" | ||
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| using namespace std; | ||
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| //*Class to store the informations of the user's "go" command to search a position | ||
| /* | ||
| * quit: flag to denote if the user wants to quit | ||
| * movestogo: number of moves to be palyed within total time (to get increment) | ||
| * movetime: search for the given amount of time | ||
| * time: time to search | ||
| * inc: amount of time to be incremented after each move | ||
| * starttime: starttime(in millisecond) : when the engine started searching a position | ||
| * stoptime: stoptime(in millisecond) : when the engine will stop searching | ||
| * timeset: flag to denote if the searching is to be done for limited time(if not, then searching is to be done upto given depth) | ||
| * stopped: flag to denote if the searching is stopped | ||
| * | ||
| * | ||
| * | ||
| * | ||
| */ | ||
| class UCISearchInfo | ||
| { | ||
| public: | ||
| bool quit; | ||
| int movestogo; | ||
| int movetime; //* -1 denotes that movetime is not set | ||
| int time; //* -1 denotes that time is not set | ||
| int inc; //* 0 denotes that inc is not set | ||
| int starttime; //* 0 denotes that starttime is not set | ||
| int stoptime; //* 0 denotes that stoptime is not set | ||
| bool timeset; | ||
| bool stopped; | ||
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| public: | ||
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| //*constructor | ||
| UCISearchInfo() | ||
| { | ||
| resetUCISearchInfo(); | ||
| } | ||
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| //*reset the properties | ||
| void resetUCISearchInfo() | ||
| { | ||
| quit = false; | ||
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| /* | ||
| * by default we will set "movestogo" to 30 | ||
| * so the engine will use (total time of the current player/ 30) for a single move | ||
| * | ||
| * | ||
| * For example: | ||
| * if white has total time 180 seconds, then the engine will search for 180/30 = 6 seconds (commande : go wtime 180000) | ||
| * in the next move white has total time 174 seconds, so the engine will search for 174/6 seconds | ||
| * ........ and so on | ||
| */ | ||
| movestogo = 30; | ||
| movetime = -1; | ||
| time = -1; | ||
| inc = 0; | ||
| starttime = 0; | ||
| stoptime = 0; | ||
| timeset = false; | ||
| stopped = false; | ||
| } | ||
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| //* a bridge function to interact between search and GUI input | ||
| //*sets stopped=true, if the user has entered something in stdin while the search is going on | ||
| inline void communicateWithGUI() | ||
| { | ||
| //* if time is over | ||
| if (timeset && getTimeInMilliSeconds() > stoptime) | ||
| stopped = true; | ||
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| //* read GUI/user input | ||
| read_input(); | ||
| } | ||
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| private: | ||
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| /* | ||
| * | ||
| * function to listen to GUI's input during search. | ||
| * it's waiting for the user input from STDIN. | ||
| * OS dependent. | ||
| * | ||
| */ | ||
| //*Reference : https://www.youtube.com/watch?v=NBl92Vs0fos&list=PLZ1QII7yudbc-Ky058TEaOstZHVbT-2hg&index=66) | ||
| inline int input_waiting() | ||
| { | ||
| #ifndef WIN32 | ||
| fd_set readfds; | ||
| struct timeval tv; | ||
| FD_ZERO(&readfds); | ||
| FD_SET(fileno(stdin), &readfds); | ||
| tv.tv_sec = 0; | ||
| tv.tv_usec = 0; | ||
| select(16, &readfds, 0, 0, &tv); | ||
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| return (FD_ISSET(fileno(stdin), &readfds)); | ||
| #else | ||
| static int init = 0, pipe; | ||
| static HANDLE inh; | ||
| DWORD dw; | ||
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| if (!init) | ||
| { | ||
| init = 1; | ||
| inh = GetStdHandle(STD_INPUT_HANDLE); | ||
| pipe = !GetConsoleMode(inh, &dw); | ||
| if (!pipe) | ||
| { | ||
| SetConsoleMode(inh, dw & ~(ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT)); | ||
| FlushConsoleInputBuffer(inh); | ||
| } | ||
| } | ||
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| if (pipe) | ||
| { | ||
| if (!PeekNamedPipe(inh, NULL, 0, NULL, &dw, NULL)) | ||
| return 1; | ||
| return dw; | ||
| } | ||
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| else | ||
| { | ||
| GetNumberOfConsoleInputEvents(inh, &dw); | ||
| return dw <= 1 ? 0 : dw; | ||
| } | ||
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| #endif | ||
| } | ||
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| //* reads GUI/user input | ||
| //*Reference : https://www.youtube.com/watch?v=NBl92Vs0fos&list=PLZ1QII7yudbc-Ky058TEaOstZHVbT-2hg&index=66) | ||
| inline void read_input() | ||
| { | ||
| // bytes to read holder | ||
| int bytes; | ||
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| // GUI/user input | ||
| char input[256] = "", *endc; | ||
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| // "listen" to STDIN | ||
| if (input_waiting()) | ||
| { | ||
| // tell engine to stop calculating | ||
| stopped = true; | ||
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| // loop to read bytes from STDIN | ||
| do | ||
| { | ||
| // read bytes from STDIN | ||
| bytes = read(fileno(stdin), input, 256); | ||
| } | ||
| // until bytes available | ||
| while (bytes < 0); | ||
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| // searches for the first occurrence of '\n' | ||
| endc = strchr(input, '\n'); | ||
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| // if found new line set value at pointer to 0 | ||
| if (endc) | ||
| *endc = 0; | ||
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| // if input is available | ||
| if (strlen(input) > 0) | ||
| { | ||
| // match UCI "quit" command | ||
| if (!strncmp(input, "quit", 4)) | ||
| { | ||
| // tell engine to terminate exacution | ||
| quit = true; | ||
| } | ||
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| // // match UCI "stop" command | ||
| else if (!strncmp(input, "stop", 4)) | ||
| { | ||
| // tell engine to terminate exacution | ||
| quit = true; | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| }; |
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