use json serialization everywhere (staged for adding socket functionality)

.gitignore

@@ -1 +1,2 @@
 bin/*
+*.swp

Makefile

@@ -1,2 +1,6 @@
 azool:
-	g++ src/*.cc -I./include -o bin/azool -Werror -Weffc++ -std=c++11
+	mkdir -p bin
+	g++ src/*.cc -I./include -o bin/azool -Werror -Weffc++ -std=c++11 -DBOOST_ALLOW_DEPRECATED_HEADERS -DBOOST_BIND_GLOBAL_PLACEHOLDERS
+
+clean:
+	rm bin/*

include/GameBoard.h

@@ -4,6 +4,7 @@
 #include <ostream>
 #include <cstring>
 #include <random>
+#include <boost/property_tree/ptree.hpp>
 #include "tile_utils.h"
 
 class GameBoard {
@@ -17,15 +18,17 @@ public:
 
   GameBoard(int nPlayers=2);
   friend std::ostream& operator<<(std::ostream& out, const GameBoard& board);
-  bool validFactoryRequest(int factoryIdx, azool::TileColor color);
+  bool validFactoryRequest(int factoryIdx, azool::TileColor color) const;
   bool takeTilesFromFactory(int factoryIdx, azool::TileColor color, int& numTiles);
   bool takeTilesFromPool(azool::TileColor color, int& numTiles, bool& poolPenalty);
   void returnTilesToBag(int numTiles, azool::TileColor color);
   void dealTiles();
+  std::string handleRequest(const std::string&);
+  boost::property_tree::ptree serializeBoard() const;
   int numFactories() {
     return tileFactories.size();
   }
-  bool endOfRound() {
+  bool endOfRound() const {
     // round ends when the pool and tile factories are empty
     for (int ii = 0; ii < azool::NUMCOLORS; ++ii) {
       if (pool[ii] > 0) return false;
@@ -39,6 +42,7 @@ private:
   // - vector of factories?
   std::vector<Factory> tileFactories;
   int maxNumFactories;
+  int myNumPlayers;
   int pool[azool::NUMCOLORS];  // stores the count of each color currently in the pool; initialize to 0s
   bool whiteTileInPool;  // initialize to true
   std::vector<azool::TileColor> tileBag;  // initialize to 20 of each color

include/Player.h

@@ -15,6 +15,7 @@ public:
   void placeTiles(int rowIdx, azool::TileColor color, int numTiles);
   void endRound(bool& fullRow);
   void finalizeScore();
+  std::string sendRequest(const std::string&);
   int getScore() const {
     return myScore;
   }
@@ -22,9 +23,11 @@ public:
   bool tookPenalty() const {
     return myTookPoolPenaltyThisRound;
   }
+  int getScorePenalty() const;
   const std::string getPlayerName() const {
     return myName;
   }
+  void sendRequest(/*string or stringstream?*/);
 
 private:
   Player(const Player&) = delete;

include/tile_utils.h

@@ -19,5 +19,11 @@ const std::string TileColorStrings[NUMCOLORS] =  {
 };
 
 const char TileColorSyms[NUMCOLORS] = { 'r', 'b', 'g', 'y', 'k' };
+const int MAXPLAYERS = 4;
+
+const std::string REQ_TYPE_DRAW_FROM_FACTORY    = "DRAW_FROM_FACTORY";
+const std::string REQ_TYPE_DRAW_FROM_POOL       = "DRAW_FROM_POOL";
+const std::string REQ_TYPE_RETURN_TO_BAG        = "RETURN_TO_BAG";
+const std::string REQ_TYPE_GET_BOARD            = "GET_BOARD";
 }
 #endif  // TILE_UTILS_H_

src/GameBoard.cc

@@ -1,9 +1,14 @@
 #include "GameBoard.h"
 #include <algorithm>
 #include <chrono>
+#include <boost/property_tree/json_parser.hpp>
+#include <iostream>
+
+namespace pt = boost::property_tree;
 
 GameBoard::GameBoard(int numPlayers) :
   tileFactories(),
+  myNumPlayers(numPlayers),
   maxNumFactories(numPlayers*2+1),
   pool(),
   whiteTileInPool(true),
@@ -37,9 +42,10 @@ std::ostream& operator<<(std::ostream& out, const GameBoard& board) {
   return out;
 }
 
-bool GameBoard::validFactoryRequest(int factoryIdx, azool::TileColor color) {
+bool GameBoard::validFactoryRequest(int factoryIdx, azool::TileColor color) const {
   // check if color exists on specified factory
   bool retVal = factoryIdx < tileFactories.size() and
+                factoryIdx > -1 and
                 tileFactories[factoryIdx].tileCounts[color] > 0;
   return retVal;
 }
@@ -72,12 +78,12 @@ bool GameBoard::takeTilesFromPool(azool::TileColor color, int& numTiles, bool& p
   poolPenalty = whiteTileInPool;
   whiteTileInPool = false;
   return true;
-}
+}  // GameBoard::takeTilesFromPool
 void GameBoard::returnTilesToBag(int numTiles, azool::TileColor color) {
   for (int ii = 0; ii < numTiles; ++ii) {
     tileBag.emplace_back(color);
   }
-}
+}  // GameBoard::returnTilesToBag
 
 // random shuffle then read from the beginning of the vector?
 void GameBoard::dealTiles() {
@@ -102,6 +108,94 @@ void GameBoard::dealTiles() {
   }
 }  // GameBoard::dealTiles
 
+pt::ptree GameBoard::serializeBoard() const {
+  pt::ptree outTree;
+  // factories
+  pt::ptree factTree;
+  int factCt = 1;
+  for (auto factory : tileFactories) {
+    std::stringstream factSS;
+    for (int ii = 0; ii < azool::NUMCOLORS; ++ii) {
+      for (int jj = 0; jj < factory.tileCounts[ii]; ++jj) {
+        factSS << azool::TileColorStrings[ii] << ",";
+      }
+    }
+    factTree.put(std::to_string(factCt), factSS.str());
+    factCt++;
+  }
+  outTree.add_child("factories", factTree);
+  outTree.put("num_factories", tileFactories.size());
+  // pool
+  pt::ptree poolTree;
+  for (int ii = 0; ii < azool::NUMCOLORS; ++ii) {
+    poolTree.put(azool::TileColorStrings[ii], pool[ii]);
+  }
+  if (whiteTileInPool) {
+    poolTree.put("penalty", -1);
+  }
+  else {
+    poolTree.put("penalty", 0);
+  }
+  outTree.add_child("pool", poolTree);
+  outTree.put("end_of_round", endOfRound());
+  return outTree;
+}  // GameBoard::serializeBoard
+
+std::string GameBoard::handleRequest(const std::string& instring) {
+  std::stringstream iss(instring);
+  pt::ptree inTree;
+  pt::read_json(iss, inTree);
+  pt::ptree outTree;
+  std::string req_type = inTree.get<std::string>("req_type");
+  // check type of request; check that required parameters are present; etc
+  // return: json with results, status, error msg if any
+  if (req_type.compare(azool::REQ_TYPE_DRAW_FROM_FACTORY) == 0) {
+    int idx = inTree.get<int>("factory_idx", -1);
+    int numTiles = 0;
+    azool::TileColor color = static_cast<azool::TileColor>(inTree.get<int>("tile_color"));
+    bool success = takeTilesFromFactory(idx, color, numTiles);
+    outTree.put("status", success ? "success" : "fail");
+    outTree.put("success", success);
+    outTree.put("num_tiles_returned", numTiles);
+    if (!success) {
+      outTree.put("error_msg", "INVALID FACTORY REQUEST");
+    }
+  }
+  else if (req_type.compare(azool::REQ_TYPE_DRAW_FROM_POOL) == 0) {
+    azool::TileColor color = static_cast<azool::TileColor>(inTree.get<int>("tile_color"));
+    int numTiles = 0;
+    bool penalty = false;
+    bool success = takeTilesFromPool(color, numTiles, penalty);
+    outTree.put("success", success);
+    outTree.put("status", success ? "success" : "fail");
+    outTree.put("num_tiles_returned", numTiles);
+    outTree.put("pool_penalty", penalty);
+    if (!success) {
+      outTree.put("error_msg", "INVALID POOL REQUEST");
+    }
+  }
+  else if (req_type.compare(azool::REQ_TYPE_RETURN_TO_BAG) == 0) {
+    int numTiles = inTree.get<int>("num_tiles_returned", 0);
+    azool::TileColor color = static_cast<azool::TileColor>(inTree.get<int>("tile_color"));
+    returnTilesToBag(numTiles, color);
+    outTree.put("success", true);  // no reason for this to fail
+    outTree.put("status", "success");
+  }
+  else if (req_type.compare(azool::REQ_TYPE_GET_BOARD) == 0) {
+    outTree = serializeBoard();
+  }
+  else {
+    // ERROR, BAD THINGS
+    outTree.put("error_msg", "INVALID REQUEST TYPE");
+  }
+  outTree.put("req_type", req_type);  // include request type in returned data
+  std::stringstream oss;
+  pt::write_json(oss, outTree);
+  std::string output = oss.str();
+  return output;
+  // send output string over socket
+}  // GameBoard::handleRequest
+
 void GameBoard::resetBoard() {
   memset(pool, 0, azool::NUMCOLORS*sizeof(int));
   tileBag.clear();

src/Player.cc

@@ -2,6 +2,8 @@
 #include <iostream>
 #include <cstring>
 #include <sstream>
+#include <boost/property_tree/json_parser.hpp>
+namespace pt = boost::property_tree;
 
 Player::Player(GameBoard* const board, std::string name) :
   myGrid(),
@@ -41,10 +43,24 @@ bool Player::checkValidMove(azool::TileColor color, int rowIdx) const {
 }  // Player::checkValidMove
 
 bool Player::takeTilesFromFactory(int factoryIdx, azool::TileColor color, int rowIdx) {
-  // call game board -> takeTiles(factoryIdx, color)
-  int numTiles = 0;
-  if (checkValidMove(color, rowIdx) and
-      myBoardPtr->takeTilesFromFactory(factoryIdx, color, numTiles)) {
+  // checkValidMove first - can't undo request to boardptr
+  if (!checkValidMove(color, rowIdx)) {
+    return false;
+  }
+  pt::ptree request;
+  request.put("req_type", azool::REQ_TYPE_DRAW_FROM_FACTORY);
+  request.put("tile_color", color);
+  request.put("factory_idx", factoryIdx);
+  std::stringstream oss;
+  pt::write_json(oss, request);
+  // send request to board, recieve response
+  std::stringstream iss(sendRequest(oss.str()));
+  pt::ptree response;
+  pt::read_json(iss, response);
+  // std::cout << iss.str() << std::endl;
+  bool success = response.get<bool>("success", false);
+  int numTiles = response.get<int>("num_tiles_returned", 0);
+  if (success) {
     placeTiles(rowIdx, color, numTiles);
     return true;
   }
@@ -53,12 +69,22 @@ bool Player::takeTilesFromFactory(int factoryIdx, azool::TileColor color, int ro
 
 bool Player::takeTilesFromPool(azool::TileColor color, int rowIdx) {
   // call game board -> takeTilesFromPool
-  int numTiles = 0;
-  bool poolPenalty = false;
   if (!checkValidMove(color, rowIdx)) {
     return false;
   }
-  if (!myBoardPtr->takeTilesFromPool(color, numTiles, poolPenalty)) {
+  pt::ptree request;
+  request.put("req_type", azool::REQ_TYPE_DRAW_FROM_POOL);
+  request.put("tile_color", color);
+  std::stringstream oss;
+  pt::write_json(oss, request);
+  // send request to board, recieve response
+  std::stringstream iss(sendRequest(oss.str()));
+  pt::ptree response;
+  pt::read_json(iss, response);
+  bool success = response.get<bool>("success", false);
+  int numTiles = response.get<int>("num_tiles_returned", 0);
+  bool poolPenalty = response.get<bool>("pool_penalty", false);
+  if (!success) {
     return false;  // couldn't get that tile from the pool
   }
   if (poolPenalty) {
@@ -98,18 +124,22 @@ void Player::endRound(bool& fullRow) {
       myGrid[rowIdx][col] = true;
       myScore += scoreTile(rowIdx, col);
       // return extra tiles -- rowIdx = the number of leftover tiles
-      myBoardPtr->returnTilesToBag(rowIdx, myRows[rowIdx].second);
+      pt::ptree request;
+      request.put("req_type", azool::REQ_TYPE_RETURN_TO_BAG);
+      request.put("num_tiles_returned", rowIdx);
+      request.put("tile_color", myRows[rowIdx].second);
+      std::stringstream oss;
+      pt::write_json(oss, request);
+      // send request to gameboard...don't care abt response here (?)
+      sendRequest(oss.str());
+      // myBoardPtr->returnTilesToBag(rowIdx, myRows[rowIdx].second);
       // reset rows for next turn
       myRows[rowIdx].first = 0;
       myRows[rowIdx].second = azool::NONE;
     }
   }
-  if (myNumPenaltiesForRound >= PenaltyPoints.size()) {
-    myScore -= PenaltyPoints[PenaltyPoints.size() - 1];
-  }
-  else {
-    myScore -= PenaltyPoints[myNumPenaltiesForRound];
-  }
+  myScore -= getScorePenalty();
+  myScore = std::max(myScore, 0);  // let's not allow negatives
   // reset for next turn
   // FOR THIS REASON
   // main loop needs to check who took penalty BEFORE calling this function
@@ -134,6 +164,12 @@ void Player::endRound(bool& fullRow) {
   }  // iter over rows in grid
 }  // Player::endRound
 
+int Player::getScorePenalty() const {
+  if (myNumPenaltiesForRound >= PenaltyPoints.size()) {
+    return PenaltyPoints[PenaltyPoints.size() - 1];
+  }
+  return PenaltyPoints[myNumPenaltiesForRound];
+}
 int Player::scoreTile(int tileRow, int tileCol) {
   // search horizontally and vertically for points
   int tileScore = 1;
@@ -235,6 +271,8 @@ void Player::finalizeScore() {
 }  // Player::finalizeScore
 
 std::string Player::printMyBoard() const {
+  // pt::ptree request;
+  // request.put("req_type", azool::REQ_TYPE_GET_BOARD);
   std::ostringstream oss;
   oss << "*******************************\n";
   oss << "PLAYER: " << myName << "\n";
@@ -269,13 +307,25 @@ std::string Player::printMyBoard() const {
   }  // iterate over rows
   oss << "Penalties: " << myNumPenaltiesForRound << "\n";
   oss << "Score: " << myScore << "\n";
+  oss << "-------------------------------\n";
   return oss.str();
   // TODO(feature) - print penalty tiles (?)
 }  // Player::printMyBoard
 
 bool Player::discardFromFactory(int factoryIdx, azool::TileColor color) {
-  int numTiles = -1;
-  if (myBoardPtr->takeTilesFromFactory(factoryIdx, color, numTiles)) {
+  pt::ptree request;
+  request.put("req_type", azool::REQ_TYPE_DRAW_FROM_FACTORY);
+  request.put("factory_idx", factoryIdx);
+  request.put("tile_color", color);
+  std::stringstream oss;
+  pt::write_json(oss, request);
+  // send request to board, recieve response
+  std::stringstream iss(sendRequest(oss.str()));
+  pt::ptree response;
+  pt::read_json(iss, response);
+  bool success = response.get<bool>("success", false);
+  int numTiles = response.get<int>("num_tiles_returned", 0);
+  if (success) {
     myNumPenaltiesForRound += numTiles;
     return true;
   }
@@ -283,9 +333,19 @@ bool Player::discardFromFactory(int factoryIdx, azool::TileColor color) {
 }  // Player::discardFromFactory
 
 bool Player::discardFromPool(azool::TileColor color) {
-  bool poolPenalty = false;
-  int numTiles = -1;
-  if (myBoardPtr->takeTilesFromPool(color, numTiles, poolPenalty)) {
+  pt::ptree request;
+  request.put("req_type", azool::REQ_TYPE_DRAW_FROM_POOL);
+  request.put("tile_color", color);
+  std::stringstream oss;
+  pt::write_json(oss, request);
+  // send request to board, recieve response
+  std::stringstream iss(sendRequest(oss.str()));
+  pt::ptree response;
+  pt::read_json(iss, response);
+  bool success = response.get<bool>("success", false);
+  int numTiles = response.get<int>("num_tiles_returned", 0);
+  bool poolPenalty = response.get<bool>("pool_penalty", false);
+  if (success) {
     if (poolPenalty) {
       myNumPenaltiesForRound++;
     }
@@ -295,14 +355,20 @@ bool Player::discardFromPool(azool::TileColor color) {
   return false;
 }  // Player::discardFromPool
 
+std::string Player::sendRequest(const std::string& inStr) {
+  // do the socket stuff here
+  std::string rxStr = myBoardPtr->handleRequest(inStr);
+  return rxStr;
+}  // Player::sendRequest
+
 namespace {
-int promptForFactoryIdx(int maxNumFactories) {
+int promptForFactoryIdx(int maxFactIdx) {
   static const char* promptFactoryIdxDraw = "Which factory? enter index\n";
   char factInput;  // TODO can we safely say there will never be more than 9 possible?
   std::cout << promptFactoryIdxDraw << std::flush;
   std::cin >> factInput;
   int factIdx = std::atoi(&factInput);
-  if (factIdx < 1 or factIdx > maxNumFactories) {
+  if (factIdx < 1 or factIdx > maxFactIdx) {
     return -1;
   }
   return factIdx;
@@ -348,7 +414,19 @@ int promptForRow() {
 
 void Player::takeTurn() {
   // print game board, handle user input
-  if (myBoardPtr->endOfRound()) return;
+  pt::ptree request;
+  request.put("req_type", azool::REQ_TYPE_GET_BOARD);
+  std::stringstream reqss;
+  pt::write_json(reqss, request);
+  // send request to board, recieve response
+  std::stringstream iss(sendRequest(reqss.str()));
+  pt::ptree response;
+  pt::read_json(iss, response);
+  bool endOfRound = response.get<bool>("end_of_round");
+  // max idx for input - users use 1-indexing
+  int maxFactIdx = response.get<int>("num_factories");
+  if (endOfRound) return;
+  std::cout << *myBoardPtr << "\n\n";
   std::cout << printMyBoard();
   static const char* promptDrawInput = "What would you like to do?\n"
                                        "[f] take from factory "
@@ -366,7 +444,7 @@ void Player::takeTurn() {
     char drawType;
     std::cin >> drawType;
     if (drawType == 'f') {
-      int factIdx = promptForFactoryIdx(myBoardPtr->numFactories());
+      int factIdx = promptForFactoryIdx(maxFactIdx);
       // draw from factory
       if (factIdx == -1) {
         std::cout << invalidEntryMessage << std::flush;
@@ -413,7 +491,7 @@ void Player::takeTurn() {
       char discardFrom = '\0';
       std::cin >> discardFrom;
       if (discardFrom == 'f') {
-        int factIdx = promptForFactoryIdx(myBoardPtr->numFactories());
+        int factIdx = promptForFactoryIdx(maxFactIdx);
         // draw from factory
         if (factIdx == -1) {
           std::cout << invalidEntryMessage << std::flush;

src/main.cc

@@ -26,7 +26,7 @@ void playGame(GameBoard* game) {
       secondPlayer->takeTurn();
     }
     // check who took penalty
-    // nees to be done before claling player->endRound()
+    // needs to be done before calling player->endRound()
     if (players[0]->tookPenalty()) {
       firstPlayer = players[0];
       secondPlayer = players[1];