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minmax.java
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import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
// black open the game, black always on the top
// 8*8 12棋子
// normal piece can only move forward (upper left/ upper right)
// king piece can move forward and backward (upper left/ upper right/ down left/ down right)
//////
public class minmax {
public static void main(String[] args) throws IOException {
File outFile = new File("output.txt");
FileWriter fileWriter = new FileWriter(outFile);
File file = new File("/Users/laicunhao/eclipse-workspace/CS561HW2/src/input.txt");
// File cali = new File("calibrate.txt");
// Scanner caliScanner = new Scanner(cali);
int playturn = 1;
File f = new File("playdata.txt");
if (f.exists()) {
// System.out.println("Exists");
Scanner playScanner = new Scanner(f);
playturn = Integer.parseInt(playScanner.next());
playturn++;
FileWriter playerFile = new FileWriter(f);
playerFile.write(playturn+"");
playerFile.close();
}
else {
// System.out.println("Does not Exists");
FileWriter playerFile = new FileWriter(f);
playerFile.write(playturn+"");
playerFile.close();
}
Scanner scanner = new Scanner(file);
// SINGLE OR GAME
String mode = scanner.next();
// BLACK or WHITE
String myColor = scanner.next();
float remainTime = Float.parseFloat(scanner.next());
// Build up the board information
Board board = new Board();
buildMap(board, scanner);
// Get all our side piece
// List<Node> ls;
String opponentColor = "";
// boolean myTurn;
if(myColor.equals("BLACK")) {
opponentColor = "WHITE";
}
else {
opponentColor = "BLACK";
}
/*
if(mode.equals("SINGLE")) {
Board resultBoard = minimax(11, true, Double.NEGATIVE_INFINITY, Double.MAX_VALUE, myColor, opponentColor, board);
System.out.println(resultBoard.eval);
resultBoard.print();
List<String> path = resultBoard.map.get(resultBoard.endNode).paths;
String movingType = moveType(path);
writeOutFile(fileWriter, path, movingType);
}
else {
if(playturn <= 5) {
Board resultBoard = minimax(5, true, Integer.MIN_VALUE, Integer.MAX_VALUE, myColor, opponentColor, board);
List<String> path = resultBoard.map.get(resultBoard.endNode).paths;
String movingType = moveType(path);
writeOutFile(fileWriter, path, movingType);
}
else {
if(remainTime < 0.01) {
// System.out.println("0.01");
Board resultBoard = minimax(1, true, Integer.MIN_VALUE, Integer.MAX_VALUE, myColor, opponentColor, board);
List<String> path = resultBoard.map.get(resultBoard.endNode).paths;
String movingType = moveType(path);
writeOutFile(fileWriter, path, movingType);
}
else if(remainTime < 2) {
// System.out.println("2");
Board resultBoard = minimax(3, true, Integer.MIN_VALUE, Integer.MAX_VALUE, myColor, opponentColor, board);
List<String> path = resultBoard.map.get(resultBoard.endNode).paths;
String movingType = moveType(path);
writeOutFile(fileWriter, path, movingType);
}
else if(remainTime < 5) {
// System.out.println("5");
Board resultBoard = minimax(5, true, Integer.MIN_VALUE, Integer.MAX_VALUE, myColor, opponentColor, board);
List<String> path = resultBoard.map.get(resultBoard.endNode).paths;
String movingType = moveType(path);
writeOutFile(fileWriter, path, movingType);
}
else if(remainTime < 20) {
// System.out.println("20");
Board resultBoard = minimax(7, true, Integer.MIN_VALUE, Integer.MAX_VALUE, myColor, opponentColor, board);
List<String> path = resultBoard.map.get(resultBoard.endNode).paths;
String movingType = moveType(path);
writeOutFile(fileWriter, path, movingType);
}
else if(remainTime < 100){
// System.out.println("100");
Board resultBoard = minimax(9, true, Integer.MIN_VALUE, Integer.MAX_VALUE, myColor, opponentColor, board);
List<String> path = resultBoard.map.get(resultBoard.endNode).paths;
String movingType = moveType(path);
writeOutFile(fileWriter, path, movingType);
}
else {
// System.out.println(">100");
Board resultBoard = minimax(11, true, Integer.MIN_VALUE, Integer.MAX_VALUE, myColor, opponentColor, board);
List<String> path = resultBoard.map.get(resultBoard.endNode).paths;
String movingType = moveType(path);
writeOutFile(fileWriter, path, movingType);
}
}
}
*/
// for(int i = 13; i >= 1; i = i - 2) {
// float time = Float.parseFloat(caliScanner.next());
// if(time <= 15 && time < remainTime) {
// depth = i;
// break;
// }
// }
// /// NEED DELETE ////
Board testwhite = board;
Board testblack = board;
int turn = 1;
///////TEST/////
while(testwhite.endGame() == false || testblack.endGame() == false ) {
System.out.println("turn: " + turn);
//黑先
testwhite = minimax2(11, true, Double.NEGATIVE_INFINITY, Double.MAX_VALUE, "BLACK", "WHITE",testblack);
System.out.println(testwhite.eval);
testwhite.print();
testwhite.eval = 0;
System.out.println();
testblack = minimax(7, true, Double.NEGATIVE_INFINITY, Double.MAX_VALUE, "WHITE", "BLACK",testwhite);
System.out.println(testblack.eval);
testblack.print();
testblack.eval = 0;
System.out.println();
turn++;
}
// ///////TEST/////
// /// NEED DELETE ////
}
private static void writeOutFile(FileWriter fileWriter, List<String> path, String movingType) throws IOException {
Map<String, String> dictMap = new HashMap<>();
dictMap.put("0", "a");
dictMap.put("1", "b");
dictMap.put("2", "c");
dictMap.put("3", "d");
dictMap.put("4", "e");
dictMap.put("5", "f");
dictMap.put("6", "g");
dictMap.put("7", "h");
// move
if(movingType.equals("E")) {
outputMove(fileWriter, movingType, path, dictMap);
}
else {
outputJump(fileWriter, movingType, path, dictMap);
}
fileWriter.close();
}
private static void outputJump(FileWriter fileWriter, String movingType, List<String> path, Map<String, String> dictMap) throws IOException {
List<String[]> intData = processData(path);
for(int i = 1; i < intData.size(); i++) {
fileWriter.write(movingType);
fileWriter.write(" ");
String first1 = intData.get(i - 1)[0];
String second1 = intData.get(i - 1)[1];
fileWriter.write(transform(first1, second1, dictMap));
fileWriter.write(" ");
String first2 = intData.get(i)[0];
String second2 = intData.get(i)[1];
fileWriter.write(transform(first2, second2, dictMap));
if(i == intData.size() - 1) {
break;
}
fileWriter.write("\n");
}
}
private static void outputMove(FileWriter fileWriter, String movingType, List<String> path, Map<String, String> dictMap) throws IOException {
fileWriter.write(movingType);
fileWriter.write(" ");
List<String[]> intData = processData(path);
for(int i = 0; i < intData.size(); i++) {
String first = intData.get(i)[0];
String second = intData.get(i)[1];
fileWriter.write(transform(first, second, dictMap));
if(i == intData.size() - 1) {
break;
}
fileWriter.write(" ");
}
}
private static String transform(String row, String col, Map<String, String> dictMap) {
String ans = "";
ans = dictMap.get(col);
int tmp = (Integer.parseInt(row) - 8) * -1;
ans = ans + tmp;
return ans;
}
private static List<String[]> processData(List<String> path) {
List<String[]> ls = new ArrayList<>();
for(int i = 0; i < path.size(); i++) {
String[] s1 = path.get(i).split(",");
ls.add(s1);
}
return ls;
}
private static String moveType(List<String> path) {
String[] s1 = path.get(0).split(",");
String[] s2 = path.get(1).split(",");
int diff = Math.abs( Integer.parseInt(s1[0]) - Integer.parseInt(s2[0]) );
// Move Type
if(diff == 1) {
return "E";
}
// Jump Type
else {
return "J";
}
}
private static Board minimax(int depth, boolean myTurn, double alpha, double beta, String myColor, String opponentColor, Board board) {
if(depth == 0) {
board.eval2(myColor);
return board;
}
if(myTurn) {
double maxEval = Double.NEGATIVE_INFINITY;
Board bestMove= board;
List<Node> ls = determineColor(board, myTurn, myColor, opponentColor);
List<Board> allMoves = getAllMoves(board, ls);
// null check => check if "board" is the end of the Game
if(allMoves.isEmpty()) {
bestMove.eval2(myColor);
return bestMove;
}
for(Board curBoard: allMoves) {
Board tmp = minimax(depth - 1, false, alpha, beta, myColor, opponentColor, curBoard);
maxEval = Math.max(maxEval, tmp.eval);
//////ab//////
alpha = Math.max(alpha, maxEval);
if(maxEval == tmp.eval) {
curBoard.eval = tmp.eval;
bestMove = curBoard;
}
if(beta <= alpha) {
break;
}
//////////////
// a b //
// if(maxEval >= beta) {
// // NOT SURE return tmp or curBoard
// curBoard.eval = tmp.eval;
// return curBoard;
// }
// alpha = Math.max(alpha, maxEval);
//
// if(maxEval == tmp.eval) {
// curBoard.eval = tmp.eval;
// bestMove = curBoard;
// }
////////////
}
return bestMove;
}
else {
double minEval = Double.MAX_VALUE;
Board bestMove= board;
List<Node> ls = determineColor(board, myTurn, myColor, opponentColor);
List<Board> allMoves = getAllMoves(board, ls);
// null check => check if "board" is the end of the Game
if(allMoves.isEmpty()) {
bestMove.eval2(myColor);
return bestMove;
}
for(Board curBoard: allMoves) {
Board tmp = minimax(depth - 1, true, alpha, beta, myColor, opponentColor, curBoard);
minEval = Math.min(minEval, tmp.eval);
//////////
beta = Math.min(beta, minEval);
if(minEval == tmp.eval) {
curBoard.eval = tmp.eval;
bestMove = curBoard;
}
if(alpha <= beta) {
break;
}
//////////
// a b //
// if(minEval <= alpha) {
// // NOT SURE return tmp or curBoard
// curBoard.eval = tmp.eval;
// return curBoard;
// }
// beta = Math.min(beta, minEval);
//
//
// if(minEval == tmp.eval) {
// curBoard.eval = tmp.eval;
// bestMove = curBoard;
// }
////////
}
return bestMove;
}
}
// TESTING ///
private static Board minimax2(int depth, boolean myTurn, double alpha, double beta, String myColor, String opponentColor, Board board) {
if(depth == 0) {
board.eval(myColor);
return board;
}
if(myTurn) {
double maxEval = Double.NEGATIVE_INFINITY;
Board bestMove= board;
List<Node> ls = determineColor(board, myTurn, myColor, opponentColor);
List<Board> allMoves = getAllMoves(board, ls);
// null check => check if "board" is the end of the Game
if(allMoves.isEmpty()) {
bestMove.eval(myColor);
return bestMove;
}
for(Board curBoard: allMoves) {
Board tmp = minimax2(depth - 1, false, alpha, beta, myColor, opponentColor, curBoard);
maxEval = Math.max(maxEval, tmp.eval);
//////ab//////
alpha = Math.max(alpha, maxEval);
if(maxEval == tmp.eval) {
curBoard.eval = tmp.eval;
bestMove = curBoard;
}
if(beta <= alpha) {
break;
}
//////////////
}
return bestMove;
}
else {
double minEval = Double.MAX_VALUE;
Board bestMove= board;
List<Node> ls = determineColor(board, myTurn, myColor, opponentColor);
List<Board> allMoves = getAllMoves(board, ls);
// null check => check if "board" is the end of the Game
if(allMoves.isEmpty()) {
bestMove.eval(myColor);
return bestMove;
}
for(Board curBoard: allMoves) {
Board tmp = minimax2(depth - 1, true, alpha, beta, myColor, opponentColor, curBoard);
minEval = Math.min(minEval, tmp.eval);
beta = Math.min(beta, minEval);
if(minEval == tmp.eval) {
curBoard.eval = tmp.eval;
bestMove = curBoard;
}
if(alpha <= beta) {
break;
}
}
return bestMove;
}
}
// ////////TESTING//////////
// private static Board minimax(int depth, boolean myTurn, int alpha, int beta, String myColor, String opponentColor, Board board) {
// if(depth == 0) {
// board.eval(myColor);
//// System.out.println("org:"+board.eval);
//// board.print();
//// System.out.println();
// return board;
// }
//
// if(myTurn) {
// int maxEval = Integer.MIN_VALUE;
// // 這裡需要改 bestMove == board 嗎？？？？ 要 必續傳
// Board bestMove= board;
//
// List<Node> ls = determineColor(board, myTurn, myColor, opponentColor);
//
// List<Board> allMoves = getAllMoves(board, ls);
// // null check => check if "board" is the end of the Game
// if(allMoves.isEmpty()) {
// bestMove.eval(myColor);
//
//// System.out.println("AAorg:"+bestMove.eval);
//// bestMove.print();
//// System.out.println();
//
// return bestMove;
// }
//
// for(Board curBoard: allMoves) {
// Board tmp = minimax(depth - 1, false, alpha, beta, myColor, opponentColor, curBoard);
//
// maxEval = Math.max(maxEval, tmp.eval);
// /////////
// // a b //
// if(maxEval >= beta) {
// // NOT SURE return tmp or curBoard
// curBoard.eval = tmp.eval;
// return curBoard;
// }
// alpha = Math.max(alpha, maxEval);
//
// ////////
//
// if(maxEval == tmp.eval) {
// curBoard.eval = tmp.eval;
// bestMove = curBoard;
// }
//
// }
// return bestMove;
// }
// else {
// int minEval = Integer.MAX_VALUE;
// Board bestMove= board;
// List<Node> ls = determineColor(board, myTurn, myColor, opponentColor);
//
// List<Board> allMoves = getAllMoves(board, ls);
// // null check => check if "board" is the end of the Game
// if(allMoves.isEmpty()) {
// bestMove.eval(myColor);
//
//// System.out.println("AAorg:"+bestMove.eval);
//// bestMove.print();
//// System.out.println();
//
//
// return bestMove;
// }
//
// for(Board curBoard: allMoves) {
// Board tmp = minimax(depth - 1, true, alpha, beta, myColor, opponentColor, curBoard);
//
//
// minEval = Math.min(minEval, tmp.eval);
// // a b //
// if(minEval <= alpha) {
// // NOT SURE return tmp or curBoard
// curBoard.eval = tmp.eval;
// return curBoard;
// }
// else {
// beta = Math.min(beta, minEval);
// }
// ///////
//
//
// if(minEval == tmp.eval) {
// curBoard.eval = tmp.eval;
// bestMove = curBoard;
// }
// }
// return bestMove;
// }
// }
private static List<Node> determineColor(Board board, boolean myTurn, String myColor, String opponentColor) {
List<Node> ls;
if(myTurn) {
if(myColor.equals("WHITE")) {
ls = board.whiteLs;
}
else {
ls = board.blackLs;
}
}
else {
if(opponentColor.equals("WHITE")) {
ls = board.whiteLs;
}
else {
ls = board.blackLs;
}
}
return ls;
}
private static List<Board> getAllMoves(Board board, List<Node> ls) {
List<Board> jumpMoveBoards = new ArrayList<>();
List<Board> goMoveBoards = new ArrayList<>();
// go through every Node in our side node
for (Node curNode: ls) {
List<Board> nextMoveBoards = new ArrayList<>();
// get this node all valid moves
nextMoveBoards.addAll(validMoves(board, curNode));
// not empty
if(nextMoveBoards.isEmpty() == false) {
if(nextMoveBoards.get(0).mode.equals("jump") ) {
jumpMoveBoards.addAll(nextMoveBoards);
}
else {
goMoveBoards.addAll(nextMoveBoards);
}
}
}
if(jumpMoveBoards.isEmpty() == false) {
return jumpMoveBoards;
}
return goMoveBoards;
}
/**
* valid moves of one node
* */
private static List<Board> validMoves(Board curboard, Node curNode) {
List<Board> validPosBoards = new ArrayList<>();
String color = curNode.color;
String curPos = curNode.row + "," + curNode.col;
boolean isKing = curNode.isKing;
if(color.equals("BLACK") && isKing == false) {
List<String> jumpOverLeft = new ArrayList<>();
List<String> pathLeft = new ArrayList<>();
List<String> jumpOverRight = new ArrayList<>();
List<String> pathRight = new ArrayList<>();
pathLeft.add(curPos);
pathRight.add(curPos);
List<Board> tmpLeftJump = goJump(color,1, -1, isKing, curNode.row, curNode.col, curboard, jumpOverLeft, pathLeft);
if(tmpLeftJump.isEmpty() == false) {
pathLeft.remove(pathLeft.size() - 1);
jumpOverLeft.remove(jumpOverLeft.size() - 1);
}
List<Board> tmpRightJump = goJump(color,1, 1,isKing, curNode.row, curNode.col, curboard, jumpOverRight, pathRight);
if(tmpRightJump.isEmpty() == false) {
pathRight.remove(pathRight.size() - 1);
jumpOverRight.remove(jumpOverRight.size() - 1);
}
////
if(tmpLeftJump.isEmpty()&& tmpRightJump.isEmpty()) {
List<Board> tmpLeft = go(color, 1, -1, isKing, curNode.row, curNode.col, curboard, jumpOverLeft, pathLeft);
List<Board> tmpRight = go(color, 1, 1, isKing, curNode.row, curNode.col, curboard, jumpOverRight, pathRight);
validPosBoards.addAll(tmpLeft);
validPosBoards.addAll(tmpRight);
}
else {
validPosBoards.addAll(tmpLeftJump);
validPosBoards.addAll(tmpRightJump);
}
}
else if(color.equals("WHITE") && isKing == false) {
List<String> jumpOverLeft = new ArrayList<>();
List<String> pathLeft = new ArrayList<>();
List<String> jumpOverRight = new ArrayList<>();
List<String> pathRight = new ArrayList<>();
pathLeft.add(curPos);
pathRight.add(curPos);
List<Board> tmpLeftJump = goJump(color, -1, -1, isKing, curNode.row, curNode.col, curboard, jumpOverLeft, pathLeft);
if(tmpLeftJump.isEmpty() == false) {
pathLeft.remove(pathLeft.size() - 1);
jumpOverLeft.remove(jumpOverLeft.size() - 1);
}
List<Board> tmpRightJump = goJump(color, -1, 1,isKing, curNode.row, curNode.col, curboard, jumpOverRight, pathRight);
if(tmpRightJump.isEmpty() == false) {
pathRight.remove(pathRight.size() - 1);
jumpOverRight.remove(jumpOverRight.size() - 1);
}
if(tmpLeftJump.isEmpty() && tmpRightJump.isEmpty()) {
List<Board> tmpLeft = go(color, -1, -1, isKing, curNode.row, curNode.col, curboard, jumpOverLeft, pathLeft);
List<Board> tmpRight = go(color, -1, 1, isKing, curNode.row, curNode.col, curboard, jumpOverRight, pathRight);
validPosBoards.addAll(tmpLeft);
validPosBoards.addAll(tmpRight);
}
else {
validPosBoards.addAll(tmpLeftJump);
validPosBoards.addAll(tmpRightJump);
}
}
else if(isKing) {
List<String> pathUpLeft = new ArrayList<>();
List<String> pathDownLeft = new ArrayList<>();
List<String> pathUpRight = new ArrayList<>();
List<String> pathDownRight = new ArrayList<>();
pathUpLeft.add(curPos);
pathDownLeft.add(curPos);
pathUpRight.add(curPos);
pathDownRight.add(curPos);
List<Board> tmpUpLeftJump = goJumpKing(color, -1, -1, isKing, curNode.row, curNode.col, curboard, new ArrayList<>(), pathUpLeft);
if(tmpUpLeftJump.isEmpty() == false) {
pathUpLeft.remove(pathUpLeft.size() - 1);
}
List<Board> tmpUpRightJump = goJumpKing(color, -1, 1,isKing, curNode.row, curNode.col, curboard, new ArrayList<>(), pathUpRight);
if(tmpUpRightJump.isEmpty() == false) {
pathUpRight.remove(pathUpRight.size() - 1);
}
List<Board> tmpDownLeftJump = goJumpKing(color,1, -1, isKing, curNode.row, curNode.col, curboard, new ArrayList<>(), pathDownLeft);
if(tmpDownLeftJump.isEmpty() == false) {
pathDownLeft.remove(pathDownLeft.size() - 1);
}
List<Board> tmpDownRightJump = goJumpKing(color,1, 1,isKing, curNode.row, curNode.col, curboard, new ArrayList<>(), pathDownRight);
if(tmpDownRightJump.isEmpty() == false) {
pathDownRight.remove(pathDownRight.size() - 1);
}
if(tmpUpLeftJump.isEmpty() && tmpUpRightJump.isEmpty() && tmpDownLeftJump.isEmpty() && tmpDownRightJump.isEmpty()) {
List<Board> tmpUpLeft = go(color, -1, -1, isKing, curNode.row, curNode.col, curboard, new ArrayList<>(), pathUpLeft);
List<Board> tmpUpRight = go(color, -1, 1, isKing, curNode.row, curNode.col, curboard, new ArrayList<>(), pathUpRight);
List<Board> tmpDownLeft = go(color, 1, -1, isKing, curNode.row, curNode.col, curboard, new ArrayList<>(), pathDownLeft);
List<Board> tmpDownRight = go(color, 1, 1, isKing, curNode.row, curNode.col, curboard, new ArrayList<>(), pathDownRight);
validPosBoards.addAll(tmpUpLeft);
validPosBoards.addAll(tmpUpRight);
validPosBoards.addAll(tmpDownLeft);
validPosBoards.addAll(tmpDownRight);
}
else {
validPosBoards.addAll(tmpUpLeftJump);
validPosBoards.addAll(tmpUpRightJump);
validPosBoards.addAll(tmpDownLeftJump);
validPosBoards.addAll(tmpDownRightJump);
}
}
return validPosBoards;
}
// 黑色左是+1 -1 黑色又是 +1 +1 白色左是 -1 -1 白色右是 -1 +1
private static List<Board> goJump(String color, int rowScalar, int colScalar, boolean isKing, int row, int col, Board curboard, List<String> jumpOver, List<String> path) {
List<Board> result = new ArrayList<>();
int nextStepRow = row + rowScalar;
int nextStepCol = col + colScalar;
String nextStep = nextStepRow + "," + nextStepCol;
// first, check whether there is something can eat
if( isValidPos(nextStepRow, nextStepCol) && isMeetEnemy(curboard, nextStepRow, nextStepCol, isKing, color) ) {
// 若遇到連續旗子 不一定是敵軍！！！！ 或 卡牆 都不能走
if( isValidPos( row + 2 * rowScalar, col + 2 * colScalar) == false || isAPieceThere(curboard, row + 2 * rowScalar, col + 2 * colScalar, path.get(0), path) == true ) {
return result;
}
// 確定可以吃一顆旗子
else {
if(jumpOver.contains(nextStep)) {
return result;
}
// 把所有被跳得點存起來,之後board清除掉
jumpOver.add(nextStep);
int nnRow = row + 2 * rowScalar;
int nnCol = col + 2 * colScalar;
path.add(nnRow + "," + nnCol);
List<Board> tmpLeft = new ArrayList<>();
List<Board> tmpRight = new ArrayList<>();
if(color.equals("BLACK") && isKing == false) {
tmpLeft = goJump(color, 1, -1, isKing, nnRow, nnCol, curboard, jumpOver, path);
if(tmpLeft.isEmpty() == false) {
path.remove(path.size() - 1);
jumpOver.remove(jumpOver.size() - 1);
}
tmpRight = goJump(color, 1, 1, isKing, nnRow, nnCol, curboard, jumpOver, path);
if(tmpRight.isEmpty() == false) {
path.remove(path.size() - 1);
jumpOver.remove(jumpOver.size() - 1);
}
}
else if(color.equals("WHITE") && isKing == false) {
tmpLeft = goJump(color, -1, -1, isKing, nnRow, nnCol, curboard, jumpOver, path);
if(tmpLeft.isEmpty() == false) {
path.remove(path.size() - 1);
jumpOver.remove(jumpOver.size() - 1);
}
tmpRight = goJump(color,-1, 1, isKing, nnRow, nnCol, curboard, jumpOver, path);
if(tmpRight.isEmpty() == false) {
path.remove(path.size() - 1);
jumpOver.remove(jumpOver.size() - 1);
}
}
// 這個可能不需要
// path.remove(path.size() - 1);
if(tmpLeft.isEmpty() && tmpRight.isEmpty()) {
// path.add(nnRow + "," + nnCol);
Board newBoard = new Board();
setUpNewBoard(newBoard, curboard.map, path.get(0), path.get(path.size() - 1), nnRow, nnCol, jumpOver, path, "jump");
result.add(newBoard);
return result;
}
else {
result.addAll(tmpLeft);
result.addAll(tmpRight);
return result;
}
}
}
return result;
}
private static List<Board> goJumpKing(String color, int rowScalar, int colScalar, boolean isKing, int row, int col, Board curboard, List<String> jumpOver, List<String> path) {
List<Board> result = new ArrayList<>();
int nextStepRow = row + rowScalar;
int nextStepCol = col + colScalar;
String nextStep = nextStepRow + "," + nextStepCol;
// first, check whether there is something can eat
if( isValidPos(nextStepRow, nextStepCol) && isMeetEnemy(curboard, nextStepRow, nextStepCol, isKing, color) ) {
// 若遇到連續敵軍(不一定是敵軍 有可能是 友軍 那一樣不能跳) 或 卡牆 都不能走
if( isValidPos( row + 2 * rowScalar, col + 2 * colScalar) == false || isAPieceThere(curboard, row + 2 * rowScalar, col + 2 * colScalar, path.get(0), path) == true ) {
return result;
}
// 確定可以吃一顆旗子
else {
if(jumpOver.contains(nextStep)) {
return result;
}
// 還有一個判斷式要判斷是不是走到底要變身ＫＩＮＧ
// 把所有被跳得點存起來,之後board清除掉
jumpOver.add(nextStep);
int nnRow = row + 2 * rowScalar;
int nnCol = col + 2 * colScalar;
path.add(nnRow + "," + nnCol);
List<Board> tmpUpLeft = new ArrayList<>();
List<Board> tmpUpRight = new ArrayList<>();
List<Board> tmpDownLeft = new ArrayList<>();
List<Board> tmpDownRight = new ArrayList<>();
tmpDownLeft = goJumpKing(color, 1, -1, isKing, nnRow, nnCol, curboard, jumpOver, path);
if(tmpDownLeft.isEmpty() == false) {
path.remove(path.size() - 1);
jumpOver.remove(jumpOver.size() - 1);
}
tmpDownRight = goJumpKing(color, 1, 1, isKing, nnRow, nnCol, curboard, jumpOver, path);
if(tmpDownRight.isEmpty() == false) {
path.remove(path.size() - 1);
jumpOver.remove(jumpOver.size() - 1);
}
tmpUpLeft = goJumpKing(color, -1, -1, isKing, nnRow, nnCol, curboard, jumpOver, path);
if(tmpUpLeft.isEmpty() == false) {
path.remove(path.size() - 1);
jumpOver.remove(jumpOver.size() - 1);
}
tmpUpRight = goJumpKing(color,-1, 1, isKing, nnRow, nnCol, curboard, jumpOver, path);
if(tmpUpRight.isEmpty() == false) {
path.remove(path.size() - 1);
jumpOver.remove(jumpOver.size() - 1);
}
// 這個可能不需要
// path.remove(path.size() - 1);
// jumpOver.remove(jumpOver.size() - 1);
if(tmpDownLeft.isEmpty() && tmpDownRight.isEmpty() && tmpUpLeft.isEmpty() && tmpUpRight.isEmpty() ) {
// path.add(nnRow + "," + nnCol);
// jumpOver.add(nextStep);
Board newBoard = new Board();
setUpNewBoard(newBoard, curboard.map, path.get(0), path.get(path.size() - 1), nnRow, nnCol, jumpOver, path, "jump");
result.add(newBoard);
return result;
}
else {
result.addAll(tmpDownLeft);
result.addAll(tmpDownRight);
result.addAll(tmpUpLeft);
result.addAll(tmpUpRight);
return result;
}
}
}
return result;
}
// 黑色左是+1 -1 黑色又是 +1 +1 白色左是 -1 -1 白色右是 -1 +1
private static List<Board> go(String color, int rowScalar, int colScalar, boolean isKing, int row, int col, Board curboard, List<String> jumpOver, List<String> path) {
List<Board> result = new ArrayList<>();
String curStep = row + "," + col;
int nextRow = row + rowScalar;
int nextCol = col + colScalar;
String nextStep = nextRow + "," + nextCol;
if( isValidPos(nextRow, nextCol) && curboard.map.containsKey(nextStep) == false ) {
// change map
path.add(nextStep);
Board newBoard = new Board();
setUpNewBoard(newBoard, curboard.map, curStep, nextStep, nextRow, nextCol, null, path, "go");
result.add(newBoard);
return result;
}
return result;
}
/**
* moving the node then create new board view
* */
private static void setUpNewBoard(Board newBoard, Map<String, Node> preMap, String fromPos, String toPos, int toPosRow, int toPosCol, List<String> removeOpenent, List<String> path, String mode ) {
// Deep copy 一份 newMap
newBoard.setMap(assignNewMap(newBoard, preMap));
// 改棋子的位置, 取得”始動“的棋子
Node movingNode = newBoard.map.get(fromPos);
String color = movingNode.getColor();
// 改座標
movingNode.col = toPosCol;
movingNode.row = toPosRow;
// if the node reach the king row then change to king
if(movingNode.isKing == false) {
isValidKingThenChange(color, movingNode);
}
newBoard.belongNode = fromPos;
newBoard.endNode = toPos;
newBoard.mode = mode;
// 可能不需要path 但要remove element
// [important] path 會不會被洗掉！！！！！！！！！！
// 記錄從哪裡來 paths裡至少都會有兩個element
for(String p : path) {
movingNode.paths.add(p);
}
if(color.equals("BLACK") && toPosRow == 7) {
movingNode.setIsKing(true);
}
else if(color.equals("WHITE") && toPosRow == 0) {
movingNode.setIsKing(true);
}
// 先移除舊的再新增新的可避免 (3,3)出發後來又回到(3,3)的狀況
newBoard.map.remove(fromPos);
newBoard.map.put(toPos, movingNode);
// removeOpenent 有可能是null
if(removeOpenent != null) {
for(String oppnent : removeOpenent) {
Node removeNode = newBoard.map.get(oppnent);
newBoard.map.remove(oppnent);
if(color.equals("BLACK")) {
newBoard.whiteLs.remove(removeNode);
}
else {
newBoard.blackLs.remove(removeNode);
}
}
}
// do we need to create a new map that store the node which removed by us?
}
private static void isValidKingThenChange(String color, Node node) {
if(color.equals("BLACK") && node.row == 7) {
node.isKing = true;
}
else if(color.equals("WHITE") && node.row == 0) {
node.isKing = true;
}
}
/**
* Deep copy the Node Map
* */
private static Map<String, Node> assignNewMap(Board newBoard, Map<String, Node> table) {
Map<String, Node> newTable = new HashMap<>();
for(Map.Entry<String, Node> entries: table.entrySet()) {
int row = entries.getValue().row;
int col = entries.getValue().col;
Node newNode = new Node(row, col);
newNode.color = entries.getValue().getColor();
newNode.isKing = entries.getValue().getIsKing();
if(newNode.color.equals("WHITE")) {
newBoard.whiteLs.add(newNode);
}
else {
newBoard.blackLs.add(newNode);
}
newTable.put(entries.getKey(), newNode);
}
return newTable;