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| package net.jacekk.bridge;
|
| import java.util.Arrays;
|
| public class BridgeCompute {
|
| // Points for tricks (minor, major, no trump)
| protected int tricks[] = {20, 30, 30};
|
| // Points for [i] undertricks
| protected int undertricks[][][] = {
| { // non vulnerable
| {0, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650},// normal
| {0, 100, 300, 500, 700, 900, 1100, 1300, 1500, 1700, 1900, 2100, 2300, 2500},// double
| {0, 200, 600, 1000, 1400, 1800, 2200, 2600, 3000, 3400, 3800, 4200, 4600, 5000} // redouble
| },
| { // vulnerable
| {0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300},// normal
| {0, 200, 500, 800, 1100, 1400, 1700, 2000, 2300, 2600, 2900, 3200, 3500, 3800},// double
| {0, 400, 1000, 1600, 2200, 2800, 3400, 4000, 4600, 5200, 5800, 6400, 7000, 7600} // redouble
| }
| };
|
| // Points required per Milton Work Point Count (from 20 up)
| protected int PC[][] = {
| {0, 50, 70, 110, 200, 300, 350, 400, 430, 460, 490, 600, 700, 900,
| 1000, 1100, 1200, 1400, 1400, 1400, 1400
| },
| {0, 50, 70, 110, 290, 440, 520, 600, 630, 660, 690, 800, 1050, 1350,
| 1500, 1650, 1800, 2100, 2100, 2100, 2100
| }
| };
|
| // Points required for [i] IMPs
| protected int IMPs[] = { 0, 20, 50, 90, 130, 170, 220, 270, 320, 370, 430, 500, 600, 750, 900,
| 1100, 1300, 1500, 1750, 2000, 2250, 2500, 3000, 3500, 4000, 9999999};
|
|
| // percent* properties are related to scoring system by Adam Królik
| // See: http://www.gplewniak.republika.pl/strony/zapis.html
|
| // Points received - [i] used to access row from percent variable
| protected int percentPoints[][] = {
| {0, 50, 90, 120, 150, 180, 210, 300, 400, 430, 460, 490, 520, 800, 920, 940, 980, 990,
| 1020, 1400, 1440, 1520, 1530, 9999999}, // non vulnerable
| {0, 50, 90, 120, 150, 180, 210, 500, 600, 630, 660, 690, 720, 810, 1370, 1390, 1430,
| 1440, 1470, 1700, 2000, 2220, 2230, 9999999} // vulnerable
| };
|
| // Work Point Count - [i] used to access column from property percent
| protected int percentPCs[] = {0, 6, 10, 16, 21, 25, 31, 35, 9999999};
|
| // Percent score per [i] - points scored, [j] - PCs had
| protected int percent[][] = {
| {-1, -1, -1, 50, 44, 26, 8, 0},
| {83, 74, 65, 56, 47, 29, 11, 0},
| {86, 77, 68, 59, 50, 32, 14, 0},
| {89, 80, 71, 62, 53, 35, 17, 0},
| {92, 83, 74, 65, 56, 38, 20, 2},
| {95, 86, 77, 68, 59, 41, 23, 5},
| {98, 89, 80, 71, 62, 44, 26, 8},
| {100, 92, 83, 74, 65, 47, 29, 11},
| {100, 95, 86, 77, 68, 50, 32, 14},
| {100, 98, 89, 80, 71, 53, 35, 17},
| {100, 100, 92, 83, 74, 56, 38, 20},
| {100, 100, 95, 86, 77, 59, 41, 23},
| {100, 100, 98, 89, 80, 62, 44, 26},
| {100, 100, 100, 92, 83, 65, 47, 29},
| {100, 100, 100, 95, 86, 68, 50, 32},
| {100, 100, 100, 98, 89, 71, 53, 35},
| {100, 100, 100, 100, 92, 74, 56, 38},
| {100, 100, 100, 100, 95, 77, 59, 41},
| {100, 100, 100, 100, 98, 80, 62, 44},
| {100, 100, 100, 100, 100, 83, 65, 47},
| {100, 100, 100, 100, 100, 86, 68, 50},
| {100, 100, 100, 100, 100, 89, 71, 53},
| {100, 100, 100, 100, 100, 100, 95, 90}
| };
|
| // Finds IMP score for points given (using IMPs property)
| protected int getIMPs(int points) {
| int position = Arrays.binarySearch(this.IMPs, points);
| if (position < 0) {
| return -position - 2;
| }
| return position;
| }
|
| // Finds percent score for data given (using percent* properties)
| protected int getPercent(int PC, int points, int vulnerability) {
| int positionPoints = Arrays.binarySearch(this.percentPoints[vulnerability], points);
| int positionPCs = Arrays.binarySearch(this.percentPCs, PC);
| if (positionPoints < 0) positionPoints = -positionPoints - 2;
| if (positionPCs < 0) positionPCs = -positionPCs - 2;
|
| return this.percent[positionPoints][positionPCs];
| }
|
| public void validateInput(BridgeInput input) throws BridgeInputException {
| if (input.bid < 0 || input.bid > 7) {
| throw new BridgeInputException(BridgeInputException.Error.CONTRACT_LEVEL_INVALID);
| }
|
| if (input.suit == null) {
| throw new BridgeInputException(BridgeInputException.Error.CONTRACT_SUIT_INVALID);
| }
|
| if (input.contract == null) {
| throw new BridgeInputException(BridgeInputException.Error.CONTRACT_DOUBLE_INVALID);
| }
|
| if (input.PC < 0 || input.PC > 40) {
| throw new BridgeInputException(BridgeInputException.Error.PC_INVALID);
| }
|
| if (input.tricks < 0 || input.tricks > 13) {
| throw new BridgeInputException(BridgeInputException.Error.TRICKS_INVALID);
| }
|
| if (input.bid == 0 && input.PC < 20) {
| throw new BridgeInputException(BridgeInputException.Error.PASSES_INVALID);
| }
| }
|
| public BridgeResult getResultForInput(BridgeInput input) throws BridgeInputException {
| validateInput(input);
|
| int weVulnerable = (input.weVulnerable) ? 1 : 0;
| int theyVulnerable = (input.theyVulnerable) ? 1 : 0;
| int bid = input.bid;
|
| BridgeResult result = new BridgeResult();
|
| // 4 passes
| if (input.bid == 0) {
| result.winners = BridgeResult.Side.They;
| result.points = this.PC[weVulnerable][input.PC - 20];
| result.IMPs = this.getIMPs(result.points);
| result.percent = 100 - this.getPercent(input.PC, 0, weVulnerable);
| return result;
| }
|
|
| int multiplier = input.contract.multiplier;
| int dbl = input.contract.tableIndex;
| int tricks = input.tricks;
|
| // Result in points
| int points;
| // Points for tricks bid
| int pointsForTricksBid;
| // Result minus points required, according to PC property
| int pointsForScoring;
|
| // Number of overtricks (or undertricks if negative)
| int additionalTricks = tricks - 6 - bid;
|
| // Contract made
| if (additionalTricks >= 0) {
| pointsForTricksBid = this.tricks[input.suit.tableIndex] * bid * multiplier;
| if (input.suit.equals(BridgeInput.Suit.NOTRUMP)) {
| // First trick in no trump game is worth 10 points more
| pointsForTricksBid += 10 * multiplier;
| }
| points = pointsForTricksBid;
|
| // Add points for overtricks
|
| // Ordinary contract
| if (input.contract.equals(BridgeInput.Contract.NORMAL)) {
| points += this.tricks[input.suit.tableIndex] * additionalTricks;
| }
| // Contract doubled/redoubled
| else {
| points += (!input.weVulnerable ? 50 : 100) * multiplier * additionalTricks;
|
| // Bonus for winning doubled/redoubled contract
| points += 25 * multiplier;
| }
|
| if (bid == 6) {
| // Bonus for small slam
| points += (!input.weVulnerable ? 500 : 750);
| } else if (bid == 7) {
| // Bonus for grand slam
| points += (!input.weVulnerable ? 1000 : 1500);
| }
|
| if (pointsForTricksBid >= 100) {
| // Bonus for game
| points += (!input.weVulnerable ? 300 : 500);
| } else {
| // Bonus for part-game
| points += 50;
| }
| }
| // Contract defeated
| else {
| // Points for undertricks (for defending side)
| points = -1 * this.undertricks[weVulnerable][dbl][-1 * additionalTricks];
| }
|
| // Deduct points required
| if (input.PC >= 20) {
| pointsForScoring = points - this.PC[weVulnerable][input.PC - 20];
| } else {
| pointsForScoring = points + this.PC[theyVulnerable][20 - input.PC];
| }
|
| // Score for defeaters
| if (pointsForScoring < 0) {
| result.winners = BridgeResult.Side.They;
| result.pointsBefore = -1 * points;
| result.points = -1 * pointsForScoring;
|
| if (points < 0) {
| result.percent = getPercent(40 - input.PC, -points, theyVulnerable);
| } else {
| result.percent = 100 - getPercent(input.PC, points, weVulnerable);
| }
| }
| // Score for declarers
| else {
| result.winners = BridgeResult.Side.We;
| result.pointsBefore = points;
| result.points = pointsForScoring;
|
| if (points > 0) {
| result.percent = getPercent(input.PC, points, weVulnerable);
| } else {
| result.percent = 100 - getPercent(40 - input.PC, -points, theyVulnerable);
| }
| }
|
| result.IMPs = getIMPs(result.points);
|
|
| return result;
| }
| }
|
|
