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//: enumerated/RoShamBo5.java

// Multiple dispatching using an EnumMap of EnumMaps.

package enumerated;

import java.util.*;

import static enumerated.Outcome.*;

enum RoShamBo5 implements Competitor<RoShamBo5> {

PAPER, SCISSORS, ROCK;

static EnumMap<RoShamBo5,EnumMap<RoShamBo5,Outcome>>

table = new EnumMap<RoShamBo5,

EnumMap<RoShamBo5,Outcome>>(RoShamBo5.class);

static {

for(RoShamBo5 it : RoShamBo5.values())

table.put(it,

new EnumMap<RoShamBo5,Outcome>(RoShamBo5.class));

initRow(PAPER, DRAW, LOSE, WIN);

initRow(SCISSORS, WIN, DRAW, LOSE);

initRow(ROCK, LOSE, WIN, DRAW);

}

static void initRow(RoShamBo5 it,

Outcome vPAPER, Outcome vSCISSORS, Outcome vROCK) {

EnumMap<RoShamBo5,Outcome> row =

RoShamBo5.table.get(it);

row.put(RoShamBo5.PAPER, vPAPER);

row.put(RoShamBo5.SCISSORS, vSCISSORS);

row.put(RoShamBo5.ROCK, vROCK);

}

public Outcome compete(RoShamBo5 it) {

return table.get(this).get(it);

}

public static void main(String[] args) {

RoShamBo.play(RoShamBo5.class, 20);

}

} /* Same output as RoShamBo2.java *///:~