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Cell.java
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Cell.java
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package minesweeper;
import java.util.List;
class Cell {
private final int row;
private final int col;
private final boolean mine;
private final int neighborMines;
private final Channel<CellSignal> inChannel;
private final List<Channel<CellSignal>> outChannels;
private final Channel<GameSignal> stateChannel;
private boolean revealed;
private boolean flagged;
private int neighborFlags;
Cell(
int row,
int col,
boolean mine,
int neighborMines,
Channel<CellSignal> inChannel,
List<Channel<CellSignal>> outChannels,
Channel<GameSignal> stateChannel) {
this.row = row;
this.col = col;
this.mine = mine;
this.neighborMines = neighborMines;
this.inChannel = inChannel;
this.outChannels = outChannels;
this.stateChannel = stateChannel;
}
void start() {
Thread.ofVirtual().start(this::run);
}
private void run() {
while (true) {
switch (inChannel.take()) {
case LEFT_CLICK -> {
if (revealed && neighborMines == neighborFlags) {
revealNeighbors();
} else {
revealMe();
}
}
case RIGHT_CLICK -> {
if (revealed && neighborMines == neighborFlags) {
revealNeighbors();
} else if (!revealed) {
flagged = !flagged;
tellNeighborsAboutFlag();
}
}
case NEIGHBOR_REVEAL -> revealMe();
case NEIGHBOR_FLAG_SET -> neighborFlags++;
case NEIGHBOR_FLAG_UNSET -> neighborFlags--;
case STOP -> {
return;
}
}
sendGameSignal();
}
}
private void sendGameSignal() {
stateChannel.put(new GameSignal.StateChange(new CellState(row, col, mine, revealed, flagged, neighborMines)));
}
private void revealMe() {
if (!flagged && !revealed) {
revealed = true;
if (!mine && neighborMines == 0) {
revealNeighbors();
}
}
}
private void revealNeighbors() {
tellNeighbors(CellSignal.NEIGHBOR_REVEAL);
}
private void tellNeighborsAboutFlag() {
var signal = flagged
? CellSignal.NEIGHBOR_FLAG_SET
: CellSignal.NEIGHBOR_FLAG_UNSET;
tellNeighbors(signal);
}
private void tellNeighbors(CellSignal signal) {
for (var ch : outChannels) {
ch.put(signal);
}
}
}