feat(progression): unlock stealth from potion invisibility

2026-08-15 00:01:26 -04:00
parent 248c5e72c1
commit 91c9e7b9ad
9 changed files with 430 additions and 13 deletions
@@ -0,0 +1,122 @@
+package games.dmg.spigotstealth;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.function.Consumer;
+import java.util.function.LongSupplier;
+
+/** Accumulates qualifying potion invisibility using monotonic elapsed time. */
+public final class QualifyingInvisibilityService {
+    private final StealthStateManager stateManager;
+    private final long unlockThresholdMillis;
+    private final LongSupplier nanoTime;
+    private final Consumer<UUID> unlockNotifier;
+    private final Map<UUID, ActiveInterval> activeIntervals = new HashMap<>();
+
+    public QualifyingInvisibilityService(
+            StealthStateManager stateManager,
+            Duration unlockThreshold,
+            LongSupplier nanoTime,
+            Consumer<UUID> unlockNotifier) {
+        this.stateManager = Objects.requireNonNull(stateManager, "stateManager");
+        this.unlockThresholdMillis = Objects.requireNonNull(unlockThreshold, "unlockThreshold").toMillis();
+        this.nanoTime = Objects.requireNonNull(nanoTime, "nanoTime");
+        this.unlockNotifier = Objects.requireNonNull(unlockNotifier, "unlockNotifier");
+    }
+
+    public CompletableFuture<Void> begin(UUID playerId, String playerName, Instant startedAt) {
+        Objects.requireNonNull(playerId, "playerId");
+        Objects.requireNonNull(startedAt, "startedAt");
+        long nowNanos = nanoTime.getAsLong();
+        ActiveInterval previous = activeIntervals.put(playerId, new ActiveInterval(nowNanos, startedAt, playerName));
+        return record(playerId, playerName, elapsedMillis(previous, nowNanos), startedAt, true);
+    }
+
+    public CompletableFuture<Void> checkpoint(UUID playerId) {
+        long nowNanos = nanoTime.getAsLong();
+        ActiveInterval previous = activeIntervals.get(playerId);
+        if (previous == null) {
+            return CompletableFuture.completedFuture(null);
+        }
+        long elapsedMillis = elapsedMillis(previous, nowNanos);
+        Instant continuedAt = previous.startedAt().plusMillis(elapsedMillis);
+        activeIntervals.put(playerId, new ActiveInterval(nowNanos, continuedAt, previous.playerName()));
+        return record(playerId, previous.playerName(), elapsedMillis, continuedAt, true);
+    }
+
+    public CompletableFuture<Void> stop(UUID playerId) {
+        long nowNanos = nanoTime.getAsLong();
+        ActiveInterval previous = activeIntervals.remove(playerId);
+        if (previous == null) {
+            return CompletableFuture.completedFuture(null);
+        }
+        return record(playerId, previous.playerName(), elapsedMillis(previous, nowNanos), null, false);
+    }
+
+    public boolean isQualifying(UUID playerId) {
+        return activeIntervals.containsKey(playerId);
+    }
+
+    public Set<UUID> activePlayerIds() {
+        return Set.copyOf(activeIntervals.keySet());
+    }
+
+    public CompletableFuture<Void> stopAll() {
+        CompletableFuture<?>[] stops = activePlayerIds().stream()
+                .map(this::stop)
+                .toArray(CompletableFuture[]::new);
+        return CompletableFuture.allOf(stops);
+    }
+
+    public long currentAccumulatedMillis(UUID playerId) {
+        long persisted = stateManager.snapshot().player(playerId).accumulatedMillis();
+        return Math.addExact(persisted, elapsedMillis(activeIntervals.get(playerId), nanoTime.getAsLong()));
+    }
+
+    private CompletableFuture<Void> record(
+            UUID playerId,
+            String playerName,
+            long elapsedMillis,
+            Instant qualifyingSince,
+            boolean active) {
+        AtomicBoolean unlockedNow = new AtomicBoolean();
+        CompletableFuture<Void> saved = stateManager.update(state -> {
+            PlayerStealthState player = state.player(playerId);
+            long accumulated = Math.addExact(player.accumulatedMillis(), elapsedMillis);
+            boolean unlocked = player.unlocked() || accumulated >= unlockThresholdMillis;
+            unlockedNow.set(unlocked && !player.unlocked());
+            PlayerStealthState updated = new PlayerStealthState(
+                    playerId,
+                    playerName,
+                    accumulated,
+                    unlocked,
+                    player.preparedLogin(),
+                    player.concealed(),
+                    active ? qualifyingSince : null,
+                    player.unknownFields());
+            return state.withPlayer(updated);
+        });
+        return saved.thenRun(() -> {
+            if (unlockedNow.get()) {
+                unlockNotifier.accept(playerId);
+            }
+        });
+    }
+
+    private static long elapsedMillis(ActiveInterval interval, long nowNanos) {
+        if (interval == null) {
+            return 0L;
+        }
+        long elapsedNanos = Math.max(0L, nowNanos - interval.startedNanos());
+        return Duration.ofNanos(elapsedNanos).toMillis();
+    }
+
+    private record ActiveInterval(long startedNanos, Instant startedAt, String playerName) { }
+}