feat(progression): add tyrant unlock choices

design/log.md

@@ -6,6 +6,16 @@ description: Chronological record of material decisions affecting the Spigot Tyr
 
 # Spigot Tyrant Design Log
 
+## 2026-08-14 — Tyrant progression completed
+
+- Completed US-003 with exact Tyrant-on-Vigilante kill attribution, level and choice rewards, pause guards, one-time purchases, and reign reset behavior.
+- Added `/tyrant choices` status output and `/tyrant buy <unlock>` with durable atomic state updates and clear failure feedback.
+- Verified progression, duplicate purchase, authorization, paused-state, reset, command presentation, metadata, and persistence behavior with the Gradle test suite.
+
+## 2026-08-14 — Tyrant progression implementation started
+
+- US-003 begins with test-first kill attribution, one-time unlock purchases, and player-visible choice status.
+
 ## 2026-08-14 — Configuration and persistence completed
 
 - Completed US-012 with validated defaults for ranges, timers, effects, items, messages, and mob restrictions, including runtime Bukkit section parsing.

design/user-stories/us-003-progress-and-purchase-unlocks.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-003: Progress and purchase Tyrant unlocks"
 description: Let the Tyrant earn and spend choices by personally defeating the Vigilante.
-status: backlog
+status: done
 ---
 
 # US-003: Progress and purchase Tyrant unlocks
@@ -11,14 +11,14 @@ As the **Tyrant**, I want to earn one meaningful choice for defeating the Vigila
 
 ## Acceptance criteria
 
-- [ ] The Tyrant gains one level and one unlock choice only when personally credited with killing the current Vigilante.
-- [ ] A Vigilante death caused by another player, the environment, or the Vigilante does not level the Tyrant.
-- [ ] Available purchases are Assassin, Fixer, Tamer, roster intelligence, permanent Resistance, and permanent Strength.
-- [ ] Each class or ability can be purchased at most once during a reign.
-- [ ] A menu or command clearly identifies purchased, available, and unavailable choices.
-- [ ] A purchase consumes exactly one unspent choice and cannot be duplicated by retries or concurrent input.
-- [ ] Progress cannot be earned or spent while the game is paused.
-- [ ] Levels, purchases, and unspent choices survive logout and restart but reset when the reign ends.
+- [x] The Tyrant gains one level and one unlock choice only when personally credited with killing the current Vigilante.
+- [x] A Vigilante death caused by another player, the environment, or the Vigilante does not level the Tyrant.
+- [x] Available purchases are Assassin, Fixer, Tamer, roster intelligence, permanent Resistance, and permanent Strength.
+- [x] Each class or ability can be purchased at most once during a reign.
+- [x] A menu or command clearly identifies purchased, available, and unavailable choices.
+- [x] A purchase consumes exactly one unspent choice and cannot be duplicated by retries or concurrent input.
+- [x] Progress cannot be earned or spent while the game is paused.
+- [x] Levels, purchases, and unspent choices survive logout and restart but reset when the reign ends.
 
 ## Related
 

src/main/java/games/dmg/spigottyrant/PurchaseResult.java

@@ -0,0 +1,10 @@
+package games.dmg.spigottyrant;
+
+import java.util.Objects;
+
+public record PurchaseResult(GameState state, PurchaseStatus status) {
+    public PurchaseResult {
+        Objects.requireNonNull(state, "state");
+        Objects.requireNonNull(status, "status");
+    }
+}

src/main/java/games/dmg/spigottyrant/PurchaseStatus.java

@@ -0,0 +1,9 @@
+package games.dmg.spigottyrant;
+
+public enum PurchaseStatus {
+    PURCHASED,
+    GAME_NOT_RUNNING,
+    NOT_TYRANT,
+    NO_CHOICES,
+    ALREADY_PURCHASED
+}

src/main/java/games/dmg/spigottyrant/SpigotTyrantPlugin.java

@@ -2,6 +2,7 @@ package games.dmg.spigottyrant;
 
 import java.io.IOException;
 import java.util.Map;
+import java.util.Objects;
 import java.util.logging.Level;
 import org.bukkit.plugin.java.JavaPlugin;
 
@@ -25,6 +26,8 @@ public final class SpigotTyrantPlugin extends JavaPlugin {
             return;
         }
 
+        Objects.requireNonNull(getCommand("tyrant"), "Missing tyrant command metadata")
+            .setExecutor(new TyrantCommand(stateManager, new TyrantProgressionService()));
         getServer().getScheduler().runTaskTimer(this, stateManager::saveIfDirty, 600L, 600L);
         getLogger().info("Spigot Tyrant enabled.");
     }

src/main/java/games/dmg/spigottyrant/TyrantCommand.java

@@ -0,0 +1,86 @@
+package games.dmg.spigottyrant;
+
+import java.util.Locale;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+public final class TyrantCommand implements CommandExecutor {
+    private final TyrantStateManager stateManager;
+    private final TyrantProgressionService progression;
+
+    public TyrantCommand(
+        TyrantStateManager stateManager,
+        TyrantProgressionService progression
+    ) {
+        this.stateManager = stateManager;
+        this.progression = progression;
+    }
+
+    @Override
+    public boolean onCommand(
+        CommandSender sender,
+        Command command,
+        String label,
+        String[] arguments
+    ) {
+        if (!(sender instanceof Player player)) {
+            sender.sendMessage("This command must be used by a player.");
+            return true;
+        }
+        if (arguments.length == 0 || arguments[0].equalsIgnoreCase("choices")) {
+            showChoices(player);
+            return true;
+        }
+        if (arguments.length == 2 && arguments[0].equalsIgnoreCase("buy")) {
+            buy(player, arguments[1]);
+            return true;
+        }
+        player.sendMessage(ChatColor.YELLOW + "Usage: /tyrant choices | /tyrant buy <unlock>");
+        return true;
+    }
+
+    private void showChoices(Player player) {
+        GameState state = stateManager.game();
+        player.sendMessage(ChatColor.GOLD + "Tyrant unlock choices: " + state.unspentChoices());
+        for (TyrantUnlock unlock : TyrantUnlock.values()) {
+            String status;
+            if (state.purchases().contains(unlock)) {
+                status = "PURCHASED";
+            } else if (state.lifecycle() == GameLifecycle.RUNNING
+                    && state.tyrantId().filter(player.getUniqueId()::equals).isPresent()
+                    && state.unspentChoices() > 0) {
+                status = "AVAILABLE";
+            } else {
+                status = "LOCKED";
+            }
+            player.sendMessage(ChatColor.YELLOW + "[" + status + "] " + unlock.name());
+        }
+    }
+
+    private void buy(Player player, String requestedUnlock) {
+        TyrantUnlock unlock;
+        try {
+            unlock = TyrantUnlock.valueOf(requestedUnlock.toUpperCase(Locale.ROOT));
+        } catch (IllegalArgumentException exception) {
+            player.sendMessage(ChatColor.RED + "Unknown unlock. Use /tyrant choices.");
+            return;
+        }
+        PurchaseResult[] result = new PurchaseResult[1];
+        stateManager.updateGame(current -> {
+            result[0] = progression.purchase(current, player.getUniqueId(), unlock);
+            return result[0].state();
+        });
+        if (result[0].status() == PurchaseStatus.PURCHASED) {
+            stateManager.saveIfDirty();
+            player.sendMessage(ChatColor.GREEN + "Purchased " + unlock.name() + ".");
+        } else {
+            player.sendMessage(
+                ChatColor.RED + "Could not purchase " + unlock.name() + ": "
+                    + result[0].status().name().toLowerCase(Locale.ROOT).replace('_', ' ')
+            );
+        }
+    }
+}

src/main/java/games/dmg/spigottyrant/TyrantProgressionService.java

@@ -0,0 +1,75 @@
+package games.dmg.spigottyrant;
+
+import java.util.Optional;
+import java.util.UUID;
+
+public final class TyrantProgressionService {
+    public GameState recordVigilanteDeath(GameState state, Optional<UUID> killerId) {
+        if (state.lifecycle() != GameLifecycle.RUNNING
+                || state.tyrantId().isEmpty()
+                || state.vigilanteId().isEmpty()
+                || killerId.isEmpty()
+                || !state.tyrantId().orElseThrow().equals(killerId.orElseThrow())) {
+            return state;
+        }
+        return copyProgress(
+            state,
+            state.tyrantLevel() + 1,
+            state.unspentChoices() + 1,
+            state.purchases()
+        );
+    }
+
+    public PurchaseResult purchase(
+        GameState state,
+        UUID buyerId,
+        TyrantUnlock unlock
+    ) {
+        if (state.lifecycle() != GameLifecycle.RUNNING) {
+            return new PurchaseResult(state, PurchaseStatus.GAME_NOT_RUNNING);
+        }
+        if (state.tyrantId().isEmpty() || !state.tyrantId().orElseThrow().equals(buyerId)) {
+            return new PurchaseResult(state, PurchaseStatus.NOT_TYRANT);
+        }
+        if (state.purchases().contains(unlock)) {
+            return new PurchaseResult(state, PurchaseStatus.ALREADY_PURCHASED);
+        }
+        if (state.unspentChoices() == 0) {
+            return new PurchaseResult(state, PurchaseStatus.NO_CHOICES);
+        }
+        java.util.Set<TyrantUnlock> purchases = java.util.EnumSet.noneOf(TyrantUnlock.class);
+        purchases.addAll(state.purchases());
+        purchases.add(unlock);
+        GameState updated = copyProgress(
+            state,
+            state.tyrantLevel(),
+            state.unspentChoices() - 1,
+            purchases
+        );
+        return new PurchaseResult(updated, PurchaseStatus.PURCHASED);
+    }
+
+    public GameState resetReignProgression(GameState state) {
+        return copyProgress(state, 0, 0, java.util.Set.of());
+    }
+
+    private static GameState copyProgress(
+        GameState state,
+        int level,
+        int choices,
+        java.util.Set<TyrantUnlock> purchases
+    ) {
+        return new GameState(
+            state.lifecycle(),
+            state.tyrantId(),
+            state.vigilanteId(),
+            state.pendingTyrant(),
+            state.pendingVigilante(),
+            state.pausedAt(),
+            state.accumulatedPausedTime(),
+            level,
+            choices,
+            purchases
+        );
+    }
+}

src/main/resources/plugin.yml

@@ -4,3 +4,7 @@ main: games.dmg.spigottyrant.SpigotTyrantPlugin
 api-version: "1.20"
 description: Asymmetric Tyrant, Vigilante, Follower, and specialist class gameplay.
 author: dmg.games
+commands:
+  tyrant:
+    description: View and use Spigot Tyrant game features.
+    usage: /tyrant [choices|buy <unlock>]

src/test/java/games/dmg/spigottyrant/PluginMetadataTest.java

@@ -20,6 +20,9 @@ final class PluginMetadataTest {
         assertEquals("SpigotTyrant", plugin.get("name"));
         assertEquals("games.dmg.spigottyrant.SpigotTyrantPlugin", plugin.get("main"));
         assertEquals("1.20", plugin.get("api-version"));
+        Map<?, ?> commands = (Map<?, ?>) plugin.get("commands");
+        assertNotNull(commands);
+        assertNotNull(commands.get("tyrant"));
     }
 
     @Test

src/test/java/games/dmg/spigottyrant/TyrantCommandTest.java

@@ -0,0 +1,50 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.bukkit.command.Command;
+import org.bukkit.entity.Player;
+import org.junit.jupiter.api.Test;
+import org.mockito.ArgumentCaptor;
+
+final class TyrantCommandTest {
+    @Test
+    void choicesClearlyIdentifyPurchasedAvailableAndUnavailableUnlocks() {
+        UUID tyrantId = UUID.fromString("11111111-1111-1111-1111-111111111111");
+        GameState state = new GameState(
+            GameLifecycle.RUNNING,
+            Optional.of(tyrantId),
+            Optional.empty(),
+            Optional.empty(),
+            Optional.empty(),
+            Optional.empty(),
+            Duration.ZERO,
+            1,
+            1,
+            Set.of(TyrantUnlock.STRENGTH)
+        );
+        TyrantStateManager manager = mock(TyrantStateManager.class);
+        when(manager.game()).thenReturn(state);
+        Player player = mock(Player.class);
+        when(player.getUniqueId()).thenReturn(tyrantId);
+        TyrantCommand command = new TyrantCommand(manager, new TyrantProgressionService());
+
+        command.onCommand(player, mock(Command.class), "tyrant", new String[] {"choices"});
+
+        ArgumentCaptor<String> messages = ArgumentCaptor.forClass(String.class);
+        verify(player, org.mockito.Mockito.atLeastOnce()).sendMessage(messages.capture());
+        List<String> all = messages.getAllValues();
+        assertTrue(all.stream().anyMatch(message -> message.contains("PURCHASED")
+            && message.contains("STRENGTH")));
+        assertTrue(all.stream().anyMatch(message -> message.contains("AVAILABLE")
+            && message.contains("ASSASSIN")));
+    }
+}

src/test/java/games/dmg/spigottyrant/TyrantProgressionServiceTest.java

@@ -0,0 +1,124 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.time.Duration;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class TyrantProgressionServiceTest {
+    private static final UUID TYRANT = UUID.fromString("11111111-1111-1111-1111-111111111111");
+    private static final UUID VIGILANTE = UUID.fromString("22222222-2222-2222-2222-222222222222");
+    private static final UUID OTHER = UUID.fromString("33333333-3333-3333-3333-333333333333");
+    private final TyrantProgressionService service = new TyrantProgressionService();
+
+    @Test
+    void tyrantPersonallyKillingCurrentVigilanteEarnsOneLevelAndChoice() {
+        GameState before = runningState(0, 1, Set.of());
+
+        GameState after = service.recordVigilanteDeath(before, Optional.of(TYRANT));
+
+        assertEquals(1, after.tyrantLevel());
+        assertEquals(2, after.unspentChoices());
+    }
+
+    @Test
+    void otherEnvironmentalAndPausedDeathsDoNotEarnProgress() {
+        GameState running = runningState(2, 0, Set.of());
+        GameState paused = new GameState(
+            GameLifecycle.PAUSED,
+            running.tyrantId(),
+            running.vigilanteId(),
+            running.pendingTyrant(),
+            running.pendingVigilante(),
+            Optional.of(java.time.Instant.parse("2026-08-14T12:00:00Z")),
+            Duration.ZERO,
+            2,
+            0,
+            Set.of()
+        );
+
+        assertEquals(running, service.recordVigilanteDeath(running, Optional.of(OTHER)));
+        assertEquals(running, service.recordVigilanteDeath(running, Optional.empty()));
+        assertEquals(paused, service.recordVigilanteDeath(paused, Optional.of(TYRANT)));
+    }
+
+    @Test
+    void purchaseConsumesOneChoiceAndCannotBeBoughtTwice() {
+        GameState before = runningState(1, 2, Set.of());
+
+        PurchaseResult first = service.purchase(before, TYRANT, TyrantUnlock.ASSASSIN);
+        PurchaseResult duplicate = service.purchase(
+            first.state(), TYRANT, TyrantUnlock.ASSASSIN
+        );
+
+        assertEquals(PurchaseStatus.PURCHASED, first.status());
+        assertEquals(1, first.state().unspentChoices());
+        assertTrue(first.state().purchases().contains(TyrantUnlock.ASSASSIN));
+        assertEquals(PurchaseStatus.ALREADY_PURCHASED, duplicate.status());
+        assertEquals(first.state(), duplicate.state());
+    }
+
+    @Test
+    void nonTyrantPausedAndNoChoicePurchasesAreRejected() {
+        GameState noChoices = runningState(0, 0, Set.of());
+        GameState paused = new GameState(
+            GameLifecycle.PAUSED,
+            noChoices.tyrantId(),
+            noChoices.vigilanteId(),
+            noChoices.pendingTyrant(),
+            noChoices.pendingVigilante(),
+            Optional.of(java.time.Instant.parse("2026-08-14T12:00:00Z")),
+            Duration.ZERO,
+            0,
+            1,
+            Set.of()
+        );
+
+        assertEquals(PurchaseStatus.NO_CHOICES,
+            service.purchase(noChoices, TYRANT, TyrantUnlock.FIXER).status());
+        assertEquals(PurchaseStatus.NOT_TYRANT,
+            service.purchase(runningState(0, 1, Set.of()), OTHER, TyrantUnlock.FIXER).status());
+        PurchaseResult pausedResult = service.purchase(paused, TYRANT, TyrantUnlock.FIXER);
+        assertEquals(PurchaseStatus.GAME_NOT_RUNNING, pausedResult.status());
+        assertFalse(pausedResult.state().purchases().contains(TyrantUnlock.FIXER));
+    }
+
+    @Test
+    void endingReignClearsLevelChoicesAndPurchases() {
+        GameState progressed = runningState(
+            4,
+            2,
+            Set.of(TyrantUnlock.ASSASSIN, TyrantUnlock.STRENGTH)
+        );
+
+        GameState reset = service.resetReignProgression(progressed);
+
+        assertEquals(0, reset.tyrantLevel());
+        assertEquals(0, reset.unspentChoices());
+        assertEquals(Set.of(), reset.purchases());
+    }
+
+    private static GameState runningState(
+        int level,
+        int choices,
+        Set<TyrantUnlock> purchases
+    ) {
+        return new GameState(
+            GameLifecycle.RUNNING,
+            Optional.of(TYRANT),
+            Optional.of(VIGILANTE),
+            Optional.empty(),
+            Optional.empty(),
+            Optional.empty(),
+            Duration.ZERO,
+            level,
+            choices,
+            purchases
+        );
+    }
+}