feat(arena): 아레나 전투 화면 및 위젯 개선

- ArenaBattleScreen UI 개선
- 장비 비교 리스트 기능 확장

lib/src/features/arena/arena_battle_screen.dart

@@ -4,10 +4,12 @@ import 'package:flutter/material.dart';
 
 import 'package:asciineverdie/src/core/engine/arena_service.dart';
 import 'package:asciineverdie/src/core/model/arena_match.dart';
+import 'package:asciineverdie/src/core/model/combat_event.dart';
 import 'package:asciineverdie/src/core/model/game_state.dart';
 import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
 import 'package:asciineverdie/src/features/arena/widgets/arena_result_dialog.dart';
 import 'package:asciineverdie/src/features/game/widgets/ascii_animation_card.dart';
+import 'package:asciineverdie/src/features/game/widgets/combat_log.dart';
 import 'package:asciineverdie/src/shared/retro_colors.dart';
 
 // 임시 문자열 (추후 l10n으로 이동)
@@ -43,16 +45,20 @@ class _ArenaBattleScreenState extends State<ArenaBattleScreen>
   /// 현재 턴
   int _currentTurn = 0;
 
-  /// 도전자 HP
+  /// 도전자 HP/MP
   late int _challengerHp;
   late int _challengerHpMax;
+  late int _challengerMp;
+  late int _challengerMpMax;
 
-  /// 상대 HP
+  /// 상대 HP/MP
   late int _opponentHp;
   late int _opponentHpMax;
+  late int _opponentMp;
+  late int _opponentMpMax;
 
-  /// 전투 로그
-  final List<String> _battleLog = [];
+  /// 전투 로그 (CombatLogEntry 사용)
+  final List<CombatLogEntry> _battleLog = [];
 
   /// 전투 시뮬레이션 스트림 구독
   StreamSubscription<ArenaCombatTurn>? _combatSubscription;
@@ -70,15 +76,31 @@ class _ArenaBattleScreenState extends State<ArenaBattleScreen>
   int _challengerHpChange = 0;
   int _opponentHpChange = 0;
 
+  /// 최신 전투 이벤트 (테두리 이펙트용)
+  CombatEvent? _latestCombatEvent;
+
+  /// 전투 이벤트 아이콘 타이머 (페이드 아웃용)
+  Timer? _eventIconTimer;
+
+  /// 현재 표시 중인 이벤트 아이콘 타입
+  CombatEventType? _currentEventIcon;
+
+  /// 현재 표시 중인 스킬 이름
+  String? _currentSkillName;
+
   @override
   void initState() {
     super.initState();
 
-    // HP 초기화
+    // HP/MP 초기화
     _challengerHpMax = widget.match.challenger.finalStats?.hpMax ?? 100;
     _challengerHp = _challengerHpMax;
+    _challengerMpMax = widget.match.challenger.finalStats?.mpMax ?? 50;
+    _challengerMp = _challengerMpMax;
     _opponentHpMax = widget.match.opponent.finalStats?.hpMax ?? 100;
     _opponentHp = _opponentHpMax;
+    _opponentMpMax = widget.match.opponent.finalStats?.mpMax ?? 50;
+    _opponentMp = _opponentMpMax;
 
     // 플래시 애니메이션 초기화
     _challengerFlashController = AnimationController(
@@ -104,6 +126,7 @@ class _ArenaBattleScreenState extends State<ArenaBattleScreen>
   @override
   void dispose() {
     _combatSubscription?.cancel();
+    _eventIconTimer?.cancel();
     _challengerFlashController.dispose();
     _opponentFlashController.dispose();
     super.dispose();
@@ -128,6 +151,8 @@ class _ArenaBattleScreenState extends State<ArenaBattleScreen>
       _currentTurn++;
       _challengerHp = turn.challengerHp;
       _opponentHp = turn.opponentHp;
+      _challengerMp = turn.challengerMp ?? _challengerMp;
+      _opponentMp = turn.opponentMp ?? _opponentMp;
 
       // 도전자 HP 변화 감지
       if (oldChallengerHp != _challengerHp) {
@@ -141,29 +166,210 @@ class _ArenaBattleScreenState extends State<ArenaBattleScreen>
         _opponentFlashController.forward(from: 0.0);
       }
 
-      // 로그 추가
+      // 도전자 스킬 사용 로그
+      if (turn.challengerSkillUsed != null) {
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.challenger.characterName} uses '
+              '${turn.challengerSkillUsed}!',
+          timestamp: DateTime.now(),
+          type: CombatLogType.spell,
+        ));
+      }
+
+      // 도전자 회복 로그
+      if (turn.challengerHealAmount != null && turn.challengerHealAmount! > 0) {
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.challenger.characterName} heals '
+              '${turn.challengerHealAmount} HP!',
+          timestamp: DateTime.now(),
+          type: CombatLogType.heal,
+        ));
+      }
+
+      // 로그 추가 (CombatLogEntry 사용)
       if (turn.challengerDamage != null) {
+        final type = turn.isChallengerCritical
+            ? CombatLogType.critical
+            : CombatLogType.damage;
         final critText = turn.isChallengerCritical ? ' CRITICAL!' : '';
-        final evadeText = turn.isOpponentEvaded ? ' (Evaded)' : '';
-        final blockText = turn.isOpponentBlocked ? ' (Blocked)' : '';
-        _battleLog.add(
-          '${widget.match.challenger.characterName} deals '
-          '${turn.challengerDamage}$critText$evadeText$blockText',
-        );
+        final skillText = turn.challengerSkillUsed != null ? '' : '';
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.challenger.characterName} deals '
+              '${turn.challengerDamage}$critText$skillText',
+          timestamp: DateTime.now(),
+          type: type,
+        ));
+      }
+
+      // 상대 회피/블록 이벤트
+      if (turn.isOpponentEvaded) {
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.opponent.characterName} evaded!',
+          timestamp: DateTime.now(),
+          type: CombatLogType.evade,
+        ));
+      }
+      if (turn.isOpponentBlocked) {
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.opponent.characterName} blocked!',
+          timestamp: DateTime.now(),
+          type: CombatLogType.block,
+        ));
+      }
+
+      // 상대 스킬 사용 로그
+      if (turn.opponentSkillUsed != null) {
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.opponent.characterName} uses '
+              '${turn.opponentSkillUsed}!',
+          timestamp: DateTime.now(),
+          type: CombatLogType.spell,
+        ));
+      }
+
+      // 상대 회복 로그
+      if (turn.opponentHealAmount != null && turn.opponentHealAmount! > 0) {
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.opponent.characterName} heals '
+              '${turn.opponentHealAmount} HP!',
+          timestamp: DateTime.now(),
+          type: CombatLogType.heal,
+        ));
       }
 
       if (turn.opponentDamage != null) {
+        final type = turn.isOpponentCritical
+            ? CombatLogType.critical
+            : CombatLogType.monsterAttack;
         final critText = turn.isOpponentCritical ? ' CRITICAL!' : '';
-        final evadeText = turn.isChallengerEvaded ? ' (Evaded)' : '';
-        final blockText = turn.isChallengerBlocked ? ' (Blocked)' : '';
-        _battleLog.add(
-          '${widget.match.opponent.characterName} deals '
-          '${turn.opponentDamage}$critText$evadeText$blockText',
-        );
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.opponent.characterName} deals '
+              '${turn.opponentDamage}$critText',
+          timestamp: DateTime.now(),
+          type: type,
+        ));
+      }
+
+      // 도전자 회피/블록 이벤트
+      if (turn.isChallengerEvaded) {
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.challenger.characterName} evaded!',
+          timestamp: DateTime.now(),
+          type: CombatLogType.evade,
+        ));
+      }
+      if (turn.isChallengerBlocked) {
+        _battleLog.add(CombatLogEntry(
+          message: '${widget.match.challenger.characterName} blocked!',
+          timestamp: DateTime.now(),
+          type: CombatLogType.block,
+        ));
+      }
+
+      // 전투 이벤트 생성 (테두리 이펙트용)
+      _latestCombatEvent = _createCombatEvent(turn);
+
+      // 전투 이벤트 아이콘 표시
+      _showEventIcon(turn);
+    });
+  }
+
+  /// 전투 이벤트 아이콘 표시 (일정 시간 후 사라짐)
+  void _showEventIcon(ArenaCombatTurn turn) {
+    // 이전 타이머 취소
+    _eventIconTimer?.cancel();
+
+    // 스킬 이름 저장
+    _currentSkillName = turn.challengerSkillUsed ?? turn.opponentSkillUsed;
+
+    // 이벤트 타입 결정 (우선순위: 스킬 > 크리티컬 > 블록 > 회피 > 일반공격)
+    CombatEventType? eventType;
+    if (_currentSkillName != null) {
+      eventType = CombatEventType.playerSkill;
+    } else if (turn.isChallengerCritical || turn.isOpponentCritical) {
+      eventType = CombatEventType.playerAttack; // 크리티컬 표시용
+    } else if (turn.isChallengerBlocked || turn.isOpponentBlocked) {
+      eventType = CombatEventType.playerBlock;
+    } else if (turn.isChallengerEvaded || turn.isOpponentEvaded) {
+      eventType = CombatEventType.playerEvade;
+    } else if (turn.challengerDamage != null || turn.opponentDamage != null) {
+      eventType = CombatEventType.playerAttack;
+    }
+
+    _currentEventIcon = eventType;
+
+    // 1초 후 아이콘 숨김
+    _eventIconTimer = Timer(const Duration(milliseconds: 800), () {
+      if (mounted) {
+        setState(() {
+          _currentEventIcon = null;
+          _currentSkillName = null;
+        });
       }
     });
   }
 
+  /// ArenaCombatTurn에서 CombatEvent 생성 (테두리 이펙트용)
+  CombatEvent? _createCombatEvent(ArenaCombatTurn turn) {
+    final timestamp = DateTime.now().millisecondsSinceEpoch;
+
+    // 도전자 스킬 사용 (보라색 테두리)
+    if (turn.challengerSkillUsed != null && turn.challengerDamage != null) {
+      return CombatEvent.playerSkill(
+        timestamp: timestamp,
+        skillName: turn.challengerSkillUsed!,
+        damage: turn.challengerDamage!,
+        targetName: widget.match.opponent.characterName,
+        isCritical: turn.isChallengerCritical,
+      );
+    }
+
+    // 도전자 공격 이벤트 (우선순위: 크리티컬 > 일반 공격)
+    if (turn.challengerDamage != null) {
+      return CombatEvent.playerAttack(
+        timestamp: timestamp,
+        damage: turn.challengerDamage!,
+        targetName: widget.match.opponent.characterName,
+        isCritical: turn.isChallengerCritical,
+      );
+    }
+
+    // 도전자 회복 이벤트
+    if (turn.challengerHealAmount != null && turn.challengerSkillUsed != null) {
+      return CombatEvent.playerHeal(
+        timestamp: timestamp,
+        healAmount: turn.challengerHealAmount!,
+        skillName: turn.challengerSkillUsed,
+      );
+    }
+
+    // 도전자 방어 이벤트 (회피/블록)
+    if (turn.isChallengerEvaded) {
+      return CombatEvent.playerEvade(
+        timestamp: timestamp,
+        attackerName: widget.match.opponent.characterName,
+      );
+    }
+    if (turn.isChallengerBlocked) {
+      return CombatEvent.playerBlock(
+        timestamp: timestamp,
+        reducedDamage: turn.opponentDamage ?? 0,
+        attackerName: widget.match.opponent.characterName,
+      );
+    }
+
+    // 상대 공격 이벤트 (몬스터 공격으로 처리)
+    if (turn.opponentDamage != null) {
+      return CombatEvent.monsterAttack(
+        timestamp: timestamp,
+        damage: turn.opponentDamage!,
+        attackerName: widget.match.opponent.characterName,
+      );
+    }
+
+    return null;
+  }
+
   void _endBattle() {
     // 최종 결과 계산
     _result = _arenaService.executeCombat(widget.match);
@@ -205,6 +411,8 @@ class _ArenaBattleScreenState extends State<ArenaBattleScreen>
             _buildTurnIndicator(),
             // HP 바 (레트로 세그먼트 스타일)
             _buildRetroHpBars(),
+            // 전투 이벤트 아이콘 (HP 바와 애니메이션 사이)
+            _buildCombatEventIcons(),
             // ASCII 애니메이션 (중앙) - 기존 AsciiAnimationCard 재사용
             Padding(
               padding: const EdgeInsets.symmetric(horizontal: 8),
@@ -216,6 +424,7 @@ class _ArenaBattleScreenState extends State<ArenaBattleScreen>
                   shieldName: _hasShield(widget.match.challenger) ? 'shield' : null,
                   opponentRaceId: widget.match.opponent.race,
                   opponentHasShield: _hasShield(widget.match.opponent),
+                  latestCombatEvent: _latestCombatEvent,
                 ),
               ),
             ),
@@ -489,30 +698,98 @@ class _ArenaBattleScreenState extends State<ArenaBattleScreen>
   Widget _buildBattleLog() {
     return Container(
       margin: const EdgeInsets.all(12),
-      padding: const EdgeInsets.all(8),
       decoration: BoxDecoration(
         color: RetroColors.panelBgOf(context),
         borderRadius: BorderRadius.circular(8),
         border: Border.all(color: RetroColors.borderOf(context)),
       ),
-      child: ListView.builder(
-        reverse: true,
-        itemCount: _battleLog.length,
-        itemBuilder: (context, index) {
-          final reversedIndex = _battleLog.length - 1 - index;
-          return Padding(
-            padding: const EdgeInsets.symmetric(vertical: 2),
-            child: Text(
-              _battleLog[reversedIndex],
-              style: TextStyle(
-                fontFamily: 'JetBrainsMono',
-                fontSize: 7,
-                color: RetroColors.textSecondaryOf(context),
-              ),
+      child: CombatLog(entries: _battleLog),
+    );
+  }
+
+  /// 전투 이벤트 아이콘 영역 (HP 바와 애니메이션 사이)
+  ///
+  /// 메인 게임의 _buildBuffIcons() 스타일을 따름
+  /// 스킬 사용, 크리티컬, 블록, 회피 표시
+  Widget _buildCombatEventIcons() {
+    // 스킬 사용 또는 특수 액션만 표시
+    final hasSpecialEvent = _currentSkillName != null ||
+        _latestCombatEvent?.isCritical == true ||
+        _currentEventIcon == CombatEventType.playerBlock ||
+        _currentEventIcon == CombatEventType.playerEvade ||
+        _currentEventIcon == CombatEventType.playerParry ||
+        _currentEventIcon == CombatEventType.playerSkill;
+
+    if (!hasSpecialEvent) {
+      return const SizedBox(height: 28);
+    }
+
+    // 이벤트 타입에 따른 아이콘/색상 결정
+    final (icon, color) = _getEventIconData();
+
+    return AnimatedOpacity(
+      opacity: _currentEventIcon != null ? 1.0 : 0.0,
+      duration: const Duration(milliseconds: 200),
+      child: SizedBox(
+        height: 28,
+        child: Row(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            // 버프 아이콘 스타일 (CircularProgressIndicator)
+            Stack(
+              alignment: Alignment.center,
+              children: [
+                // 원형 진행률 표시 (펄스 효과용)
+                SizedBox(
+                  width: 24,
+                  height: 24,
+                  child: CircularProgressIndicator(
+                    value: 1.0,
+                    strokeWidth: 2,
+                    backgroundColor: Colors.grey.shade700,
+                    valueColor: AlwaysStoppedAnimation(color),
+                  ),
+                ),
+                // 아이콘
+                Icon(icon, size: 12, color: color),
+              ],
             ),
-          );
-        },
+            // 스킬 이름 표시
+            if (_currentSkillName != null) ...[
+              const SizedBox(width: 6),
+              Text(
+                _currentSkillName!,
+                style: TextStyle(
+                  fontFamily: 'PressStart2P',
+                  fontSize: 6,
+                  color: color,
+                ),
+              ),
+            ],
+          ],
+        ),
       ),
     );
   }
+
+  /// 이벤트 타입에 따른 아이콘, 색상 반환
+  (IconData, Color) _getEventIconData() {
+    // 스킬 사용
+    if (_currentSkillName != null ||
+        _currentEventIcon == CombatEventType.playerSkill) {
+      return (Icons.auto_fix_high, Colors.purple);
+    }
+
+    // 크리티컬 체크 (latestCombatEvent에서)
+    if (_latestCombatEvent?.isCritical == true) {
+      return (Icons.flash_on, Colors.yellow.shade600);
+    }
+
+    return switch (_currentEventIcon) {
+      CombatEventType.playerBlock => (Icons.shield, Colors.blue),
+      CombatEventType.playerEvade => (Icons.directions_run, Colors.cyan),
+      CombatEventType.playerParry => (Icons.sports_kabaddi, Colors.purple),
+      _ => (Icons.trending_up, Colors.lightBlue),
+    };
+  }
 }

lib/src/features/arena/widgets/arena_equipment_compare_list.dart

@@ -9,7 +9,7 @@ import 'package:asciineverdie/src/shared/retro_colors.dart';
 // 임시 문자열 (추후 l10n으로 이동)
 const _myEquipmentTitle = 'MY EQUIPMENT';
 const _enemyEquipmentTitle = 'ENEMY EQUIPMENT';
-const _selectSlotLabel = 'SELECT';
+const _selectedLabel = 'SELECTED';
 const _recommendedLabel = 'BEST';
 
 /// 좌우 대칭 장비 비교 리스트
@@ -50,6 +50,41 @@ class _ArenaEquipmentCompareListState extends State<ArenaEquipmentCompareList> {
   /// 현재 확장된 슬롯 (탭하여 비교 중인 슬롯)
   EquipmentSlot? _expandedSlot;
 
+  /// 스크롤 컨트롤러 (자동 스크롤용)
+  final ScrollController _scrollController = ScrollController();
+
+  /// 슬롯별 행 높이 (대략적 계산용)
+  static const double _rowHeight = 40.0;
+  static const double _expandedHeight = 200.0;
+
+  @override
+  void dispose() {
+    _scrollController.dispose();
+    super.dispose();
+  }
+
+  /// 선택된 슬롯으로 자동 스크롤
+  void _scrollToSlot(EquipmentSlot slot) {
+    final index = EquipmentSlot.values.indexOf(slot);
+    if (index < 0) return;
+
+    // 현재 확장된 슬롯까지의 높이 계산
+    double targetOffset = 0;
+    for (int i = 0; i < index; i++) {
+      targetOffset += _rowHeight;
+      if (_expandedSlot == EquipmentSlot.values[i]) {
+        targetOffset += _expandedHeight;
+      }
+    }
+
+    // 부드럽게 스크롤
+    _scrollController.animateTo(
+      targetOffset,
+      duration: const Duration(milliseconds: 300),
+      curve: Curves.easeOutCubic,
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     return Column(
@@ -60,6 +95,7 @@ class _ArenaEquipmentCompareListState extends State<ArenaEquipmentCompareList> {
         // 장비 리스트
         Expanded(
           child: ListView.builder(
+            controller: _scrollController,
             itemCount: EquipmentSlot.values.length,
             itemBuilder: (context, index) {
               final slot = EquipmentSlot.values[index];
@@ -137,9 +173,17 @@ class _ArenaEquipmentCompareListState extends State<ArenaEquipmentCompareList> {
         // 슬롯 행 (좌우 대칭)
         GestureDetector(
           onTap: () {
+            // 탭하면 즉시 선택 + 확장 + 자동 스크롤
+            widget.onSlotSelected(slot);
             setState(() {
               _expandedSlot = isExpanded ? null : slot;
             });
+            // 확장될 때만 스크롤 (다음 프레임에서 실행)
+            if (!isExpanded) {
+              WidgetsBinding.instance.addPostFrameCallback((_) {
+                _scrollToSlot(slot);
+              });
+            }
           },
           child: Container(
             padding: const EdgeInsets.symmetric(vertical: 6, horizontal: 4),
@@ -393,30 +437,37 @@ class _ArenaEquipmentCompareListState extends State<ArenaEquipmentCompareList> {
             ),
           ),
           const SizedBox(height: 10),
-          // 선택 버튼
-          SizedBox(
-            width: double.infinity,
-            child: ElevatedButton(
-              onPressed: () {
-                widget.onSlotSelected(slot);
-                setState(() => _expandedSlot = null);
-              },
-              style: ElevatedButton.styleFrom(
-                backgroundColor: RetroColors.goldOf(context),
-                foregroundColor: RetroColors.backgroundOf(context),
-                padding: const EdgeInsets.symmetric(vertical: 8),
-                shape: RoundedRectangleBorder(
-                  borderRadius: BorderRadius.circular(4),
-                ),
+          // 선택됨 인디케이터 (SELECT 버튼 대신)
+          Container(
+            padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 16),
+            decoration: BoxDecoration(
+              color: RetroColors.goldOf(context).withValues(alpha: 0.2),
+              borderRadius: BorderRadius.circular(4),
+              border: Border.all(
+                color: RetroColors.goldOf(context),
+                width: 2,
               ),
-              child: Text(
-                _selectSlotLabel,
-                style: TextStyle(
-                  fontFamily: 'PressStart2P',
-                  fontSize: 7,
-                  color: RetroColors.backgroundOf(context),
+            ),
+            child: Row(
+              mainAxisAlignment: MainAxisAlignment.center,
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                Icon(
+                  Icons.check_circle,
+                  color: RetroColors.goldOf(context),
+                  size: 16,
                 ),
-              ),
+                const SizedBox(width: 6),
+                Text(
+                  _selectedLabel,
+                  style: TextStyle(
+                    fontFamily: 'PressStart2P',
+                    fontSize: 7,
+                    color: RetroColors.goldOf(context),
+                    fontWeight: FontWeight.bold,
+                  ),
+                ),
+              ],
             ),
           ),
         ],