feat: status effects (poison/burn), boss patterns, new relics

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

combat/combat.go

@@ -82,8 +82,8 @@ func AttemptFlee() bool {
 }
 
 func MonsterAI(m *entity.Monster, players []*entity.Player, turnNumber int) (targetIdx int, isAoE bool) {
-	if m.IsBoss && turnNumber%3 == 0 {
-		return -1, true
+	if m.IsBoss && turnNumber > 0 && turnNumber%3 == 0 {
+		return -1, true // AoE every 3 turns for all bosses
 	}
 	if m.TauntTarget {
 		for i, p := range players {

entity/item.go

@@ -22,6 +22,9 @@ const (
 	RelicATKBoost
 	RelicDEFBoost
 	RelicGoldBoost
+	RelicPoisonImmunity // immune to poison
+	RelicBurnResist     // halve burn damage
+	RelicLifeSteal      // heal 10% of damage dealt
 )
 
 type Relic struct {

entity/monster.go

@@ -33,6 +33,16 @@ var monsterDefs = map[MonsterType]monsterBase{
 	MonsterBoss20:     {"Archlich", 600, 40, 20, 20, true},
 }
 
+type BossPattern int
+
+const (
+	PatternNone    BossPattern = iota
+	PatternAoE                 // every 3 turns AoE
+	PatternPoison              // applies poison
+	PatternBurn                // applies burn to random player
+	PatternHeal                // heals self
+)
+
 type Monster struct {
 	Name        string
 	Type        MonsterType
@@ -41,6 +51,7 @@ type Monster struct {
 	IsBoss      bool
 	TauntTarget bool
 	TauntTurns  int
+	Pattern     BossPattern
 }
 
 func NewMonster(mt MonsterType, floor int) *Monster {

entity/player.go

@@ -1,5 +1,7 @@
 package entity
 
+import "fmt"
+
 type Class int
 
 const (
@@ -24,6 +26,20 @@ var classBaseStats = map[Class]classStats{
 	ClassRogue:   {85, 15, 4},
 }
 
+type StatusEffect int
+
+const (
+	StatusPoison StatusEffect = iota
+	StatusBurn
+	StatusFreeze
+)
+
+type ActiveEffect struct {
+	Type     StatusEffect
+	Duration int // remaining turns
+	Value    int // damage per turn or effect strength
+}
+
 type Player struct {
 	Name        string
 	Fingerprint string
@@ -33,6 +49,7 @@ type Player struct {
 	Gold        int
 	Inventory   []Item
 	Relics      []Relic
+	Effects     []ActiveEffect
 	Dead        bool
 	Fled        bool
 	SkillUses   int // remaining skill uses this combat
@@ -110,3 +127,59 @@ func (p *Player) EffectiveDEF() int {
 	}
 	return def
 }
+
+func (p *Player) AddEffect(e ActiveEffect) {
+	// Check relic immunities
+	for _, r := range p.Relics {
+		if e.Type == StatusPoison && r.Effect == RelicPoisonImmunity {
+			return // immune
+		}
+		if e.Type == StatusBurn && r.Effect == RelicBurnResist {
+			e.Value = e.Value / 2 // halve burn damage
+		}
+	}
+	// Don't stack same type, refresh duration
+	for i, existing := range p.Effects {
+		if existing.Type == e.Type {
+			p.Effects[i] = e
+			return
+		}
+	}
+	p.Effects = append(p.Effects, e)
+}
+
+func (p *Player) HasEffect(t StatusEffect) bool {
+	for _, e := range p.Effects {
+		if e.Type == t {
+			return true
+		}
+	}
+	return false
+}
+
+func (p *Player) TickEffects() (damages []string) {
+	var remaining []ActiveEffect
+	for _, e := range p.Effects {
+		switch e.Type {
+		case StatusPoison:
+			p.HP -= e.Value
+			if p.HP <= 0 {
+				p.HP = 1 // Poison can't kill, leaves at 1 HP
+			}
+			damages = append(damages, fmt.Sprintf("%s takes %d poison damage", p.Name, e.Value))
+		case StatusBurn:
+			p.HP -= e.Value
+			if p.HP <= 0 {
+				p.HP = 0
+				p.Dead = true
+			}
+			damages = append(damages, fmt.Sprintf("%s takes %d burn damage", p.Name, e.Value))
+		}
+		e.Duration--
+		if e.Duration > 0 {
+			remaining = append(remaining, e)
+		}
+	}
+	p.Effects = remaining
+	return
+}

game/event.go

@@ -114,6 +114,16 @@ func (s *GameSession) spawnBoss() {
 		mt = entity.MonsterBoss5
 	}
 	boss := entity.NewMonster(mt, s.state.FloorNum)
+	switch mt {
+	case entity.MonsterBoss5:
+		boss.Pattern = entity.PatternAoE
+	case entity.MonsterBoss10:
+		boss.Pattern = entity.PatternPoison
+	case entity.MonsterBoss15:
+		boss.Pattern = entity.PatternBurn
+	case entity.MonsterBoss20:
+		boss.Pattern = entity.PatternHeal
+	}
 	if s.state.SoloMode {
 		boss.HP = boss.HP / 2
 		boss.MaxHP = boss.HP

game/session.go

@@ -220,6 +220,8 @@ func (s *GameSession) GetState() GameState {
 		copy(cp.Inventory, p.Inventory)
 		cp.Relics = make([]entity.Relic, len(p.Relics))
 		copy(cp.Relics, p.Relics)
+		cp.Effects = make([]entity.ActiveEffect, len(p.Effects))
+		copy(cp.Effects, p.Effects)
 		players[i] = &cp
 	}
 

game/turn.go

@@ -73,6 +73,19 @@ collecting:
 }
 
 func (s *GameSession) resolvePlayerActions() {
+	// Tick status effects
+	for _, p := range s.state.Players {
+		if !p.IsOut() {
+			msgs := p.TickEffects()
+			for _, msg := range msgs {
+				s.addLog(msg)
+			}
+			if p.IsDead() {
+				s.addLog(fmt.Sprintf("☠ %s has fallen!", p.Name))
+			}
+		}
+	}
+
 	var intents []combat.AttackIntent
 	var intentOwners []string // track who owns each intent
 
@@ -299,6 +312,9 @@ func (s *GameSession) grantBossRelic() {
 		{Name: "Power Amulet", Effect: entity.RelicATKBoost, Value: 3, Price: 120},
 		{Name: "Iron Ward", Effect: entity.RelicDEFBoost, Value: 2, Price: 100},
 		{Name: "Gold Charm", Effect: entity.RelicGoldBoost, Value: 5, Price: 150},
+		{Name: "Antidote Charm", Effect: entity.RelicPoisonImmunity, Value: 0, Price: 100},
+		{Name: "Flame Guard", Effect: entity.RelicBurnResist, Value: 0, Price: 120},
+		{Name: "Life Siphon", Effect: entity.RelicLifeSteal, Value: 10, Price: 150},
 	}
 	for _, p := range s.state.Players {
 		if !p.IsOut() {
@@ -329,6 +345,32 @@ func (s *GameSession) resolveMonsterActions() {
 					}
 				}
 			}
+			if m.IsBoss {
+				// Boss special pattern
+				switch m.Pattern {
+				case entity.PatternPoison:
+					for _, p := range s.state.Players {
+						if !p.IsOut() {
+							p.AddEffect(entity.ActiveEffect{Type: entity.StatusPoison, Duration: 3, Value: 5})
+							s.addLog(fmt.Sprintf("%s poisons %s!", m.Name, p.Name))
+						}
+					}
+				case entity.PatternBurn:
+					for _, p := range s.state.Players {
+						if !p.IsOut() {
+							p.AddEffect(entity.ActiveEffect{Type: entity.StatusBurn, Duration: 2, Value: 8})
+							s.addLog(fmt.Sprintf("%s burns %s!", m.Name, p.Name))
+						}
+					}
+				case entity.PatternHeal:
+					healAmt := m.MaxHP / 10
+					m.HP += healAmt
+					if m.HP > m.MaxHP {
+						m.HP = m.MaxHP
+					}
+					s.addLog(fmt.Sprintf("%s regenerates %d HP!", m.Name, healAmt))
+				}
+			}
 		} else {
 			if targetIdx >= 0 && targetIdx < len(s.state.Players) {
 				p := s.state.Players[targetIdx]

ui/game_view.go

@@ -248,6 +248,21 @@ func renderPartyPanel(players []*entity.Player, submittedActions map[string]stri
 		hpBar := renderHPBar(p.HP, p.MaxHP, 16)
 		sb.WriteString(fmt.Sprintf("    %s %d/%d\n", hpBar, p.HP, p.MaxHP))
 
+		if len(p.Effects) > 0 {
+			var effects []string
+			for _, e := range p.Effects {
+				switch e.Type {
+				case entity.StatusPoison:
+					effects = append(effects, styleHeal.Render(fmt.Sprintf("☠Poison(%dt)", e.Duration)))
+				case entity.StatusBurn:
+					effects = append(effects, styleDamage.Render(fmt.Sprintf("🔥Burn(%dt)", e.Duration)))
+				case entity.StatusFreeze:
+					effects = append(effects, styleFlee.Render(fmt.Sprintf("❄Freeze(%dt)", e.Duration)))
+				}
+			}
+			sb.WriteString("    " + strings.Join(effects, " ") + "\n")
+		}
+
 		sb.WriteString(fmt.Sprintf("    ATK:%-3d DEF:%-3d  ", p.EffectiveATK(), p.EffectiveDEF()))
 		sb.WriteString(styleGold.Render(fmt.Sprintf("G:%d", p.Gold)))
 		sb.WriteString("\n")