Phase 4b Abilities and skill trees is finished
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@@ -1269,9 +1269,9 @@ class CombatService:
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character = self.character_service.get_character(char_id, user_id)
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# Add XP and check for level up
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old_level = character.level
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character.experience += xp_per_player
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# TODO: Add level up logic based on XP thresholds
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leveled_up = character.add_experience(xp_per_player)
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if leveled_up:
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rewards.level_ups.append(char_id)
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# Add gold
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character.gold += gold_per_player
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@@ -1279,9 +1279,6 @@ class CombatService:
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# Save character
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self.character_service.update_character(character, user_id)
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if character.level > old_level:
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rewards.level_ups.append(char_id)
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except Exception as e:
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logger.error("Failed to distribute rewards to character",
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char_id=char_id,
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@@ -365,17 +365,162 @@ effects_applied:
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### Experience & Leveling
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| Source | XP Gain |
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|--------|---------|
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| Combat victory | Based on enemy difficulty |
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| Quest completion | Fixed quest reward |
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| Story milestones | Major plot points |
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| Exploration | Discovering new locations |
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**XP Sources:**
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| Source | XP Gain | Notes |
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|--------|---------|-------|
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| Combat victory | Based on enemy `experience_reward` field | Divided evenly among party members |
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| Quest completion | Fixed quest reward | Defined in quest data |
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| Story milestones | Major plot points | AI-driven narrative rewards |
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| Exploration | Discovering new locations | Future enhancement |
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**Level Progression:**
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- XP required increases per level (exponential curve)
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- Each level grants +1 skill point
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- Stats may increase based on class
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The XP requirement for each level follows an exponential curve using the formula:
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```
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XP Required = 100 × (current_level ^ 1.5)
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```
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| Level | XP Required | Cumulative XP |
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|-------|-------------|---------------|
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| 1→2 | 100 | 100 |
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| 2→3 | 282 | 382 |
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| 3→4 | 519 | 901 |
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| 4→5 | 800 | 1,701 |
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| 5→6 | 1,118 | 2,819 |
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| 6→7 | 1,469 | 4,288 |
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| 7→8 | 1,849 | 6,137 |
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| 8→9 | 2,254 | 8,391 |
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| 9→10 | 2,683 | 11,074 |
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**Leveling Mechanics:**
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- Each level grants **+1 skill point** to spend in skill trees
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- Skill points calculated: `level - unlocked_skills.length`
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- Overflow XP automatically carries to next level
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- Level up triggers automatically when threshold reached
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- Base stats remain constant (progression via skill trees & equipment)
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**Implementation:**
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- Leveling logic lives in `Character` model (`add_experience()`, `level_up()` methods)
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- No separate service needed (OOP design pattern)
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- See `api/app/models/character.py` lines 312-358
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### Skill Trees
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**Overview:**
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Each character class has **2-3 skill trees** representing different specializations or playstyles. Players earn **1 skill point per level** to unlock skills, which provide permanent bonuses and unlock combat abilities.
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**Skill Points:**
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```
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Available Skill Points = Character Level - Unlocked Skills Count
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```
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**Skill Tree Structure:**
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Each skill tree contains **5 tiers** of increasing power:
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| Tier | Description | Typical Effects |
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|------|-------------|-----------------|
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| **1** | Entry-level skills | Basic abilities, small stat bonuses (+3-5) |
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| **2** | Intermediate skills | Enhanced abilities, moderate bonuses (+5-8) |
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| **3** | Advanced skills | Powerful abilities, passive effects |
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| **4** | Expert skills | Ability enhancements, large bonuses (+10-15) |
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| **5** | Ultimate skills | Class-defining abilities, massive bonuses (+20+) |
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**Prerequisites:**
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Skills have prerequisites that create progression paths:
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- Tier 1 skills have **no prerequisites** (open choices)
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- Higher tier skills require **specific lower-tier skills**
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- Cannot skip tiers (must unlock Tier 1 before Tier 2, etc.)
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- Can mix between trees within same class
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**Skill Effects:**
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Skills provide multiple types of benefits:
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1. **Stat Bonuses** - Permanent increases to stats
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```yaml
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effects:
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stat_bonuses:
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strength: 10
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defense: 5
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```
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2. **Ability Unlocks** - Grant new combat abilities
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```yaml
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effects:
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abilities:
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- shield_bash
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- riposte
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```
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3. **Passive Effects** - Special mechanics
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```yaml
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effects:
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passive_effects:
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- stun_resistance
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- damage_reflection
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```
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4. **Ability Enhancements** - Modify existing abilities
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```yaml
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effects:
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ability_enhancements:
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fireball:
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damage_bonus: 15
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mana_cost_reduction: 5
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```
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5. **Combat Bonuses** - Crit chance, crit multiplier, etc.
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```yaml
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effects:
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combat_bonuses:
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crit_chance: 0.1 # +10%
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crit_multiplier: 0.5 # +0.5x
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```
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**Example Progression Path:**
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**Vanguard - Shield Bearer Tree:**
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```
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Level 1: No skills yet (0 points)
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Level 2: Unlock "Shield Bash" (Tier 1) → Gain shield bash ability
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Level 3: Unlock "Fortify" (Tier 1) → +5 defense bonus
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Level 4: Unlock "Shield Wall" (Tier 2, requires Shield Bash) → Shield wall ability
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Level 5: Unlock "Iron Skin" (Tier 2, requires Fortify) → +5 constitution
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Level 6: Unlock "Guardian's Resolve" (Tier 3) → +10 defense + stun resistance
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...
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```
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**Class Specializations:**
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Each class offers distinct playstyles through their trees:
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| Class | Tree 1 | Tree 2 | Tree 3 |
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|-------|--------|--------|--------|
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| **Vanguard** | Shield Bearer (Tank) | Weapon Master (DPS) | - |
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| **Arcanist** | Pyromancy (Fire) | Cryomancy (Ice) | Electromancy (Lightning) |
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| **Wildstrider** | Beast Mastery | Nature Magic | - |
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| **Assassin** | Shadow Arts | Poison Master | - |
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| **Luminary** | Holy Magic | Divine Protection | - |
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| **Necromancer** | Death Magic | Corpse Summoning | - |
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| **Lorekeeper** | Arcane Knowledge | Support Magic | - |
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| **Oathkeeper** | Divine Wrath | Holy Shield | - |
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**Design Notes:**
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- Skill choices are **permanent** (no respec system currently)
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- Players can mix skills from different trees within same class
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- Some skills are **mutually exclusive** by design (different playstyles)
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- Skill point allocation encourages specialization vs. generalization
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**Implementation:**
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- Skills defined in class YAML files at `api/app/data/classes/*.yaml`
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- Character stores only `unlocked_skills: List[str]` (skill IDs)
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- Bonuses calculated dynamically via `Character.get_effective_stats()`
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- Full documentation: [SKILLS_AND_ABILITIES.md](SKILLS_AND_ABILITIES.md)
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### Loot System
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