# Entropia Universe Attachment Mechanics - Technical Breakdown

**Source:** Domain expert knowledge from user (@ImpulsiveFPS)  
**Date:** 2026-02-09

---

## 1. Amplifiers (Amps)

**Most common attachment for damage increase.**

### Mechanics:
- **Additional Damage:** Added to weapon's base damage
- **Cost Per Shot:** Increases SIGNIFICANTLY
  - Pay weapon's normal ammo/decay PLUS amplifier decay
- **Economy:** Amp is "Eco" only if weapon Efficiency remains high

### Strategic Use:
- Higher DPS = kill faster = less time mob hits you
- Saves money on armor decay and healing
- Most players use amps for speed, not efficiency

---

## 2. Sights & Scopes

**"Skill-based" attachments.**

### Mechanics:
- **Stats:** Aiming/Skill Increase Bonus + Zoom
- **High-end versions:** Critical Hit Chance or Critical Damage bonuses
- **Cost Per Shot:** Increases SLIGHTLY
  - No ammo cost
  - Decay (lose value) every trigger pull

### Economy Analysis:
- "Standard" scopes provide ~0.1% efficiency boost
- **Veteran advice:** Don't use basic ones - decay cost outweighs tiny accuracy benefit
- Only use if trying to "skill up" faster

---

## 3. Absorbers (Deterioration Absorbers)

**Overlooked by beginners - protects weapon durability.**

### Examples:
- ArMatrix Extender series

### Mechanics:
- **What they do:** "Absorb" percentage of weapon's decay
- **Stats:** No damage or accuracy - strictly protect durability
- **Cost Per Shot:** Technically NEUTRAL or CHEAPER
  - Absorber decays, but prevents gun from decaying

### Strategic Use:
- Use on Limited (L) weapons with high "Markup"
- Makes expensive guns last longer
- Saves money long-term on high-markup weapons

---

## 4. Enhancers ("Slot" Attachments)

**High-risk, high-reward attachments.**

### Types:
- Damage Enhancer
- Economy Enhancer
- Range Enhancer
- etc.

### Mechanics:
- **Stats:** Massive boosts (+10% Damage, -1% Weapon Decay)
- **Cost Per Shot:** HIGH RISK
  - Don't just decay - have RANDOM CHANCE TO BREAK and disappear completely

### Strategic Use:
- Only recommended for HIGH-LEVEL hunting
- "Killing it before it kills you" survival strategy
- Not for casual/beginner hunters

---

## Important Note: Sights Stacking

**Weapons can have multiple sights:**
- Weapon can have a sight
- Scope can ALSO have a sight
- **Maximum:** 2 sights possible (weapon + scope)

---

## Cost Calculation Formula (Correct)

### Base Weapon Cost Per Shot:
```
Cost = (weapon_decay_pec + weapon_ammo_pec) / 100  # PED
```

### With Amplifier:
```
Cost = (weapon_decay_pec + weapon_ammo_pec + amp_decay_pec) / 100
```

### With Scope:
```
Cost = (weapon_decay_pec + weapon_ammo_pec + scope_decay_pec) / 100
# (ammo cost unchanged)
```

### With Absorber:
```
Weapon decay prevented = weapon_decay_pec × absorption_rate
Net cost = (weapon_decay_pec × (1 - absorption_rate) + absorber_decay_pec + weapon_ammo_pec) / 100
```

### With Enhancer:
```
Base cost + enhancer_decay
# Plus risk of total enhancer loss (breakage)
```

---

## Implementation Notes for Lemontropia Suite

1. **Amp Cost:** Add amp_decay_pec to every shot cost
2. **Scope Cost:** Add scope_decay_pec (no ammo impact)
3. **Absorber:** Reduce weapon decay by absorption %, add absorber decay
4. **Enhancer:** Add decay + implement breakage chance mechanic
5. **Double Sights:** Support weapon sight + scope sight combination

**Key Insight:** Amps increase DPS but cost more per shot. Scopes/Absorbers are situational. Enhancers are high-risk endgame.

---

# Armor Plating Mechanics

**Source:** Domain expert knowledge from user (@ImpulsiveFPS)  
**Date:** 2026-02-09

## How It Works (The "Shield" Layer)

When a monster hits you, damage flows through layers in specific order:

```
Incoming Damage → PLATE → ARMOR → PLAYER HEALTH
```

### Example:
- **Armor:** Protects against 10 Impact damage
- **Plate:** Protects against 15 Impact damage  
- **Monster hits:** 20 Impact damage

**Result:**
- Plate absorbs 15 → Plate takes decay
- Armor absorbs remaining 5 → Armor takes decay  
- Player takes **0 damage**

---

## Why Use Plating?

### 1. Specialization
Don't buy "Acid Armor" - just add **Acid Plates** to your current suit.

### 2. Saving Money (Efficiency)
- Plates usually have **lower decay** cost than high-end armor
- Plates are **easier to repair** than armor
- Cheaper to let plate take damage than armor itself

### 3. Boosting Weak Armor
Make "weak" starter armor viable for mid-level monsters by adding strong plating.

---

## The Rules of Plating

### Rule 1: One Plate Per Piece
- You have **7 armor pieces:** Head, Chest, Arms (2), Hands (2), Legs, Feet
- **Maximum:** 1 plate per piece = 7 plates total

### Rule 2: Matching Types (CRITICAL)
- **You want all 7 plates to be the same type**
- If you only plate your chest, and monster hits your leg → **Plate does nothing!**
- Partial plating = wasted protection

### Rule 3: Drag and Drop
- Drag plate onto armor piece in inventory to "slot" it
- Just like weapon attachments

---

## Armor Piece Breakdown

| Slot | Can Have Plate? |
|------|----------------|
| Head | Yes |
| Chest/Harness | Yes |
| Left Arm | Yes |
| Right Arm | Yes |
| Left Hand | Yes |
| Right Hand | Yes |
| Thighs/Legs | Yes |
| Feet | Yes |

**Total:** 7 plate slots

---

## Decay Mechanics

### When Damage is Absorbed:
1. **Plate takes decay first** (primary layer)
2. **Armor takes decay second** (overflow only)
3. **Player health reduced** (if damage exceeds both)

### Cost Optimization Strategy:
- **Cheap plates:** High protection, low decay
- **Use plates for:** Specific damage types (Acid, Cold, etc.)
- **Use armor for:** General protection + cosmetic looks

---

## Implementation Notes for Lemontropia Suite

1. **Plate Selection:** Show 7 plate slots (one per armor piece)
2. **Protection Stacking:** Plate protection + Armor protection = Total
3. **Decay Order:** Plate decays first, armor decays second
4. **Matching Warning:** Alert if player has mismatched plates
5. **Cost Calculation:** Track plate decay separately from armor decay