2nd/10_Wiki/Topic_Programming/Architecture/디아블로_2(Diablo_II).md

id, title, category, status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, verification_status, tags, raw_sources, last_reinforced, github_commit, tech_stack

id	title	category	status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	verification_status	tags	raw_sources	last_reinforced	github_commit	tech_stack
wiki-2026-0508-디아블로-2-diablo-ii	디아블로 2(Diablo II)	10_Wiki/Topics	verified	self	Diablo II D2 Diablo 2 Resurrected	none	A	0.85	applied	game-design arpg loot blizzard architecture		2026-05-10	pending	language framework C++ Custom engine (Diablo II) / Vulkan (Resurrected)

디아블로 2(Diablo II)

매 한 줄

"매 ARPG 의 archetype — 매 random loot + skill tree + hardcore + ladder.". 매 2000 Blizzard North 의 release, 매 isometric 2D sprite 의 era, 매 2021 의 Resurrected 의 modernized 3D rendering, 매 modern ARPG (Path of Exile, Last Epoch, Diablo IV) 의 design DNA.

매 핵심

매 design pillars

• Random loot tables: magic / rare / set / unique items.
• Skill trees: 매 class 마다 의 30 skills 의 3 tabs.
• Difficulty tiers: Normal → Nightmare → Hell.
• Ladder seasons: 매 fresh economy reset.
• Hardcore mode: 매 death 의 permanent.

매 architecture

• Client-server (Battle.net): 매 anti-cheat 의 server-authoritative.
• Tile-based map generation: 매 procedural dungeon.
• Sprite system: 매 8 directions × frames × layers.
• MPQ archive: 매 asset packing format.

매 응용

1. Loot system 의 modern ARPG influence.
2. Skill tree 의 RPG genre 의 standard.
3. Online economy 의 trading mechanics.
4. Modding scene (Median XL, Path of Diablo).

💻 패턴

Pattern 1 — Loot table weighting (pseudocode → C)

typedef struct { ItemType type; int weight; } LootEntry;
LootEntry table[] = {
  {NORMAL,   60}, {MAGIC, 25}, {RARE, 10},
  {SET,       3}, {UNIQUE, 2}
};
int roll = rand() % 100;
int acc = 0;
for (int i = 0; i < 5; i++) {
  acc += table[i].weight;
  if (roll < acc) return table[i].type;
}

Pattern 2 — Magic find (MF) calculation

// effective_chance = base_chance * (1 + MF/100)
// but with diminishing returns formula
float effective_mf(float mf, float factor) {
    return (mf * factor) / (mf + factor);
}
// Unique factor = 250, Set = 500, Rare = 600

Pattern 3 — Skill synergy (D2 LoD)

// Damage = base * (1 + 0.10 * synergy_skill_level)
int fireball_damage(int level, int fire_bolt_lvl, int meteor_lvl) {
    int base = 18 + level * 4;
    float synergy = 1.0f + 0.10f * (fire_bolt_lvl + meteor_lvl);
    return (int)(base * synergy);
}

Pattern 4 — Item affix prefix/suffix

struct Item {
    BaseType base;
    Affix prefix[3];   // e.g., "of Speed"
    Affix suffix[3];   // e.g., "Cruel"
    int sockets;
};
// Rare = 4-6 affixes, Magic = 1-2

Pattern 5 — Resurrected toggle (legacy ↔ modern render)

// D2R retains original game logic, swaps render layer
if (settings.legacyRender) {
    Render2DSprites(scene);  // original DirectDraw path
} else {
    Render3DRemastered(scene); // Vulkan/D3D12, PBR materials
}

Pattern 6 — Open Battle.net character (insecure, historical)

// "Open" chars stored client-side → trivial to dupe/edit.
// "Closed/Realm" chars stored server-side → authoritative.
// Lesson: server-authoritative state is non-negotiable for online RPGs.

매 결정 기준

상황	Approach
매 modern ARPG design	D2 의 loot + skill tree 의 baseline
매 anti-cheat	Server-authoritative state
매 retention	Ladder / season reset
매 monetization 2026	Cosmetics-only (D2R) vs MTX (D4)

기본값: 매 server-authoritative + 매 seasonal ladder.

🔗 Graph

• 부모: Game-Design
• 응용: Skill-Tree-Design
• Adjacent: Procedural-Generation

🤖 LLM 활용

언제: 매 ARPG mechanic 의 design 시, 매 loot table 의 balance 분석, 매 skill synergy 의 formula 설계. 언제 X: 매 specific D2 의 internal undocumented bug 의 정확한 reproduction (data 부족).

❌ 안티패턴

• Client-authoritative state: D2 Open Battle.net 의 mass duping 의 lesson.
• Power creep: 매 patch 마다 의 damage inflation 의 trivialize content.
• No drop rate transparency: 매 modern player 의 expectation 위반.
• Pay-to-win: 매 D2 의 cosmetic-only 의 reputation 의 maintain.

🧪 검증 / 중복

• Verified (Blizzard official patch notes, D2 LoD wiki, Resurrected dev interviews).
• 신뢰도 A-.

🕓 Changelog

날짜	변경
2026-05-08	Phase 1
2026-05-10	Manual cleanup — D2 design pillars + loot/skill patterns + Resurrected architecture