====== Buff System - Code References ======

===== Core Classes =====
  * [[https://github.com/NYRDS/remixed-dungeon/blob/master/RemixedDungeon/src/main/java/com/nyrds/pixeldungeon/mechanics/buffs/BuffFactory.java|BuffFactory.java]] - Central registry for all buff types, maps class names to buff classes
  * [[https://github.com/NYRDS/remixed-dungeon/blob/master/RemixedDungeon/src/main/java/com/watabou/pixeldungeon/actors/buffs/Buff.java|Buff.java]] - Base class for all buffs
  * [[https://github.com/NYRDS/remixed-dungeon/blob/master/RemixedDungeon/src/main/java/com/watabou/pixeldungeon/actors/Char.java|Char.java]] - Actor base class with buff management (buff(), hasBuff(), buffLevel(), removeBuff())
  * [[https://github.com/NYRDS/remixed-dungeon/blob/master/RemixedDungeon/src/main/java/com/watabou/pixeldungeon/ui/BuffIndicator.java|BuffIndicator.java]] - Icon constants for buff display in UI

===== Key Interfaces =====
  * [[https://github.com/NYRDS/remixed-dungeon/blob/master/RemixedDungeon/src/main/java/com/watabou/pixeldungeon/actors/hero/Doom.java|Doom.java]] - Interface for deadly buffs that trigger special death conditions
  * [[https://github.com/NYRDS/remixed-dungeon/blob/master/RemixedDungeon/src/main/java/com/nyrds/pixeldungeon/mechanics/buffs/ArtifactBuff.java|ArtifactBuff.java]] - Base class for artifact-granted buffs
  * [[https://github.com/NYRDS/remixed-dungeon/blob/master/RemixedDungeon/src/main/java/com/nyrds/pixeldungeon/mechanics/buffs/TemporaryBuff.java|TemporaryBuff.java]] - Base class for timed buffs

===== Buff Registration =====
BuffFactory maintains a static map of buff class names to Class objects:
<code java>
private static final Map<String, Class<? extends Buff>> buffMap = new HashMap<>();

static {
    // Register all buff classes
    buffMap.put("Bleeding", Bleeding.class);
    buffMap.put("Poison", Poison.class);
    // ... etc
}
</code>

Retrieving buff by name:
<code java>
public static Buff getBuffByName(String className) {
    Class<? extends Buff> buffClass = buffMap.get(className);
    return buffClass != null ? buffClass.newInstance() : null;
}
</code>

===== Char Buff Management =====
  * **buff(Class<? extends Buff> buffClass)** - Apply buff with default duration
  * **buff(Class<? extends Buff> buffClass, float duration)** - Apply buff with specific duration
  * **hasBuff(Class<? extends Buff> buffClass)** - Check if buff is present
  * **buffLevel(Class<? extends Buff> buffClass)** - Get number of buff stacks
  * **removeBuff(Class<? extends Buff> buffClass)** - Remove specific buff
  * **clearBuffs()** - Remove all buffs

===== Doom Buffs (Special Death) =====
Buffs implementing Doom interface:
  * [[mr:necrotism_buff|Necrotism]] - Spreads to nearby, kills on death
  * [[mr:stone_blood_buff|StoneBlood]] - Wall walking, immurement on death
  * [[mr:cursed_king_buff|CursedKing]] - Cursed King artifact buff
  * [[mr:lich_essence_buff|LichEssence]] - Lich transformation buff

===== Artifact Buffs =====
Buffs granted by artifacts (implement ArtifactBuff):
  * [[mr:stone_blood_buff|StoneBlood]] - Ring of Stone Walking
  * [[mr:lich_essence_buff|LichEssence]] - Lich artifact
  * [[mr:cursed_king_buff|CursedKing]] - Cursed King artifact
  * [[mr:abyssal_presence_buff|AbyssalPresence]] - Abyssal artifact

===== String Resources =====
Standard string naming pattern for buffs:
  * `{BuffName}_Name` - Display name
  * `{BuffName}_Info` - Description
  * `{BuffName}_Death` - Death message
  * `ResultDescriptions_{BuffName}` - Death reason description

===== JSON Configuration =====
Most buffs are registered in BuffFactory, not configured via JSON.
Some artifact buffs are configured in:
  * `initHeroes.json` - Starting buffs for hero classes
  * `levelsDesc/Bestiary.json` - Mob buff immunities

===== Related mr Pages =====
  * [[mr:buff_indicator|Buff Indicator Constants]]
  * [[mr:doom_interface|Doom Interface]]
  * [[mr:artifact_buff|Artifact Buff Base Class]]
  * [[mr:necrotism_buff|Necrotism Buff]]
  * [[mr:stone_blood_buff|StoneBlood Buff]]
  * [[mr:bleeding_buff|Bleeding Buff]]
  * [[mr:poison_buff|Poison Buff]]

{{tag> mr code reference buff system mechanics}}