feat: add Ascension.isUnlocked, Ascension.resolve

src/atmosphere.lua

@@ -0,0 +1,49 @@
+-- Floor-wide weather: a single condition drawn once at generation (like
+-- `dark`) that colors the whole level rather than one cell of it. Unlike
+-- terrain.lua's per-tile hazards (lava, chasm, ice), a floor's weather has no
+-- position of its own - every numeric hook below is a flat, floor-lifetime
+-- modifier the caller applies once per turn or once at generation, never
+-- something a player can step in or out of.
+
+local Atmosphere = {}
+
+Atmosphere.FOGGY = "foggy"
+Atmosphere.CONSECRATED = "consecrated"
+Atmosphere.INFESTED = "infested"
+
+-- Fixed order so a given rng draw always names the same condition.
+Atmosphere.order = { Atmosphere.FOGGY, Atmosphere.CONSECRATED, Atmosphere.INFESTED }
+
+-- A thick, clinging fog: everyone's sight radius shrinks, monsters and traps
+-- included, before the darkness/torch radius in Game:effectiveRadius is
+-- even considered.
+function Atmosphere.sightPenalty(weather)
+  if weather == Atmosphere.FOGGY then return 2 end
+  return 0
+end
+
+-- Consecrated ground mends the living each turn they linger on it, exactly
+-- like an artifact's fixed regen (see artifacts.ringRegen) but floor-wide
+-- and free of any equipment.
+function Atmosphere.regenBonus(weather)
+  if weather == Atmosphere.CONSECRATED then return 1 end
+  return 0
+end
+
+-- An infested floor's monsters hit harder from the moment they are placed -
+-- a flat, permanent bump baked into their stats at generation time (see
+-- builder.lua), the same way an elite affix or a boss's own catalog entry
+-- already sets a monster's power once and for all.
+function Atmosphere.monsterAttackBonus(weather)
+  if weather == Atmosphere.INFESTED then return 2 end
+  return 0
+end
+
+function Atmosphere.describe(weather)
+  if weather == Atmosphere.FOGGY then return "a thick fog blankets this floor" end
+  if weather == Atmosphere.CONSECRATED then return "this floor is consecrated ground" end
+  if weather == Atmosphere.INFESTED then return "this floor teems with infestation" end
+  return nil
+end
+
+return Atmosphere