36 lines
1.0 KiB
GDScript
36 lines
1.0 KiB
GDScript
class_name Luck
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extends RefCounted
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## Numeric Luck (charter §7). Lives in GameState; only descriptor() reaches the
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## log. Deterministic given a seeded RNG (charter §10). Die/range/bands are
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## TUNABLE constants — not final values.
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const MIN := 1
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const MAX := 20
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const DRIFT := 3
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const BANDS := [
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{"max": 4, "text": "Fortune spits on you"},
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{"max": 8, "text": "The world is not on your side"},
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{"max": 12, "text": "The dice are indifferent"},
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{"max": 16, "text": "Luck rides with you"},
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{"max": 20, "text": "The dice are kind today"},
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]
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static func roll_base(rng: RandomNumberGenerator, modifier: int) -> int:
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var total := 0
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for i in 5:
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total += rng.randi_range(1, 20)
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return clampi(roundi(total / 5.0) + modifier, MIN, MAX)
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static func drift(current: int, base: int, delta: int) -> int:
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return clampi(clampi(current + delta, base - DRIFT, base + DRIFT), MIN, MAX)
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static func descriptor(luck: int) -> String:
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for band in BANDS:
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if luck <= band["max"]:
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return band["text"]
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return BANDS[-1]["text"]
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