91 lines
2.4 KiB
GDScript
91 lines
2.4 KiB
GDScript
class_name FishQuality
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extends RefCounted
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enum Tier {
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BORING,
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AVERAGE,
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IMPRESSIVE,
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EXCEPTIONAL,
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SHINY,
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}
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const TIER_COUNT: int = 5
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const ALL_TIERS_MASK: int = (1 << TIER_COUNT) - 1
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# Starting distribution. Equipment and tackle can supply per-tier
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# multipliers later without changing catch serialization or tier identity.
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const BASE_ROLL_WEIGHTS: Array[float] = [40.0, 32.0, 18.0, 8.0, 2.0]
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const SALE_MULTIPLIERS: Array[float] = [1.0, 1.1, 1.25, 1.5, 2.0]
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const DISPLAY_NAMES: PackedStringArray = [
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"boring",
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"average",
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"impressive",
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"exceptional",
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"shiny",
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]
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static func is_valid(quality: int) -> bool:
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return quality >= 0 and quality < TIER_COUNT
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static func display_name(quality: int) -> String:
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return DISPLAY_NAMES[quality] if is_valid(quality) else "unknown"
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static func bit_for(quality: int) -> int:
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return 1 << quality if is_valid(quality) else 0
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static func sale_multiplier(quality: int) -> float:
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return SALE_MULTIPLIERS[quality] if is_valid(quality) else 1.0
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static func apply_sale_value(base_value: int, quality: int) -> int:
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if base_value <= 0 or not is_valid(quality):
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return maxi(base_value, 0)
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if quality == Tier.BORING:
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return base_value
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return maxi(
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base_value + quality,
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ceili(float(base_value) * sale_multiplier(quality)),
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)
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static func roll(
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rng: RandomNumberGenerator,
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weight_multipliers: Array[float] = [],
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) -> int:
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if rng == null:
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return Tier.BORING
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var weights: Array[float] = []
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var total_weight: float = 0.0
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for quality: int in TIER_COUNT:
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var multiplier: float = 1.0
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if quality < weight_multipliers.size():
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multiplier = maxf(weight_multipliers[quality], 0.0)
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var weight: float = BASE_ROLL_WEIGHTS[quality] * multiplier
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weights.append(weight)
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total_weight += weight
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if total_weight <= 0.0:
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return Tier.BORING
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var rolled_weight: float = rng.randf() * total_weight
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var accumulated_weight: float = 0.0
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for quality: int in TIER_COUNT:
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accumulated_weight += weights[quality]
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if rolled_weight <= accumulated_weight:
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return quality
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return Tier.SHINY
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static func qualified_name(fish_name: String, quality: int) -> String:
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return "%s %s" % [display_name(quality), fish_name]
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static func qualified_name_with_article(
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fish_name: String,
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quality: int,
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) -> String:
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var quality_name: String = display_name(quality)
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var article: String = "an" if quality_name[0] in ["a", "e", "i", "o", "u"] else "a"
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return "%s %s %s" % [article, quality_name, fish_name]
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