192 lines
6.1 KiB
Python
192 lines
6.1 KiB
Python
from __future__ import annotations
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import random
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# Rune kinds (gems). Each rune is an item equipped into a plant's slots.
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RUNE_COLORS = ("sapphire", "ruby", "amethyst", "jade", "brown")
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RUNE_NAMES = {
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"sapphire": "Sapphire Rune",
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"ruby": "Ruby Rune",
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"amethyst": "Amethyst Rune",
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"jade": "Jade Rune",
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"brown": "Brown Rune",
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}
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# Tier classification: sapphire/ruby/amethyst/jade are Tier 1, brown is Tier 2.
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TIER1_COLORS = ("sapphire", "ruby", "amethyst", "jade")
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TIER2_COLORS = ("brown",)
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RUNE_TIERS = {c: 1 for c in TIER1_COLORS}
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RUNE_TIERS.update({c: 2 for c in TIER2_COLORS})
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# Sprite file (without extension) per rune color.
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RUNE_ICON_FILES = {
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"sapphire": "sapphire_rune",
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"ruby": "ruby_rune",
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"jade": "jade_rune",
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"amethyst": "amethyst_rune",
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"brown": "rune_brown",
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}
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# Old color names kept in earlier saves, mapped to the current gem names.
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RUNE_COLOR_ALIASES = {
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"blue": "sapphire",
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"red": "ruby",
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"white": "amethyst",
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"yellow": "jade",
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}
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def canonical_color(color: str) -> str:
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"""Map an old rune color name (blue/red/white/yellow) to the current gem."""
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return RUNE_COLOR_ALIASES.get(color, color)
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# Primitive effects: each rune rolls its own stat and stacks additively with
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# other equipped runes of the same effect. Brown is rarer and rolls lower, but
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# turns part of the damage this plant deals into a Wilt.
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RUNE_EFFECTS = {
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"ruby": "damage", # +damage dealt
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"sapphire": "shield", # +shielding
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"jade": "healing", # +healing received
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"amethyst": "damage_taken", # -damage taken
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"brown": "wilt", # damage dealt also Wils the target
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}
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PCT_MIN = 25
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PCT_MAX = 35
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BROWN_PCT_MIN = 5
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BROWN_PCT_MAX = 15
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# a plant can't stack more than this many runes of the same type
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MAX_RUNES_PER_TYPE = 2
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# coin costs to buy a random rune of a tier in the runes shop
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T1_RUNE_COST = 100
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T2_RUNE_COST = 150
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# brown drops less often than the other runes (relative weights)
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RUNE_WEIGHTS = {"sapphire": 1.0, "ruby": 1.0, "amethyst": 1.0, "jade": 1.0, "brown": 0.75}
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_EFFECT_TEXTS = {
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"ruby": "+{pct}% damage dealt",
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"sapphire": "+{pct}% shielding",
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"jade": "+{pct}% healing",
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"amethyst": "-{pct}% damage taken",
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"brown": "deals {pct}% of damage as Wilt",
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}
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RUNE_SUMMARIES = {
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"ruby": "Increases damage dealt",
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"sapphire": "Increases shielding",
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"jade": "Increases healing received",
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"amethyst": "Reduces damage taken",
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"brown": "Deals a portion of damage as Wilt",
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}
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MAX_RUNE_SLOTS = 3
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# Drop chances (test build)
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BATTLE_DROP_CHANCE = 0.15 # rare rune from a normal floor battle win
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PACK_DROP_CHANCE = 0.05 # rare additional rune from a seed pack
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def random_color() -> str:
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"""Roll a rune color; brown is weighted rarer than the others."""
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weights = [RUNE_WEIGHTS.get(c, 1.0) for c in RUNE_COLORS]
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return random.choices(RUNE_COLORS, weights=weights, k=1)[0]
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def roll_pct(color: str = None) -> int:
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"""Roll a rune's stat percentage. Brown rolls 5-15; the rest 25-35."""
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if color == "brown":
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return random.randint(BROWN_PCT_MIN, BROWN_PCT_MAX)
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return random.randint(PCT_MIN, PCT_MAX)
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def name(color: str) -> str:
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return RUNE_NAMES.get(color, "Rune")
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def tier(color: str) -> int:
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return RUNE_TIERS.get(color, 1)
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def roll_ratio(rune) -> float:
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"""How close a rune's roll is to its own maximum (0..1). Brown's 5-15 range
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is compared to its 15 cap, so a maxed brown ranks equally with a maxed
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yellow even though 15 < 35."""
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max_pct = BROWN_PCT_MAX if rune.get("color") == "brown" else PCT_MAX
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return rune.get("pct", 0) / max_pct
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def effect_text(color: str, pct: int) -> str:
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"""Human-readable effect for a rune of `color` with rolled stat `pct`."""
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return _EFFECT_TEXTS.get(color, "").format(pct=pct)
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_CARD_TEXTS = {
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"ruby": "+{pct}% dmg",
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"sapphire": "+{pct}% shield",
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"jade": "+{pct}% heal",
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"amethyst": "-{pct}% taken",
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"brown": "Wilt {pct}%",
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}
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def card_text(color: str, pct: int) -> str:
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"""Compact effect label that fits a small card (e.g. 'Wilt 12%')."""
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return _CARD_TEXTS.get(color, "").format(pct=pct)
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def effect_for(color: str) -> str:
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return RUNE_EFFECTS.get(color, "")
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_EFFECT_COLORS = {v: k for k, v in RUNE_EFFECTS.items()}
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def color_for_effect(effect: str) -> str:
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"""The rune colour whose effect is `effect` (for showing enemy runes)."""
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return _EFFECT_COLORS.get(effect, "")
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def summary(color: str) -> str:
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return RUNE_SUMMARIES.get(color, "")
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def roll_range(color: str) -> str:
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"""The stat range a rune of `color` rolls between (brown is lower)."""
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if color == "brown":
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return f"{BROWN_PCT_MIN}–{BROWN_PCT_MAX}%"
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return f"{PCT_MIN}–{PCT_MAX}%"
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def slots_for_max_stage(max_stage: int) -> int:
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"""Permanent rune slots unlocked by the highest evolution stage a plant has
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ever reached (stage 1 -> 1 slot, stage 2 -> 2, stage 3 -> 3)."""
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return min(MAX_RUNE_SLOTS, max(1, max_stage))
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def enemy_rune_count(stage: int) -> int:
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"""How many runes a tower enemy carries at `stage` (more as the tower ramps)."""
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if stage < 3:
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return 0
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return min(3, 1 + (stage - 3) // 5)
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def roll_enemy_runes(stage: int) -> list:
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"""Roll the runes a single tower enemy carries at `stage`. Returns a list of
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(effect_key, pct_fraction) pairs ready for `Unit.runes`. At most
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MAX_RUNES_PER_TYPE runes of the same type are rolled (same rule as players)."""
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count = enemy_rune_count(stage)
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runes_list = []
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counts = {}
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while len(runes_list) < count:
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color = random_color()
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if counts.get(color, 0) >= MAX_RUNES_PER_TYPE:
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continue # type already at the cap; roll another colour
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counts[color] = counts.get(color, 0) + 1
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runes_list.append((effect_for(color), roll_pct(color) / 100.0))
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return runes_list
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def per_rune_chance(source_chance: float) -> tuple:
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"""Effective drop chance (low, high) for a specific rune colour from a drop
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source, where brown's lower weight makes it the low end."""
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weights = [RUNE_WEIGHTS.get(c, 1.0) for c in RUNE_COLORS]
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total = sum(weights)
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return source_chance * min(weights) / total, source_chance * max(weights) / total |