Daniar Mannanov
798a3ec7b4
generateBaseTerrain now factors the noise+surface stage out of chunk generation so structure placement can read pre-carve heights exactly like vanilla's STRUCTURE_STARTS stage. RuinedPortalGenerationPoint replays the ruined_portals set: the weighted pick across all seven variants on its own stream, each attempt's setup/template/rotation/ mirror draws on a fresh GenerationContext stream (makeRandom reseeds per attempt, confirmed from bytecode), findSuitableY with corner-column settle scan against those heights, and the post-draw 3D-biome filter at quart-snapped coordinates. Known gap, documented in STRUCTURE_NOTES.md: no variant is accepted in the window around the fixture's portal yet while vanilla placed one; the biome/surface inputs need a vanilla-side probe to bisect. Not wired into the production replay until that closes.
103 lines
4.5 KiB
Go
103 lines
4.5 KiB
Go
package worldgen
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// biome_temperature.go holds each overworld biome's base temperature, extracted
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// verbatim from the "temperature" field of data/minecraft/worldgen/biome/*.json
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// inside the 26.1.2 server jar. It replaces a hand-written list of biome names
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// that guessed at which ones were cold.
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//
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// The surface rule tree consults it through exactly one condition
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// (minecraft:temperature), which decides whether a hole in a frozen ocean floor
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// freezes over.
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// biomeTemperature maps a biome to Biome.getBaseTemperature().
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var biomeTemperature = map[string]float32{
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"minecraft:badlands": 2.0,
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"minecraft:bamboo_jungle": 0.95,
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"minecraft:basalt_deltas": 2.0,
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"minecraft:beach": 0.8,
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"minecraft:birch_forest": 0.6,
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"minecraft:cherry_grove": 0.5,
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"minecraft:cold_ocean": 0.5,
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"minecraft:crimson_forest": 2.0,
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"minecraft:dark_forest": 0.7,
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"minecraft:deep_cold_ocean": 0.5,
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"minecraft:deep_dark": 0.8,
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"minecraft:deep_frozen_ocean": 0.5, // temperature_modifier: frozen
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"minecraft:deep_lukewarm_ocean": 0.5,
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"minecraft:deep_ocean": 0.5,
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"minecraft:desert": 2.0,
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"minecraft:dripstone_caves": 0.8,
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"minecraft:end_barrens": 0.5,
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"minecraft:end_highlands": 0.5,
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"minecraft:end_midlands": 0.5,
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"minecraft:eroded_badlands": 2.0,
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"minecraft:flower_forest": 0.7,
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"minecraft:forest": 0.7,
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"minecraft:frozen_ocean": 0.0, // temperature_modifier: frozen
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"minecraft:frozen_peaks": -0.7,
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"minecraft:frozen_river": 0.0,
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"minecraft:grove": -0.2,
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"minecraft:ice_spikes": 0.0,
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"minecraft:jagged_peaks": -0.7,
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"minecraft:jungle": 0.95,
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"minecraft:lukewarm_ocean": 0.5,
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"minecraft:lush_caves": 0.5,
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"minecraft:mangrove_swamp": 0.8,
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"minecraft:meadow": 0.5,
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"minecraft:mushroom_fields": 0.9,
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"minecraft:nether_wastes": 2.0,
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"minecraft:ocean": 0.5,
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"minecraft:old_growth_birch_forest": 0.6,
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"minecraft:old_growth_pine_taiga": 0.3,
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"minecraft:old_growth_spruce_taiga": 0.25,
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"minecraft:pale_garden": 0.7,
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"minecraft:plains": 0.8,
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"minecraft:river": 0.5,
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"minecraft:savanna": 2.0,
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"minecraft:savanna_plateau": 2.0,
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"minecraft:small_end_islands": 0.5,
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"minecraft:snowy_beach": 0.05,
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"minecraft:snowy_plains": 0.0,
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"minecraft:snowy_slopes": -0.3,
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"minecraft:snowy_taiga": -0.5,
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"minecraft:soul_sand_valley": 2.0,
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"minecraft:sparse_jungle": 0.95,
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"minecraft:stony_peaks": 1.0,
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"minecraft:stony_shore": 0.2,
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"minecraft:sunflower_plains": 0.8,
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"minecraft:swamp": 0.8,
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"minecraft:taiga": 0.25,
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"minecraft:the_end": 0.5,
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"minecraft:the_void": 0.5,
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"minecraft:warm_ocean": 0.5,
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"minecraft:warped_forest": 2.0,
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"minecraft:windswept_forest": 0.2,
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"minecraft:windswept_gravelly_hills": 0.2,
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"minecraft:windswept_hills": 0.2,
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"minecraft:windswept_savanna": 2.0,
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"minecraft:wooded_badlands": 2.0,
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}
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// coldEnoughToSnow is Biome.coldEnoughToSnow: below 0.15 the biome gets snow
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// and ice rather than rain.
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//
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// Two parts of vanilla's calculation are not reproduced, both because they need
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// PerlinSimplexNoise, which we do not have:
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//
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// - the height adjustment, which cools a column above sea level + 17 and so
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// puts snow on peaks in otherwise temperate biomes. No rule in the
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// overworld tree reaches this condition above that height.
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// - the "frozen" temperature modifier, which warms scattered patches of
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// frozen_ocean and deep_frozen_ocean. Its absence makes frozen-ocean ice
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// uniform where vanilla leaves open water in it.
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//
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// An unknown biome reads as warm, which is the safe direction: it leaves the
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// default block alone rather than icing something over.
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func coldEnoughToSnow(biome string) bool {
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temperature, ok := biomeTemperature[biome]
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return ok && temperature < 0.15
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}
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// ColdEnoughToSnow exposes the per-biome snow threshold to structure ports.
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func ColdEnoughToSnow(biome string) bool { return coldEnoughToSnow(biome) }
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