a7bb9496ae
Vanilla-faithful overworld generator (final_density + multi-noise biomes), full connection lifecycle (status/login/configuration/play), chunk streaming, creative block editing, and the protocol/nbt/registry infrastructure.
16 lines
761 B
Go
16 lines
761 B
Go
package worldgen
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// SimpleTerrain builds a small density-function tree producing gentle 3D hills,
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// using the verified noise primitives. It is a placeholder shaped by hand until
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// the full vanilla overworld density tree is ported.
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//
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// density(x,y,z) = yBias(y) + amplitude * noise3D(scaled x,y,z)
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//
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// yBias goes from +1 at fromY to -1 at toY (clamped), so the surface sits where
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// the noise crosses the bias — roughly midway, perturbed by the noise.
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func SimpleTerrain(seed int64) DensityFunction {
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noise := NewNormalNoise(NewXoroshiro(seed), -4, []float64{1, 1, 1, 1})
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bias := YClampedGradient{FromY: 40, ToY: 104, FromV: 1.0, ToV: -1.0}
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perturb := Mul(Constant(0.7), NoiseDF{Noise: noise, XZScale: 0.2, YScale: 0.1})
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return Add(bias, perturb)
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}
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