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v1.4.4

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Aria 2025-03-21 22:23:30 +11:00
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source/game/terrain/StarRidgeBlocksSelector.cpp Normal file
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#include "StarRidgeBlocksSelector.hpp"
#include "StarRandom.hpp"
namespace Star {
char const* const RidgeBlocksSelector::Name = "ridgeblocks";
RidgeBlocksSelector::RidgeBlocksSelector(Json const& config, TerrainSelectorParameters const& parameters)
: TerrainSelector(Name, config, parameters) {
commonality = parameters.commonality;
amplitude = config.getFloat("amplitude");
frequency = config.getFloat("frequency");
bias = config.getFloat("bias");
noiseAmplitude = config.getFloat("noiseAmplitude");
noiseFrequency = config.getFloat("noiseFrequency");
RandomSource random(parameters.seed);
ridgePerlin1 = PerlinF(PerlinType::RidgedMulti, 2, frequency, amplitude, 0, 2.0f, 2.0f, random.randu64());
ridgePerlin2 = PerlinF(PerlinType::RidgedMulti, 2, frequency, amplitude, 0, 2.0f, 2.0f, random.randu64());
noisePerlin = PerlinF(1, noiseFrequency, noiseAmplitude, 0, 1.0f, 2.0f, random.randu64());
}
float RidgeBlocksSelector::get(int x, int y) const {
if (commonality <= 0.0f) {
return 0.0f;
} else {
x += noisePerlin.get(x, y);
y += noisePerlin.get(y, x);
return (ridgePerlin1.get(x, y) - ridgePerlin2.get(x, y)) * commonality + bias;
}
}
}