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terragen: rock band generator wip

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This commit is contained in:
minjaesong
2023-11-15 13:07:40 +09:00
parent 1affb24cae
commit 3707abcb3a
3 changed files with 32 additions and 19 deletions
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2
src/net/torvald/terrarum/modulebasegame/console/ExportMap2.kt
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@@ -42,7 +42,7 @@ internal object ExportMap2 : ConsoleCommand {
private fun Float.toDitherredByte(): Byte {
val byteVal = this.times(255f).roundToInt()
val error = this - byteVal
val errorInt = if (Math.random() < (1 - error.absoluteValue)) 0 else (1 * error.sign).toInt()
val errorInt = if (Math.random() < error.absoluteValue) 0 else error.sign.toInt()
return (byteVal + errorInt).coerceIn(0..255).toByte()
}

2
src/net/torvald/terrarum/modulebasegame/worldgenerator/Treegen.kt
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@@ -70,7 +70,7 @@ class Treegen(world: GameWorld, seed: Long, val terragenParams: TerragenParams,
private fun Double.toDitherredInt(rng: HQRNG): Int {
val ibase = this.floorToInt()
val thre = this - ibase
return if (rng.nextDouble() < (1.0 - thre)) ibase else ibase + 1
return if (rng.nextDouble() < 1.0 - thre) ibase else ibase + 1
}
private fun tryToPlant(xs: IntProgression, grassMap: Array<List<Int>>, rng: HQRNG) {

47
src/net/torvald/terrarum/tests/WorldgenNoiseSandbox.kt
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@@ -381,15 +381,17 @@ internal object TerragenTest : NoiseMaker {
private val terragenTiers = listOf(.0, .5, 1.0, 2.5).map { it * (NOISEBOX_HEIGHT / 2400.0).pow(0.75) } // pow 1.0 for 1-to-1 scaling; 0.75 is used to make deep-rock layers actually deep for huge world size
private fun Double.dither() = Math.random() < this
override fun draw(x: Int, y: Int, noiseValue: List<Double>, outTex: Pixmap) {
val terr = noiseValue[0].tiered(terragenTiers)
val cave = if (noiseValue[1] < 0.5) 0 else 1
val ore = (noiseValue.subList(2, noiseValue.size)).zip(oreCols).firstNotNullOfOrNull { (n, colour) -> if (n > 0.5) colour else null }
val marbleLayerThre = noiseValue[10]..noiseValue[11]
val isMarble = noiseValue[10] > 0.5
val wallBlock = if (noiseValue[0] in marbleLayerThre) Block.STONE_MARBLE else groundDepthBlock[terr]
val terrBlock = if (cave == 0) Block.AIR else if (noiseValue[0] in marbleLayerThre) Block.STONE_MARBLE else wallBlock
val wallBlock = if (isMarble) Block.STONE_MARBLE else groundDepthBlock[terr]
val terrBlock = if (cave == 0) Block.AIR else if (isMarble) Block.STONE_MARBLE else wallBlock
outTex.drawPixel(x, y,
@@ -714,25 +716,36 @@ internal object TerragenTest : NoiseMaker {
Joise(generateOreVeinModule(caveAttenuateBiasScaled, seed shake "ores@basegame:7", 0.013, 0.300, 0.476, 1.0)),
Joise(generateOreVeinModule(caveAttenuateBiasScaled, seed shake "ores@basegame:8", 0.017, 0.020, 0.511, 1.0)),
Joise(generate1Dline(seed shake 10, 2.6)),
Joise(generate1Dline(seed shake 10, 2.62)),
Joise(generateRockLayer(groundScaling, seed shake 10, 2.6, 2.62)),
)
}
private fun generate1Dline(seed: Long, avr: Double): Module {
return ModuleScaleOffset().also {
it.setSource(ModuleFractal().also {
it.setType(ModuleFractal.FractalType.RIDGEMULTI)
it.setAllSourceBasisTypes(ModuleBasisFunction.BasisType.SIMPLEX)
it.setAllSourceInterpolationTypes(ModuleBasisFunction.InterpolationType.QUINTIC)
it.setNumOctaves(1)
it.setFrequency(0.0)
it.seed = seed
})
it.setScale(1.0)
it.setOffset(avr - 1.0)
private fun generateRockLayer(ground: Module, seed: Long, rangeStart: Double, rangeEnd: Double): Module {
val thresholdLow = ModuleSelect().also {
it.setLowSource(0.0)
it.setHighSource(1.0)
it.setControlSource(ground)
it.setThreshold(rangeStart)
it.setFalloff(0.0)
}
val thresholdHigh = ModuleSelect().also {
it.setLowSource(1.0)
it.setHighSource(0.0)
it.setControlSource(ground)
it.setThreshold(rangeEnd)
it.setFalloff(0.0)
}
val band = ModuleCombiner().also {
it.setSource(0, thresholdLow)
it.setSource(1, thresholdHigh)
it.setType(ModuleCombiner.CombinerType.MULT)
}
return band
// TODO combine another noise generator to cut off the otherwise continuous line of stone layer
}