@Override
public void process(GeneratingRegion region) {
// will give funny results for regions that are not exactly chunk sized, but it is better than
// sinking in the water on spawn
Vector3i centerChunkPos = new Vector3i(ChunkConstants.CHUNK_REGION.center());
if (region.getRegion().encompasses(centerChunkPos)) {
SurfaceHeightFacet facet = region.getRegionFacet(SurfaceHeightFacet.class);
SeaLevelFacet seaLevelFacet = region.getRegionFacet(SeaLevelFacet.class);
float seaLevel = seaLevelFacet.getSeaLevel();
float targetHeight = seaLevel + 1; // one block above the seaLevel
// update the surface height so that it spikes up to sea level
Vector2i middlePos = new Vector2i(centerChunkPos.x, centerChunkPos.z);
for (BaseVector2i pos : facet.getWorldRegion().contents()) {
float originalValue = facet.getWorld(pos);
if (seaLevel > originalValue) {
// the surface is below sea level
float scaleTowardsSeaLevel =
(float) pos.gridDistance(middlePos) / (float) (ChunkConstants.SIZE_X / 2);
if (scaleTowardsSeaLevel < 1f) {
facet.setWorld(
pos, TeraMath.lerp(originalValue, targetHeight, 1f - scaleTowardsSeaLevel));
}
}
}
}
}
private Optional<Road> tryDirect(
BaseVector2i posA, BaseVector2i posB, float width, BuildableTerrainFacet terrainFacet) {
double length = posA.distance(posB);
int segCount =
TeraMath.ceilToInt(length / segLength); // ceil avoids division by zero for short distances
List<Vector2i> segPoints = new ArrayList<>();
segPoints.add(new Vector2i(posA));
for (int i = 1; i < segCount; i++) {
Vector2i pos = BaseVector2i.lerp(posA, posB, (float) i / segCount, RoundingMode.HALF_UP);
// first and last point receive only half the noise distortion to smoothen the end points
float applyFactor = (i == 1 || i == segCount - 1) ? 0.5f : 1f;
pos.x += noiseX.noise(pos.x * smooth, 0, pos.y * smooth) * noiseAmp * applyFactor;
pos.y += noiseY.noise(pos.x * smooth, 0, pos.y * smooth) * noiseAmp * applyFactor;
if (!terrainFacet.isPassable(pos)) {
return Optional.empty();
}
segPoints.add(pos);
}
segPoints.add(new Vector2i(posB));
return Optional.of(new Road(segPoints, width));
}