// This avoids duplicating the code in terrainLevelFromNoise, adding
// only the final step of terrain generation without a noise map.
float MapgenValleys::adjustedTerrainLevelFromNoise(TerrainNoise *tn)
{
float mount = terrainLevelFromNoise(tn);
s16 y_start = myround(mount);
for (s16 y = y_start; y <= y_start + 1000; y++) {
float fill = NoisePerlin3D(&noise_inter_valley_fill->np, tn->x, y, tn->z, seed);
if (fill * *tn->slope <= y - mount) {
mount = MYMAX(y - 1, mount);
break;
}
}
return mount;
}
// This avoids duplicating the code in terrainLevelFromNoise, adding
// only the final step of terrain generation without a noise map.
float MapgenValleys::adjustedTerrainLevelFromNoise(TerrainNoise *tn)
{
float mount = terrainLevelFromNoise(tn);
if (!fast_terrain) {
for (s16 y = round(mount); y <= round(mount) + 1000; y++) {
float fill = NoisePerlin3D(&noise_inter_valley_fill->np, tn->x, y, tn->z, seed);
if (fill * *tn->slope <= y - mount) {
mount = fmax(y - 1, mount);
break;
}
}
}
return mount;
}
// Populate the noise tables and do most of the
// calculation necessary to determine terrain height.
void MapgenValleys::calculateNoise()
{
//TimeTaker t("calculateNoise", NULL, PRECISION_MICRO);
int x = node_min.X;
int y = node_min.Y - 1;
int z = node_min.Z;
//TimeTaker tcn("actualNoise");
noise_filler_depth->perlinMap2D(x, z);
noise_heat_blend->perlinMap2D(x, z);
noise_heat->perlinMap2D(x, z);
noise_humidity_blend->perlinMap2D(x, z);
noise_humidity->perlinMap2D(x, z);
noise_inter_valley_slope->perlinMap2D(x, z);
noise_rivers->perlinMap2D(x, z);
noise_terrain_height->perlinMap2D(x, z);
noise_valley_depth->perlinMap2D(x, z);
noise_valley_profile->perlinMap2D(x, z);
noise_inter_valley_fill->perlinMap3D(x, y, z);
//mapgen_profiler->avg("noisemaps", tcn.stop() / 1000.f);
for (s32 index = 0; index < csize.X * csize.Z; index++) {
noise_heat->result[index] += noise_heat_blend->result[index];
noise_humidity->result[index] += noise_humidity_blend->result[index];
}
TerrainNoise tn;
u32 index = 0;
for (tn.z = node_min.Z; tn.z <= node_max.Z; tn.z++)
for (tn.x = node_min.X; tn.x <= node_max.X; tn.x++, index++) {
// The parameters that we actually need to generate terrain
// are passed by address (and the return value).
tn.terrain_height = noise_terrain_height->result[index];
// River noise is replaced with base terrain, which
// is basically the height of the water table.
tn.rivers = &noise_rivers->result[index];
// Valley depth noise is replaced with the valley
// number that represents the height of terrain
// over rivers and is used to determine about
// how close a river is for humidity calculation.
tn.valley = &noise_valley_depth->result[index];
tn.valley_profile = noise_valley_profile->result[index];
// Slope noise is replaced by the calculated slope
// which is used to get terrain height in the slow
// method, to create sharper mountains.
tn.slope = &noise_inter_valley_slope->result[index];
tn.inter_valley_fill = noise_inter_valley_fill->result[index];
// This is the actual terrain height.
float mount = terrainLevelFromNoise(&tn);
noise_terrain_height->result[index] = mount;
}
heatmap = noise_heat->result;
humidmap = noise_humidity->result;
}
// Populate the noise tables and do most of the
// calculation necessary to determine terrain height.
void MapgenValleys::calculateNoise()
{
//TimeTaker t("calculateNoise", NULL, PRECISION_MICRO);
int x = node_min.X;
int y = node_min.Y - 1;
int z = node_min.Z;
//TimeTaker tcn("actualNoise");
noise_filler_depth->perlinMap2D(x, z);
noise_heat_blend->perlinMap2D(x, z);
noise_heat->perlinMap2D(x, z);
noise_humidity_blend->perlinMap2D(x, z);
noise_humidity->perlinMap2D(x, z);
noise_inter_valley_slope->perlinMap2D(x, z);
noise_rivers->perlinMap2D(x, z);
noise_terrain_height->perlinMap2D(x, z);
noise_valley_depth->perlinMap2D(x, z);
noise_valley_profile->perlinMap2D(x, z);
if (fast_terrain) {
// Make this 2D for speed, if requested.
noise_inter_valley_fill->perlinMap2D(x, z);
if (cliff_terrain)
noise_cliffs->perlinMap2D(x, z);
if (rugged_terrain)
noise_corr->perlinMap2D(x, z);
} else {
noise_inter_valley_fill->perlinMap3D(x, y, z);
}
if (flags & MG_CAVES) {
noise_simple_caves_1->perlinMap3D(x, y, z);
noise_simple_caves_2->perlinMap3D(x, y, z);
}
//mapgen_profiler->avg("noisemaps", tcn.stop() / 1000.f);
for (s32 index = 0; index < csize.X * csize.Z; index++) {
noise_heat->result[index] += noise_heat_blend->result[index];
noise_heat->result[index] += temperature_adjust;
noise_humidity->result[index] += noise_humidity_blend->result[index];
}
TerrainNoise tn;
u32 index = 0;
for (tn.z = node_min.Z; tn.z <= node_max.Z; tn.z++)
for (tn.x = node_min.X; tn.x <= node_max.X; tn.x++, index++) {
// The parameters that we actually need to generate terrain
// are passed by address (and the return value).
tn.terrain_height = noise_terrain_height->result[index];
// River noise is replaced with base terrain, which
// is basically the height of the water table.
tn.rivers = &noise_rivers->result[index];
// Valley depth noise is replaced with the valley
// number that represents the height of terrain
// over rivers and is used to determine about
// how close a river is for humidity calculation.
tn.valley = &noise_valley_depth->result[index];
tn.valley_profile = noise_valley_profile->result[index];
// Slope noise is replaced by the calculated slope
// which is used to get terrain height in the slow
// method, to create sharper mountains.
tn.slope = &noise_inter_valley_slope->result[index];
tn.inter_valley_fill = noise_inter_valley_fill->result[index];
tn.cliffs = noise_cliffs->result[index];
tn.corr = noise_corr->result[index];
// This is the actual terrain height.
float mount = terrainLevelFromNoise(&tn);
noise_terrain_height->result[index] = mount;
if (fast_terrain) {
// Assign humidity adjusted by water proximity.
// I can't think of a reason why a mod would expect base humidity
// from noise or at any altitude other than ground level.
noise_humidity->result[index] = humidityByTerrain(
noise_humidity->result[index],
mount,
noise_rivers->result[index],
noise_valley_depth->result[index]);
// Assign heat adjusted by altitude. See humidity, above.
if (use_altitude_chill && mount > 0.f)
noise_heat->result[index] *= pow(0.5f, (mount - altitude_chill / 3.f) / altitude_chill);
}
}
heatmap = noise_heat->result;
humidmap = noise_humidity->result;
}
