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Mapgen: Remove calculateNoise from most mapgens

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This commit moves noise calculation to the functions where the noise is
actually required, increasing the separation of concerns and level of
interdependency for each mapgen method.  Valleys Mapgen is left unmodified.
This commit is contained in:
kwolekr 2016-05-20 03:37:31 -04:00
parent c5968049bb
commit 0df5c01a8c
10 changed files with 31 additions and 111 deletions
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54
src/mapgen_v7.cpp
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@ -252,9 +252,6 @@ void MapgenV7::makeChunk(BlockMakeData *data)
blockseed = getBlockSeed2(full_node_min, seed);
// Make some noise
calculateNoise();
// Generate terrain and ridges with initial heightmaps
s16 stone_surface_max_y = generateTerrain();
@ -340,37 +337,6 @@ void MapgenV7::makeChunk(BlockMakeData *data)
}
void MapgenV7::calculateNoise()
{
//TimeTaker t("calculateNoise", NULL, PRECISION_MICRO);
s16 x = node_min.X;
s16 y = node_min.Y - 1;
s16 z = node_min.Z;
noise_terrain_persist->perlinMap2D(x, z);
float *persistmap = noise_terrain_persist->result;
noise_terrain_base->perlinMap2D(x, z, persistmap);
noise_terrain_alt->perlinMap2D(x, z, persistmap);
noise_height_select->perlinMap2D(x, z);
if (spflags & MGV7_MOUNTAINS) {
noise_mountain->perlinMap3D(x, y, z);
noise_mount_height->perlinMap2D(x, z);
}
if ((spflags & MGV7_RIDGES) && node_max.Y >= water_level) {
noise_ridge->perlinMap3D(x, y, z);
noise_ridge_uwater->perlinMap2D(x, z);
}
// Cave noises are calculated in generateCaves()
// only if solid terrain is present in mapchunk
//printf("calculateNoise: %dus\n", t.stop());
}
float MapgenV7::baseTerrainLevelAtPoint(s16 x, s16 z)
{
float hselect = NoisePerlin2D(&noise_height_select->np, x, z, seed);
@ -430,10 +396,23 @@ int MapgenV7::generateTerrain()
MapNode n_stone(c_stone);
MapNode n_water(c_water_source);
//// Calculate noise for terrain generation
noise_terrain_persist->perlinMap2D(node_min.X, node_min.Z);
float *persistmap = noise_terrain_persist->result;
noise_terrain_base->perlinMap2D(node_min.X, node_min.Z, persistmap);
noise_terrain_alt->perlinMap2D(node_min.X, node_min.Z, persistmap);
noise_height_select->perlinMap2D(node_min.X, node_min.Z);
if (spflags & MGV7_MOUNTAINS) {
noise_mountain->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
noise_mount_height->perlinMap2D(node_min.X, node_min.Z);
}
//// Place nodes
v3s16 em = vm->m_area.getExtent();
s16 stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT;
u32 index2d = 0;
bool mountain_flag = spflags & MGV7_MOUNTAINS;
for (s16 z = node_min.Z; z <= node_max.Z; z++)
for (s16 x = node_min.X; x <= node_max.X; x++, index2d++) {
@ -450,7 +429,7 @@ int MapgenV7::generateTerrain()
if (vm->m_data[vi].getContent() == CONTENT_IGNORE) {
if (y <= surface_y) {
vm->m_data[vi] = n_stone; // Base terrain
} else if (mountain_flag &&
} else if ((spflags & MGV7_MOUNTAINS) &&
getMountainTerrainFromMap(index3d, index2d, y)) {
vm->m_data[vi] = n_stone; // Mountain terrain
if (y > stone_surface_max_y)
@ -475,6 +454,9 @@ void MapgenV7::generateRidgeTerrain()
if (node_max.Y < water_level - 16)
return;
noise_ridge->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
noise_ridge_uwater->perlinMap2D(node_min.X, node_min.Z);
MapNode n_water(c_water_source);
MapNode n_air(CONTENT_AIR);
u32 index = 0;