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Mgv5/v7/flat/fractal: Move tunnel noise calculation into generateCaves

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Tunnel 3D noises are only calculated when solid terrain is present
in mapchunk, avoiding large amounts of unnecessary calculations
Change 'int' to 's16' in calculateNoise
Change 'i' to 'vi' for voxelmanip indexes for consistency
Keep 'u32 index3d' local to a smaller part of tunnel code
Mgv7: Don't call CaveV7 if no solid terrain in mapchunk
Give 'open' bool a more descriptive name
This commit is contained in:
paramat 2016-01-31 04:23:46 +00:00
parent 80c7612e76
commit 0a8af88147
4 changed files with 165 additions and 159 deletions
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56
src/mapgen_v5.cpp
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@ -322,18 +322,16 @@ void MapgenV5::makeChunk(BlockMakeData *data)
void MapgenV5::calculateNoise()
{
//TimeTaker t("calculateNoise", NULL, PRECISION_MICRO);
int x = node_min.X;
int y = node_min.Y - 1;
int z = node_min.Z;
s16 x = node_min.X;
s16 y = node_min.Y - 1;
s16 z = node_min.Z;
noise_factor->perlinMap2D(x, z);
noise_height->perlinMap2D(x, z);
noise_ground->perlinMap3D(x, y, z);
if (flags & MG_CAVES) {
noise_cave1->perlinMap3D(x, y, z);
noise_cave2->perlinMap3D(x, y, z);
}
// Cave noises are calculated in generateCaves()
// only if solid terrain is present in mapchunk
noise_filler_depth->perlinMap2D(x, z);
noise_heat->perlinMap2D(x, z);
@ -377,9 +375,9 @@ int MapgenV5::generateBaseTerrain()
for (s16 z=node_min.Z; z<=node_max.Z; z++) {
for (s16 y=node_min.Y - 1; y<=node_max.Y + 1; y++) {
u32 i = vm->m_area.index(node_min.X, y, z);
for (s16 x=node_min.X; x<=node_max.X; x++, i++, index++, index2d++) {
if (vm->m_data[i].getContent() != CONTENT_IGNORE)
u32 vi = vm->m_area.index(node_min.X, y, z);
for (s16 x=node_min.X; x<=node_max.X; x++, vi++, index++, index2d++) {
if (vm->m_data[vi].getContent() != CONTENT_IGNORE)
continue;
float f = 0.55 + noise_factor->result[index2d];
@ -391,11 +389,11 @@ int MapgenV5::generateBaseTerrain()
if (noise_ground->result[index] * f < y - h) {
if (y <= water_level)
vm->m_data[i] = MapNode(c_water_source);
vm->m_data[vi] = MapNode(c_water_source);
else
vm->m_data[i] = MapNode(CONTENT_AIR);
vm->m_data[vi] = MapNode(CONTENT_AIR);
} else {
vm->m_data[i] = MapNode(c_stone);
vm->m_data[vi] = MapNode(c_stone);
if (y > stone_surface_max_y)
stone_surface_max_y = y;
}
@ -508,22 +506,26 @@ MgStoneType MapgenV5::generateBiomes(float *heat_map, float *humidity_map)
void MapgenV5::generateCaves(int max_stone_y)
{
if (max_stone_y >= node_min.Y) {
u32 index = 0;
if (max_stone_y < node_min.Y)
return;
for (s16 z = node_min.Z; z <= node_max.Z; z++)
for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
u32 i = vm->m_area.index(node_min.X, y, z);
for (s16 x = node_min.X; x <= node_max.X; x++, i++, index++) {
float d1 = contour(noise_cave1->result[index]);
float d2 = contour(noise_cave2->result[index]);
if (d1 * d2 > 0.125f) {
content_t c = vm->m_data[i].getContent();
if (!ndef->get(c).is_ground_content || c == CONTENT_AIR)
continue;
noise_cave1->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
noise_cave2->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
vm->m_data[i] = MapNode(CONTENT_AIR);
}
u32 index = 0;
for (s16 z = node_min.Z; z <= node_max.Z; z++)
for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
u32 vi = vm->m_area.index(node_min.X, y, z);
for (s16 x = node_min.X; x <= node_max.X; x++, vi++, index++) {
float d1 = contour(noise_cave1->result[index]);
float d2 = contour(noise_cave2->result[index]);
if (d1 * d2 > 0.125f) {
content_t c = vm->m_data[vi].getContent();
if (!ndef->get(c).is_ground_content || c == CONTENT_AIR)
continue;
vm->m_data[vi] = MapNode(CONTENT_AIR);
}
}
}