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-rw-r--r--src/mapgen_v7.cpp144
1 files changed, 68 insertions, 76 deletions
diff --git a/src/mapgen_v7.cpp b/src/mapgen_v7.cpp
index 069c34119..162bf068f 100644
--- a/src/mapgen_v7.cpp
+++ b/src/mapgen_v7.cpp
@@ -59,6 +59,8 @@ MapgenV7::MapgenV7(int mapgenid, MapgenParams *params, EmergeManager *emerge)
//// amount of elements to skip for the next index
//// for noise/height/biome maps (not vmanip)
this->ystride = csize.X;
+ // 1-up 1-down overgeneration
+ this->zstride_1u1d = csize.X * (csize.Y + 2);
// 1-down overgeneration
this->zstride_1d = csize.X * (csize.Y + 1);
@@ -263,10 +265,13 @@ void MapgenV7::makeChunk(BlockMakeData *data)
// Make some noise
calculateNoise();
- // Generate base terrain, mountains, and ridges with initial heightmaps
+ // Generate terrain and ridges with initial heightmaps
s16 stone_surface_max_y = generateTerrain();
- // Create heightmap
+ if (spflags & MGV7_RIDGES)
+ generateRidgeTerrain();
+
+ // Update heightmap to include mountain terrain
updateHeightmap(node_min, node_max);
// Create biomemap at heightmap surface
@@ -361,6 +366,11 @@ void MapgenV7::calculateNoise()
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);
@@ -369,9 +379,6 @@ void MapgenV7::calculateNoise()
// Cave noises are calculated in generateCaves()
// only if solid terrain is present in mapchunk
- // Mountain noises are calculated in generateMountainTerrain()
- // only if solid terrain surface dips into mapchunk
-
noise_filler_depth->perlinMap2D(x, z);
noise_heat->perlinMap2D(x, z);
noise_humidity->perlinMap2D(x, z);
@@ -400,7 +407,7 @@ Biome *MapgenV7::getBiomeAtPoint(v3s16 p)
return bmgr->getBiome(heat, humidity, groundlevel);
}
-//needs to be updated
+
float MapgenV7::baseTerrainLevelAtPoint(s16 x, s16 z)
{
float hselect = NoisePerlin2D(&noise_height_select->np, x, z, seed);
@@ -456,99 +463,54 @@ bool MapgenV7::getMountainTerrainFromMap(int idx_xyz, int idx_xz, s16 y)
int MapgenV7::generateTerrain()
{
- s16 stone_surface_min_y;
- s16 stone_surface_max_y;
-
- generateBaseTerrain(&stone_surface_min_y, &stone_surface_max_y);
-
- if ((spflags & MGV7_MOUNTAINS) && stone_surface_min_y < node_max.Y)
- stone_surface_max_y = generateMountainTerrain(stone_surface_max_y);
-
- if (spflags & MGV7_RIDGES)
- generateRidgeTerrain();
-
- return stone_surface_max_y;
-}
-
-
-void MapgenV7::generateBaseTerrain(s16 *stone_surface_min_y, s16 *stone_surface_max_y)
-{
MapNode n_air(CONTENT_AIR);
MapNode n_stone(c_stone);
MapNode n_water(c_water_source);
v3s16 em = vm->m_area.getExtent();
- s16 surface_min_y = MAX_MAP_GENERATION_LIMIT;
- s16 surface_max_y = -MAX_MAP_GENERATION_LIMIT;
- u32 index = 0;
+ 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++, index++) {
- float surface_height = baseTerrainLevelFromMap(index);
- s16 surface_y = (s16)surface_height;
-
- heightmap[index] = surface_y;
- ridge_heightmap[index] = surface_y;
-
- if (surface_y < surface_min_y)
- surface_min_y = surface_y;
+ for (s16 x = node_min.X; x <= node_max.X; x++, index2d++) {
+ s16 surface_y = baseTerrainLevelFromMap(index2d);
+ heightmap[index2d] = surface_y; // Create base terrain heightmap
+ ridge_heightmap[index2d] = surface_y;
- if (surface_y > surface_max_y)
- surface_max_y = surface_y;
+ if (surface_y > stone_surface_max_y)
+ stone_surface_max_y = surface_y;
u32 vi = vm->m_area.index(x, node_min.Y - 1, z);
+ u32 index3d = (z - node_min.Z) * zstride_1u1d + (x - node_min.X);
+
for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
if (vm->m_data[vi].getContent() == CONTENT_IGNORE) {
- if (y <= surface_y)
- vm->m_data[vi] = n_stone;
- else if (y <= water_level)
+ if (y <= surface_y) {
+ vm->m_data[vi] = n_stone; // Base terrain
+ } else if (mountain_flag &&
+ getMountainTerrainFromMap(index3d, index2d, y)) {
+ vm->m_data[vi] = n_stone; // Mountain terrain
+ if (y > stone_surface_max_y)
+ stone_surface_max_y = y;
+ } else if (y <= water_level) {
vm->m_data[vi] = n_water;
- else
+ } else {
vm->m_data[vi] = n_air;
+ }
}
vm->m_area.add_y(em, vi, 1);
+ index3d += ystride;
}
}
- *stone_surface_min_y = surface_min_y;
- *stone_surface_max_y = surface_max_y;
-}
-
-
-int MapgenV7::generateMountainTerrain(s16 ymax)
-{
- noise_mountain->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
- noise_mount_height->perlinMap2D(node_min.X, node_min.Z);
-
- MapNode n_stone(c_stone);
- u32 j = 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++) {
- int index = (z - node_min.Z) * csize.X + (x - node_min.X);
- content_t c = vm->m_data[vi].getContent();
-
- if (getMountainTerrainFromMap(j, index, y)
- && (c == CONTENT_AIR || c == c_water_source)) {
- vm->m_data[vi] = n_stone;
- if (y > ymax)
- ymax = y;
- }
-
- vi++;
- j++;
- }
- }
-
- return ymax;
+ return stone_surface_max_y;
}
void MapgenV7::generateRidgeTerrain()
{
- if (node_max.Y < water_level)
+ if (node_max.Y < water_level - 16)
return;
MapNode n_water(c_water_source);
@@ -562,7 +524,7 @@ void MapgenV7::generateRidgeTerrain()
for (s16 x = node_min.X; x <= node_max.X; x++, index++, vi++) {
int j = (z - node_min.Z) * csize.X + (x - node_min.X);
- if (heightmap[j] < water_level - 16)
+ if (heightmap[j] < water_level - 16) // Use base terrain heightmap
continue;
float uwatern = noise_ridge_uwater->result[j] * 2;
@@ -806,6 +768,36 @@ void MapgenV7::generateCaves(s16 max_stone_y)
#if 0
+int MapgenV7::generateMountainTerrain(s16 ymax)
+{
+ MapNode n_stone(c_stone);
+ u32 j = 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++) {
+ int index = (z - node_min.Z) * csize.X + (x - node_min.X);
+ content_t c = vm->m_data[vi].getContent();
+
+ if (getMountainTerrainFromMap(j, index, y)
+ && (c == CONTENT_AIR || c == c_water_source)) {
+ vm->m_data[vi] = n_stone;
+ if (y > ymax)
+ ymax = y;
+ }
+
+ vi++;
+ j++;
+ }
+ }
+
+ return ymax;
+}
+#endif
+
+
+#if 0
void MapgenV7::carveRivers() {
MapNode n_air(CONTENT_AIR), n_water_source(c_water_source);
MapNode n_stone(c_stone);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 06:25:12 +0000