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Code Pull Requests 1 Activity

Remove 3D noise from getSteps function (#6360)

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Vaughan Lapsley 2017-09-03 02:01:13 +10:00 committed by Loïc Blot
parent c0dac4d928
commit 2ac5a45faa
4 changed files with 10 additions and 10 deletions
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2
builtin/settingtypes.txt
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@ -1501,7 +1501,7 @@ mgcarpathian_np_ridge_mnt (Ridged mountain size noise) noise_params 0, 12, (743,
mgcarpathian_np_step_mnt (Step mountain size noise) noise_params 0, 8, (509, 509, 509), 2590, 6, 0.6, 2.0 mgcarpathian_np_step_mnt (Step mountain size noise) noise_params 0, 8, (509, 509, 509), 2590, 6, 0.6, 2.0
# 3D noise for mountain overhangs, cliffs, etc. Usually small variations. # 3D noise for mountain overhangs, cliffs, etc. Usually small variations.
mgcarpathian_np_mnt_var (Mountain variation noise) noise_params 0, 1, (499, 499, 499), 2490, 5, 0.6, 2.0 mgcarpathian_np_mnt_var (Mountain variation noise) noise_params 0, 1, (499, 499, 499), 2490, 5, 0.55, 2.0
# First of 2 3D noises that together define tunnels. # First of 2 3D noises that together define tunnels.
mgcarpathian_np_cave1 (Cave1 noise) noise_params 0, 12, (61, 61, 61), 52534, 3, 0.5, 2.0 mgcarpathian_np_cave1 (Cave1 noise) noise_params 0, 12, (61, 61, 61), 52534, 3, 0.5, 2.0

2
minetest.conf.example
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@ -1842,7 +1842,7 @@
# 3D noise for mountain overhangs, cliffs, etc. Usually small variations. # 3D noise for mountain overhangs, cliffs, etc. Usually small variations.
# type: noise_params # type: noise_params
# mgcarpathian_np_mnt_var = 0, 1, (499, 499, 499), 2490, 5, 0.6, 2.0 # mgcarpathian_np_mnt_var = 0, 1, (499, 499, 499), 2490, 5, 0.55, 2.0
# First of 2 3D noises that together define tunnels. # First of 2 3D noises that together define tunnels.
# type: noise_params # type: noise_params

14
src/mapgen_carpathian.cpp
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@ -120,7 +120,7 @@ MapgenCarpathianParams::MapgenCarpathianParams()
np_hills = NoiseParams(0, 3, v3f(257, 257, 257), 6604, 6, 0.5, 2.0); np_hills = NoiseParams(0, 3, v3f(257, 257, 257), 6604, 6, 0.5, 2.0);
np_ridge_mnt = NoiseParams(0, 12, v3f(743, 743, 743), 5520, 6, 0.7, 2.0); np_ridge_mnt = NoiseParams(0, 12, v3f(743, 743, 743), 5520, 6, 0.7, 2.0);
np_step_mnt = NoiseParams(0, 8, v3f(509, 509, 509), 2590, 6, 0.6, 2.0); np_step_mnt = NoiseParams(0, 8, v3f(509, 509, 509), 2590, 6, 0.6, 2.0);
np_mnt_var = NoiseParams(0, 1, v3f(499, 499, 499), 2490, 5, 0.6, 2.0); np_mnt_var = NoiseParams(0, 1, v3f(499, 499, 499), 2490, 5, 0.55, 2.0);
np_cave1 = NoiseParams(0, 12, v3f(61, 61, 61), 52534, 3, 0.5, 2.0); np_cave1 = NoiseParams(0, 12, v3f(61, 61, 61), 52534, 3, 0.5, 2.0);
np_cave2 = NoiseParams(0, 12, v3f(67, 67, 67), 10325, 3, 0.5, 2.0); np_cave2 = NoiseParams(0, 12, v3f(67, 67, 67), 10325, 3, 0.5, 2.0);
np_cavern = NoiseParams(0, 1, v3f(384, 128, 384), 723, 5, 0.63, 2.0); np_cavern = NoiseParams(0, 1, v3f(384, 128, 384), 723, 5, 0.63, 2.0);
@ -195,11 +195,11 @@ inline float MapgenCarpathian::getLerp(float noise1, float noise2, float mod)
} }
// Steps function // Steps function
float MapgenCarpathian::getSteps(float noise1, float noise2) float MapgenCarpathian::getSteps(float noise)
{ {
float w = fabs(noise2); float w = 0.5f;
float k = floor(noise1 / w); float k = floor(noise / w);
float f = (noise1 - k * w) / w; float f = (noise - k * w) / w;
float s = std::fmin(2.f * f, 1.f); float s = std::fmin(2.f * f, 1.f);
return (k + s) * w; return (k + s) * w;
} }
@ -343,7 +343,7 @@ float MapgenCarpathian::terrainLevelAtPoint(s16 x, s16 z)
float ridged_mountains = pow(rter, 3.f) * ridge_mnt; float ridged_mountains = pow(rter, 3.f) * ridge_mnt;
// Step (terraced) mountains // Step (terraced) mountains
float step_mnt = hilliness * getSteps(n_step_mnt, fabs(mnt_var)); float step_mnt = hilliness * getSteps(n_step_mnt);
float step_mountains = pow(ster, 3.f) * step_mnt; float step_mountains = pow(ster, 3.f) * step_mnt;
// Final terrain level // Final terrain level
@ -430,7 +430,7 @@ int MapgenCarpathian::generateTerrain()
// Step (terraced) mountains // Step (terraced) mountains
float ster = noise_step_terrain->result[index2d]; float ster = noise_step_terrain->result[index2d];
float n_step_mnt = noise_step_mnt->result[index2d]; float n_step_mnt = noise_step_mnt->result[index2d];
float step_mnt = hilliness * getSteps(n_step_mnt, fabs(mnt_var)); float step_mnt = hilliness * getSteps(n_step_mnt);
float step_mountains = pow(fabs(ster), 3.f) * step_mnt; float step_mountains = pow(fabs(ster), 3.f) * step_mnt;
// Final terrain level // Final terrain level

2
src/mapgen_carpathian.h
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@ -74,7 +74,7 @@ public:
virtual MapgenType getType() const { return MAPGEN_CARPATHIAN; } virtual MapgenType getType() const { return MAPGEN_CARPATHIAN; }
float getSteps(float noise1, float noise2); float getSteps(float noise);
inline float getLerp(float noise1, float noise2, float mod); inline float getLerp(float noise1, float noise2, float mod);
virtual void makeChunk(BlockMakeData *data); virtual void makeChunk(BlockMakeData *data);