From d569c91f489d16decf270847688c4e42c1014679 Mon Sep 17 00:00:00 2001 From: paramat Date: Wed, 15 Jul 2015 02:31:14 +0100 Subject: [PATCH] Mgv7: Use density noise + density gradient for mountain terrain Tune and optimise noise parameters --- src/mapgen_v7.cpp | 30 +++++++++++++++++------------- 1 file changed, 17 insertions(+), 13 deletions(-) diff --git a/src/mapgen_v7.cpp b/src/mapgen_v7.cpp index a46bf8f17..e499ebb81 100644 --- a/src/mapgen_v7.cpp +++ b/src/mapgen_v7.cpp @@ -146,17 +146,17 @@ MapgenV7Params::MapgenV7Params() { spflags = MGV7_MOUNTAINS | MGV7_RIDGES; - np_terrain_base = NoiseParams(4, 70, v3f(600, 600, 600), 82341, 5, 0.6, 2.0); - np_terrain_alt = NoiseParams(4, 25, v3f(600, 600, 600), 5934, 5, 0.6, 2.0); - np_terrain_persist = NoiseParams(0.6, 0.12, v3f(2000, 2000, 2000), 539, 3, 0.5, 2.0); - np_height_select = NoiseParams(-12, 24, v3f(500, 500, 500), 4213, 6, 0.69, 2.0); - np_filler_depth = NoiseParams(0, 1.2, v3f(150, 150, 150), 261, 4, 0.7, 2.0); - np_mount_height = NoiseParams(184, 72, v3f(1000, 1000, 1000), 72449, 3, 0.5, 2.0); - np_ridge_uwater = NoiseParams(0, 1, v3f(1000, 1000, 1000), 85039, 5, 0.6, 2.0); - np_mountain = NoiseParams(-0.6, 1, v3f(250, 350, 250), 5333, 5, 0.68, 2.0); - np_ridge = NoiseParams(0, 1, v3f(100, 100, 100), 6467, 4, 0.75, 2.0); - np_cave1 = NoiseParams(0, 12, v3f(100, 100, 100), 52534, 4, 0.5, 2.0); - np_cave2 = NoiseParams(0, 12, v3f(100, 100, 100), 10325, 4, 0.5, 2.0); + np_terrain_base = NoiseParams(4, 70, v3f(600, 600, 600), 82341, 5, 0.6, 2.0); + np_terrain_alt = NoiseParams(4, 25, v3f(600, 600, 600), 5934, 5, 0.6, 2.0); + np_terrain_persist = NoiseParams(0.6, 0.1, v3f(2000, 2000, 2000), 539, 3, 0.6, 2.0); + np_height_select = NoiseParams(-12, 24, v3f(500, 500, 500), 4213, 6, 0.7, 2.0); + np_filler_depth = NoiseParams(0, 1.2, v3f(150, 150, 150), 261, 3, 0.7, 2.0); + np_mount_height = NoiseParams(256, 112, v3f(1000, 1000, 1000), 72449, 3, 0.6, 2.0); + np_ridge_uwater = NoiseParams(0, 1, v3f(1000, 1000, 1000), 85039, 5, 0.6, 2.0); + np_mountain = NoiseParams(-0.6, 1, v3f(250, 350, 250), 5333, 5, 0.63, 2.0); + np_ridge = NoiseParams(0, 1, v3f(100, 100, 100), 6467, 4, 0.75, 2.0); + np_cave1 = NoiseParams(0, 12, v3f(100, 100, 100), 52534, 4, 0.5, 2.0); + np_cave2 = NoiseParams(0, 12, v3f(100, 100, 100), 10325, 4, 0.5, 2.0); } @@ -429,16 +429,20 @@ float MapgenV7::baseTerrainLevelFromMap(int index) bool MapgenV7::getMountainTerrainAtPoint(s16 x, s16 y, s16 z) { float mnt_h_n = NoisePerlin2D(&noise_mount_height->np, x, z, seed); + float density_gradient = -((float)y / mnt_h_n); float mnt_n = NoisePerlin3D(&noise_mountain->np, x, y, z, seed); - return mnt_n * mnt_h_n >= (float)y; + + return mnt_n + density_gradient >= 0.0; } bool MapgenV7::getMountainTerrainFromMap(int idx_xyz, int idx_xz, s16 y) { float mounthn = noise_mount_height->result[idx_xz]; + float density_gradient = -((float)y / mounthn); float mountn = noise_mountain->result[idx_xyz]; - return mountn * mounthn >= (float)y; + + return mountn + density_gradient >= 0.0; } -- 2.25.1