From a08a93bc9c64ee426132424770fc28bf15457db9 Mon Sep 17 00:00:00 2001 From: paramat Date: Sun, 25 Jun 2017 04:45:40 +0100 Subject: Mgv7: Clean up divide-by-zero fix --- src/mapgen_v7.cpp | 9 ++++++--- src/mapgen_v7.h | 2 -- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/src/mapgen_v7.cpp b/src/mapgen_v7.cpp index ae500d5f8..3ac099d32 100644 --- a/src/mapgen_v7.cpp +++ b/src/mapgen_v7.cpp @@ -57,13 +57,16 @@ MapgenV7::MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge) this->spflags = params->spflags; this->cave_width = params->cave_width; this->float_mount_density = params->float_mount_density; - float_mount_height_lim = MYMAX(params->float_mount_height, 1.0f); this->floatland_level = params->floatland_level; this->shadow_limit = params->shadow_limit; this->cavern_limit = params->cavern_limit; this->cavern_taper = params->cavern_taper; this->cavern_threshold = params->cavern_threshold; + // This is to avoid a divide-by-zero. + // Parameter will be saved to map_meta.txt in limited form. + params->float_mount_height = MYMAX(params->float_mount_height, 1.0f); + // 2D noise noise_terrain_base = new Noise(¶ms->np_terrain_base, seed, csize.X, csize.Z); noise_terrain_alt = new Noise(¶ms->np_terrain_alt, seed, csize.X, csize.Z); @@ -399,8 +402,8 @@ bool MapgenV7::getFloatlandMountainFromMap(int idx_xyz, int idx_xz, s16 y) { // Make rim 2 nodes thick to match floatland base terrain float density_gradient = (y >= floatland_level) ? - -pow((float)(y - floatland_level) / float_mount_height_lim, 0.75f) : - -pow((float)(floatland_level - 1 - y) / float_mount_height_lim, 0.75f); + -pow((float)(y - floatland_level) / float_mount_height, 0.75f) : + -pow((float)(floatland_level - 1 - y) / float_mount_height, 0.75f); float floatn = noise_mountain->result[idx_xyz] + float_mount_density; diff --git a/src/mapgen_v7.h b/src/mapgen_v7.h index 2b79cce51..a69170057 100644 --- a/src/mapgen_v7.h +++ b/src/mapgen_v7.h @@ -103,8 +103,6 @@ private: Noise *noise_float_base_height; Noise *noise_mountain; Noise *noise_ridge; - - float float_mount_height_lim; }; #endif -- cgit v1.2.3