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Mgv7 generateRidgeTerrain: Make river generation relative to water level 

Remove widthn and make nridge zero underwater
This commit is contained in:
paramat 2015-01-19 11:03:54 +00:00 committed by kwolekr
parent 70354ac20b
commit 1702c34b64
1 changed files with 4 additions and 9 deletions
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13
src/mapgen_v7.cpp
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@ -521,15 +521,10 @@ void MapgenV7::generateRidgeTerrain()
if (fabs(uwatern) > width)
continue;
float widthn = (noise_terrain_persist->result[j] - 0.6) / 0.1;
widthn = rangelim(widthn, -0.05, 0.5);
float height_mod = (float)(y + 17) / 2.5;
float width_mod = (width - fabs(uwatern));
float nridge = noise_ridge->result[index] * (float)y / 7.0;
if (y < water_level)
nridge = -fabs(nridge) * 3.0 * widthn * 0.3;
float altitude = y - water_level;
float height_mod = (altitude + 17) / 2.5;
float width_mod = width - fabs(uwatern);
float nridge = noise_ridge->result[index] * MYMAX(altitude, 0) / 7.0;
if (nridge + width_mod * height_mod < 0.6)
continue;